The River and the Reservoir: A Financial Planner’s Guide to Navigating the Flow of a Couple’s Wealth

Introduction: The Myth of the Single Stream

In my fifteen years as a financial planner specializing in family wealth, I have become an unwilling connoisseur of marital discord.

It rarely presents as the loud, dramatic blow-up you might see in a movie.

Instead, it’s a low-frequency hum of resentment, a quiet tension that settles over the polished mahogany of my conference table.

I see it in the way a husband’s jaw tightens when his wife mentions a large withdrawal, or the subtle eye-roll from a wife when her husband talks excitedly about a volatile tech stock.

They are successful people, titans in their respective fields, who have built careers, raised children, and navigated the complexities of modern life.

Yet, the one thing that consistently brings them to a grinding, frustrating halt is the management of their shared wealth.

The conventional wisdom we’ve all been fed is seductive in its simplicity: combine your finances, create a joint account, and move forward as one unified financial entity.¹

It’s meant to be a symbol of trust and partnership, a single stream flowing toward a shared future.

But in my experience, for too many couples, this single stream becomes a raging, chaotic river of conflict.

The very tool meant to simplify their lives becomes the epicenter of their financial and emotional warfare.³

I think of the Millers, a couple who perfectly embodied this paradox.

Mark was a brilliant surgeon, accustomed to high-stakes, decisive action.

His approach to investing mirrored his professional life: aggressive, confident, and with a high tolerance for risk.

He saw market downturns as buying opportunities and was energized by the potential for outsized returns.⁵

Sarah, his wife, was a tenured professor of history, a meticulous researcher whose work rewarded patience, stability, and the careful preservation of what was known.

Her financial personality was a direct reflection of this; she valued security above all else, finding comfort in principal preservation and the slow, steady accumulation of wealth.⁵

Following the well-trodden advice, upon getting married they opened a Fidelity joint brokerage account and dutifully poured their savings into it.

It was meant to be their shared vessel for the future.

Instead, it became a source of constant friction.

Mark’s quick trades, his “high-velocity” financial decisions, felt like reckless gambling to Sarah.

Her desire to hold a significant cash position and invest in stable, low-yield bonds felt like suffocating stagnation to Mark.

Because every transaction was transparent and visible to both, every login became a potential argument.⁷

“Why did you sell that ETF? It was our core holding,” Sarah would ask, her voice laced with anxiety.

“We missed the peak! I moved the capital into something with real growth potential,” Mark would retort, frustrated by what he saw as her lack of vision.

Their financial conversations devolved from planning to accusation.

The shared account, rather than fostering unity, created a cycle of blame and criticism.³

The inevitable result was a quiet rebellion.

To regain a sense of control and safety, Sarah began siphoning money into a separate savings account she kept hidden from Mark—a classic act of financial infidelity born not of malice, but of a desperate need for financial security that their shared system could not provide.⁹

Their wealth wasn’t growing efficiently; it was churning, losing energy to the constant heat of their conflict.

The Millers’ story is not an anomaly.

It is the predictable outcome of a flawed model.

The problem isn’t the joint account itself, but the oversimplified advice that ignores the fundamental physics of a couple’s financial and emotional lives.

Standard practice treats two distinct individuals, each with their own history, risk tolerance, and deeply ingrained beliefs about money, as a single, uniform input.⁹

It’s like forcing two rivers, one a cold, fast-moving torrent and the other a warm, slow-moving current, into a single, narrow channel and expecting a placid stream.

The result is not harmony; it is turbulence.

And for years, I watched this turbulence erode not only my clients’ portfolios, but their partnerships as well.

I knew there had to be a better Way.

Section I: The Planner’s Epiphany: From Financial Planning to Financial Flow Dynamics

The breakthrough didn’t come during a market analysis or a tax seminar.

It came on a quiet Saturday afternoon, while watching the steady, glass-like surface of a slow-moving river suddenly break into a chaotic churn as it navigated a series of sharp bends and rocks.

In that moment, I realized the language of finance—assets, liabilities, returns, budgets—was utterly inadequate to describe the problem I was seeing in my office every week.

The issue wasn’t a static balance sheet; it was a dynamic system in motion.

It was about flow.

I began to see the movement of money, the pursuit of goals, and the currents of emotion within a couple’s life as a system governed by principles remarkably similar to fluid mechanics.¹⁵

This shift in perspective was more than just a new metaphor; it was a new diagnostic and prescriptive framework.

I called it Financial Flow Dynamics.

The Core Analogy: Financial Flow Dynamics

In fluid mechanics, flow is generally classified into two states: laminar and turbulent.¹⁷

This distinction became the cornerstone of my new approach.

Financial Laminar Flow: Imagine a fluid moving in smooth, orderly, parallel layers, like a deck of cards sliding across a table.¹⁸

There is little to no mixing between the layers, minimal friction, and a predictable, efficient path forward.¹⁹

This is the ideal state for a couple’s finances.

It represents a system where capital moves predictably toward shared goals.

Communication is clear, decisions are aligned, and there is very little energy wasted on conflict or misunderstanding.

The flow is

smooth, constant, and orderly.¹⁸

This state isn’t about being restrictive; it’s about being incredibly efficient.

The energy of the system is directed entirely toward its objective, whether that’s funding retirement, buying a home, or building a legacy.

Financial Turbulent Flow: This is the state of the Millers.

Turbulent flow is chaotic, irregular, and characterized by swirling eddies and vortices.¹⁷

These are the financial equivalents of arguments over spending, impulsive solo investment decisions, hidden debts, and stalled progress.

A turbulent system is defined by high friction and massive energy loss.²¹

The couple may be earning significant income, but their net worth stagnates because so much energy is dissipated by the internal chaos of their financial relationship.

They are working hard, but the chaotic motion means much of that effort is cancelled out, leading nowhere.

The Key Variables of Financial Flow

To move a couple from a turbulent state to a laminar one, we first have to understand the variables that govern the system.

In my model, these are:

• The Conduit (Account Structure): This is the physical and legal structure through which money flows—the pipes, channels, and reservoirs of a couple’s financial life.²⁴ The shape, size, and even the internal
  roughness of the conduit—determined by account rules, legal registrations, and access levels—have a dramatic impact on the quality of the flow.²⁵ A poorly designed conduit can create friction and pressure points that induce turbulence.
• Financial Velocity (Transaction Speed & Frequency): This is a measure of how quickly and frequently money moves through the system. Just as a river’s flow becomes more turbulent as its velocity increases, a couple’s financial flow is more prone to chaos when characterized by high-velocity actions like frequent, impulsive trading or reactive spending.²¹
• Financial Viscosity (Risk Tolerance): In physics, viscosity is a fluid’s internal resistance to flow.²⁹ Honey is more viscous than water. In my model, this is a direct analogue for an individual’s risk tolerance. A partner with high
  financial viscosity is conservative and risk-averse; they prefer the slow, predictable, and steady movement of capital. A partner with low financial viscosity is aggressive and risk-tolerant; they are comfortable with faster, more volatile, and less predictable movement. The fundamental conflict that plagues so many couples arises when they attempt to force two “fluids” of dramatically different viscosities through the same narrow pipe at the same speed.¹⁴
• External Pressure & Obstacles (Life Events & Liabilities): No financial system exists in a vacuum. Life events such as a job loss, an inheritance, the birth of a child, or the burden of significant debt act as external forces on the system.¹³ These are the bends in the pipe, the sudden constrictions, or the rough patches that can disrupt an otherwise smooth, laminar flow and trigger a transition into turbulence.²⁷

This framework reframes the entire purpose of financial planning.

The goal is no longer simply to accumulate the largest possible pile of assets.

A high net worth statement can easily mask a deeply dysfunctional, turbulent system that is inefficient and emotionally draining.

Instead, the primary objective becomes one of engineering: to design a system of conduits and controls that promotes and maintains a state of laminar flow.

A couple with a smaller portfolio but a perfectly laminar flow is often in a far healthier position—and on a much more sustainable trajectory—than a wealthier couple whose finances are in constant, chaotic turmoil.

Financial health is not a static number; it is a dynamic property of a well-designed system.

Section II: Designing the Conduit: A Legal and Structural Analysis of Fidelity Joint Accounts

Before one can hope to manage the flow, one must first engineer the conduit.

For a couple’s shared investments, the legal registration of their Fidelity joint brokerage account is the conduit.

This is not a mere formality or a box to be checked on an application form; it is the foundational act of financial engineering.³⁵

The choice of registration predetermines the system’s rules of operation, its lines of control, its resilience to external shocks, and its behavior at critical life junctures like death or legal challenges.³⁷

Most couples default to the simplest option without understanding the profound implications, akin to an engineer laying a pipeline without considering the material it’s made from or the pressure it will need to withstand.

At Fidelity, couples have several distinct engineering choices for their primary investment conduit.

Each offers a different combination of flexibility, protection, and estate planning efficiency.

Joint Tenants with Rights of Survivorship (JTWROS)

This is the most common form of joint ownership and the default for many couples.³⁹

• Description: In a JTWROS account, both partners are considered to have equal, undivided ownership of 100% of the assets.³⁷ This structure grants each owner the authority to act independently—to buy, sell, or withdraw funds without the other’s explicit consent for each transaction.³⁸
• Fluid Analogy: A JTWROS account is a simple, straight, wide-bore pipe. It is designed for maximum, unimpeded flow. It offers no internal dividers or special reinforcements, prioritizing ease of use and transactional efficiency above all else.
• Key Implication (Survivorship): The “Rights of Survivorship” clause is its defining feature. Upon the death of one account owner, the assets in the account automatically and immediately transfer to the surviving owner.² This process occurs outside of the often lengthy and expensive probate process, ensuring the surviving partner has seamless access to the funds.⁴²

Tenants in Common (TIC)

This registration offers a more granular and controlled form of ownership, suitable for more complex family situations.

• Description: A TIC account allows for divisible ownership. Each partner owns a specific, predetermined percentage of the account’s assets—Fidelity assumes an equal 50/50 split unless notified otherwise.³⁷ While both owners can manage the account, their ownership stake is distinct.
• Fluid Analogy: A TIC account is a pipe with an internal divider. During the owners’ lifetimes, the capital flows together within the same conduit. However, the structure ensures that at a critical juncture (death), one portion of the flow can be cleanly diverted to a separate destination without disrupting the survivor’s portion.
• Key Implication (Survivorship): There is no automatic right of survivorship in a TIC account. When one owner dies, their specified share of the assets does not pass to the surviving owner. Instead, it becomes part of their estate and is distributed according to the instructions in their will.⁴³ This makes TIC an essential tool for blended families, where a partner may wish for their portion of the shared assets to go to children from a previous marriage rather than to their current spouse.

Tenancy by the Entirety (TBE)

This is a specialized and powerful form of ownership available exclusively to married couples in certain states.³⁷

• Description: TBE law treats the married couple not as two separate individuals, but as a single, indivisible legal entity.⁴⁵ Both spouses are considered to own 100% of the account together. Crucially, in most TBE jurisdictions, neither spouse can unilaterally sell or transfer assets without the other’s consent.²
• Fluid Analogy: A TBE account is a reinforced, insulated conduit. It is a heavily fortified pipe. Major changes to the flow require two keys (the consent of both spouses), and its walls are specifically designed to protect the contents from certain external impacts.
• Key Implication (Creditor Protection): This is the paramount advantage of TBE. It provides a robust shield against the individual creditors of one spouse.³⁹ If, for example, a surgeon like Mark Miller were sued for malpractice, a creditor with a judgment against him personally would typically be unable to seize assets held in a TBE account with his wife, Sarah.⁴⁶ This protection is a critical design feature for any couple where one or both partners are in high-liability professions or own a business. The protection dissolves upon death or divorce.³⁹

The choice between these structures is the first and most critical decision in designing a couple’s financial system.

A default to JTWROS prioritizes simplicity but may leave the couple vulnerable.

A thoughtful selection of TIC or TBE, where appropriate, builds resilience and control directly into the foundation of their financial life.

Table: Engineering Your Financial Conduit: A Comparison of Fidelity Joint Account Types

Account Type	Eligibility	Fluid Analogy	Control & Disposition	Survivorship Right	Key Feature / Best Use Case
Joint Tenants with Rights of Survivorship (JTWROS)	Married & Unmarried Individuals 39	Simple, Wide-Bore Pipe: Unrestricted flow, maximum efficiency.	Each owner has undivided interest and can act independently.38	Automatic: Assets pass directly to the surviving owner(s), avoiding probate.41	Simplicity and streamlined estate transfer for uncomplicated family structures.
Tenants in Common (TIC)	Married & Unmarried Individuals 39	Divided Channel: Allows for separate flow destinations upon death.	Owners hold a specific, divisible share (e.g., 50/50).38	Via Estate: Decedent’s share passes to their estate as directed by their will.37	Complex estate planning, especially for blended families or specific legacy goals.
Tenancy by the Entirety (TBE)	Married Couples Only (in specific states) 39	Reinforced, Insulated Conduit: Fortified against external shocks.	Couple is treated as a single legal entity; major actions often require joint consent.2	Automatic: Similar to JTWROS, assets pass directly to the surviving spouse.42	Powerful asset protection from individual creditors of one spouse.39

Section III: The New Paradigm: A Hybrid System for Laminar Flow

The fatal flaw of the “single stream” model is its rigidity.

It forces a complex, dynamic relationship into a simple, static structure, creating the pressure that leads to turbulence.

The solution, therefore, is not to abandon joint accounts but to design a more sophisticated and flexible system of conduits—one that honors both the need for shared goals and the reality of individual autonomy.

This “Hybrid Conduit System” is designed to reduce friction, relieve pressure, and deliberately engineer a state of laminar flow.

Step 1: Diagnosing the Flow – Understanding Your Unique Fluid Properties

Before we can build the system, we must first measure the properties of the fluids that will flow through it.

This diagnostic phase is critical for customizing the design to the unique dynamics of each couple.

The process begins with each partner independently completing a psychometrically sound risk tolerance assessment.¹⁴

The objective here is not to arrive at a single, blended score, but to clearly identify the

delta—the difference in risk appetite between the two individuals.¹⁴

Is one a 9 (aggressive) and the other a 3 (conservative)? Or are they a 6 and a 7? Quantifying this gap is the first step in understanding the potential for viscosity-driven conflict.

This quantitative assessment is followed by a series of structured, qualitative conversations.

We discuss not just goals, but the time horizons for those goals.⁴⁹

A long time horizon, such as retirement 30 years away, can accommodate a more aggressive, higher-velocity flow because there is ample time to recover from market downturns.

A short time horizon, like saving for a house down payment in three years, demands a more conservative, predictable, and laminar approach to protect the principal.⁶

We also delve into their personal financial histories and their deepest fears and wishes around money, which often reveal the emotional underpinnings of their risk profiles.⁴

This combined process gives us a clear picture of the couple’s unique

Financial Viscosity—their combined, and often conflicting, internal resistance to the forces of market risk.

Step 2: Engineering the Hybrid Conduit System at Fidelity

Armed with this diagnostic data, we can now engineer a system of accounts at Fidelity that is custom-built to manage their specific dynamics.

The system consists of three primary conduits:

• The Main River (The Joint Account): This is the central channel for the couple’s shared journey. We establish one Fidelity Joint Brokerage Account that is dedicated exclusively to clearly defined, shared, long-term goals, such as retirement.² For married couples in an eligible state, we register this as
  Tenancy by the Entirety (TBE) to build in that crucial layer of asset protection.³⁹ If TBE is not available, JTWROS is the next best option for its estate planning benefits.

• Funding: Contributions to this account are automated and based on a pre-agreed formula, whether that is an equal split or a percentage proportional to each partner’s income.⁵³ This removes the recurring decision-making and potential for conflict.
• Strategy: The investment strategy for this account is the product of careful negotiation. It might be a “meet in the middle” asset allocation that balances their two risk profiles.⁵ A powerful solution for couples who wish to outsource the day-to-day management is to use
  Fidelity Go®, the platform’s robo-advisory service. We can set the risk profile for the Fidelity Go® account to the couple’s agreed-upon level, and the service will automatically manage the portfolio and handle rebalancing, effectively serving as the professionally engineered “riverbed” that keeps their main flow on course without emotional intervention.⁵⁴
• The Pressure-Relief Valves (Individual Accounts): This is the crucial innovation that prevents the system from building up destructive pressure. Each partner maintains their own, separate Individual Fidelity Brokerage Account.⁵³

• Purpose: These accounts are zones of complete financial autonomy. This is where Mark Miller can take a flyer on a speculative biotech stock, and where Sarah Miller can build a cash reserve that helps her sleep at night. They can do so without needing the other’s permission and without the fear of judgment that comes from a fully transparent, all-in-one account.⁵⁷ This structural separation is the single most effective antidote to the behaviors that lead to financial infidelity; when autonomy is granted, the need for secrecy diminishes.¹¹
• Funding: These accounts are funded by an automated transfer of a discretionary “allowance” from each paycheck—an amount the couple agrees upon in advance during their planning sessions.³²

Step 3: The Control Panel – Using Fidelity’s Tools to Manage the System

A well-engineered system of pipes is useless without a control panel to monitor and manage the flow.

Fidelity’s digital tools provide precisely this functionality, allowing the couple to achieve both structural separation and informational transparency.

• Fidelity Full View® (The Central Dashboard): This tool is the linchpin of the entire system. Full View® is an account aggregation service that allows a user to link all of their financial accounts—both at Fidelity and elsewhere—into a single, comprehensive dashboard.⁵⁹ For our couple, this means they can log in and see a holistic, real-time picture of their entire net worth: the balance of their shared “Main River” account, and the balances of each of their individual “Pressure-Relief Valve” accounts, all in one place.⁶¹ This master view satisfies the deep-seated need for openness and trust that drives couples to merge finances in the first place ¹, but it does so without forcing them into a single, conflict-prone operational account.
• Automated Investments (The Pumps & Sluice Gates): We use Fidelity’s automatic investment features to set up the recurring transfers from their bank accounts into the three brokerage accounts.⁶² This automates the plan, ensuring the system runs consistently and predictably, reducing the number of manual financial decisions that can become points of friction.
• Authorized Access & Alerts (The Monitoring System): To further build trust, spouses can grant each other “Inquiry Access” on their individual accounts. This allows their partner to view account balances and activity without granting them the ability to trade or make withdrawals.⁶⁴ It’s a powerful statement: “I have nothing to hide, and I trust you not to interfere in my autonomous zone.” Additionally, they can set up alerts for large transactions or significant balance changes, ensuring both partners remain informed of major financial events without needing to constantly police each other’s activity.⁶⁵

This hybrid system resolves the central paradox of joint finances—the conflict between the desire for unity and the need for autonomy.

It achieves this by brilliantly separating the structure of the accounts from the transparency of the finances.

The “all-in” model fails because it conflates the two, creating conflict.

The “completely separate” model fails because it lacks both, fostering secrecy and a transactional mindset.⁵⁷

The hybrid model, enabled by Fidelity’s platform, allows a couple to say, “I see our entire financial world together on one screen, and I honor your freedom to manage your part of it as you see fit.” This combination of total transparency and respected autonomy is the key to reducing the pressure in the system and achieving a sustainable, efficient, and harmonious laminar flow.

Section IV: The Success Story: The Garcias Find Their Laminar Flow

When I first met Elena and David Garcia, the turbulence in their financial life was palpable.

David, a successful tech entrepreneur, had a high-risk, high-growth mindset.

Elena, a pediatrician, prioritized stability and long-term security for their two young children.

Their single joint account was a source of constant stress.

David saw Elena’s large cash holdings as “unproductive capital,” while Elena saw David’s investments in volatile startups as a threat to their family’s foundation.

They argued about everything from funding their 529 plans to the cost of their family vacations, with each discussion leaving them feeling misunderstood and resentful.⁶⁶

They were working incredibly hard but felt like they were getting nowhere.

We began by implementing the Financial Flow Dynamics model.

Diagnosis: The first step was to separate them for the diagnostic process.

Independently, they each completed a detailed risk tolerance questionnaire.

The results were stark: David scored a 9.2 (Aggressive Growth), while Elena scored a 4.5 (Moderately Conservative).

We then moved to a guided conversation about their goals, fears, and timelines.

The key discovery was a fundamental misalignment in their retirement horizons.

David envisioned working until he was 70, allowing for a long runway of aggressive growth.

Elena dreamed of cutting back her hours at 60 to spend more time with future grandchildren, a goal that required a more conservative approach to preserve capital.⁶⁸

This unstated difference was the primary source of their conflict; they were trying to power their shared financial engine with two different destinations programmed into the GPS.

Engineering their Fidelity System: With a clear understanding of their “fluid properties,” we designed their new conduit system.

1. The Main River: They established a new Fidelity Joint Brokerage Account, registered as Tenants by the Entirety (TBE) for asset protection, given David’s role as a business owner.³⁹ This account was explicitly earmarked for their shared goal of a comfortable retirement, with a target date of age 65 as a compromise. The asset allocation was a negotiated 60% equity, 40% fixed income portfolio—a blend that David could live with and that gave Elena the stability she needed.⁵⁸
2. The Pressure-Relief Valves: They each opened a separate, individual Fidelity Brokerage Account. They agreed that after funding their joint account and household expenses, 10% of their remaining monthly income would be split evenly and automatically transferred into these individual accounts for “no-questions-asked” use.⁶² David immediately used his to invest in a high-risk tech fund, and Elena used hers to build a ladder of U.S. Treasury bonds. The relief was immediate and visible.

Management and Monitoring: The final piece was the control panel.

We linked all three accounts, plus their checking, savings, and 529 plans, into Fidelity Full View®.⁵⁹

They then scheduled a recurring calendar appointment for the first Sunday of every month, which they called their “Flow Review.” Over coffee, they would log into their Full View dashboard together.

The conversation shifted entirely.

Instead of arguing about past transactions, they began having collaborative, forward-looking discussions.

“Look at the progress in the joint account,” Elena would say, pointing to the steady growth.

“The tech fund in my individual account is down this month, but that’s okay, it’s long-term play money,” David would add, feeling no need to be defensive.

The Result: Laminar Flow: Within six months, the transformation was extraordinary.

The arguments about money ceased completely.

By creating separate conduits for their different “viscosities” (risk tolerances) and a shared dashboard for transparency, we had eliminated the sources of friction.

They felt like a team again, watching their shared “river” of assets flow smoothly and powerfully toward their goals, while also enjoying the personal freedom of their individual “reservoirs.” They had moved from a state of chaotic, energy-wasting turbulence to one of efficient, harmonious, and predictable laminar flow.

Their net worth began to climb more rapidly than ever before, not because their income changed, but because the energy of their financial life was finally flowing in the same direction.⁶⁹

Conclusion: The Art of the Confluence

I often think back to that first meeting with the Millers and the dozens of couples like them who have sat across my desk, trapped in a cycle of financial conflict.

The traditional advice failed them because it was based on a flawed premise—that unity requires uniformity.

It asks two unique individuals to erase their financial identities and become one, and when they inevitably fail, it offers no recourse but frustration.

The goal of a financial planner, as I have come to understand it, is not simply to be an asset manager who builds a dam to hold a large reservoir of wealth.

It is to be a river engineer.

It is to understand the unique properties of the individual streams—their speed, their temperature, their force—and to design the channels, gates, and reservoirs that allow them to merge into a confluence that is both powerful and harmonious.

Managing joint finances is an act of engineering, not just accounting.

It requires designing a system that respects the complex physics of a relationship.

A well-designed system, like the Hybrid Conduit model enabled by the powerful and integrated tools on the Fidelity platform, does more than just build wealth.

It builds trust.

It fosters communication.

It honors both the shared journey and the individual spirit.

It transforms a source of conflict into a source of strength, creating a more resilient and prosperous partnership.¹

The path to financial peace lies not in forcing a single, turbulent stream, but in mastering the elegant and powerful art of the confluence.

Works cited

1. Common Cents: Bank Account Structure and Couples’ Relationship Dynamics | Journal of Consumer Research | Oxford Academic, accessed August 12, 2025, https://academic.oup.com/jcr/article/50/4/704/7077142?guestAccessKey=32d8dc66-db46-45ab-a360-57a401a01af9&login=false&utm_source=authortollfreelink&utm_campaign=jcr&utm_medium=email
2. What Is a Joint Brokerage Account and When Should You Use One? – SmartAsset.com, accessed August 12, 2025, https://smartasset.com/investing/joint-brokerage-account
3. Managing Financial Stress in Your Relationship- Couples Therapy Guide, accessed August 12, 2025, https://www.abundancetherapycenter.com/blog/navigating-financial-stress-with-your-partner
4. Happy couples: How to avoid money arguments – American Psychological Association, accessed August 12, 2025, https://www.apa.org/topics/money/conflict
5. Can you and your partner compromise on investment risk? – Edward Jones, accessed August 12, 2025, https://www.edwardjones.com/us-en/market-news-insights/guidance-perspective/compromising-investment-risk
6. What Happens When Our Investor Risk Tolerance is Different? – Fyooz Financial Planning, accessed August 12, 2025, https://www.fyoozfinancial.com/moneymatters-blog/youresoaggressivesometimes
7. Should couples combine their finances? – Fidelity Investments, accessed August 12, 2025, https://www.fidelity.com/learning-center/smart-money/combine-finances-after-marriage
8. How individuals perceive their partner’s relationship behaviors when worrying about finances – PMC, accessed August 12, 2025, https://pmc.ncbi.nlm.nih.gov/articles/PMC11136612/
9. Couples and Money | Psychology Today, accessed August 12, 2025, https://www.psychologytoday.com/us/blog/mental-wealth/202305/couples-and-money
10. Financial infidelity – Wikipedia, accessed August 12, 2025, https://en.wikipedia.org/wiki/Financial_infidelity
11. Understanding Financial Infidelity: It’s About Trust — Not Money – Spaugh Dameron Tenny, accessed August 12, 2025, https://www.sdtplanning.com/blog/financial-infidelity-its-not-about-the-money-its-about-trust
12. Love, Lies, and Money: Financial Infidelity in Romantic Relationships – Oxford Academic, accessed August 12, 2025, https://academic.oup.com/jcr/article/47/1/1/5610529
13. Top 6 Marriage-Killing Money Issues – Investopedia, accessed August 12, 2025, https://www.investopedia.com/articles/pf/09/marriage-killing-money-issues.asp
14. 4 Questions To Discover Couples’ Risk Tolerance Differences, accessed August 12, 2025, https://www.kitces.com/blog/questions-productive-conversations-risk-tolerance-assessment-couples-financial-advisor/
15. Fluid analogy of social cognitive theory, adapted from [60] – ResearchGate, accessed August 12, 2025, https://www.researchgate.net/figure/Fluid-analogy-of-social-cognitive-theory-adapted-from-60_fig2_277975975
16. Analogy and Analogical Reasoning – Stanford Encyclopedia of Philosophy, accessed August 12, 2025, https://plato.stanford.edu/entries/reasoning-analogy/
17. Understanding Laminar and Turbulent Flow – YouTube, accessed August 12, 2025, https://www.youtube.com/watch?v=9A-uUG0WR0w
18. Laminar flow – Wikipedia, accessed August 12, 2025, https://en.wikipedia.org/wiki/Laminar_flow
19. Laminar and Turbulent Flow – GeeksforGeeks, accessed August 12, 2025, https://www.geeksforgeeks.org/physics/laminar-and-turbulent-flow/
20. The Differences Between Laminar vs. Turbulent Flow | System Analysis Blog | Cadence, accessed August 12, 2025, https://resources.system-analysis.cadence.com/blog/msa2022-the-differences-between-laminar-vs-turbulent-flow
21. Turbulence – Wikipedia, accessed August 12, 2025, https://en.wikipedia.org/wiki/Turbulence
22. Turbulence (fluid dynamics) | EBSCO Research Starters, accessed August 12, 2025, https://www.ebsco.com/research-starters/science/turbulence-fluid-dynamics
23. Turbulent Flows – Introduction to Aerospace Flight Vehicles – Eagle Pubs, accessed August 12, 2025, https://eaglepubs.erau.edu/introductiontoaerospaceflightvehicles/chapter/turbulent-flows/
24. USBR Water Measurement Manual – Chapter 2 – Basic Concepts …, accessed August 12, 2025, https://www.usbr.gov/tsc/techreferences/mands/wmm/chap02_02.html
25. Chapter 8 Flow in Conduits – User pages, accessed August 12, 2025, https://user.engineering.uiowa.edu/~fluids/posting/Lecture_Notes/Chapter8.pdf
26. The Impact of Pipe Roughness on Hydraulic Systems, accessed August 12, 2025, https://www.numberanalytics.com/blog/impact-pipe-roughness-hydraulic-systems
27. Flow and Pressure in Pipes Explained – Practical Engineering, accessed August 12, 2025, https://practical.engineering/blog/2021/4/6/flow-and-pressure-in-pipes-explained
28. Transition and Turbulence – Princeton University, accessed August 12, 2025, https://www.princeton.edu/~asmits/Bicycle_web/transition.html
29. What Beginners Should Know About Fluid Mechanics! – Skill-Lync, accessed August 12, 2025, https://skill-lync.com/blogs/technical-blogs/design-what-beginners-should-know-about-fluid-mechanics
30. Fluid Mechanics – GeeksforGeeks, accessed August 12, 2025, https://www.geeksforgeeks.org/physics/fluid-mechanics/
31. (PDF) Risk tolerance of married couples – ResearchGate, accessed August 12, 2025, https://www.researchgate.net/publication/228461546_Risk_tolerance_of_married_couples
32. Top 6 Ways That Couples Can Avoid Financial Conflict – Currency Exchange, accessed August 12, 2025, https://mycurrencyexchange.com/top-6-ways-that-couples-can-avoid-financial-conflict/
33. Bends, Flow and Pressure Drop in – Thermopedia, accessed August 12, 2025, https://www.thermopedia.com/content/577/
34. Pressure losses for fluid flow in curved pipes, accessed August 12, 2025, https://nvlpubs.nist.gov/nistpubs/jres/18/jresv18n1p89_a1b.pdf
35. Open a New Fidelity Trust Account | Brokerage account information form, accessed August 12, 2025, https://www.fidelity.com/bin-public/060_www_fidelity_com/documents/trust-account-application.pdf
36. Individual New Account – Application – Fidelity Institutional, accessed August 12, 2025, https://institutional.fidelity.com/app/proxy/content?literatureURL=/789590.PDF
37. Types of Brokerage Accounts | Charles Schwab, accessed August 12, 2025, https://www.schwab.com/brokerage/types-of-brokerage-accounts
38. Joint Brokerage Accounts: What You Need to Know – Investopedia, accessed August 12, 2025, https://www.investopedia.com/joint-brokerage-accounts-7497852
39. Help with Joint Brokerage Account Types : r/fidelityinvestments – Reddit, accessed August 12, 2025, https://www.reddit.com/r/fidelityinvestments/comments/156ot2k/help_with_joint_brokerage_account_types/
40. What Is a Joint Bank Account and Is It Right for You? – Better Money Habits, accessed August 12, 2025, https://bettermoneyhabits.bankofamerica.com/en/saving-budgeting/joint-bank-account
41. Asset Protection – Fidelity Investments, accessed August 12, 2025, https://www.fidelity.com/bin-public/060_www_fidelity_com/documents/asset-protection-family-conversation-guide.pdf
42. Investment Accounts: Transfer Of Death – Fidelity, accessed August 12, 2025, https://www.fidelity.com/life-events/estate-planning/asset-strategies/brokerage
43. Just married and want to make my account joint. What is the best …, accessed August 12, 2025, https://www.reddit.com/r/fidelityinvestments/comments/1g27irt/just_married_and_want_to_make_my_account_joint/
44. inherited-non-retirement-introduction.pdf – Fidelity Investments, accessed August 12, 2025, https://www.fidelity.com/bin-public/060_www_fidelity_com/documents/customer-service/inherited-non-retirement-introduction.pdf
45. Joint Tenancy Vs. Tenancy in Common Vs. Tenants by the Entireties – Dean Patrick – Probate Attorney, accessed August 12, 2025, https://patricklegal.com/co-ownership-joint-tenancy-common-entireties/
46. Know the Difference: Tenants by the Entirety vs. Joint Tenants with Rights of Survivorship, accessed August 12, 2025, https://www.planwellfp.com/know-the-difference-tenants-by-the-entirety-vs-joint-tenants-with-rights-of-survivorship/
47. Investment Risk Tolerance Assessment – College of Agriculture, Food and Natural Resources – University of Missouri, accessed August 12, 2025, https://cafnr.missouri.edu/divisions/division-of-applied-social-sciences/research/investment-risk-tolerance-assessment/
48. Five steps to finding your ideal investment mix – TIAA, accessed August 12, 2025, https://www.tiaa.org/public/pdf/Asset_Allocation_Guide_A38473.pdf
49. Investment portfolios: Asset allocation models – Vanguard, accessed August 12, 2025, https://investor.vanguard.com/investor-resources-education/education/model-portfolio-allocation
50. Couples Investing: How Much Risk To Take? | Wealthfront, accessed August 12, 2025, https://www.wealthfront.com/blog/couples-investing-risk-assessment/
51. Investment Time Horizon: Definition and Role in Investing – Investopedia, accessed August 12, 2025, https://www.investopedia.com/terms/t/timehorizon.asp
52. How couples can navigate different views – Fidelity Investments, accessed August 12, 2025, https://www.fidelity.com/learning-center/personal-finance/navigating-different-views
53. Here’s What Couples Need to Know About Merging Finances | Old National Bank, accessed August 12, 2025, https://www.oldnational.com/resources/insights/here-s-what-couples-need-to-know-about-merging-finances/
54. Fidelity Managed Accounts | Straightforward Investing, accessed August 12, 2025, https://www.fidelity.com/managed-accounts/overview
55. Fidelity Go | Invest With Our Robo Advisor, accessed August 12, 2025, https://www.fidelity.com/managed-accounts/fidelity-go/overview
56. Simple investing and financial advice – Fidelity Investments, accessed August 12, 2025, https://digital.fidelity.com/prgw/digital/fppa/fidelity-go/all-type-selection
57. Merging Finances: Should We Keep it Separate or Create Joint Accounts? – HelloPrenup, accessed August 12, 2025, https://helloprenup.com/finances/merging-finances-should-we-keep-it-separate-or-create-joint-accounts/
58. How to Navigate Different Risk Tolerances Between Spouses, accessed August 12, 2025, https://convergence-co.com/financial/different-risk-tolerances-between-spouses/
59. FAQs | Full View | Fidelity Cash Management – Fidelity Investments, accessed August 12, 2025, https://www.fidelity.com/cash-management/faqs-full-view
60. New Full View – Fidelity’s Full View just got smarter – Fidelity Investments, accessed August 12, 2025, https://www.fidelity.com/go/monitoring-your-financial-portfolio
61. Full View® Frequently Asked Questions (FAQs) – Fidelity Investments, accessed August 12, 2025, https://www.fidelity.com/go/full-view-faqs
62. Forms & Applications: All Forms – Fidelity Investments, accessed August 12, 2025, https://www.fidelity.com/customer-service/forms-applications/all-forms
63. Financial planning for life events: Marriage – Fidelity Investments, accessed August 12, 2025, https://www.fidelity.com/planning/investment/content/changein.shtml
64. How to Authorize Others to Access Your Accounts – Fidelity Investments, accessed August 12, 2025, https://www.fidelity.com/customer-service/account-access-rights-overview
65. Customer Service | Account features and management – Fidelity Investments, accessed August 12, 2025, https://www.fidelity.com/customer-service/account-maintenance
66. 7 of the Top Financial Conflicts Couples Face (and How To Overcome Them) – Nasdaq, accessed August 12, 2025, https://www.nasdaq.com/articles/7-top-financial-conflicts-couples-face-and-how-overcome-them
67. What are some financial disagreements you had with your partner and how did you resolve it? : r/PersonalFinanceCanada – Reddit, accessed August 12, 2025, https://www.reddit.com/r/PersonalFinanceCanada/comments/vel5wn/what_are_some_financial_disagreements_you_had/
68. Conflicts in Co-Investment Within Family Holdings – Attorney Aaron Hall, accessed August 12, 2025, https://aaronhall.com/conflicts-in-co-investment-within-family-holdings/
69. Financial planning case study for a young family – Independent Financial Advice Coleraine, accessed August 12, 2025, https://gibsonfp.com/financial-planning-case-study-for-a-young-family-independent-financial-advice-coleraine/
70. Case Study – Retirement Planning for Couples with Different Income Levels, accessed August 12, 2025, https://prosperityfinancialgroup.com/case-study-retirement-planning-for-couples-with-different-income-levels/
71. Client Case Studies – Financial Planning, accessed August 12, 2025, https://www.leveluplifeplanning.com/client-case-studies
72. Financial Planning for Couples – Fidelity Investments, accessed August 12, 2025, https://www.fidelity.com/go/financial-planning-couple