Where to Put Money Beyond 401(k)s With Non-Retirement Accounts

What Non-Retirement Investment Accounts Actually Offer at $5M+

Once you've maxed every tax-advantaged account available to you, the real question isn't whether to use non-retirement investment accounts. It's how to structure them to minimize tax drag, preserve optionality, and move wealth across generations efficiently. The flexibility cuts both ways: more control, more complexity, and more decisions that compound over decades.

How Non-Retirement Investment Accounts Differ from IRAs and 401(k)s

The structural differences matter more than most generic financial content acknowledges. Retirement accounts trade flexibility for tax advantages. Non-retirement accounts do the opposite: no contribution limits, no withdrawal restrictions, no required minimum distributions, and no penalty for accessing capital before age 59½.

That last point is the one that matters most for early retirees. If you're leaving work at 45 with a $10M portfolio, your taxable brokerage accounts are the primary funding source for the first 14+ years before penalty-free retirement account access begins.

The other structural distinction worth understanding: assets held in taxable brokerage accounts receive a stepped-up cost basis at the owner's death under IRC Section 1014. That means embedded capital gains accumulated over decades can be permanently eliminated at transfer. Assets inside a traditional IRA or 401(k) carry no such benefit. Every dollar withdrawn by heirs is taxed as ordinary income.

That single feature makes the taxable account a more powerful estate planning tool than its tax-deferred counterparts in many scenarios, particularly for investors holding highly appreciated positions they never intend to sell.

Non-Retirement Account Types Worth Knowing at Scale

Individual taxable brokerage accounts are the workhorse. No structural complexity, full investment flexibility, and direct ownership of every position. For various wealth holding vehicles at this level, the individual account is often the baseline from which more sophisticated structures branch.

Joint accounts with rights of survivorship simplify transfer at death for married couples but create joint ownership of all positions, which matters for estate planning and creditor protection depending on your state.

Trust accounts are where the real planning happens. A revocable living trust holding taxable brokerage assets maintains the stepped-up basis benefit while avoiding probate. Irrevocable trust structures, covered in more detail in the estate planning section below, can do considerably more.

Account types relevant to the $5M+ investor:

• Individual taxable brokerage: Full flexibility, direct ownership, tax-loss harvesting capable
• Joint brokerage (JTWROS): Simplified spousal transfer, shared ownership implications
• Revocable living trust account: Probate avoidance, retained control, stepped-up basis preserved
• Irrevocable trust account (IDGT, GRAT, dynasty trust): Estate freeze, generation-skipping, advanced tax planning
• LLC or LP holding account: Asset protection, valuation discounts, family wealth transfer
• DAF (Donor-Advised Fund): Charitable giving with immediate deduction, appreciated asset contribution

Custodial accounts and 529 plans are legitimate tools but solve problems that most FATFIRE readers solved years ago. The planning leverage at this level sits in trust structures and entity-owned accounts.

Tax Advantages of Taxable Brokerage Accounts for High-Net-Worth Investors

The tax profile of a taxable account is more nuanced than the standard "you pay taxes on gains" summary suggests. Understanding the full picture changes how you structure positions.

Long-term capital gains are taxed at 0%, 15%, or 20% depending on taxable income, according to IRS Topic No. 409. But the number most financial content ignores: the Net Investment Income Tax of 3.8% under IRC Section 1411 applies to investment income above $200,000 for single filers and $250,000 for married filers. For virtually every FATFIRE investor, the effective long-term capital gains rate is 23.8%, not 20%.

That 3.8% surcharge changes the math on several decisions. Municipal bonds, often dismissed as low-yield, become considerably more attractive when your alternative is a 23.8% effective rate on taxable bond income. A muni yielding 3.5% is equivalent to a 4.6% taxable yield for an investor in the 37% federal bracket facing NIIT. Whether that clears your hurdle rate depends on your specific situation, but the comparison is rarely as unfavorable as the headline yield suggests.

Qualified dividends receive the same preferential rate treatment as long-term capital gains. Ordinary dividends, short-term gains, and interest income are taxed at your marginal rate, which at $5M+ in annual income often means 37% federal plus state.

The tax implications of non-retirement accounts extend beyond the rate structure to timing, location, and harvesting strategy, each of which compounds meaningfully over a multi-decade holding period.

How Tax-Loss Harvesting Works in a $5M+ Taxable Portfolio

Tax-loss harvesting is one of the few genuinely free lunches available in taxable accounts, though the IRS has built in constraints worth understanding precisely.

The mechanics: you sell a position at a loss, realize that loss for tax purposes, and immediately reinvest in a similar (but not substantially identical) security to maintain market exposure. The realized loss offsets capital gains dollar-for-dollar, and up to $3,000 of excess losses can offset ordinary income annually. Unused losses carry forward indefinitely.

The constraint is the wash-sale rule. Per IRS Publication 550, the IRS disallows a loss deduction when a substantially identical security is purchased within 30 days before or after the sale. Selling SPY and buying VOO likely survives scrutiny given they track different indexes. Selling a specific stock and buying it back within 30 days does not.

For a $5M taxable portfolio generating 8% average annual returns, systematic tax-loss harvesting during volatile years can defer or permanently eliminate capital gains taxes on $40,000 to $75,000 of gains annually. Combined with step-up basis planning at death, those deferred gains may never be taxed at all. Research published in the Journal of Financial Planning indicates that systematic tax-loss harvesting can generate after-tax alpha of 0.5% to 1.5% annually for high-net-worth investors, depending on portfolio size and market volatility.

The permanent elimination scenario is the key insight. If you harvest losses throughout your life, hold the replacement positions with embedded gains, and those positions transfer to heirs with a stepped-up basis, the deferred tax liability disappears entirely. That's not tax deferral. That's tax elimination.

Charitable giving adds another dimension. Contributing highly appreciated positions directly to a donor-advised fund or charitable remainder trust avoids capital gains entirely while generating a fair market value deduction. For tax strategy adjustments for high earners, the combination of harvesting, step-up planning, and charitable giving represents the most powerful tax management toolkit available in taxable accounts.

Asset Location Strategy: What Goes Where Across Account Types

Asset location is where Vanguard's research on after-tax returns becomes concrete. Vanguard's principles for investing success demonstrate that placing tax-inefficient assets in tax-advantaged accounts and tax-efficient assets in taxable accounts adds meaningful after-tax returns over time. The question is which assets belong where.

Fidelity's asset location guidance recommends holding high-yield bonds, REITs, and actively managed funds in tax-deferred accounts, while broad index funds, municipal bonds, and individual equities with embedded gains belong in taxable accounts.

The logic: REITs distribute most income as ordinary dividends, taxed at your marginal rate in a taxable account. Inside a traditional IRA, that income compounds tax-deferred. Index funds, by contrast, generate minimal taxable events and benefit from the stepped-up basis treatment at death, making them ideal taxable account holdings.

This matrix isn't static. As your tax situation changes, particularly during low-income years when Roth conversions make sense, the optimal location shifts. Revisit it annually with your tax attorney.

For high net worth investment opportunities, asset location decisions often matter more than security selection. A 0.5% annual after-tax improvement on a $10M portfolio is $50,000 per year, compounding.

What Is the Optimal Account Sequencing Strategy for FIRE Investors?

The conventional guidance on withdrawal sequencing says: draw from taxable accounts first, then tax-deferred, then Roth. The logic is that tax-deferred and Roth accounts benefit from continued compounding, so you preserve them as long as possible.

That logic is incomplete for FATFIRE investors with large traditional IRA balances.

Morningstar's research on withdrawal sequencing supports a structured approach to drawing from taxable accounts first in early retirement, but with an important caveat: this is optimal only when your current marginal rate is lower than your projected future rate. If you're sitting on a $5M traditional IRA that will generate substantial RMDs starting at age 73, your future marginal rate may be higher than your current rate during early retirement.

The implication: deliberately slow your taxable account drawdown during low-income years in early retirement and instead execute Roth conversions. Convert traditional IRA assets to Roth up to the top of your current bracket, paying tax now at a lower rate than you'd face on forced RMDs later. This preserves tax-loss harvesting opportunities in the taxable account while reducing the future RMD burden.

The sequencing decision also affects estate planning. Taxable accounts with stepped-up basis are more valuable to leave to heirs than pre-tax IRA assets, which heirs must withdraw and pay ordinary income tax on within 10 years under the SECURE Act. Roth accounts, with no RMDs and tax-free growth, are the most valuable to leave to heirs. Optimal sequencing often means spending pre-tax IRA assets (or converting them) before drawing down Roth or taxable accounts.

For strategic saving and investment approaches that account for this complexity, the sequencing decision deserves as much attention as asset allocation.

GRATs, IDGTs, and Dynasty Trusts: Advanced Structures for Taxable Account Assets

Standard financial content stops at "consider a trust." The FATFIRE-relevant question is which trust structure fits which asset and what the current rate environment means for each option.

GRATs (Grantor Retained Annuity Trusts) work by transferring assets to a trust, receiving annuity payments back over the trust term, and passing any appreciation above the IRS Section 7520 hurdle rate to heirs gift-tax free. Under IRC Section 2702, the gift tax value of the remainder interest is calculated using that hurdle rate. In a high-rate environment (the Section 7520 rate tracked above 5% through much of 2023 and 2024), assets must appreciate faster than that rate to transfer any wealth. GRATs become less effective when rates are elevated, which shifts planning emphasis.

IDGTs (Intentionally Defective Grantor Trusts) offer a different mechanism. According to the American Bar Association's analysis of IDGT planning, a grantor can sell appreciated assets, including concentrated stock positions from a taxable brokerage account, to the trust in exchange for a promissory note without triggering capital gains tax. The "defect" means the grantor pays income tax on trust earnings, effectively making additional tax-free gifts to the trust. IDGTs are less rate-sensitive than GRATs and work well for income-producing assets in a high-rate environment.

Dynasty trusts, available in states including South Dakota, Nevada, and Delaware, hold taxable investment account assets across multiple generations without estate tax exposure at each generational transfer. For ultra-high-net-worth families, sheltering a $10M taxable portfolio in a dynasty trust can eliminate the 40% federal estate tax at each generational transfer, potentially preserving hundreds of millions in appreciation over multiple generations.

The interaction between these structures and taxable brokerage accounts is where your estate attorney earns their fee. The stepped-up basis benefit applies to assets held in a revocable trust but generally not to assets transferred irrevocably during life. That tradeoff, giving up the step-up to freeze the estate, is worth analyzing carefully with specific numbers before committing.

Are Municipal Bonds Worth It for Investors in the 37% Federal Tax Bracket?

For most FATFIRE investors, yes. But the calculation requires precision.

The tax-equivalent yield formula: divide the muni yield by (1 minus your combined marginal rate). At 37% federal plus 3.8% NIIT plus a 5% state rate, a combined marginal rate of roughly 45.8% means a 3.5% muni yield is equivalent to a 6.46% taxable yield. That clears most investment-grade bond alternatives comfortably.

The AMT consideration complicates this for some investors. Private activity bonds, a subset of municipal bonds, can trigger the Alternative Minimum Tax for investors subject to AMT. If you're in an AMT position, verify whether specific muni issues are AMT-exempt before purchasing. Most general obligation bonds are; many revenue bonds are not.

Geographic concentration is the other consideration. Owning your home state's munis avoids state income tax on top of the federal exemption, improving the tax-equivalent yield further. The tradeoff is concentration in a single state's credit risk. For a $2M muni allocation, diversifying across multiple states and accepting the state tax on out-of-state bonds is often the better risk-adjusted decision.

For non-traditional investment diversification options, munis fit within a broader fixed-income allocation that accounts for both yield and tax treatment simultaneously.

Building a Non-Retirement Account Strategy Around a $5M+ Portfolio

The account structure question and the investment question are inseparable at this level. Here's how the pieces fit together for a representative FATFIRE investor: early 50s, $12M net worth, $7M in taxable accounts, $3M in tax-deferred accounts, $2M in Roth.

The taxable account holds broad equity index funds (low turnover, step-up eligible), individual stock positions with embedded gains (held for step-up, harvested against losses opportunistically), and a muni bond ladder covering 3-5 years of living expenses. High-yield bonds and REITs sit inside the traditional IRA. The Roth holds the highest-expected-return positions, since that growth is permanently tax-free.

Withdrawal sequencing during early retirement prioritizes the taxable account for living expenses while executing Roth conversions up to the top of the 24% bracket. The goal is reducing the traditional IRA balance before RMDs begin at 73, while preserving taxable account assets for their step-up benefit and ongoing harvesting opportunities.

Estate planning runs through a revocable living trust for probate avoidance, with a portion of the taxable account earmarked for an IDGT holding concentrated positions that would otherwise generate a large capital gains event if sold. A dynasty trust in South Dakota holds a diversified equity portfolio intended for the next two generations.

You can benchmark your non-retirement savings by age to contextualize where your taxable account balance sits relative to peers, though at the FATFIRE level the more useful benchmark is whether your account structure is optimized for your specific tax situation, not whether the balance is "average."

The investment timing across different life stages matters less than the structural decisions made once you've accumulated. Getting the account type, location, and trust structure right on a $7M taxable portfolio is worth more than marginal return optimization.

For those still building toward this level, age-based asset allocation strategies provide a useful framework, though the tax optimization layer becomes the dominant consideration once taxable accounts exceed $2-3M.

The diverse paths to building wealth that FATFIRE members have taken often result in concentrated positions, complex tax situations, and estate planning needs that generic brokerage account guidance simply doesn't address. The taxable account, structured correctly, is where much of that complexity gets resolved.

References

• Internal Revenue Service -- "Publication 550: Investment Income and Expenses" (2024).
• Internal Revenue Service -- "IRC Section 1014: Basis of Property Acquired from a Decedent".
• Internal Revenue Service -- "IRC Section 2702 and Grantor Retained Annuity Trusts (GRATs)".
• Internal Revenue Service -- "Topic No. 409: Capital Gains and Losses" (2024).
• Vanguard -- "Vanguard's Principles for Investing Success" (2023).
• Morningstar -- "The Bucket Approach to Retirement Allocation" (2023).
• Journal of Financial Planning -- "Tax-Loss Harvesting: The Art of Turning Lemons into Lemonade" (2022).
• Fidelity Investments -- "Tax-Smart Investing: Asset Location Guide" (2024).
• American Bar Association -- "Intentionally Defective Grantor Trusts: Planning Opportunities and Pitfalls" (2022).
• Securities and Exchange Commission -- "Investor Bulletin: Margin Rules for Day Trading" (2023).