Asset Location Strategy: Where to Hold What Across Your Accounts

Asset Allocation Gets All the Attention. Asset Location Does the Heavy Lifting.

Most tech employees spend their financial planning energy deciding what to invest in. Should the portfolio be 80/20 stocks and bonds or 70/30? Large cap or small cap tilt? International exposure at 20% or 40%? These are important questions, but they address only half the equation.

Asset location is the decision of which account holds which investment. The same $1.5 million portfolio with the same allocation can produce dramatically different after tax returns depending on whether you hold your bond funds in a taxable brokerage or a pretax 401(k), and whether your highest growth positions sit in a Roth IRA or a regular brokerage account.

The difference compounds every year. Over a 20 to 30 year career, suboptimal asset location can cost $100,000 or more in unnecessary taxes. The fix requires no additional savings, no additional risk, and no changes to your overall allocation. You simply rearrange where each asset lives.

The Four Account Types Tech Employees Commonly Have

After a few years in tech, most employees accumulate assets across four distinct account types. Each has different tax treatment on contributions, growth, and withdrawals.

Taxable Brokerage

Funded with after tax dollars (often from RSU sales or general savings). Investment gains are taxed annually: short term capital gains and ordinary dividends at your marginal rate (up to 37%), qualified dividends and long term capital gains at preferential rates (0%, 15%, or 20% plus the 3.8% Net Investment Income Tax). You can harvest losses to offset gains.

Pretax 401(k)

Contributions reduce your taxable income today. All growth is tax deferred. Every dollar withdrawn in retirement is taxed as ordinary income regardless of whether the underlying gains came from stocks, bonds, or REITs. The current annual contribution limit is $23,500 ($24,500 for those under 50, $31,000 with age 50+ catch up).

Roth IRA and Roth 401(k)

Funded with after tax dollars. All qualified withdrawals, including decades of compounded growth, come out completely tax free. This makes the Roth the single most valuable account for assets with the highest expected long term growth.

Health Savings Account (HSA)

The only triple tax advantaged account in the tax code: contributions are pretax, growth is tax free, and qualified medical withdrawals are tax free. After age 65, nonmedical withdrawals are taxed as ordinary income (similar to a pretax 401(k)), but medical withdrawals remain completely tax free at any age. The 2026 contribution limit is $4,300 individual / $8,550 family.

The Core Principle

Put the least tax efficient assets in the most tax sheltered accounts. Put the most tax efficient assets in taxable accounts.

Tax efficiency refers to how much of an investment's return is lost to taxes each year. A total stock market index fund that generates mostly unrealized gains and small qualified dividends is highly tax efficient. A high yield bond fund that distributes interest taxed at ordinary income rates is tax inefficient. A REIT fund that distributes most of its return as nonqualified dividends (taxed at ordinary rates up to 37%) is among the least tax efficient assets available.

When a tax inefficient asset sits inside a pretax 401(k), its annual tax drag drops to zero during the accumulation phase. The same asset in a taxable account generates a tax bill every single year. Meanwhile, a tax efficient index fund in a taxable account generates minimal annual taxes and qualifies for favorable long term capital gains rates when sold.

What Goes Where

Key insight for taxable accounts: index funds with low turnover (under 5% annually) generate almost no short term capital gains distributions. Qualified dividends from U.S. equities are taxed at 15% or 20%, not your marginal rate. And you can harvest losses to offset gains elsewhere. These features make index funds far more tax efficient than bonds or REITs in a taxable account.

Concrete Scenario: $1.5 Million Portfolio

Consider a senior engineer with $1.5 million spread across four accounts:

• Taxable brokerage: $700,000 (accumulated RSU sale proceeds)
• Pretax 401(k): $450,000
• Roth IRA: $200,000
• HSA: $150,000

Target allocation: 70% equities, 20% bonds, 10% REITs. That means $1,050,000 in equities, $300,000 in bonds, and $150,000 in REITs.

Naive Allocation (Equal Proportions Everywhere)

Many people hold the same 70/30/10 mix in every account. This means the taxable brokerage holds $140,000 in bonds generating taxable interest and $70,000 in REITs distributing ordinary income. At a 35% marginal rate, the bond interest ($140,000 at 5% yield = $7,000) costs $2,450 in annual taxes. The REIT distributions ($70,000 at 4% yield = $2,800) cost another $980. Total annual tax drag from suboptimal placement: approximately $3,430 just from these two positions.

Optimized Allocation

Move all bonds ($300,000) and REITs ($150,000) into the pretax 401(k), where their distributions generate zero current tax. Fill the Roth IRA entirely with small cap and emerging market index funds ($200,000). Fill the HSA with the same high growth equity funds ($150,000). The taxable brokerage holds only total market index funds and any remaining equity allocation.

Annual tax savings: $3,000 to $8,000 depending on yields, turnover, and your marginal rate. Over 25 years at a 7% growth rate, that compounding tax savings amounts to $200,000 to $550,000 in additional after tax wealth. Same portfolio. Same risk. Same allocation. Just better placement.

Common Mistakes

Holding bonds in a taxable account. Bond interest is taxed at ordinary income rates (up to 37%). Every dollar of bond interest in a taxable account loses roughly a third to taxes. The same bonds inside a pretax 401(k) generate zero current tax liability.

Holding REITs in a Roth. REITs produce moderate total returns (6% to 8% historically) but are highly tax inefficient because their distributions are taxed as ordinary income. However, the Roth's power comes from sheltering the highest growth assets. Holding a moderate return, tax inefficient asset in a Roth wastes the account's most valuable feature: unlimited tax free growth. Put REITs in the pretax 401(k) and reserve the Roth for assets expected to grow the most.

Ignoring the HSA as an investment vehicle. Most tech employees leave their HSA balance in a default money market fund. With a $150,000 HSA balance invested in a small cap index fund earning 10% annually versus sitting in a money market fund at 4%, the difference over 20 years is roughly $350,000 in additional tax free growth. Pay current medical expenses out of pocket, save the receipts, and let the HSA compound.

Keeping concentrated company stock in taxable. After RSU vests, many employees hold company stock in their brokerage indefinitely. This creates both concentration risk and tax inefficiency (if the stock pays no qualified dividends or generates frequent taxable events from corporate actions). Sell the concentrated position, harvest any losses, and redeploy the proceeds into the optimal asset location framework.

Rebalancing Across Accounts

Traditional rebalancing advice says to sell overweight positions and buy underweight ones. In a multi account framework, this approach can trigger unnecessary capital gains in taxable accounts.

Better approach: rebalance with new contributions. Direct your next 401(k) contributions toward the underweight asset class in that account. Redirect RSU sale proceeds in your taxable brokerage toward whatever is underweight there. This gradually restores your target allocation without triggering any taxable events.

When you must sell to rebalance, do it inside the pretax 401(k) or Roth IRA first. Selling and buying within these accounts has zero tax consequences. Reserve taxable account rebalancing for situations where contribution based rebalancing cannot close the gap within a reasonable timeframe (typically 6 to 12 months).

Tax loss harvesting as a rebalancing tool. If your taxable brokerage is overweight in a position that happens to be at a loss, selling it accomplishes both rebalancing and harvesting a tax deduction. Replace the sold fund with a similar (but not substantially identical) fund to maintain your target allocation.

When Asset Location Matters Less

Asset location is most valuable when you have significant assets across multiple account types with meaningfully different tax treatments. It matters less in two situations:

Nearly all wealth is in one account type. If 90% of your portfolio is in a taxable brokerage (common for early career employees whose RSU proceeds dwarf their 401(k) balance), there is limited opportunity to shift assets between accounts. Focus on maximizing contributions to tax advantaged accounts first, then optimize location as balances grow.

Your entire portfolio is broad index funds with similar tax efficiency. If every account holds VTI or a total market fund, there is little tax drag to eliminate because the underlying assets are already highly tax efficient. The benefit of asset location comes from the difference in tax efficiency between asset classes. When all your assets have similar efficiency, placement matters less.

For most tech employees with $500,000 or more across multiple account types, asset location is one of the highest return, zero cost optimizations available. It requires no additional savings, no additional risk, and no change to your investment strategy. It simply ensures that the IRS takes the smallest possible share of your returns each year.