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Investing $100K: The Most Tax-Efficient Account Order

What is the most tax-efficient way to invest $100,000?

The most tax-efficient way to invest $100,000 is to place each dollar into the account type that gives you the biggest tax advantage first, then match the investments to the right account (“asset location”). Our team typically organizes this as a simple priority list so you can move quickly without overcomplicating the plan.

Step 1: Capture any “free money” and immediate deductions

If your workplace plan offers an employer match, direct enough of the $100,000 to your 401(k)/403(b) to get the full match. Next, if you’re eligible, fund an HSA (often the most tax-efficient account because contributions can be pre-tax, growth is tax-deferred, and qualified withdrawals are tax-free).

Step 2: Max out IRA options that fit your income and goals

After the match and HSA, prioritize an IRA. A Roth IRA can be powerful for long-term, tax-free growth if you qualify, while a Traditional IRA may provide an upfront deduction (depending on income and workplace coverage). If your income is high, a backdoor Roth strategy may be relevant, but it has rules worth getting right.

Step 3: Use a taxable brokerage account—strategically

If you still have money left, invest the remainder in a taxable brokerage account with tax efficiency in mind. Favor broad-market index funds and ETFs with low turnover, and lean on qualified dividends and long-term capital gains where possible. Keep good records, and consider tax-loss harvesting in down markets to offset gains.

Step 4: Match assets to accounts (asset location)

Place tax-inefficient holdings (like taxable bonds, REITs, and high-turnover strategies) inside tax-advantaged accounts when you can. Use your taxable account for more tax-efficient stock index funds and, if you need bonds in taxable, consider municipal bond funds when appropriate for your tax bracket.

Step 5: Keep it clean—fees, rebalancing, and timing

Use low-cost diversified funds, rebalance with new contributions when possible, and avoid frequent selling in taxable accounts. For a deeper walkthrough of account order and tax-efficient choices, see our guide: Tax-Efficient Investing: IRAs, 401(k)s, HSAs, and Taxable Accounts.

FAQ

Should you invest in a taxable account after maxing retirement accounts?

Yes—once you’ve prioritized employer match and maxed the tax-advantaged accounts available to you, a taxable brokerage account is the next place to invest. Focus on tax-efficient funds and minimize short-term trading to reduce annual tax drag.