Taxable vs. Tax-Advantaged Accounts: How Account Type Changes Long-Term Results

Where you hold an investment can matter almost as much as what you hold. Tax-advantaged accounts, such as 401(k)s, IRAs, and HSAs, either defer taxes or make growth tax-free. Taxable brokerage accounts generally tax dividends, interest, and realized gains along the way. Over decades, those annual taxes, often called tax drag, add up.

The short version

• Tax-advantaged accounts let money grow without annual taxes on dividends, interest, and gains.
• Taxable accounts offer flexibility and no contribution limits, but annual taxes reduce compounding.
• In our example, $500 a month for 30 years grows to about $610,000 without tax drag and about $502,000 with one percentage point of annual tax drag.
• Asset location means putting tax-inefficient investments in tax-advantaged accounts and tax-efficient ones in taxable accounts, where possible.

The effect of tax drag

A hypothetical investor contributes $500 a month for 30 years, earning 7% before taxes. In a taxable account, assume annual taxes reduce the return to 6%.

The tax-advantaged path ends about $108,000 higher. Withdrawals from traditional accounts are taxed later, so the final after-tax comparison depends on your future tax rate; see traditional vs. Roth.

Account types at a glance

Asset location

When you have both kinds of accounts, people often:

• hold tax-inefficient assets, such as taxable bonds or high-turnover funds, in tax-advantaged accounts;
• hold tax-efficient assets, such as broad index funds, in taxable accounts;
• use municipal bonds in taxable accounts where their tax-exempt income is most valuable.

See index funds and ETFs for why many index ETFs are tax-efficient.

Why taxable accounts still matter

• No contribution limits.
• No early withdrawal penalties.
• Long-term capital gains may be taxed at lower rates than ordinary income.
• Opportunities for tax-loss harvesting.
• Assets may receive a basis adjustment at death under current law.

The takeaway

Tax-advantaged accounts let more of your return compound. Use them first where possible, place investments thoughtfully across account types, and use taxable accounts for flexibility and goals beyond retirement limits.