DailyDime

The U.S. tax code gives you six tools to shelter money from taxes. Most people use them in the wrong order.

A $6,000 annual contribution invested in a taxable brokerage account grows to roughly $509,000 over 30 years at a 7% annual return. That same $6,000, directed to a 401(k) with a typical employer match, grows to nearly $800,000 after taxes. Same investor, same dollars, same return rate. The only variable is the account.

The U.S. tax code offers six primary investment vehicles, each with a distinct tax structure. The order you fund them is not arbitrary, and getting it wrong is not a minor inefficiency. Use the calculator above to model your specific numbers; the section below explains the logic behind the ranking.

Comparison Calculator

Use this calculator to see the difference in after-tax returns for your situation.

The employer match is in a category by itself

Before anything else, contribute enough to your 401(k) to capture the full employer match. A 50% match on your first 6% of salary is an immediate 50% return on those dollars before a single market day passes. No other account, no investment strategy, and no tax break produces a guaranteed return like that.

The 401(k)'s tax treatment adds to the case. Traditional contributions reduce your taxable income in the year you make them, and growth compounds untouched until retirement, when withdrawals are taxed as ordinary income. Many plans also offer a Roth option, which reverses the timing: no deduction today, but tax-free withdrawals later. The 2026 employee contribution limit is $24,500, plus catch-up contributions for those 50 and older.

The match is the irreplaceable piece. Even if your 401(k) has mediocre fund options and high fees, capture the match before moving dollars anywhere else.

The account most investors underestimate

If you're enrolled in a high-deductible health plan, the Health Savings Account is arguably the most tax-efficient vehicle available. Most people use it as a debit card for copays. That's the wrong move.

What makes the HSA unusual is the combination: contributions are pre-tax, growth is tax-free, and withdrawals are tax-free for qualified medical expenses. No other account matches all three. After age 65, you can withdraw for any purpose; those withdrawals are taxed as ordinary income, which puts the HSA on par with a traditional IRA at that stage.

The strategic approach is to pay current medical costs out of pocket, invest the HSA balance, and let it compound. Nearly everyone will face significant healthcare costs in retirement; the HSA is the most efficient vehicle to pre-fund them. The 2026 contribution limits are $4,400 for self-only coverage and $8,750 for families.

Traditional or Roth: a tax timing bet, not a coin flip

Once you've captured the match and maxed the HSA, the next question is [link: Traditional IRA] or [link: Roth IRA]. The answer comes down to one comparison: your marginal tax rate now versus your expected rate in retirement.

Traditional contributions are pre-tax. You deduct them today, the money grows tax-deferred, and you pay ordinary income tax on withdrawals. Roth contributions are after-tax. No deduction now, but qualified withdrawals, including all earnings, are completely tax-free. Roth accounts also carry no required minimum distributions during your lifetime, which matters for estate planning.

The math favors Traditional when your current rate is meaningfully higher than what you expect to pay in retirement. It favors Roth when the reverse is true, or when you simply want the insurance of tax-free income regardless of future policy. Many investors split contributions between both. The 2026 contribution limit is $7,500, with an additional catch-up for those 50 and older. Direct Roth contributions phase out at higher income levels, though [link: backdoor Roth conversions] remain available.

The 529: powerful within its lane

The 529 plan matches the Roth IRA's federal tax treatment almost exactly: after-tax contributions, tax-free growth, and tax-free withdrawals for qualified expenses. The distinction is what qualifies. A 529 covers tuition, room and board, K-12 education costs, registered apprenticeship programs, and limited student loan repayment.

Where the 529 can pull ahead is at the state level. Many states offer a deduction or credit on 529 contributions that the Roth IRA does not provide. If your state is among them, that deduction meaningfully improves the effective return on education savings and can push the 529 above the Roth for dollars earmarked for college.

The penalty for using a 529 outside its intended purpose is real: non-qualified withdrawals trigger income tax plus a 10% penalty on earnings. Starting in 2024, unused 529 balances can be rolled over to a Roth IRA under certain conditions, which reduces the risk of over-funding a beneficiary who takes a different path.

The taxable brokerage: last in line, not out of the picture

Once contribution limits on tax-advantaged accounts are exhausted, the taxable brokerage receives everything else. It has no contribution limits, no withdrawal restrictions, and no penalties. The trade-off is efficiency: dividends and interest are taxed as earned, and gains are taxed when you sell, though long-term capital gains rates (0%, 15%, or 20% depending on income) are more favorable than ordinary income rates.

The hidden cost of the brokerage is compounding. In a tax-advantaged account, dollars that would have gone to taxes stay invested and keep growing. In a brokerage, they don't. Over 30 years, that drag is significant, which is precisely why the accounts above earn priority.

The order is the strategy

The sequencing that makes sense for most people: capture the full 401(k) match first, then max the HSA, then max an IRA (Traditional or Roth based on your tax situation), then return to fill the 401(k) to the annual limit, then direct remaining savings to a taxable brokerage.

Eligibility shapes execution throughout. The HSA requires a high-deductible health plan. IRA deductibility phases out at higher incomes. Your current bracket and retirement income projection should drive the Traditional versus Roth decision, and that projection is worth revisiting as your income changes. The accounts exist. The tax advantages are real. Whether you capture them depends almost entirely on where you direct your next contribution.