Direct answer: The priority stack at 25-29: (1) 401(k) employer match, (2) HSA to maximum ($4,300 self-only in 2026), (3) Roth IRA to $7,000, (4) 401(k) to $23,500 maximum, then (5) taxable brokerage. If Roth IRA income limits apply, use a backdoor Roth conversion.
Account Map: The Full Priority Stack at Ages 25-29
Key Takeaways
- The priority stack has five steps: 401(k) match, HSA, Roth IRA, 401(k) maximum, then taxable brokerage.
- The HSA is the only triple-tax-advantaged account: contributions are pre-tax, growth is tax-free, and qualified withdrawals are tax-free.
- In 2026, Roth IRA eligibility phases out for single filers between $150,000 and $165,000, and for married filers between $236,000 and $246,000.
- The backdoor Roth IRA allows high-income earners above the phase-out threshold to access Roth tax treatment via a two-step conversion.
- A taxable brokerage account has no contribution limits and no restrictions on withdrawals, making it the right home for money between tax-advantaged limits and your total savings capacity.
The Full Account Priority Stack Explained
At 25-29, you have access to the complete set of tax-advantaged accounts available to employed individuals in the U.S. Navigating them in the right order matters because each tier offers different tax benefits, and exceeding one while underfunding another leaves tax efficiency on the table.
Step 1 is the 401(k) employer match. Whatever percentage of salary you must contribute to receive the maximum match, contribute at least that amount. The match vesting schedule affects when the matched funds are yours to keep, but the match itself is free capital.
Step 2 is the Health Savings Account, or HSA, available only to individuals enrolled in a High Deductible Health Plan. The 2026 contribution limit is $4,300 for self-only coverage and $8,550 for family coverage. HSA contributions are pre-tax, grow tax-free, and are tax-free when used for qualified medical expenses. After age 65, unused funds can be withdrawn for any purpose subject to ordinary income tax, making the HSA function like a traditional IRA with the option of tax-free medical use at any age.
Step 3 is the Roth IRA, capped at $7,000 in 2026 for those under 50. Roth IRA contributions are made with after-tax dollars, but all growth and qualified withdrawals are tax-free. The income phase-out for single filers begins at $150,000 and ends at $165,000 in 2026. Married filing jointly phase-out is $236,000 to $246,000.
Step 4 is the 401(k) beyond the match, up to the $23,500 annual limit in 2026. Even after the match, pre-tax 401(k) contributions reduce current taxable income and grow tax-deferred.
Step 5 is the taxable brokerage account, which has no annual contribution limits, no income restrictions, and full liquidity. Long-term capital gains rates apply to assets held more than one year.
The HSA as the Hidden Priority
Many investors in their late 20s overlook the HSA because they associate it only with medical expenses. In practice, the HSA is arguably the most tax-efficient account available to anyone who qualifies. No other account offers pre-tax contributions, tax-free growth, and tax-free withdrawals for a specific category of spending.
The strategy at 25-29: contribute to the HSA maximum, pay current medical expenses out of pocket where possible, and allow the HSA balance to grow. Keep receipts for qualified medical expenses paid out of pocket. The IRS does not impose a time limit on HSA reimbursements, so expenses paid at 27 can be reimbursed tax-free at 57 from a much larger HSA balance. This strategy turns the HSA into a long-term investment vehicle rather than a medical spending account.
If your employer offers an HSA with a matching contribution (some do), that further increases the effective return on HSA contributions.
Roth IRA Income Limits and the Backdoor Roth
At 25-29, rising income means Roth IRA eligibility may be limited or eliminated for some earners. The 2026 phase-out for single filers begins at $150,000 of modified adjusted gross income and ends at $165,000. Above $165,000, single filers cannot contribute directly to a Roth IRA.
The backdoor Roth IRA is the legal workaround: contribute to a traditional IRA (which has no income limit for contributions, only for deductibility), then convert that traditional IRA to a Roth IRA. The conversion is a taxable event to the extent the traditional IRA contained pre-tax money. If you have no other traditional IRA balance, this process is straightforward and the tax on a non-deductible contribution converted immediately is typically zero or minimal.
If you have existing pre-tax traditional IRA balances, the pro-rata rule applies and the conversion becomes more complex. Consult a tax professional before executing the backdoor Roth if you have other traditional IRA assets.
Frequently Asked Questions
What is the correct order to fund investment accounts at 27?
The standard priority at 27 is: first, contribute enough to your 401(k) to capture the full employer match; second, maximize your HSA if you have an HDHP ($4,300 self-only in 2026); third, contribute to your Roth IRA up to $7,000 (if eligible based on income); fourth, return to the 401(k) and contribute up to the $23,500 annual limit; fifth, open and fund a taxable brokerage account with any remaining investable cash. This sequence optimizes for tax efficiency first, then adds the flexibility of taxable accounts. If you are above the Roth IRA income phase-out ($150,000 single, $236,000 married in 2026), substitute the backdoor Roth conversion for the direct Roth IRA contribution in step three.
When should I open a taxable brokerage account?
Open a taxable brokerage account when you have maximized your available tax-advantaged accounts and have additional investable cash, or when you need liquidity that retirement accounts cannot provide. Roth IRA contributions (not earnings) can be withdrawn without penalty at any time, but 401(k) and traditional IRA funds are restricted until 59.5 without penalty in most cases. If you are saving for a goal in 5-10 years (buying a home, career change, sabbatical), a taxable brokerage account with a conservative-to-moderate allocation is the right home for that money. There are no contribution limits, no income restrictions, and no withdrawal constraints.
What is a backdoor Roth IRA and when do I need one?
The backdoor Roth IRA is a two-step process: you make a non-deductible contribution to a traditional IRA (there are no income limits for IRA contributions, only for deductibility), then convert that traditional IRA to a Roth IRA. You need a backdoor Roth when your modified adjusted gross income exceeds $165,000 as a single filer or $246,000 as a married filer in 2026, which are the upper ends of the Roth IRA direct-contribution phase-out range. The pro-rata rule complicates the conversion if you have other pre-tax traditional IRA balances: the taxable portion of the conversion is calculated across all your traditional IRA assets, not just the non-deductible contribution. If you have pre-existing traditional IRA balances, consult a tax professional before executing the conversion.