Contribution room in tax-advantaged accounts is a finite, non-renewable resource. Each year's unused space is gone forever. This guide covers strategies to fully utilize every available dollar of tax-advantaged contribution space.
| Account | Under 50 | 50+ | 60–63 |
|---|---|---|---|
| 401(k) / 403(b) employee | $23,500 | $31,000 | $34,750 |
| IRA (Traditional or Roth) | $7,000 | $8,000 | $8,000 |
| HSA (Individual) | $4,300 | $5,300 | $5,300 |
| HSA (Family) | $8,550 | $9,550 | $9,550 |
| 401(k) total (employee + employer) | $70,000 | $77,500 | $81,250 |
SECURE 2.0 introduced a "super catch-up" for ages 60–63 starting in 2025, providing an additional $11,250 in 401(k)/403(b) catch-up contributions (up from $7,500 for the standard 50+ catch-up).
When you cannot maximize every account, prioritize in this order:
Always contribute at least enough to your 401(k) to capture the full employer match. A typical 50% match on 6% of salary is an immediate 50% return on your money—no investment can reliably beat that.
If eligible, maximize your HSA next. The Health Savings Account is the only account with triple tax benefits: deductible contributions, tax-free growth, and tax-free medical withdrawals. It also functions as a supplemental retirement account after age 65.
If your income is below the phase-out thresholds ($150,000–$165,000 single; $236,000–$246,000 married filing jointly for 2025), contribute directly to a Roth IRA. If above, use the Backdoor Roth IRA strategy (see below).
Increase your 401(k) contributions to the employee maximum ($23,500 in 2025). Whether to use Traditional or Roth 401(k) depends on your current vs. expected future tax rate.
If your 401(k) plan allows after-tax contributions and in-service distributions or in-plan Roth conversions, you can contribute up to the total 401(k) limit ($70,000 in 2025) minus employee and employer contributions, then convert to Roth.
After exhausting all tax-advantaged space, invest in a taxable brokerage account. While not tax-advantaged, tax-efficient index funds in taxable accounts can still be highly effective, especially when held long-term for preferential capital gains rates.
For high earners above the Roth IRA income limits:
Critical caveat: The pro-rata rule applies. If you have existing pre-tax IRA balances (Traditional, SEP, or SIMPLE IRAs), the conversion will be partially taxable based on the ratio of pre-tax to after-tax balances across all your IRAs. To avoid this, roll pre-tax IRA balances into your 401(k) before executing the backdoor Roth.
This strategy allows contributing an additional $35,000+ to Roth accounts beyond normal limits:
Not all 401(k) plans support this. Check whether your plan allows:
If your plan supports both, this is one of the most powerful wealth-building strategies available to high earners.
If one spouse does not work or earns very little, the working spouse can fund a Spousal IRA for them, up to the normal IRA limit ($7,000 in 2025). The couple must file jointly, and the working spouse must have earned income at least equal to the total IRA contributions for both spouses.
Self-employed individuals and small business owners have additional options:
The most effective strategy is automation:
Each January, review:
For more on account types, see Types of Investment Accounts Tutorial. For tax optimization, see Tax Benefits of Retirement Accounts.