Retirement Contributions That Reduce Your Tax Bill in 2026

Contributing to tax-advantaged retirement accounts is one of the most straightforward ways to reduce your tax liability. Unlike deductions that require specific circumstances to qualify, anyone with earned income can contribute to a retirement account and get an immediate tax benefit.

How Retirement Contributions Reduce Taxes

Pre-tax contributions (Traditional 401(k), Traditional IRA, SEP-IRA) reduce your taxable income dollar-for-dollar in the year you contribute. A $10,000 contribution in the 22% bracket saves $2,200 in federal income tax.

After-tax contributions (Roth accounts) do not reduce current-year taxes but allow tax-free growth and withdrawals in retirement.

For most working-age taxpayers who expect their income to be similar or lower in retirement, pre-tax contributions offer the better near-term tax benefit.

2025 Contribution Limits

Account	Under 50	50 and Older
401(k) / 403(b)	$23,500	$31,000
Traditional or Roth IRA	$7,000	$8,000
SIMPLE IRA	$16,500	$20,000
SEP-IRA	Up to $69,000	Up to $69,000
Solo 401(k)	Up to $69,000	Up to $76,500

401(k): The Most Accessible Option

If your employer offers a 401(k), traditional contributions reduce your W-2 income before taxes. At minimum, contribute enough to capture any employer match — that is an immediate 50-100% return on your contribution.

Many plans allow contributions up to the $23,500 limit. Increasing your contribution rate by even 1-2% of salary can meaningfully reduce your annual tax bill.

Traditional IRA: Available to Everyone with Earned Income

Anyone under age 73 with earned income can contribute to a Traditional IRA and claim a tax deduction, subject to income limits if you (or your spouse) are covered by a workplace plan:

2025 deduction phaseout (covered by workplace plan):

Single: $79,000 – $89,000 MAGI
Married filing jointly: $126,000 – $146,000 MAGI
Married filing separately (covered): $0 – $10,000

If neither you nor your spouse participates in a workplace plan, the contribution is fully deductible regardless of income.

IRA contributions for 2025 can be made until April 15, 2026 — making this the most immediate action you can take at tax time.

SEP-IRA: The Self-Employed Power Move

Self-employed individuals can contribute up to 25% of net self-employment income (after the SE tax deduction), up to $69,000. For a self-employed person earning $100,000, that is up to a $18,587 deduction.

Contributions can be made until the tax filing deadline including extensions (October 15 for those who filed extensions). This gives business owners the ability to see their full year income before deciding the optimal contribution amount.

Solo 401(k): Even Higher Limits for the Self-Employed

A Solo 401(k) allows contributions as both employee (up to $23,500) and employer (up to 25% of compensation). Combined, the limit reaches $69,000 — or $76,500 with catch-up contributions for those 50+.

The Solo 401(k) must be established by December 31 of the tax year, but contributions can be made until the filing deadline.

Health Savings Account: The Triple Tax Benefit

While technically a healthcare account, an HSA provides three tax benefits: contributions are deductible, growth is tax-free, and withdrawals for qualified medical expenses are tax-free. After age 65, withdrawals for any purpose are taxed as ordinary income — making the HSA function like a Traditional IRA for non-medical expenses.

The 2025 contribution limits are $4,150 (self-only) and $8,300 (family). You must have a qualifying high-deductible health plan to contribute.

Saver's Credit

Lower-income taxpayers (up to $76,500 AGI for married filing jointly in 2025) who contribute to retirement accounts may qualify for the Saver's Credit — a non-refundable credit worth 10%, 20%, or 50% of up to $2,000 in contributions (or $4,000 for married filers). This is in addition to the deduction, effectively doubling the tax benefit for qualifying taxpayers.