401(k) Contribution Limits 2026 — Max Out & Save Thousands in Taxes
February 1, 2026 · 4 min read
Contributing to your 401(k) is the most powerful tax move available to most W-2 employees. Every dollar you contribute reduces your taxable income dollar-for-dollar — meaning you pay less in federal tax, state tax, and sometimes even FICA.
2026 401(k) Contribution Limits
Tax Savings by Contribution Amount
How much federal income tax you save by contributing to a traditional 401(k), at three income levels (single filer, 2026 brackets):
| Contribution | $50k Income | $75k Income | $100k Income |
|---|---|---|---|
| $3,000 | -$660 | -$720 | -$792 |
| $6,000 | -$1,320 | -$1,440 | -$1,584 |
| $10,000 | -$2,200 | -$2,400 | -$2,640 |
| $15,000 | -$3,300 | -$3,600 | -$3,960 |
| $23,500 (max) | -$5,170 | -$5,640 | -$6,204 |
Traditional vs. Roth 401(k)
Traditional 401(k): Contributions are pre-tax. You pay taxes when you withdraw in retirement. Best if you expect to be in a lower tax bracket in retirement.
Roth 401(k): Contributions are post-tax. Withdrawals in retirement are 100% tax-free. Best if you expect to be in a higher bracket later, or if you want tax-free growth.
Many plans allow you to split contributions between traditional and Roth, up to the combined $23,500 limit.
Employer Match — Free Money
Most employers match a percentage of your contributions — commonly 50% or 100% of the first 3–6% of your salary. This is free money that does not count toward your $23,500 limit. Always contribute at least enough to get the full employer match before doing anything else with your money.
Example: $80,000 salary, employer matches 100% of first 4% ($3,200). If you contribute at least $3,200, you get $3,200 in free employer contributions = 100% instant return.
Pro Tip: Stack 401(k) + HSA
Max out both your 401(k) ($23,500) and HSA ($4,300) for a total of $27,800 in pre-tax deductions. On a $100,000 salary, this alone saves you approximately $6,000–$8,000 per year in federal taxes depending on your bracket. Enter both in our calculator to see your exact savings.
See Your Take-Home With Max 401(k)
Enter your salary + $23,500 contribution to see exactly how much more you keep.
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