Free Tool · 2026 IRS Limits
401(k) Contribution & Growth Calculator
See how your 401(k) contributions reduce your tax bill today and grow over time — with employer match and compounding.
Quick Answer: Maxing out a 401(k) at $23,500 in 2026 saves a 22%-bracket earner approximately $5,170 in federal income tax. With a 5% employer match on a $100K salary, the total annual contribution reaches $28,500 before investment growth.
Your 401(k) Details
2026 401(k) IRS Limits
| Limit Type | 2026 Amount |
|---|---|
| Employee elective deferral | $23,500 |
| Catch-up contribution (age 50+) | $31,000 total |
| Total limit incl. employer (§415(c)) | $70,000 |
| SIMPLE IRA limit | $16,500 |
Source: IRS Notice 2024-80 (projected 2026 limits).
Frequently Asked Questions
How much should I contribute to my 401(k) in 2026?
Financial planners generally recommend contributing at least enough to get your full employer match — that’s an instant 50–100% return on your money. If possible, aim to max out at $23,500. If you’re 50 or older, you can contribute up to $31,000 total.
What’s the difference between a traditional 401(k) and a Roth 401(k)?
Traditional 401(k) contributions are pre-tax — they reduce your taxable income now but withdrawals in retirement are taxed. Roth 401(k) contributions are after-tax — no tax break now, but qualified withdrawals in retirement are completely tax-free. If you expect to be in a higher tax bracket in retirement, a Roth 401(k) may be better.
What is a 401(k) employer match and how does it work?
An employer match is free money your employer adds to your 401(k) based on your own contributions. A common match is 100% of contributions up to 5% of salary — meaning if you earn $100K and contribute 5% ($5,000), your employer adds another $5,000, giving you $10,000 total annually.
📋 Disclaimer: Educational tool only. Projections assume constant annual return. Actual results vary. Consult a financial advisor for personalized retirement planning. Source: IRS Notice 2024-80.