Your birth date decides how much you can legally put into a 401(k). Enter your date of birth to find your 2026 elective deferral limit, any catch-up you qualify for, and how your balance could grow by 65.
Age is measured on December 31, 2026 — the rule the IRS actually uses
The IRS does not give everyone the same 401(k) ceiling. Congress built in an age-based top-up called the catch-up contribution so that workers in their final decade of saving can put away more than someone just starting out. In 2025 a further wrinkle was added: savers aged 60 through 63 get an even larger “super catch-up”, worth 150% of the standard catch-up amount.
This is why two colleagues on identical salaries can legally defer very different amounts. A 48-year-old is capped at $23,500 of elective deferrals in 2026, while a 61-year-old can defer up to $34,750 — nearly 48% more. Because the tier is fixed on December 31, someone who turns 50 in early January gets the catch-up for the whole year, while a December 31 birthday gets the very same benefit.
These are the employee elective deferral limits announced by the IRS. Amounts are per person across all employers combined, not per plan.
| Age at Dec 31, 2026 | Base Limit | Catch-Up | Total You Can Defer |
|---|---|---|---|
| Under 50 | $23,500 | $0 | $23,500 |
| 50 – 59 | $23,500 | $7,500 | $31,000 |
| 60 – 63 | $23,500 | $11,250 | $34,750 |
| 64 – 71 | $23,500 | $7,500 | $31,000 |
| 72 – 73 | $23,500 | $7,500 | $31,000 |
| 74 and older | $23,500 | $0 | $23,500 |
All figures are employee elective deferrals only. They exclude employer match and profit-sharing, which sit under a separate overall annual additions cap of $72,000 in 2026 (plus catch-up). Roth 401(k) contributions count toward the same limit as pre-tax dollars.
Contribution limits are not the same as savings targets. Fidelity’s widely used guideline suggests a multiple of salary at each milestone age. Compare your balance against the two common benchmarks below — the 1× by 30 rule and Fidelity’s own more conservative path.
| Age | Aggressive Benchmark (1× by 30) | Fidelity Guideline |
|---|---|---|
| 25 | 0.6× | 0.3× |
| 30 | 1.0× | 0.5× |
| 35 | 2.0× | 1.0× |
| 40 | 3.0× | 1.2× |
| 45 | 4.0× | 2.0× |
| 50 | 6.0× | 3.0× |
| 55 | 7.0× | 4.5× |
| 60 | 8.0× | 6.0× |
| 65 | 10.0× | 7.0× |
Multiples apply to your current gross salary. If you are behind the guideline, the age-based catch-up is the most direct lever you have, since it raises your legal ceiling without changing your income.
How is my age determined for 401(k) catch-up purposes?
The IRS uses your age on December 31 of the tax year, not your age on the day you contribute. If you turn 50 at any point during 2026 — even on December 31 — you may use the full catch-up amount for that entire year.
What is the 60-to-63 super catch-up and do I qualify?
The SECURE 2.0 Act created a larger catch-up of $11,250 for savers aged 60, 61, 62, or 63 by December 31. It is 150% of the standard $7,500 catch-up. The benefit lasts only four years, so at 64 the catch-up drops back to the normal amount.
Does the limit apply to each 401(k) I have?
No. The elective deferral limit is per individual across all 401(k), 403(b), and 457 plans you contribute to in a year. If you change jobs mid-year, you must add up contributions from both plans and stop deferring once you hit the combined cap.
Can I still contribute catch-up amounts after retiring?
Only if you still have earned compensation from an employer plan. Once you fully retire and have no wage income, you cannot make new elective deferrals. Catch-up eligibility also requires the normal plan participation, so check with your plan administrator.
Is the projection at 65 guaranteed?
No. The projection simply grows your current balance and annual contribution at an assumed 6% annual return. Real results vary with market performance, fees, contribution changes, and the age you actually stop working. Treat it as a planning illustration, not a promise.