Updated October 9, 2026. Quick answer. The 2027 401(k) elective-deferral limit is not officially announced yet — the IRS typically publishes it in late October or November. The confirmed 2026 limit is $24,500 per IRS Notice 2025-67, with an additional $11,250 super catch-up for savers turning 60 to 63 during the year, a provision unique to that four-year age band.
More on the 2027 retirement figures: the key employee limit for 2027, the Saver’s Match for 2027 and the Roth catch-up rule for 2027.
Form 1040 for 2025, read line by line: Form 1040 line 1a, Form 1040 lines 1h and 1i and Form 1040 line 5a and 5b.
The employee copy of Form W-2, read box by box: W-2 boxes 10 to 20, W-2 box 10 and W-2 box 14.
The employee copy of Form W-2, read box by box: W-2 boxes 1 to 8, W-2 box 1 and W-2 boxes 1, 3 and 5.
More IRS forms and schedules, read line by line: Form 5330 instructions.
The 2026 limits that apply to this year’s contributions: the 2026 401(k) contribution limits, the 2026 401(k) catch-up limits and the 2026 403(b) limits.
The other side of the account, taking money out: the 401(k) withdrawal rules.
The standard limit and the age-50 catch-up
The elective-deferral limit applies to your own contributions to a 401(k), 403(b), or most 457(b) plans. Workers age 50 and older by year-end can add a standard catch-up on top — both figures move on the IRS’s annual inflation-adjustment cycle.
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How our partner relationships workThe 60-63 super catch-up: the one most people miss
Since 2025, a SECURE 2.0 provision gives workers who turn 60, 61, 62, or 63 during the plan year a larger catch-up contribution than the standard age-50 catch-up — projected at $11,750 for 2027. This applies only during that specific four-year window; the year you turn 64, you drop back to the standard age-50 catch-up amount — and the amount itself is set from a frozen 2024 base year rather than from the current catch-up, which is why it moves on its own schedule. It’s easy to miss because most retirement-savings coverage still describes a single “50+” catch-up figure.
The mandatory Roth catch-up for higher earners
Also since 2026: if your prior-year FICA wages from your employer exceeded $150,000 (the $145,000 written into the statute, indexed annually), your catch-up contributions must go into a Roth account, not pre-tax, regardless of which you’d normally choose — a swap that costs you the deduction at your top bracket rate this year, and the requirement is already in force rather than starting in 2027. This applies at the employer/wage level, not household income — it’s a payroll-driven rule, and plans that don’t yet support Roth catch-up contributions may simply block catch-up contributions entirely for affected employees until they add it.
Sources
The 2026 figures and the 2009 through 2026 history rows on this page were checked against the IRS cost-of-living notices for each year, including Notice 2025-67, on September 29, 2026.
2026 confirmed limits: IRS. 2027 projection: Milliman, 2027 IRS limits forecast, updated August 13, 2026 and read at milliman.com on August 24, 2026 — the firm’s own forecast, not an official IRS figure. Milliman reissues it monthly and has revised it once: the March forecast (published April 13, 2026) projected $25,000, and every forecast since (April, May, June, July) projects $25,500. That August 13 update is built on ten months of actual CPI through July 31, 2026 with two months forecast to September 30. SECURE 2.0 catch-up provisions: Pub. L. 117-328.
Every projected figure above is attributed to the organization that published it and is explicitly not yet announced by the government body that sets it. This page will be updated with the official figure the day it is announced, and the projection will be struck through rather than deleted, so the record of what was projected vs. what actually happened stays visible. See the full current-numbers register for every figure this site tracks, dated and sourced. General information, not tax or legal advice.
The 2027 deferral and catch-up limits wait on the IRS cost-of-living notice. What can already be computed for your 2027 sets out which retirement figures are settled today and which are still being measured.
A limit is what you may add; it is not what people have. The retirement savings percentile calculator puts a balance against the actual distribution for its age cohort — where the median family aged 55–64 holds $16,600, not the six-figure average the headlines quote.
Fifteen more 2027 figures, each with the 2026 amount, the statute, and an honest read of whether anyone has projected 2027 yet: Gift Tax Annual Exclusion 2027, IRA Contribution Limit 2027, SIMPLE IRA Contribution Limit 2027, SEP IRA Contribution Limit 2027, Social Security Wage Base 2027, Social Security Earnings Test Limits 2027, QCD Limit 2027, FSA Contribution Limit 2027, Long-Term Capital Gains Brackets 2027, AMT Exemption 2027, Saver’s Credit 2027, Medicare Part A Deductible 2027, Kiddie Tax Thresholds 2027, Foreign Earned Income Exclusion 2027 and ABLE Account Contribution Limit 2027.
The same annual IRS notice also sets the plan-specific limits: the 401(k) catch-up and super catch-up, the 403(b) limit, the 457(b) limit, the TSP limit, the solo 401(k) limit, the HCE compensation limit.
The same IRC §415 family also caps the pension side: the defined benefit plan’s own 415(b) annual benefit limit.
How your 401(k) contributions appear on a W-2: code D for pre-tax deferrals, code AA for Roth.
For every figure this program tracks, see the 2027 numbers hub.