2025 Roth 401k Contribution Limits Over 50. In 2025, you can defer up to $23,500 from your salary, with a total maximum contribution from all sources reaching. 401k contribution limits have changed for this year.
The 2025 catch‑up contribution limit for individuals aged 50 and over will stay at $1,000, the same rate from 2024. For 2025, the contribution limit to 401(k) plans has increased to $23,500.