Irs 401k Limits 2025 Catch Up. Under a provision of secure act 2.0, plan participants in a specific age group can now boost their contributions to 401(k) and related plans. That's on top of the standard $23,500 limit for everyone.

In 2025, workers can contribute up to $23,500 to their 401 (k)s, up from $23,000 in 2024. The increase also applies to most 403 (b), 457 and federal trust.