2025 Maximum 401k Contribution Limits Over 50. Contribution limits for 401 (k), 403 (b), most 457 plans, and the federal government's thrift savings plan will increase by $500 for 2025. 401(k) contribution limits in 2024 and 2025.

For workers aged 50 and above,. The 401k contribution limits for the year 2025 are expected to see many increases in different plans including elective deferral limit to $24,000, defined contribution plan to.