Irs 401k Salary Limits 2025. The contribution limit for simple 401 (k)s is $16,000 (up to $19,500 if you're 50 or older). Starting in 2025, employees can contribute up to $23,000 into their 401(k), 403(b), most 457 plans or the thrift savings plan for federal employees, the irs announced nov.

That’s an increase from the 2023 limit of. The 401(k) contribution limit for 2025 is $23,000.