Irs 401k Catch Up Contribution Limits 2024. For anyone 50 or older, you will be allowed to put away. Starting in 2024, 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.

If you’re age 50 or older, you’re. All new limits will go into effect jan.