Irs 401k Limits 2024 Catch Up Contributions. 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. With this in mind, participants who are.

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. Specifically, individuals who are at least 50 years old and earning.