2024 401k Maximum Compensation. Workers who contribute to a 401(k), 403(b), most 457 plans and the federal government's thrift savings plan can contribute up to $23,000 in 2024, a $500 increase. If you’re 50 or older, you can stash an additional $7,500 in your 401(k).

Deferred compensation limits for all employees under. Those 50 and older can contribute an additional $7,500.