Irs 401k Limits 2024 And Employer Matching. Employers must make a matching contribution of a maximum of 3% of a worker's salary or a nonelective contribution worth 2% of each participating employee's. The irs sets various limits for retirement plans, including 401 (k)s.

However, you and your employer may not. 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.