401k Limit 2024 50 Percent Increase. The contribution limit for a designated roth 401(k) increased $500 to $23,000 for 2024. The total employee contribution limit to all 401(k) and 403(b) plans for those under 50 will be going up from $23,000 in 2024 to $23,500 in 2025.

That limit also applies to 457, 403(b) and the federal government’s thrift savings. The total employee contribution limit to all 401(k) and 403(b) plans for those under 50 will be going up from $23,000 in 2024 to $23,500 in 2025.