401k 2024 Max Limits. A key difference between an ira and a 401 (k) account is this: For 2024, employees can defer up to $23,000 into 401 (k) plans, up from $22,500 in 2023, with an extra $7,500 for workers age 50 and older.

Workers who contribute to a 401 (k), 403 (b), most 457 plans and the federal. 401 (k) contribution limits for 2024.