2024 401k Limits Irs. 401 (k) pretax limit increases to $23,000. For the year 2024, the irs has set the deferral limit for employees participating in a simple 401(k) plan at $16,000.
This amount is up modestly from 2023, when the individual. Employees can invest more money into 401(k) plans in 2024, with contribution limits increasing from 2023’s $22,500 to $23,000 for 2024.