2024 401k Contribution Limits Over 55. The solo 401k contribution limits for 2024 have seen a significant jump to $69,000 and $76,500 for those aged 50 or older. In 2025, the irs has forecasted an increase in the 401 (k) elective.
The numbers were largely unchanged. For 2024, the annual contribution limit for simple iras is $16,000, up from $15,500 in 2023.