401k Max 2024 Contributions Over 55. Workplace retirement plan contribution limits for 2024. Total contributions to a solo 401 (k) cannot exceed $69,000 or $76,500 for those at least aged 50.

The contribution limit for simple 401 (k)s is $16,000 (up to $19,500 if you’re 50 or older). The 401 (k) contribution limit is $23,000 in 2024.