401k 2024 Limit Contribution. The 2024 contribution limit for 401(k) plans is $23,000, up from $22,500 in 2023. In 2024, those amounts are $7,000 and $8,000, respectively.
Total contributions to a solo 401 (k) cannot exceed $69,000 or $76,500 for those at least aged 50. The basic employee contribution limit for 2024 is $23,000 ($22,500 for 2023).