After Tax Contribution solo 401(k)
If my 100% S Corp W-2 wages are $60,000, can I contribute $60,000 after tax contribution to my solo 401(k) while my “employer S Corp” contributes another $10,000 to reach the $70,000…..or must I have enough W-2 wages to cover both the employee and employer contribution?
Permalink Submitted by Alan - IRA critic on Thu, 2025-06-12 17:56
If your plan provider supports non Roth after tax contributions, you can contribute only the 60,000 shown in Box 1 of your W-2. If the plan allows employer matching on after tax contributions, you could add up to another 10,000 of employer contributions.