Self-Employed Retirement Plans Estimate the maximum contribution amount for a Self-Employed 401(k), SIMPLE IRA, or SEP. You are viewing this website at a small screen resolution which doesn't support calculators. Click here to view this calculator. Have A Question About This Topic? Name Email Address Message Thank you! Oops! Related Content 5 Benefits of Working in Retirement Here are 5 reason why you may consider working through retirement. Countering Counterfeit Currency Combating counterfeiting remains core to preserving the integrity of the nation’s money. How to Budget as a Couple Conversations about finances about budgeting can be a touchy subject, especially if you have different views about spending.