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 Question Thank you! Oops! Related Content Retirement Is a Beginning Key questions to answer when you are considering retirement. Retirement Traps to Avoid Beware of these traps that could upend your retirement. How Financial Professionals Are Compensated Read this overview to learn how financial advisors are compensated.