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 Pullbacks, Corrections, and Bear Markets When the market experiences volatility, it may be a good time to review these common terms. How Income Taxes Work A quick look at how federal income taxes work. The Basics of Medicare Learn all about Medicare basics in this informative and insightful article.