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 Inflation and the Real Rate of Return Learn about the role of inflation when considering your portfolio’s rate of return with this helpful article. SECURE Act 2.0: An Overview The second iteration of the SECURE Act brings forward several changes to the world of retirement. What Is My Risk Tolerance? This questionnaire will help determine your tolerance for investment risk.