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 Dreaming Up an Active Retirement When you retire, how will you treat your next chapter? Spotting Credit Trouble The wise use of credit is a critical skill. These 10 questions will help you assess your skill level. Pullbacks, Corrections, and Bear Markets When the market experiences volatility, it may be a good time to review these common terms.