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 Dreaming Up an Active Retirement When you retire, how will you treat your next chapter? Social Media: #NewestBusinessLiabilityRisk Social media may be a modern imperative for businesses looking to grow and build their brand, but it also introduces risk. What to Do When You Lose Your Wallet Ever lost your wallet? Frustrating. Here’s what you can do to keep yourself safe.