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 Medicare Advantage 101 Overview of Medicare Advantage, what’s in them, special rules, and more. TIPS for Inflation If you are concerned about inflation and expect short-term interest rates may increase, TIPS could be worth considering. Impact of Taxes and Inflation Estimate the potential impact taxes and inflation can have on the purchasing power of an investment.