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 TIPS for Inflation If you are concerned about inflation and expect short-term interest rates may increase, TIPS could be worth considering. Deciding When to Take Social Security One of the most common questions people ask about Social Security is when they should start taking benefits. 5 Benefits of Working in Retirement Here are 5 reason why you may consider working through retirement.