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 Retirement Seen Through Your Eyes What's your vision of retirement? TIPS for Inflation If you are concerned about inflation and expect short-term interest rates may increase, TIPS could be worth considering. When Should You Take Social Security Monthly Social Security payments differ substantially depending on when you start receiving benefits.