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 Questions That Have Nothing to Do With Money Things to consider before retirement. Facilitate Family Financial Conversations Across Generations Start a discussion with your adult kids about generational family finances. Share your retirement and financial goals. A Brief Guide To Condo Insurance Important items to consider when purchasing condo insurance.