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 Risk Tolerance: What’s Your Style? Learn about what risk tolerance really means in this helpful and insightful video. When Should You Take Social Security Monthly Social Security payments differ substantially depending on when you start receiving benefits. Bursting the Bubble Tulips were the first, but they won’t be the last. What forms a “bubble” and what causes them to burst?