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 How Women Can Prepare For Retirement Are women prepared for a 20-year retirement? Critical Estate Documents Sound estate management includes creating financial and healthcare documents. Here's an inside look. Preparing for the Expected You can plan ahead to protect yourself and your family against the financial consequences of deteriorating health.