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 Annuity Comparison This calculator compares a hypothetical fixed annuity with an account where the interest is taxed each year. Money that Buys Good Health is Never Ill Spent It's important to make sure your retirement strategy anticipates health-care expenses. Don’t Be Your Own Worst Enemy Emotional biases can adversely impact financial decision making. Here’s a few to be mindful of.