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 Question Thank you! Oops! Related Content Fallen Tree Damage—Who Pays? Your liability for damages that occur when a tree on your property falls on your neighbor’s property is not clear cut. Exit Strategies of the Rich and Famous Estate conservation is too important to put off. Do you have a smart exit strategy? Estimate Your RMD Help determine the required minimum distribution from an IRA or other qualified retirement plan.