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 to Conquer the World - 5 Financial Strategies for Savvy Learn more about women taking control of their finances with this infographic. Budget Check Up: Tax Time Is the Right Time Tax preparation may be the perfect time to give the household budget a check-up. How to Make the Tax Code Work for You When you take the time to learn more about how it works, you may be able to put the tax code to work for you.