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 Contributing to an IRA? Determine if you are eligible to contribute to a traditional or Roth IRA. The Five Basics of Financial Literacy How literate are you when it comes to your finances? Brush up with these five basics. Financial Aid for Students 101 Help your college-bound child explore scholarships, grants, and more with this article on paying for higher education.