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 Financial Aid for Students 101 Help your college-bound child explore scholarships, grants, and more with this article on paying for higher education. Interested in a Fuel Efficient Car? Estimate how many months it may take to recover the out-of-pocket costs when buying a more efficient vehicle. Medicare Advantage 101 Overview of Medicare Advantage, what’s in them, special rules, and more.