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 Surprises Making the most of surprises is a great reason to work with us. How Compound Interest Works Use this calculator to better see the potential impact of compound interest on an asset. Who Is Your Trusted Contact? This investment account question is vital and answered as early as possible.