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 The Business Cycle How will you weather the ups and downs of the business cycle? What Is My Risk Tolerance? This questionnaire will help determine your tolerance for investment risk. Managing Money as a Couple Keys to preparing to grow wealthy together.