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 A Bucket Plan to Go with Your Bucket List Longer, healthier living can put greater stress on retirement assets; the bucket approach may be one answer. 9 Facts About Social Security There are things about Social Security that might surprise you. Encore Careers: Push Your Boundaries Ready for retirement? Find out why many are considering encore careers and push your boundaries into something more, here.