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 Why Medicare Should Be Part of Your Retirement Strategy How Medicare can address health care needs in your retirement strategy. Your Shifting Risk Tolerance Time and market performance may subtly and slowly imbalance your portfolio. A Living Trust Primer Living trusts are popular, but their appropriateness will depend upon your individual needs and objectives.