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 The Sequence of Returns A look at how variable rates of return impact investors over time. Consider Keeping Your Life Insurance When You Retire Reasons to retain your coverage into your retirement years. Tuning Your Social Security Benefit When should you take your Social Security benefit?