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 Cost of Procrastination Don't let procrastination keep you from pursuing your financial dreams and goals. What Can a Million Dollars Buy You? $1 million in a diversified portfolio could help finance part of your retirement. Finding the Balance The sandwich generation faces unique challenges. For many, meeting needs is a matter of finding a balance.