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! Test Your Investment Knowledge! How much do you know about investing? Take our quiz and find out instantly. First Name Last Name Email Address Thank you! Oops! Related Content Your Changing Definition of Risk in Retirement A change in your mindset during retirement may drive changes to your portfolio. Earnings for All Seasons Earnings season can move markets. What is it and why is it important? What You Should Do About Insurance Following a Divorce In the face of divorce, making changes to insurance coverage may be overlooked.