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 Business Cycle How will you weather the ups and downs of the business cycle? Insurance Needs Assessment: For Empty Nesters and Retirees Do your insurance needs stay the same when the nest empties? Working With A Financial Professional A financial professional is an invaluable resource to help you untangle the complexities of whatever life throws at you.