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 Managing Money as a Couple Keys to preparing to grow wealthy together. Conquering Retirement Challenges for Women Looking ahead can help you conquer these unique obstacles. The Junk Drawer Approach to Investing It's easy to let investments accumulate like old receipts in a junk drawer.