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 Preparation is the Key to Retirement The simplest ideas can sometimes make a massive difference over time. Enjoy this brief video to learn more. A Penny Saved is Two Pennies Earned Here are some simple and inexpensive energy-saving tips that may help you save money. The Financial Literacy Crisis Many Americans are operating their personal finances with only the barest minimum of knowledge.