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 Question Thank you! Oops! Related Content The Basics of Medicare Learn all about Medicare basics in this informative and insightful article. Getting a Head Start on College Savings A few strategies that may help you prepare for the cost of higher education. Managing the Risk of Outliving Your Money Steps to help you sustain and grow your retirement savings.