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 an Inheritance A windfall from a loved one can be both rewarding and complicated. Managing the Risk of Outliving Your Money Steps to help you sustain and grow your retirement savings. Helpful Retirement Strategies for Women Learn how to address the challenges that women face when planning for retirement.