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 Putting a Price Tag On Your Health Being healthy not only makes you feel good, it may also help you financially. Behavioral Finance An amusing and whimsical look at behavioral finance best practices for investors. Three Key Questions to Answer Before Taking Social Security When to start? Should I continue to work? How can I maximize my benefit?