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 Getting a Head Start on College Savings A few strategies that may help you prepare for the cost of higher education. A Meal for All Generations When it comes to generational differences, knowing the facts can be difficult. Three Key Questions to Answer Before Taking Social Security When to start? Should I continue to work? How can I maximize my benefit?