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 Why Everyone Needs an Estate Strategy Do you have an estate strategy? You should. Acres of Diamonds In life it often happens that the answers to our most pressing questions are right in our own backyards. How to Bake a Pie-R-A Roth IRAs are tax-advantaged differently from traditional IRAs. Do you know how?