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 Stop Wasting Money One way to find money is to examine your current spending habits and eliminate money wasters. Why Everyone Needs an Estate Strategy Do you have an estate strategy? You should. Leaving Your Lasting Legacy Want to do more with your wealth? You might want to consider creating a charitable foundation.