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 A Bucket Plan to Go with Your Bucket List Longer, healthier living can put greater stress on retirement assets; the bucket approach may be one answer. Leaving Your Lasting Legacy Want to do more with your wealth? You might want to consider creating a charitable foundation. The Fed and How It Got That Way Here is a quick history of the Federal Reserve and an overview of what it does.