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 Charitable Giving: Smart from the Heart Do you have causes that you want to support with donations? The Other Sure Thing Though we don't like to think about it, all of us will make an exit sometime. Are you prepared? Replacing Your Medicare Card Learn how to replace your lost, stolen, or damaged Medicare card in this helpful article.