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 Question Thank you! Oops! Related Content Pickleball in Retirement Learn about the latest sport to sweep the nation with this informative article. Understanding the SECURE Act 2.0 A timeline covering a few of the major provisions of the SECURE Act 2.0. Retirement Income and the Traditional Portfolio Experiencing negative returns early in retirement can potentially undermine the sustainability of your assets.