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 Rightsizing for Retirement What does your home really cost? Asset Allocation Consider how your assets are allocated and if that allocation is consistent with your time frame and risk tolerance. Bridging the Confidence Gap In the world of finance, the effects of the "confidence gap" can be especially apparent.