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 Pullbacks, Corrections, and Bear Markets When the market experiences volatility, it may be a good time to review these common terms. Why Medicare Should Be Part of Your Retirement Strategy How Medicare can address health care needs in your retirement strategy. A Look at Diversification Diversification is an investment principle designed to manage risk, but it can't prevent against a loss.