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 Emotional vs. Strategic Decisions Information vs. instinct. Are your choices based on evidence of emotion? All Muni Bonds Are Not Created Equal Gaining a better understanding of municipal bonds makes more sense than ever. Asset Allocation Consider how your assets are allocated and if that allocation is consistent with your time frame and risk tolerance.