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 Changing Unhealthy Behaviors Five phases to changing unhealthy behaviors. A Checklist for When a Spouse or Parent Passes An overview of some fundamental steps when a loved one passes. Home Mortgage Deduction Use this calculator to assess the potential benefits of a home mortgage deduction.