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 The Economic Journey of Your Morning Coffee Few contemplate the complex journey that brought their coffee from farm to kitchen table. Home Mortgage Deduction Use this calculator to assess the potential benefits of a home mortgage deduction. Helpful Retirement Strategies for Women Learn how to address the challenges that women face when planning for retirement.