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 Investments You’ve made investments your whole life. Work with us to help make the most of them. Disability Income This calculator estimates your chances of becoming disabled and your potential need for disability insurance. Strategies for Managing Student Loan Debt Five strategies for managing your student debt.