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. Coaches Coaches have helped you your whole life, in ways big and small. We'd like to be one of them. How Insurance Deductibles Work Knowing how insurance deductibles work can help you save money and give you peace of mind.