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 Emerging Market Opportunities What are your options for investing in emerging markets? Should I Accept a Free Credit Lock? Learn the ins and outs of credit locks, freezes, and more. The Power of Compound Interest Learn how to harness the power of compound interest for your investments.