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 How Financial Professionals Are Compensated Read this overview to learn how financial advisors are compensated. Making a Charitable Gift Did you know that there are benefits and limitations when you decide to donate stock? Learn more about your options. Weighing the Benefits of Prepaid Debit Cards It's important to understand the pros and cons when considering a prepaid debit card.