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 The Business Cycle Understanding the economy's cycles can help put current business conditions in better perspective. How to Make the Tax Code Work for You When you take the time to learn more about how it works, you may be able to put the tax code to work for you. Types of Stock Market Analysis Most stock market analysis falls into three broad groups: Fundamental, technical, and sentimental. Here’s a look at each.