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 Succeeding at Business Succession There are a number of reasons for business owners to consider a business succession plan sooner rather than later. Why Everyone Needs an Estate Strategy Do you have an estate strategy? You should. Critical Estate Documents Sound estate management includes creating financial and healthcare documents. Here's an inside look.