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 4 Steps to Protecting a Child with Disabilities Planning for a child with special needs can be complicated, confusing, and even overwhelming. Tax Rules When Selling Your Home The tax rules governing profits you realize from the sale of your home have changed in recent years. Your DNA Test Preparing for the unexpected can make all the difference if your family relies on your income.