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. Related Content A Cheat Sheet for Sending Your Kid to College Dropping off your child is loaded with emotions; here are a few tips for a smoother experience. Bursting the Bubble Tulips were the first, but they won’t be the last. What forms a “bubble” and what causes them to burst? Long-Term-Care Needs Determine your potential long-term care needs and how long your current assets might last.