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 Perception vs. Reality There’s an alarming difference between perception and reality for current and future retirees. Healthcare Costs in Retirement Without a solid approach, healthcare expenses may add up quickly and potentially alter your spending. The Latte Lie and Other Myths Check out this video to begin separating fact from fiction.