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 AI Tools Changing Retiree Entrepreneurship The impact that Artificial Intelligence (AI) tools can have on retirees with a consulting or small business venture. Retiree Health Care Coverage Overseas Retirees traveling abroad need to know that their health insurance travels with them. Choosing a Retirement Plan that Fits Your Business To choose a plan, it’s important to ask yourself four key questions.