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. Retiring Earlier Than Expected? What To Know Retiring earlier than expected can be disheartening. Learn steps that can help you smoothe the road ahead. Retirement Plan Detectives A couple become Retirement Plan Detectives, searching records from old employers.