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 Avoiding Cognitive Decline Try these activities to keep your brain sharp. The Lowdown on Those Free Credit Scores What’s the deal with your yearly free credit report? 3 Estate Challenges for Blended Families This article will help your clients with blended families think and prepare their estate strategy.