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 A Bucket Plan to Go with Your Bucket List Longer, healthier living can put greater stress on retirement assets; the bucket approach may be one answer. Choosing a Retirement Plan that Fits Your Business To choose a plan, it’s important to ask yourself four key questions. Coaches Coaches have helped you your whole life, in ways big and small. We'd like to be one of them.