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 Message Thank you! Oops! Related Content Bull & Bear Markets: A Timeline This helpful infographic will define bull and bear markets, as well as give a historical overview. Changing Unhealthy Behaviors Five phases to changing unhealthy behaviors. Potential Income from an IRA Estimate your monthly and annual income from various IRA types.