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 Healthcare Costs in Retirement Without a solid approach, health care expenses may add up quickly and potentially alter your spending. Four Steps to Valuing an Estate Determining the value of your estate, or for someone who has passed away, can be a complex undertaking. Managing Money as a Couple Keys to preparing to grow wealthy together.