Earned Income Credit (EIC) Calculator Earned Income Credit (EIC)is a tax credit available to low income earners. In some cases theEIC can be greater than your total income tax bill, providing anincome tax refund to families that may have little or no income taxwithheld from their paychecks. Use this calculator see if youqualify for the Earned Income Credit, and if so, how much it mightbe worth to you and your family. This calculator creates estimatedvalues for tax year 2010.