The EITC is designed to help low to moderate-income workers by reducing their tax liability and often increasing their refunds. The amount of your EITC refund depends on your household size and number of qualifying children.

About one in five eligible filers overlook this credit, the IRS said. Certain filers can receive up to $7,830 more back in their refunds when claiming the credit.

The federal Earned Income Tax Credit is designed for low to moderate-income wage earners and is fully refundable, meaning even those who do not earn enough money to have taxes withheld are eligible. The Internal Revenue Service is reminding tax filers about a key credit worth up to $7,830.