You just answered your own question ... it was limited due to the low income ... review the CTC worksheet to see how this was calculated. Up to $1,400 of the credit is refundable and is phased-in based on your earned income. In most cases, you must have $2,500 or more of earned income to be eligible for any portion of the refundable Child Tax Credit. 6000 - 2500 = 3500 x .15% = 525
