Here are some important facts about the Child Tax Credit: The Child Tax Credit is intended to offset the many expenses of raising children. The Child Tax Credit can be worth as much as $2,000 per child for Tax Years 2018-2025.; For Tax Years 2018-2025, the maximum refundable portion of the credit is $1,400 (equal to 15% of earned income above $2,500). After the reduction, the couple could claim only a $3,000 child tax credit. $4,000 total credit amount - $1,000 reduction = $3,000 final credit amount; Note: the credit is reduced by a total of $50 for each $1,000 your income exceeds the threshold, not by $50 for each child for whom you claim the credit. The Child Tax Credit can significantly reduce your tax bill if you meet all seven requirements: 1. age, 2. relationship, 3. support, 4. dependent status, 5. citizenship, 6. length of residency and 7. family income. You and/or your child must pass all seven to claim this tax credit.