Currently, only middle- and upper-income families receive the full $2,000 credit per child. That is because the credit reduces taxes owed and is not fully refundable, meaning many low-income families who don’t earn enough to owe more than the credit is worth can’t take full advantage of it. 

But under the agreement announced Tuesday, poor families would be newly eligible to receive the tax credit for every child — even if they do not qualify for the full $2,000 per kid.