The Tax Cuts and Jobs Act, which was passed in 2017, increased the Child Tax Credit to $2,000 per qualifying child. This was a significant increase from the previous credit amount. Additionally, the Act made the Child Tax Credit partially refundable, allowing eligible taxpayers to receive a refund of up to $1,400 per child, even if they don't owe any federal income tax. It also raised the income thresholds at which the credit begins to phase out, allowing more families to benefit from the credit.