A child tax credit (CTC) is a tax credit for parents with dependent children given by various countries. The credit is often linked to the number of dependent children a taxpayer has and sometimes the taxpayer's income level. For example, with the Child Tax Credit in the United States, only families making less than $400,000 per year may claim the full CTC. Similarly, in the United Kingdom, the tax credit is only available for families making less than £42,000 per year.