Complete a Schedule 8812 form by providing the names and Social Security numbers of the children you are claiming the child tax credit for, explains the Internal Revenue Service, as of 2014. You must also check the box in column four of line 6c.
The Child Tax Credit may allow you to take a $1,000 credit for qualifying children under the age of 17 depending on income, explains the IRS. A qualifying child is someone who meets the criteria of age, support, relationship, dependent, residence and citizenship.
Your qualifying relationship with the child includes your own child, stepchild, foster child or sibling of the taxpayer; support means the taxpayer provides over half of the child's support; dependent means you can claim the child on your tax return; and citizenship means the child must be a United States citizen.
Generally the child tax credit is nonrefundable, meaning if your tax credit exceeds your tax liability, your tax bill is reduced to zero, and you lose the remaining unused credit, explains Turbo Tax. The child tax credit is reduced if your adjusted gross income exceeds a certain limit. The amount is reduced by $50 for each $1,000 by which your adjusted gross income exceeds the limit amount.