All other taxpayers use the worksheet accompanying form 1040 or form 1040a. [title] Enter the number of qualifying children you have on the first line.
[header] How to claim a child tax credit [title] Make sure you qualify to use this form. [step] If your child has an individual tax identification number instead of a social security number, you must use schedule 8812. If you're claiming certain other credits such as the adoption credit or mortgage interest credit, you need to use publication 972.