Determine the amount of the tax credit. Multiply the number of qualifying dependents by $1,000 to get the maximum credit amount. For example, if you have three qualifying dependents, the maximum child tax credit is $3,000. If your Modified Adjusted Gross Income (MAGI) exceeds $110,000 for married filing jointly,...What are the rules for child tax credit?
Some of the other child-related eligibility requirements for the Child Tax Credit include: You must have provided at least half of the child’s support during the last year, and the child must have lived with you for at least half the year (there are some exceptions to this rule; the IRS has the details here).