With the Child Tax Credit, you may be able to reduce the federal income tax you owe by up to $1,000 for each qualifying child under age 17. A qualifying child for this credit is someone who:

1. Is claimed as your dependent,
2. Was under age 17 at the end of the tax year,
3. Is your son, daughter, adopted child, grandchild, stepchild or eligible foster child, your sibling, stepsibling or their descendant, and
4. Is a U.S. citizen or resident alien.

The credit is limited if your modified adjusted gross income is above a certain amount. The amount at which this phase-out begins varies depending on your filing status (amounts current as of 2005):

• Married Filing Jointly $110,000
• Married Filing Separately $55,000
• All others $75,000

In addition, the Child Tax Credit is limited by the amount of the income tax you owe as well as any alternative minimum tax you owe. For example, if the amount of the credit you can claim is $1,000, but the amount of your income tax is $500, the credit ordinarily will be limited to $500.

However, there are two exceptions to this general rule. If the amount of your Child Tax Credit is greater than the amount of income tax you owe, you may be able to claim some or all of the difference as an "additional" Child Tax Credit. First, you may claim up to 15 percent of the amount by which your earned income exceeds $10,750 (for members of the Armed Forces who served in a combat zone, nontaxable combat pay counts as earned income when figuring this credit limit). Second, if you have three or more qualifying children, you may claim up to the amount of Social Security taxes you paid during the year, minus any Earned Income Tax Credit you receive. If you qualify under both these exceptions, you receive the greater of the two amounts, up to the difference between your tax liability and your regular Child Tax Credit. Use Form 8812 to figure the additional Child Tax Credit.