Review the rules about what qualifies someone as a dependent or qualifying child because you may have listed someone who doesn't qualify. Does anyone have sample letters to the IRS for different situations?Maybe one with code numbers and explainations. For every child or dependent you're claiming a credit for, you must send us: Documentation for proving you have a child or dependent. We sent you this notice because we received a tax return from another taxpayer claiming a dependent or qualifying child with the same Social Security number. You received this letter because we determined that you're not entitled to claim exempt status or more than a specified number of withholding allowances. Answer: To claim your child as your dependent, your child must meet either the qualifying child test or the qualifying relative test: If you amended with TurboTax and properly filled out the dependent information, Schedule 8812 should have efiled with your amended return. To claim your child as your dependent, your child must meet either the qualifying child test or the qualifying relative test. You can currently claim dependents only for certain tax credits and deductions.