Letter 6419 includes: Number of qualifying children used to calculate advance payments, and repayment protection when filing your 2021 federal tax return. How to claim this credit.Child and Dependent Care Enhancement Tax Credit. Pennsylvania offers a state tax credit that can help ease child and dependent care costs for working families. This advice is for you if: You got a letter from the IRS saying "you're being audited" or one describing "proposed changes" to your tax return. If your parent (or someone else) can claim you as a dependent, use this table to see if you must file a return. Information parents and guardians with qualifying children about the federal Child Tax Credit (CTC). The CTC is not a City program. When you prepare your federal income tax return, it's likely you want to seek every possible deduction to reduce the amount of tax you owe.