If parents are separated and share 50/50 custody, they can each claim part of the childcare costs they actually paid. Receipts should be issued to both parents for their individual percentage paid by the childcare provider.
The following CRA information explains in greater detail the circumstances of childcare and shared custody (Sec 1.34) and how to handle "reimbursements" between parents (Sec 1.35). Child Care Expense Deduction
For more information please see the Canada Revenue Agency(CRA) link about Child custody and the amount for an eligible dependant
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