If you are on MAT leave, you cannot claim child care costs, correct?

[TurboTax-Holly]

You can only claim child care costs if you're working or going to school full time. 

[TurboTax-Julie-S]

Generally, childcare expenses are only valid if you’re working or attending school. However, there are exceptions. For example, if you have a temporary leave of absence from work (such as maternity leave fees you pay for your other kids’ childcare during this time may be eligible). Here's more info: https://www.canada.ca/en/revenue-agency/services/tax/technical-information/income-tax/income-tax-fol...