Yes, when you want to add funds to your Tims Gift Card, the minimum amount is $5.
Your total balance on the gift card cannot be higher than $100.
Example: If your balance is $80 and you try to add $40, it will not be processed because your balance would exceed the $100 maximum. However, you can add $20 to bring the account value up to the $100 maximum.
As an extra security measure to reduce the risk of fraud, you cannot reload more than $50 per week to your in-app balance using a single credit card. Any account attempt to add funds using a credit card that exceeds the weekly $50 limit, will not be processed.