To add your birthday to your account:
On the app:
1. Tap the ‘Account’ icon in the top-right corner of the home page.
2. Select ‘Profile’ from the menu.
3. Enter your date of birth and select ‘Update’ at the bottom of the page.
On TimHortons.ca:
1. Click your name in the top-right corner of the screen.
2. Select 'Account Info'.
3. Enter your birthday details and click on ‘Update’.