Each retailer has it's own processes and as such donations can be added at different times depending on who you have shopped with.
For most, your donation will be added on the day that you shop. There are some that can take a little longer, for example Amazon donations are added once the goods are dispatched to you. Some retailers will wait until their returns terms have passed, this means that when the donation is added, it will be confirmed so no risk of it being reversed.
The ones to be most aware of are Travel, Insurance and Utility donations which can take much longer (but are well worth the wait) these can take 90 days after purchase, or for travel 30 days after your trip.
When a donation is added to your account, it will be classed as pending until it is confirmed by the retailer (this can take a further 120 days to happen and longer for those Travel, Insurance and Utility donations) but once it has been confirmed, we will make sure it is included in the next payment quarter.