Each bank or branch processes these updates in a different time frame. The refund will typically post anywhere from 1-10 business days. However, it may not post until the next statement.

The only exceptions to these are:
transactions in excess of $10,000
Sponsorships
Booth Registrations

These can take up to 7 business to days to process before the reversal is issued by Blackbaud to the transaction owner's bank.