Hey!! Thanks for posting and asking. The only way to do this will be to visit Transactions on your Square Dashboard, filter for all sales within a calendar year, then filter by customer. You can search your customer's name, then export a Transaction CSV.
This will export all transactions tied to that customer for the calendar year and you can print that CSV report, or even take a screenshot of all the customer's sales in Transactions Reports if they fit on the same page.
Here is a screenshot of what your filter settings should look like:
Let me know if you have any other questions. 🙂
