UPDATE 1/13/23: If you’re installing today from AppExchange, it’s a new version 1.4 that you can run by running a flow called Year End Tax Flow. New detailed instructions below. To install the new version, please uninstall the old version first! Go to Setup, search for “Installed Packages,” find “Year End Tax” and uninstall that.
Easy peasy list of all last year’s donations
Send your donors (contact records only) a tax receipt at the beginning of the new year listing all of last year’s donations. For Salesforce Nonprofit Success Pack users, this unmanaged package will generate a table for each donor listing the gifts they made last year. Use your own email to send a tax receipt by email. The table lists the amount, date and, optionally, the campaign name of each donation.

Thanks for the great app, just in time…Simple, easy, elegant, and just what we needed.
David, Eaglesrest.org