We've created this stepbystep guide on everything you need to know about creating a donation receipt letter for tax purposes. To make a donation, please visit or contact one of our drop off sites today.Your donations are tax deductible and you will be given a receipt. Your donation is tax deductible to the full extent of the law. Please consult you Tax Advisor or Accountant for specific donation questions. To create a 501(c)(3)-compliant receipt with Donorbox, simply log in and use our easy template editor. Dear Mr. Watson: Enclosed are the original and one copy of your income tax returns for the period ended June 30,. The online donation form must be filled out completely in order for your request to be considered. Filling out this donation receipt is straightforward.