Do you need a donation receipt letter to claim a tax deduction? We've created this stepbystep guide on everything you need to know about creating a donation receipt letter for tax purposes.A charitable organization soliciting in Maryland generally must file documents with the Office of the Secretary of State. Collect and keep all relevant documentation that supports your charitable contributions. Complete Form 502CR, following the instructions provided. Submit your completed Form 502CR with your Maryland return. This receipt is issued to individuals who have donated cash or payment, personal property, or a vehicle and seek to claim the donation as a tax deduction. Complete this form to request your donation tax receipt. 2) if you end up using it, you need to mention why you're doing so and how long you would in the donation receipt. Cash donations without a receipt cannot be deducted.