Understand what a charitable donation is and how to claim a tax deduction without a tax receipt with IRS Form 8283. You cannot claim a charitable contribution without a receipt.Generally, you can only deduct charitable contributions if you itemize deductions on Schedule A (Form 1040), Itemized Deductions. The letter also states that you will not be asked to sign any fundraising letters or to solicit donations. Receipts - Remember to request a receipt from the attendant on duty when making a donation! We do not retain copies.