When you donate, the DGR will usually issue you with a receipt, but they don't have to. You can only claim a tax deduction for gifts or donations to organisations which are deductible gift recipients (DGRs).How much in donations can I claim on tax without receipts? How much can I claim without receipts? Understand what a charitable donation is and how to claim a tax deduction without a tax receipt with IRS Form 8283. For a donation to be tax deductible, it must be made to an organisation endorsed as a deductible gift recipient (DGR). It must also be a genuine gift. Generally, you can only deduct charitable contributions if you itemize deductions on Schedule A (Form 1040), Itemized Deductions. No special form is required; a handwritten letter will do. To claim a tax-deductible donation, itemize your deductions rather than using the standard deduction.