Donations of certain household items and clothing are often tax deductible when you file your income tax return. This step-by-step guide will help you fill out the donation tax receipt and get things in order for tax season.We've created this stepbystep guide on everything you need to know about creating a donation receipt letter for tax purposes. Step 1: Complete the taxpayer information section. Use Schedule A (Form 1040) to figure your itemized deductions. You would have to itemize your entire tax return in order to take a deduction on charitable donations. Are monetary gifts tax-deductible? The form and instructions are available on the IRS site and can be accessed through this link, IRS Tax Forms. All donations are tax-deductible to the extent of the law. You will receive a letter of acknowledgment for tax-purposes.