The receipt, also called a contemporaneous written acknowledgment must be in writing and include: The amount of your cash contribution. Everything your nonprofit needs to know about Donation Receipts: When to issue, what to include, how to automate the process.Learn the best practices! This publication explains how individuals claim a deduction for charitable contributions. Learn how to easily create your donation receipts and the best practices to follow in the year-end receipts to your donors. We've created this stepbystep guide on everything you need to know about creating a donation receipt letter for tax purposes. Donation receipts must be written down in some manner, whether in a letter or email, for the sake of accurate record keeping. Cash donations without a receipt cannot be deducted. What is the format for donation receipt for income tax purposes? How do I invoice a donation?