Donation receipts are important! Here's how to create donation receipts your donors (and the IRS) will love.We've created this stepbystep guide on everything you need to know about creating a donation receipt letter for tax purposes. If you donated to a nonprofit at one of our locations, you are able to access an electronic copy of our nonprofit partners' tax receipt below. Enter your information and instantly receive a donation receipt for the items you bring to Goodwill SF Bay. Thank you for donating with us! Standard file format is Portable Document Format (PDF). To Whom It May Concern,. Please accept this letter as authorization to process the following securities donation for the benefit of the. You may upload documentation to prove your claim.