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.This planning kit will assist you in coordinating an easy and successful drive. Complete the online Donate to FCPS form and, where applicable, make note that the donated item has been received. Donations via credit card can be made using the form below. If you would prefer to mail in your donation, please print and include this form. Check (made out to City of Fairfax), Cash, or Credit Card (everything except American Express). Bystep guide on how to fill out a Goodwill tax donation receipt. This form is available at our stores in Maine, New Hampshire and Vermont. You are about to make an event donation to the Fairfax Walk.