Fill this donation request form and you will receive your already filled donation receipt in PDF format directly in your inbox. SCU's tax ID is 94-1156617.This receipt is the only record of your tax-deductible donation. 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. - Print and fill out this form and mail it along with your donation. Donations are tax-deductible. The Federal Tax I.D. number for the Santa Clara County Library is 35-2345011. The City of Santa Clara now offers electronic filing as well as viewing of campaign disclosure statements. You may qualify for a tax deduction while supporting a cause that is near and dear to your heart! We've created this stepbystep guide on everything you need to know about creating a donation receipt letter for tax purposes.