Keep a record of any items you donate to a charity. We've created this stepbystep guide on everything you need to know about creating a donation receipt letter for tax purposes.To calculate your New York State itemized deduction, complete Form IT-196. Call 718-729-2171 when you arrive at the dock. Once we receive your value, a tax donation letter will be provided within 1-2 weeks of your donation. The Donation Value Guide below helps you determine the approximate tax-deductible value of some of the more commonly donated items. Call 1-877-646-1976 or fill out an online donation form. A member of our staff will contact you within 24 hours of the next business day. Check the exemption(s) that apply to your filing. If your organization is claiming an exemption under one category (7A or EPTL only filers) or both.