However, IRS
Publication 526, Charitable Contributions, states that the use of such formulas is not acceptable.
There are multitudes of IRS publications that pertain to charitable giving but
Publication 526 discusses "at a 30,000-foot level, what is and is not tax deductible," Taylor said.
More information about tax-deductible charitable donations is available in IRS
Publication 526, Charitable Contributions.
She recommends they familiarize themselves with "IRS
Publication 526, Charitable Contributions;" "Publication 561, Determining the Value of Donated Property" and "Publication 4303, A Donor's Guide to Car Donations." All these publications are available at www.irs.gov.
For more information on this see IRS
Publication 526, "Charitable Contributions," also available at www.irs.gov.
Charitable contributions are reported on Form 1040, Schedule A [IRC section 170(a)(1); also IRS Publication 526, Charitable Contributions].
Donors may refer to IRS Publication 526, Charitable Deductions, and IRS Publication 561, Determining the Value of Donated Property, to help them determine the fair market value of the donation.
For guidance on what is deductible and what isn't, start with IRS
Publication 526, Charitable Contributions (you can download it at www.irs.gov/pub/irs-pdf/p526.pdf).
NAVSUP
Publication 526, Foreign Military Sales Customer Supply System Guide.
An organization is not required to provide a statement if it is of a governmental nature (refer to IRS
Publication 526) or an organization formed only for religious benefit and the donor receives only intangible benefits, not sold in commercial transactions outside the donative context.
Documentation: The IRS requires receipts; check
Publication 526 for specific details.