Ill. Admin. Code tit. 86 § 1050.150
The Act authorizes taxpayers, subject to specific limitations and requirements, to receive an income tax credit for qualified contributions made to permanent endowment fund. Taxpayers wishing to make qualified contributions must first apply to the Department for approval to make qualified contributions. Once approved, taxpayers are issued contribution authorization certificates by the Department, which must be provided to the permanent endowment fund by taxpayers when making their qualified contributions. A permanent endowment fund must apply to the Department for approval before it can issue certificates of receipt to taxpayers making qualified contributions. Certificates of receipt issued to the taxpayer by a permanent endowment fund may be used to document the tax credit claimed by the taxpayer on the income tax return for the taxable year in which the qualified contribution is made.
Ill. Admin. Code tit. 86, § 1050.150