"After reviewing the issue, and in light of the longstanding principles of the cases and tax regulations discussed above, the Treasury Department and the IRS believe that when a taxpayer receives or expects to receive a state or local tax credit in return for a payment or transfer to an entity listed in section 170(c), the receipt of this tax benefit constitutes a quid pro quo that may preclude a full deduction under section 170(a). In applying section 170 and the quid pro quo doctrine, the Treasury Department and the IRS do not believe it is appropriate to categorically exempt state or local tax benefits from the normal rules that apply to other benefits received by a taxpayer in exchange for a contribution," said the proposed guidance. 
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