From BryanCaveCharityLaw.com

Tax practitioners have long believed that donations could be made to single member LLCs wholly owned by section 501(c)(3) organizations on the theory that, for tax purposes, the donation was treated as made to the charity and not the LLC.  In long awaited guidance, the IRS has finally agreed in Notice 2012-52.  The analysis in the notice is not surprising, and is in fact, exactly what tax practitioners have been arguing ever since disregarded entities came into existence.

Generally, a business entity that has a single owner and that is not a corporation is treated as disregarded as an entity separate from its owner.  These “business entities” are typically limited liability companies. If an entity is disregarded, its operations and activities are treated in the same manner as a sole proprietorship, branch, or division of the owner, and the owner generally reports all income, loss, deductions, and credits on