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 its own tax return.   Thus, any contribution to a disregarded entity would be reported on the owner’s return as a contribution.  Practitioners believed that this result meant that the donor was treated as contributing to the charitable organization, rather than the LLC, and was thus entitled to a charitable contribution deduction.  Prior to the recent guidance, the IRS was unwilling to agree or disagree with this position.

On July 31, however, the IRS finally ruled that donations to a domestic single member LLC whose sole owner is a section 501(c)(3) organization will be treated as donations to a branch of the 501(c)(3) organization.  Accordingly, donors will be entitled to a charitable contribution deduction.  The IRS has also asked, but not required, that charities disclose in a acknowledgment or other statement to the donor that the single member LLC is wholly owned by a charity and treated by the charity as disregarded.