May our organization accept a contribution from a political action committee? We are recognized as a public charity.
Yes. Although charities may not contribute to a political action committee, a political party, or a political candidate, there is no regulation which prohibits a public charity from accepting a contribution from a political organization. In fact, distribution to a public charity is one of the specifically permitted ways to distribute leftover funds so that the money is not treated as personal income taxable to the candidate. For the limits on involvement in political campaigns, see Ready Reference Page: "IRS Issues New Guidance on Electioneering."