The so-called FairTax, if enacted, would be the largest structural change in U.S. taxation in 110 years. Wages, capital gains and corporate profits would become tax-free. The new levy would hit consumption instead. The national sales tax would apply to a broad base including food, medical care and new homes.
Mr. McCarthy (R., Calif.) told reporters late Tuesday that he doesn’t support the FairTax, distancing himself from an idea with support from a vocal segment of his party but that has begun to cause political headaches for Republicans.