n 2012, the U.K. spent about 9.3 percent of GDP on health care, of which public expenditure, mainly on the NHS, accounted for about 84 percent (OECD, 2014a). The majority of funding comes from general taxation, and a smaller proportion from national insurance (a payroll tax); in 2006–2007 (the latest year for which data are available in this form), 76 percent came from general taxation and 18 percent from national insurance (Boyle, 2011). The NHS also receives income from copayments, those using NHS services as private patients, and some other minor sources.