Saudi Crown Prince Mohammed bin Salman has directed the government to resolve a dispute with banks facing higher Islamic tax liabilities. The General Authority of Zakat and Tax (GAZT) is demanding tax for years going back as far as 2002. Banks are contesting the extra payments, which are estimated at around 9.8 billion riyals ($2.6 billion) across 11 of the kingdom’s 12 listed banks. Although Saudi banks and other firms generally do not pay corporate tax, they are subject to zakat, a 2.5% levy on each bank’s net worth. Lenders and the authorities have been at loggerheads over the amount of zakat they pay for more than a decade. The dispute has captured more attention recently as the kingdom seeks to attract billions of dollars of foreign investment from global equity indexes. Bankers say the way the tax is calculated is opaque and the heavy financial demands on banks threaten the stability of the banking sector and capital markets.