Islamic banking and finance

Lore & Background

Islamic finance is based on the belief that all forms of interest are riba and hence prohibited. The word 'riba' literally means 'excess or addition' and has been translated as 'interest' or 'usury'. According to some Islamic economists, the elimination of interest followed a gradual process in early Islam, culminating under Caliph Umar (634–644 CE). However, other sources note that interest continued in Muslim society, sometimes through legal ruses, including during the Ottoman Empire. During the Islamic Golden Age, some classical jurists held that interest on gold and silver currencies was unlawful, but interest on fiat money might be acceptable.

Reader's Guide

The modern Islamic banking movement began in the late 1940s and early 1950s with activists and scholars such as Anwar Qureshi, Naeem Siddiqui, Abul A'la Maududi, and Muhammad Hamidullah, who proposed a banking system based on mudarabah (profit-sharing and loss-bearing). Conferences in the 1970s, including the First International Conference on Islamic Economics in Mecca in 1976, were instrumental in applying theory to practice. By 2004, the prohibition of interest was considered a settled issue in Pakistan, where a parliamentary challenge to it caused pandemonium. The industry has been lauded by devout Muslims for rejecting Western economic dominance, but also criticized for failing to develop true profit-and-loss sharing and instead using ruses to conceal interest, with higher costs and risks than conventional banks.

Did You Know?

• By 2009, there were over 300 Islamic banks and 250 mutual funds worldwide.
• The Gulf Cooperation Council region accounted for 53.1% of Sharia-compliant assets as measured by the IFSB in 2024.
• Some Islamic scholars, including Muhammad Abduh and Yusuf al-Qaradawi, have questioned whether riba includes all interest payments.

Theological Foundations and Permitted Modes

Islamic banking rests on a single theological premise: that any fixed charge on borrowed money constitutes riba, a term meaning 'excess or addition' in Arabic, and is therefore forbidden under Sharia. Beyond this prohibition on interest, the system also bars investment in enterprises whose goods or services violate Islamic principles, such as the production of pork or alcohol, labeling such activity haram. In place of conventional lending, practitioners rely on a toolkit of contractual structures. Mudarabah arranges for the financier and entrepreneur to share both profit and loss; musharaka establishes a joint venture in which all parties contribute capital and bear risk proportionally; murabahah permits a seller to disclose cost and add a markup; ijarah structures a rental or leasing relationship; and wadiah provides a mechanism for safekeeping of assets. A central philosophical thread runs through these instruments: profit is treated not as a guaranteed return but as a symbol of mutual sharing of gains, losses, and risk. Loans remain permissible in principle, provided the return is tied to the actual performance of the underlying investment rather than a predetermined rate.

From Early Jurisprudence to Institutional Birth

The prohibition of interest in Islamic thought did not arrive overnight. According to economists Choudhury and Malik, its elimination unfolded gradually in the early centuries of Islam, reaching full institutional expression under Caliph Umar in the mid-seventh century. Yet the historical record is contested: the Encyclopedia of Islam and the Muslim World and scholar Timur Kuran note that lending at interest persisted in Muslim societies, sometimes through legal ruses known as hīyal, well into the Ottoman period. Classical jurists, as one source reports, generally held that interest on gold and silver coinage was unlawful while permitting it on paper or base-metal currencies to a degree. The modern movement took shape in the late 1940s and early 1950s, when scholars including Anwar Qureshi, Naeem Siddiqui, Abul A'la Maududi, and Muhammad Hamidullah argued that commercial banks were a necessary evil and proposed replacing fixed-rate lending with mudarabah-based profit sharing. Subsequent works by Muhammad Uzair in 1955, Abdullah al-Araby in 1967, al-Najjar in 1971, and Muhammad Baqir al-Sadr deepened the theoretical foundation. A series of landmark gatherings—the 1970 Karachi finance ministers' conference, the 1972 Egyptian study, the 1976 Mecca conference, and the 1977 London conference—transformed academic theory into the first operational interest-free banks.

Global Expansion and Regional Concentration

What began as a small cluster of activist-led experiments in the late twentieth century has swollen into a multi-trillion-dollar industry. By 2009, more than three hundred banks and two hundred fifty mutual funds worldwide had adopted Sharia-compliant structures. Two decades later, the scale is staggering: the Islamic Financial Services Board's 2025 Stability Report placed total Sharia-compliant assets at roughly 3.88 trillion US dollars, while the ICD–LSEG Islamic Finance Development Report, applying a broader definition across 140 countries, estimated the figure at nearly 6 trillion. Geographic concentration remains pronounced. The Gulf Cooperation Council region commands the largest share, accounting for 53.1 percent of IFSB-measured assets. East Asia and the Pacific follow at 21.9 percent, a figure propelled largely by Malaysia and Indonesia. Despite this rapid expansion, Islamic banking still represents only a fraction of the total banking assets held by Muslims globally. Nevertheless, it has been growing at a pace that outstrips the broader banking sector since its inception, and analysts project that this outperformance will continue.

Eulogies and Critiques

Supporters within the devout Muslim community celebrate Islamic banking as a return to divine guidance, a deliberate rejection of what they describe as Western political and economic dominance, and the most visible emblem of Islamic revivalism. Its most enthusiastic advocates paint a utopian picture: once fully implemented, the system would eliminate inflation, unemployment, exploitation, and poverty. Critics, however, raise pointed objections. They argue that the industry has largely failed to deliver the genuine profit-and-loss sharing and ethically grounded investment models that early promoters like Maududi and Siddiqui envisioned. Instead, they contend, many institutions simply wrap conventional banking products in language that satisfies the formal letter of Islamic law while employing what they call ruses and subterfuges to conceal interest. These critics further warn that such structures can entail higher transaction costs and greater risk exposure than their conventional ribawi counterparts. The tension between the movement's founding ideal of shared risk and its commercial reality remains one of the most debated fault lines in the field.