If banks create money by lending it at interest, and that expanding money supply contributes to inflation, wouldn’t abolishing interest help protect everyone’s purchasing power-even that of bankers and bank owners themselves?
Consider the apparent paradox of modern banking: banks lend money, earn interest on it, and expand the purchasing power available in the economy. Yet when money grows faster than the supply of goods and services, prices rise and the purchasing power of money declines. Ordinary consumers suffer, but so do bank employees, business owners and even the shareholders of the very institutions benefiting from lending. What good is earning more money if that money buys progressively less?
The problem, therefore, is not simply that banks charge interest. It is that interest-based lending operates within a system in which credit creation can expand purchasing power without a corresponding increase in real production. If banks stopped charging interest and, more importantly, allocated interest-free financing according to productive capacity rather than allowing credit to expand indiscriminately, could inflationary pressures be reduced? This question deserves serious consideration, particularly in the context of Islamic banking, which offers an alternative framework for organising financial relationships.
Inflation is commonly explained through rising demand, supply shortages, currency depreciation, government borrowing and excessive money creation. Yet one important question deserves greater attention: does the structure of modern banking, particularly interest-based lending, encourage the expansion of money and debt in ways that contribute to inflation? If so, could a carefully regulated Islamic banking system offer a more sustainable alternative?
The argument is not that interest is the sole cause of inflation. Rather, interest-based credit creation is one of the structural mechanisms that can intensify inflationary pressures, particularly when financial expansion outpaces the production of real goods and services.
The Money Creation Mechanism
Modern banking is not simply a system in which banks lend existing deposits to borrowers. When a commercial bank approves a loan, it typically creates a corresponding deposit in the borrower’s account. The Bank of England has explained this mechanism in its analysis of money creation in the modern economy. Thus, lending expands the money supply, while repayment of loan principal generally reduces bank deposits and the corresponding loan balance.
The economic consequences depend on how this newly created purchasing power is used. When financing supports factories, agricultural production, energy projects and technological innovation, it can expand productive capacity. However, when credit fuels consumption, speculative property transactions or demand for existing assets without increasing output, it can intensify price pressures.
Interest adds another dimension to this process. Borrowers must repay the principal alongside an additional financial obligation, while banks seek returns on their lending activities. Businesses frequently incorporate financing costs into the prices of their products, transferring at least some of these costs to consumers. Higher interest rates can therefore contribute to production costs even as central banks use them to restrain demand.
The fundamental concern is that an economy may become increasingly dependent on expanding credit to sustain spending, investment and debt servicing. When monetary expansion persistently exceeds growth in productive capacity, the purchasing power of money comes under pressure.
Why Zero Interest Alone Is Not Enough
Abolishing interest would not automatically eliminate inflation. Indeed, if banks offered unlimited interest-free loans, demand for credit could increase dramatically, generating inflationary pressures of its own.
The more important reform is to combine interest-free financing with disciplined credit allocation. Banks should not be permitted to create purchasing power without sufficient consideration of its economic purpose and consequences.
Imagine a banking system that provides financing without interest but requires institutions to assess whether credit will support productive investment, essential services, sustainable enterprise or other economically valuable activities. Financing could be directed towards agriculture, manufacturing, housing construction, renewable energy and small businesses that generate employment and expand supply.
Conversely, credit that merely inflates the prices of existing assets, encourages excessive consumption or fuels speculative activity could face stricter limits.
Such a system would not eliminate every source of inflation, but it could help align the expansion of purchasing power with the growth of real economic capacity.
Islamic Banking: Beyond the Prohibition of Riba
Islamic finance offers a framework for pursuing this objective. Its prohibition of riba challenges the conventional practice of earning a predetermined return on a loan simply because money has been lent for a period.
Instead, Islamic financial principles emphasise legitimate trade, asset-linked transactions, contractual fairness and, in appropriate arrangements, the sharing of business risks and rewards. Instruments such as musharakah and mudarabah can connect financial returns to investment performance, while ijarah and murabaha facilitate financing through leasing and trade-based structures.
The International Monetary Fund has identified potential benefits of Islamic finance, including risk-sharing, stronger links between financing and economic activity, and opportunities to support small businesses and infrastructure investment.
Nevertheless, the distinction between principle and practice is crucial. Islamic banking does not automatically prevent excessive money creation. Trade-based financing can still generate debt obligations, and profit margins in some Islamic products may resemble conventional interest rates in their economic effects. If Islamic banks merely reproduce conventional lending structures through contractual alternatives, the broader inflationary problem may remain.
The objective, therefore, should be more ambitious than changing the terminology of financial products. Islamic banking should embody its underlying economic principles through genuine links to assets, productive activity and responsible risk allocation.
A Framework for Responsible Credit Creation
Governments and central banks should consider a regulatory framework that combines Shariah-compliant financing with effective monetary discipline. Banks could be encouraged to prioritise productive sectors while facing stronger scrutiny over financing that contributes primarily to speculative asset inflation.
Profit-and-loss-sharing arrangements could receive greater institutional support, particularly for viable small businesses, agriculture and manufacturing. Such arrangements require competent supervision, transparent accounting and safeguards against fraud and reckless investment.
At the same time, regulators must monitor the total expansion of credit, regardless of whether financing is conventional or Islamic. Interest-free lending cannot substitute for prudent monetary policy, sound public finances, adequate production and stable supply chains.
The objective is not to suppress legitimate borrowing or deny businesses access to capital. It is to ensure that the financial system serves the real economy rather than allowing the expansion of financial claims to become an end in itself.
Conclusion
The central question is not merely whether banks charge interest, but whether the creation of money through financing remains proportionate to an economy’s capacity to produce real wealth.
Interest-based credit expansion can intensify inflation when it generates purchasing power faster than output, while financing costs can add pressure to production prices. An Islamic banking system built around responsible credit allocation, productive investment and appropriate risk-sharing could offer a meaningful alternative.
However, abolishing interest without reforming credit creation would be insufficient. The real promise of Islamic banking lies in combining the prohibition of riba with a disciplined financial architecture that connects monetary expansion to productive economic activity.
Money should facilitate the creation and exchange of wealth, not become a mechanism through which purchasing power expands persistently beyond the economy’s capacity to deliver goods and services. That is the economic principle around which a more equitable and inflation-conscious banking system should be built.o
