5.3 - Financial regulation and global institutions
Financial regulation aims to preserve useful services while limiting harm to customers and the wider economy. Learn how central banks and other authorities use different tools, and why the IMF and World Bank support global stability without acting as a single world banking regulator.
Why finance needs regulation
Financial regulation sets and enforces rules intended to make financial services safer, fairer and more resilient.
An individual borrower or saver may struggle to judge a complex product or a bank's solvency. Asymmetric information can permit misleading sales, hidden charges or excessive risk-taking. Rules on disclosure, suitability and conduct help customers make informed choices. Market-integrity rules seek to limit fraud, manipulation and abuse, improving trust in prices and transactions.
Financial failure can also impose costs outside the institution. If a bank cannot make payments or repay deposits, firms may lose working capital and households may cut spending. Other institutions can suffer losses on claims against it; fears about similar banks can trigger withdrawals. Systemic risk is the risk that disruption spreads and damages the functioning of the wider financial system. Institutions choosing their own risk may not account fully for these external costs.
Deposit protection and emergency support can reduce panic, but expectations of rescue can create moral hazard: owners, managers or lenders may take greater risks if they expect others to bear losses. Regulation and credible resolution arrangements seek to retain stability while making private decision-makers absorb appropriate losses. The objective is not zero failure; preventing every weak firm from exiting can itself waste resources.
Regulation also has costs. Compliance uses staff and technology, and complex requirements can deter entry. Rules that make lending safer may restrict credit if applied abruptly. Compare these costs with avoided crises, stronger confidence and sustainable access, rather than assume that either maximum regulation or none is always best.
Prudential and conduct tools
Different regulatory tools address different risks, so capital rules are not a substitute for liquidity or customer protection.
Capital requirements demand a cushion of owners' funds and other eligible loss-absorbing resources relative to exposures. Losses reduce that cushion before they reach protected creditors. Capital is not a cash reserve put aside to meet today's withdrawals. Liquidity requirements instead require institutions to withstand payment demands with accessible assets and suitable funding. A solvent bank can be illiquid; a bank with cash today can still have losses exceeding its assets.
| Tool | Intended mechanism | Important limit |
|---|---|---|
| Capital and leverage limits | Reduce excessive borrowing and increase loss absorption | Risk measurements can be wrong; adjustment may constrain lending |
| Liquidity and stable-funding rules | Reduce vulnerability to withdrawals and short-term funding loss | Liquid assets have opportunity costs; extreme panic can exceed stress assumptions |
| Stress tests and supervision | Expose vulnerability under adverse scenarios and require action | Unknown shocks and correlated behaviours may escape the scenario |
| Disclosure and conduct rules | Improve customer information and limit harmful sales | Disclosure may be too complex, and enforcement needs resources |
| Resolution plans and deposit protection | Preserve critical services and reduce panic while allocating losses | Poor design can reinforce rescue expectations |
Microprudential policy focuses on the safety of individual institutions. Macroprudential policy addresses risks to the system, including a credit boom in which many banks lend against rising property prices. A countercyclical capital buffer can build resilience during stronger credit conditions and be released in stress, reducing pressure for simultaneous lending cuts. Limits on high-risk mortgage lending can target a particular vulnerability more directly than raising every borrower's interest rate.
The effectiveness of regulation depends on enforcement, credible information and the ability to cover risks migrating to less regulated lenders. Regulatory arbitrage moves activity or changes its form to avoid a rule while retaining the underlying risk. Coordination and proportionate rules can reduce this leakage, but regulation cannot eliminate uncertainty.
What a central bank does
A central bank supports the monetary and financial system through functions that differ from ordinary retail banking.
Typical functions include issuing currency, supplying settlement balances to banks, operating or overseeing important payment infrastructure, implementing monetary policy and acting as banker to government. Many hold foreign-exchange reserves and help manage financial stress. A lender of last resort can provide liquidity when institutions cannot obtain it normally, seeking to prevent temporary funding difficulties spreading into a payments crisis. Liquidity lending is not a guarantee that every insolvent institution will be rescued.
In the UK, the Bank of England sets monetary policy through its Monetary Policy Committee (MPC), monitors system risks through its Financial Policy Committee (FPC), and supervises major financial institutions through the Prudential Regulation Authority (PRA). Its activities also include banknotes, core payments, liquidity support and resolution. These current functions are described by the Bank of England.
The separate Financial Conduct Authority (FCA) protects consumers, market integrity and effective competition, and has relevant prudential responsibilities for firms outside the PRA's remit. The division of responsibilities prevents the misleading claim that the central bank alone regulates all financial conduct. The FCA's current account of its role was updated in July 2026.
For an illustrative bank with good-quality long-term loans but a sudden withdrawal surge, collateralised liquidity support may prevent forced fire-sales. If its loans have instead lost so much value that liabilities exceed assets, more liquidity alone does not restore net worth. Loss allocation, recapitalisation or orderly resolution may be required. The distinction matters for choosing the response and limiting moral hazard.
Choosing tools for macroeconomic targets
A central bank's most effective instrument depends on the source of the problem and the indicator it is trying to influence.
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