OCR A Level Economics: Central banks and financial regulation (H460)

This guide covers the role of the central bank and financial regulation in the financial sector area of study of the OCR A Level Economics (H460) specification, Version 3.0 (June 2026), for first assessment in 2021. It is macroeconomics content, and none of it is labelled as a separate stage. Every figure is invented and illustrative. Country K, its currency units (CU) and its banks are made up.

Pair it with the revision notes and the practice questions. See also the OCR Economics hub, the checklist and the free diagnostics. For the instruments of monetary policy, the liquidity trap and symmetric or asymmetric targets, use the monetary policy guide. This page does not repeat them.

What the specification asks for

Outcome	Where
Explain the functions of a central bank	Section 1
Independent versus controlled bank, and their effectiveness	Sections 2 and 6
Policy measures for primary and secondary objectives	Section 3
Targeting indicators such as an inflation target	Section 4
Lender of last resort	Section 5
Why, how, and the harm of under-regulation	Sections 7 to 9
Regulatory change and the 2007-08 crisis	Section 10
Benefits and importance of regulation	Section 11
The IMF and World Bank	Section 12

1. Functions of a central bank

The central bank is the public body sitting at the heart of a country’s financial system. Its functions are:

• Operating monetary policy: setting the policy interest rate and, where used, creating money to buy assets.
• Issuing notes and coins.
• Banker to the government: it holds government accounts and often manages its borrowing.
• Banker to the commercial banks: banks hold settlement balances with it, used to clear payments between them.
• Lender of last resort to solvent banks that cannot find funds elsewhere (Section 5).
• Supervising or helping to regulate the financial system.
• Managing the exchange rate or foreign reserves, if the government wishes.

Primary and secondary objectives. In the specification’s example, the Bank of England, the first objective is price stability through an inflation target. A secondary objective is to support the government’s wider aims, such as growth and employment, provided the target is not put at risk. Financial stability is a further objective in many countries.

2. Independent versus government-controlled

Feature	Independent	Government-controlled
Who sets the policy rate	Appointed experts in a committee	Ministers, or the bank on their instruction
Objective	Fixed target, usually inflation	Changes with government priorities
Time horizon	Long-term	Tied to the electoral cycle

In many countries the government still sets the target and the bank decides how to hit it. That is operational independence.

3. Policy measures for primary and secondary objectives

Primary objective (inflation). The main measure is the policy interest rate. A higher rate raises borrowing costs, reduces consumption and investment, and lowers aggregate demand and inflation. Other measures are quantitative easing (creating money to buy bonds) and forward guidance (telling the public the likely path of rates to shape expectations).

Secondary objectives (growth and employment). Lower rates or asset purchases support demand when output is below potential, but only while inflation is under control.

Financial stability. The bank can use macroprudential tools, such as higher capital requirements in a boom, limits on high loan-to-income mortgages and stress tests.

Worked example: policy rate pass-through. Country K’s bank cuts its policy rate by 0.75 percentage points. Commercial banks pass on 80% to variable-rate loans.

Fall in loan rate = 0.75 × 0.80 = 0.60 percentage points
Household with CU 150,000 interest-only loan:
saving per year  = 150,000 × 0.006 = CU 900
saving per month = 900 ÷ 12 = CU 75

Worked example: asset purchases. A bond pays a fixed coupon of CU 3 per CU 100 of face value. At a market price of CU 100 the yield is 3 ÷ 100 = 3.00%. The central bank buys bonds on a large scale and the price rises to CU 104. The yield is now 3 ÷ 104 = 2.88%, a fall of about 0.12 percentage points. Lower long-term yields cut borrowing costs for firms and households.

Effectiveness. Evaluate by:

• Strength of the link. Pass-through can be partial, and fixed-rate borrowers feel nothing until they refinance.
• Time lags. Rate changes take many months to work through.
• Type of shock. Rates control demand-pull inflation well. For cost-push inflation, higher rates cut output as well as prices.
• Limits at low rates. Further cuts do little, so asset purchases carry more weight.
• Expectations. If firms and households ignore the signal, the effect is weaker.

4. Targeting macroeconomic indicators

An inflation target means the bank judges its success by one published number. Other indicators, such as unemployment, could be targeted, with similar trade-offs.

Worked example. The price index rises from 120.0 to 124.8 in a year. Inflation = (124.8 ÷ 120.0 − 1) × 100 = 4.0%. With a target of 2.0%, the gap is 2.0 percentage points, and the bank would be expected to explain the miss.

Advantages.

• Transparent and easy to check.
• Anchors expectations. If wage bargainers expect 2.0% inflation and plan on 1.5% productivity growth, they ask for about 3.5%. If they expect 4.0%, they ask for about 5.5%, which pushes costs up.
• Rules-based policy reduces the temptation to run the economy too hot, and holds the bank accountable.

Disadvantages.

• Can ignore other objectives. A strict focus on inflation may raise unemployment after a supply shock, because a cost-push rise in prices is not caused by excess demand.
• Inflation data look backward, and policy works with a lag.
• A narrow target can overlook asset-price bubbles and financial fragility.
• A rigid target loses credibility if missed often.

5. Lender of last resort

A bank can be solvent (assets exceed liabilities) but illiquid (cannot pay depositors on demand). Banks lend long and borrow short, so lost confidence can start a run.

Worked example. A bank holds deposits of CU 800m and liquid assets of CU 120m. If 20% of depositors withdraw, withdrawals are CU 160m. The shortfall is 160 − 120 = CU 40m. Without help the bank must sell long-term assets at a loss or fail, and panic may spread.

As lender of last resort, the central bank lends against collateral. With a 10% haircut, CU 100m of collateral raises CU 90m. If it lends CU 40m for 10 days at a penalty rate of 5.5% (against a policy rate of 4.0%), the interest is 40,000,000 × 0.055 × 10 ÷ 365 = about CU 60,274.

Advantages. It stops contagion, protects depositors and the payment system, and keeps credit flowing.

Disadvantages.

• Moral hazard. Suppose a risky bet pays +CU 30m or −CU 20m with equal chance. Expected profit is 0.5 × 30 + 0.5 × (−20) = CU 5m. If the loss is limited to CU 5m by a rescue, expected profit is 0.5 × 30 + 0.5 × (−5) = CU 12.5m. Risk looks more attractive.
• Taxpayers may bear losses if collateral falls in value.
• In a crisis it is hard to tell a solvent bank from an insolvent one.

6. Independent versus controlled: effectiveness

For independence. Decisions are insulated from the election cycle, so a pre-election rate cut that lifts demand now and inflation later is less likely. Credibility lowers expected inflation.

Against independence. Officials are not elected, a democratic deficit. Monetary and fiscal policy can pull apart, and a bank focused on inflation may be slow to support growth.

For a controlled bank. Co-ordinated policy, faster crisis response and direct accountability.

Against. Short-termism, pressure to finance deficits cheaply, and weaker credibility, so expected inflation is higher.

Judgement. Better inflation outcomes under independence are plausible, but depend on institutions, accountability and a clear target.

7. Why financial institutions are regulated

• Information asymmetry. Depositors cannot check a bank’s risks.
• Externalities. One failure spreads through interbank lending (systemic risk).
• Moral hazard. Safety nets encourage risk-taking.
• Consumer protection against mis-selling and hidden charges.

8. Disadvantages of under-regulation

Worked example. Bank A has risk-weighted assets of CU 400m and capital of CU 32m, a capital ratio of 32 ÷ 400 = 8.0%. Total assets are CU 1,000m, so leverage is 1,000 ÷ 32 = 31.25 times. A loss of just 3.2% of assets (CU 32m) wipes out the capital. A CU 12m loss cuts capital to CU 20m and the ratio to 5.0%.

Under-regulation allows high leverage, risky lending, weak liquidity and opaque products. The costs are bank failures, credit crunches, bailouts and lost output.

9. How institutions can be regulated

• Capital requirements (minimum capital relative to risk-weighted assets) and leverage limits.
• Liquidity requirements (enough high-quality liquid assets to meet outflows).
• Stress tests of survival in a severe recession.
• Deposit insurance, which protects small savers and weakens the incentive to run.
• Conduct rules on disclosure, mis-selling and pay.
• Ring-fencing retail from investment banking.
• Resolution plans so a failed bank can be wound up without a bailout.

10. Regulatory change and the 2007-08 crisis

Changes that made a crisis more likely, in several advanced economies, included:

• Light-touch regulation and deregulation. Barriers between retail and investment banking were reduced, and rules lagged behind new products.
• Securitisation and shadow banking. Loans were packaged and sold, and parts of the system sat outside capital and liquidity rules.
• Reliance on ratings and models, which judged risk lower than it was.
• Weak focus on the system as a whole. Supervisors watched each firm, not risks building across all.

Worked example. A pool of mortgages of CU 500m has a junior tranche of CU 25m that absorbs the first losses. Loss on each defaulted loan is 40%.

Defaults 3%:  loss = 500 × 0.03 × 0.40 = CU 6m    (1.2% of pool; junior tranche absorbs)
Defaults 9%:  loss = 500 × 0.09 × 0.40 = CU 18m   (3.6% of pool; junior tranche absorbs)
Defaults 15%: loss = 500 × 0.15 × 0.40 = CU 30m   (6.0% of pool; junior tranche exhausted,
                                                    CU 5m spills to the next tranche)

If models assumed defaults near 3%, holders of safer tranches felt safe. When defaults rise across many pools at once, losses spread through the system.

11. Benefits and importance of regulation

Benefits. Fewer failures, more confidence, protected savers, fewer bailouts and a safer payment system.

Costs. A higher capital requirement reduces lending capacity. With CU 32m of capital, supportable risk-weighted assets are 32 ÷ 0.08 = CU 400m at 8% and 32 ÷ 0.10 = CU 320m at 10%. That is CU 80m (20%) less lending, unless the bank raises more capital. Compliance costs and regulatory arbitrage (activity moving to lightly regulated firms) also count.

Evaluation. Importance depends on the size of the financial sector, the quality of supervisors and international coordination. Fewer crises usually outweigh a modest cost in credit, but over-tight rules in a downturn can deepen a recession.

12. The IMF and the World Bank

The IMF’s three main roles are surveillance of members’ economies, lending to members with balance of payments problems, and capacity development through advice and training. The World Bank mainly provides long-term finance and advice for development projects and reform.

Contribution to regulating the system.

• They monitor risks, advise on financial rules and give technical help.
• IMF lending in a crisis can reduce panic and contagion.

Limits.

• Neither supervises individual banks. National regulators do that.
• Conditionality is criticised. Suppose Country P cuts spending so its deficit falls from 6% to 3% of a GDP of CU 100bn. That is a CU 3bn cut. With a multiplier of 1.2, GDP falls by 3 × 1.2 = CU 3.6bn, or 3.6%. Austerity can deepen a downturn.
• Voting power favours larger contributors, which raises questions of legitimacy.

Common errors

• Saying an independent bank has no government link. Often the government sets the target.
• Confusing illiquid with insolvent.
• Treating the IMF as a regulator of banks.
• Listing instruments without judging how well they work.

Official syllabus

OCR, A Level in Economics (H460) specification, Version 3.0 (June 2026), for first assessment in 2021: the financial sector, covering the role of the central bank and financial regulation.