Section 2.3.1Unit 2: Macroeconomic Performance & Policy
Unit 2: Macroeconomic Performance & Policy
Measures of Economic Performance
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GDP measures the total value of all goods and services produced within a country's borders in a given time period, making it the headline indicator of economic size.
Gross Domestic Product (GDP) is the total monetary value of all final goods and services produced within a country's borders in a given time period, usually a year or a quarter. It only counts final output to avoid double counting -- the value of steel used to make a car is already included in the car's price, so you do not count the steel separately.
GDP is "domestic" because it counts production that happens inside the country regardless of who owns the factors of production. A Japanese-owned car factory in the UK adds to UK GDP, not Japanese GDP. This distinguishes GDP from GNI (Gross National Income), which counts income earned by a country's citizens wherever they work.
Real Example: The UK's GDP was approximately $3.1 trillion in 2023, making it the sixth-largest economy in the world. This figure includes output from foreign-owned firms such as Nissan's Sunderland plant, because the production happens on British soil. GNI would instead count income earned by British citizens abroad.
Exam Matters: Examiners expect a precise definition that includes "total value of final goods and services," "within a country's borders," and "in a given time period." Missing any element loses marks. Always clarify the difference between GDP and GNI if the question allows.
Nominal GDP uses current prices and can rise just from inflation, while real GDP strips out price changes so you can see whether actual output has grown.
Nominal GDP (also called money GDP) measures output valued at the prices of the current year. The problem is that if all prices double but output stays the same, nominal GDP doubles even though the economy has not grown. This makes nominal GDP a misleading measure of living standards.
Real GDP solves this by valuing output at the prices of a base year, stripping out the effect of inflation. If nominal GDP grows by 7% but inflation is 3%, real GDP growth is approximately 4%. You should always use real GDP when comparing economic performance over time, because it shows the genuine change in the volume of output.
Real Example: Turkey's nominal GDP grew by over 100% in local currency terms between 2020 and 2023. However, inflation averaged above 50% per year over that period, so real GDP growth was far more modest. This shows why economists insist on using real GDP to judge genuine economic expansion.
Exam Matters: If a data-response question gives GDP figures, always check whether they are real or nominal. If only nominal figures are given alongside inflation data, you should adjust for inflation to discuss real growth. Examiners reward candidates who identify this distinction unprompted.
Dividing GDP by the population gives GDP per capita, which is a better indicator of average living standards than total GDP alone.
GDP per capita is calculated by dividing total GDP by the population: GDP per capita = GDP / Population. A country can have a very large total GDP but a low GDP per capita if its population is huge. China's total GDP is the second largest in the world, but its GDP per capita is far below that of smaller economies like Norway or Switzerland.
GDP per capita gives you a rough proxy for average living standards, but it hides income inequality. If GDP per capita rises because the richest 1% earn dramatically more while everyone else stagnates, the average figure improves but most people are no better off. You should always consider the distribution of income alongside GDP per capita.
Real Example: India has the fifth-largest total GDP in the world at over $3.7 trillion, yet its GDP per capita is only about $2,500, ranking it well below the global average. This gap between total and per-capita GDP reflects a population of 1.4 billion people. It illustrates why total GDP alone is a poor measure of individual prosperity.
Exam Matters: Examiners often present GDP and population data and expect you to calculate and interpret GDP per capita. Always show your working and then evaluate the figure by noting limitations such as inequality, purchasing power differences, and the exclusion of non-market activity.
The output method adds up the value added by every industry in the economy, avoiding double counting by only measuring each firm's contribution.
The output method calculates GDP by summing the value added at each stage of production across every industry. Value added is the difference between a firm's revenue and the cost of its intermediate inputs. If a baker buys flour for $2 and sells bread for $5, the value added is $3.
By using value added rather than total sales at each stage, you avoid double counting. If you simply added $1 + $2 + $5 (total sales at each stage), you would get $8 instead of the true $5. The output method is particularly useful for showing which sectors contribute most to the economy.
Real Example: The UK's Office for National Statistics uses the output method to show that services account for around 80% of British GDP, while manufacturing contributes roughly 10%. This breakdown would be impossible without the value-added approach, because raw sales figures would inflate the manufacturing share through double counting.
Exam Matters: If the exam gives a production chain with values at each stage, you must calculate value added at each stage rather than summing total outputs. Show clearly that you subtract intermediate inputs. Examiners specifically test whether you can avoid double counting.
The income method sums all factor incomes earned in production -- wages, profits, rent and interest -- because every pound of output generates a pound of income for someone.
The income method adds up all the incomes earned by the factors of production in a given time period. When a good is produced and sold, the revenue becomes income for someone: wages for labour, profits for entrepreneurs, rent for land, and interest for capital. The total of these factor incomes should equal GDP.
You only count incomes earned from productive activity -- not transfer payments like pensions or benefits, because these are redistributions of existing income, not rewards for producing output. The income method is useful for analysing how national income is distributed between wages and profits.
Real Example: The US Bureau of Economic Analysis uses the income method to show that employee compensation accounts for roughly 53% of US GDP, while corporate profits make up about 12%. This data helps economists track whether the gains from growth are flowing to workers or to capital owners.
Exam Matters: Examiners test whether you can identify which incomes to include and exclude. Remember to exclude transfer payments and include only incomes earned from current production. If data is provided, separate factor incomes from non-factor incomes before calculating.
The expenditure method adds up all spending on final goods and services: consumption, investment, government spending and net exports.
The expenditure method calculates GDP by summing all spending on final output: C (household consumption) + I (investment by firms) + G (government spending on goods and services) + (X - M) (net exports, which is exports minus imports). This is the most commonly referenced formula: GDP = C + I + G + (X - M).
Imports are subtracted because they represent spending on goods produced abroad, which does not count as domestic output. Only final expenditure is counted -- spending on intermediate goods is excluded to avoid double counting. The expenditure method directly links to the aggregate demand formula you will study later.
Real Example: In the United States, consumption (C) accounts for roughly 68% of GDP, making it by far the largest component. Government spending (G) is about 17%, investment (I) around 18%, and net exports (X-M) are negative because the US imports more than it exports. This composition explains why consumer confidence is so closely watched.
Exam Matters: The expenditure formula GDP = C + I + G + (X - M) appears repeatedly in Unit 2. Examiners expect you to know each component and explain why imports are subtracted. Be ready to calculate GDP from component data and to link each component to aggregate demand.
GDP data lets governments track growth, compare economies, set policy targets and measure progress -- but only if you understand what it does and does not capture.
Governments use GDP data to measure economic growth, defined as an increase in real GDP over time. Positive growth usually signals rising employment, higher tax revenues and improving living standards. Negative growth for two consecutive quarters is the technical definition of a recession.
GDP also allows international comparisons. To compare countries fairly, economists convert GDP into a common currency (usually US dollars) and adjust for differences in price levels using Purchasing Power Parity (PPP). Without PPP adjustment, you understate the real output of countries where prices are low.
Real Example: China's GDP measured at market exchange rates is about $18 trillion, but adjusted for PPP it exceeds $30 trillion because domestic prices in China are much lower than in the US. The PPP figure better reflects China's actual purchasing power. This is why the IMF publishes both measures.
Exam Matters: When evaluating GDP as a measure of living standards, examiners want you to state its uses first and then systematically discuss limitations. Structuring your answer as "useful because... but limited because..." with specific examples earns high evaluation marks.
GDP ignores the informal economy, environmental damage, income distribution and non-market activity, so it can paint a misleading picture of wellbeing.
GDP misses the informal economy (cash-in-hand work, subsistence farming) and non-market activity (unpaid housework, volunteering). In developing countries, the informal sector can be 30-60% of true economic activity, meaning GDP figures significantly understate actual output.
These limitations mean GDP should never be used as the sole indicator of a nation's wellbeing. Economists supplement GDP with alternative measures like the Human Development Index (HDI), which combines GDP per capita with life expectancy and education indicators.
Real Example: Bhutan pioneered Gross National Happiness as an alternative to GDP, arguing that environmental conservation, cultural preservation and good governance matter as much as output. Bhutan's GDP per capita is low, but its citizens report high life satisfaction. This challenges the assumption that GDP growth equals progress.
Exam Matters: A common 8-mark question asks you to evaluate GDP as a measure of living standards. Structure your answer by acknowledging its value, then presenting at least three specific limitations with examples. Conclude by suggesting supplementary measures like HDI for a balanced evaluation.
The HDI combines GDP per capita with health and education data, giving a broader picture of development than income alone can provide.
The Human Development Index (HDI) was created by the United Nations to measure development using three dimensions: income (GNI per capita at PPP), health (life expectancy at birth), and education (mean years of schooling and expected years of schooling). Each dimension is scored from 0 to 1, and the HDI is the geometric mean of the three scores.
The HDI reveals cases where high income does not translate into high development. Some oil-rich nations have very high GDP per capita but lower HDI scores because education and healthcare lag behind. Conversely, countries like Cuba and Sri Lanka score relatively well on HDI despite modest incomes because they invest heavily in health and education.
Real Example: Norway consistently tops the HDI rankings with a score above 0.96, reflecting high GNI per capita, a life expectancy of 83 years, and an average of 13 years of schooling. By contrast, Qatar has higher GDP per capita than Norway but a lower HDI score. This shows that income alone does not capture development.
Exam Matters: Examiners love comparing GDP and HDI. State what HDI adds (health, education) and then evaluate it by noting what it still misses (inequality, environment, freedom). Naming the three HDI components precisely is essential for full marks on definition questions.
The CPI tracks the cost of a weighted basket of goods and services that a typical household buys, giving each item a weight based on its share of spending.
The Consumer Price Index (CPI) measures changes in the average price level faced by consumers. Statisticians construct a basket of goods and services representing what a typical household buys -- food, housing, transport, clothing and so on. Each item is given a weight reflecting its share of total household spending.
The basket is updated annually to reflect changing spending habits. For example, streaming services were added to the UK basket in recent years as DVD rentals were removed. A base year is set at 100, and subsequent CPI values show the percentage change in prices relative to that base.
Real Example: The UK's ONS added oat milk and electric vehicle charging to the CPI basket in 2024, while removing coal. These changes reflect evolving consumer behaviour -- households spend more on plant-based alternatives and less on solid fuels. This annual update keeps the CPI relevant.
Exam Matters: Examiners frequently ask how the CPI is constructed. You must mention the basket, the weights based on spending shares, the monthly price collection and the base year. Simply saying "it measures inflation" without explaining the process earns very few marks.
The RPI includes mortgage interest payments and uses a different averaging method, which is why it usually gives a higher inflation figure than the CPI.
The UK uses two main price indices. The CPI is the official measure used by the Bank of England for its 2% inflation target. The Retail Price Index (RPI) is an older measure that includes mortgage interest payments and council tax, which the CPI excludes.
The RPI also uses a different mathematical formula (the arithmetic mean) compared to the CPI's geometric mean. This formula effect means the RPI tends to produce a higher inflation figure than the CPI, typically by 0.5 to 1 percentage point. The government has announced that the RPI will be reformed to align with the CPI in 2030.
Real Example: UK rail companies use the RPI to set annual fare increases, which is why commuters often face rises above the CPI inflation rate. In 2023, RPI was 1.2 percentage points higher than CPI, costing the average season-ticket holder an extra $80 per year. Calls to switch to CPI have been resisted by the Treasury.
Exam Matters: When discussing inflation measurement, examiners want you to explain why different indices give different figures. Mention the basket composition difference (housing costs) and the formula effect. Knowing that CPIH is now the ONS headline measure shows up-to-date knowledge.
Inflation is the sustained rise in the general price level over time, measured as the annual percentage change in the CPI from one year to the next.
Inflation is a sustained increase in the general price level in an economy over a period of time. It is measured as the annual percentage change in the CPI. If the CPI was 110 last year and is 112.2 this year, inflation is (112.2 - 110) / 110 x 100 = 2%.
You must distinguish between the price level and the rate of inflation. If inflation falls from 6% to 3%, prices are still rising -- just more slowly. This is called disinflation, not deflation. Prices only fall when inflation becomes negative, which is true deflation.
Real Example: The Bank of England targets CPI inflation of 2% per year. In late 2022, UK CPI inflation peaked at 11.1%, the highest in 41 years, driven by energy and food prices. By early 2024, it had fallen to around 4% -- this was disinflation, not deflation, because prices were still rising.
Exam Matters: Examiners test the distinction between disinflation and deflation regularly. If a question says "the rate of inflation fell," do not describe it as deflation unless the rate turned negative. Precise use of these terms is essential for demonstrating strong economic literacy.
When aggregate demand grows faster than the economy's capacity to produce, excess demand pulls prices upward -- too much money chasing too few goods.
Demand-pull inflation occurs when aggregate demand (AD) increases faster than aggregate supply (AS) can respond. If the economy is near full capacity and AD shifts right, firms cannot easily expand output, so they raise prices instead. This is often summarised as "too much money chasing too few goods."
Demand-pull inflation is most likely when the economy is in a boom phase with low unemployment and high consumer confidence. Causes include excessive government spending, consumer credit expansion, tax cuts, rising asset prices and a weakening currency that boosts export demand.
Real Example: The US government distributed over $800 billion in stimulus cheques during 2020-2021 while supply chains were still disrupted. Household spending surged but firms could not meet demand, pushing US CPI inflation to 9.1% by June 2022. This was a textbook case of demand-pull inflation.
Exam Matters: When explaining demand-pull inflation on a diagram, shift the AD curve to the right along a steep section of the AS curve. Show that the price level rises more than real output. Examiners want you to link the cause (e.g. fiscal stimulus) to the AD shift and then to the inflationary outcome.
When firms face rising production costs they pass them on as higher prices, pushing up the general price level even without any increase in demand.
Cost-push inflation occurs when the costs of production rise, causing firms to increase their prices to maintain profit margins. This shifts the short-run aggregate supply (SRAS) curve to the left, reducing output while raising the price level. Unlike demand-pull inflation, cost-push inflation can occur even when the economy is below full capacity.
Common causes include rising commodity prices (especially oil), wage increases that outstrip productivity growth, a depreciation of the exchange rate (making imports more expensive), and higher indirect taxes. Cost-push inflation is particularly harmful because it can create stagflation -- rising prices combined with falling output and rising unemployment.
Real Example: The 1973 OPEC oil embargo quadrupled oil prices in months, dramatically increasing production costs across every sector of Western economies. The UK experienced inflation above 20% combined with rising unemployment -- a clear case of stagflation caused by cost-push forces. This event ended the belief that inflation and unemployment could not rise simultaneously.
Exam Matters: On a diagram, show cost-push inflation as a leftward shift of the SRAS curve. The price level rises while real GDP falls -- this simultaneous outcome is what makes cost-push inflation so problematic. Always name the specific cost increase causing the shift.
Inflation redistributes purchasing power from savers and fixed-income earners to borrowers and asset owners, creating winners and losers throughout the economy.
Inflation erodes the purchasing power of money -- each pound buys fewer goods and services. Savers lose out because the real value of their savings falls if interest rates do not keep pace with inflation. People on fixed incomes (such as pensioners with fixed annuities) see their real income decline as prices rise around them.
High and unpredictable inflation also harms international competitiveness. If UK prices rise faster than those of trading partners, British exports become relatively more expensive, worsening the trade balance. Firms also face menu costs (reprinting price lists) and shoe-leather costs (time spent minimising cash holdings).
Real Example: UK mortgage holders with fixed-rate deals taken out before 2022 effectively saw the real value of their debt fall as inflation surged above 10%. A mortgage of $200,000 lost significant real value in just two years. Meanwhile, savers with cash ISAs earning 1% suffered a real loss of around 9% per year.
Exam Matters: Questions on the effects of inflation expect you to distinguish between different stakeholders. Structure your answer around winners (borrowers, asset owners) and losers (savers, fixed-income earners, exporters). Always specify whether you are discussing high or moderate inflation, as the effects differ.
Deflation can be caused by falling aggregate demand (bad deflation) or by rising productivity and supply improvements (good deflation), and the distinction matters enormously.
Deflation is a sustained fall in the general price level, meaning the inflation rate is negative. There are two distinct causes. Demand-side deflation (bad deflation) happens when aggregate demand collapses -- consumers stop spending, firms cut prices to clear stock, and a vicious cycle of falling output and employment begins.
Supply-side deflation (good deflation) happens when improvements in technology or productivity reduce costs, allowing firms to cut prices while maintaining or increasing output. This type benefits consumers without causing unemployment.
Real Example: Japan experienced demand-side deflation for much of the 1990s and 2000s after its asset bubble burst in 1991. Consumers delayed purchases expecting lower prices, firms cut wages, and banks restricted lending. This "Lost Decade" demonstrated how demand-side deflation can trap an economy in stagnation.
Exam Matters: Examiners expect you to distinguish between demand-side and supply-side deflation. If a question asks whether deflation is harmful, your evaluation should depend on the cause. A strong answer considers both types and reaches a reasoned judgement based on context.
In a deflationary spiral, falling prices cause consumers to delay spending, which reduces demand further, causing more price falls in a self-reinforcing downward cycle.
A deflationary spiral is the most dangerous consequence of demand-side deflation. When prices fall, consumers delay purchases because they expect goods to be even cheaper in the future. This reduces aggregate demand, forcing firms to cut prices further, reduce output and lay off workers.
The spiral is worsened by rising real debt burdens. If you owe $100,000 and prices are falling, the real value of your debt increases because your income falls while the debt stays fixed. Borrowers struggle to repay, banks face defaults, and credit dries up -- further reducing spending. This is why central banks fight deflation aggressively.
Real Example: The US Great Depression of the 1930s saw prices fall by about 25% over four years. Consumers hoarded cash, businesses slashed prices and wages, and real debt burdens soared. The deflationary spiral was only broken when the government intervened with massive fiscal stimulus under the New Deal.
Exam Matters: When explaining the deflationary spiral, examiners want a clear chain of reasoning showing how each stage feeds into the next. Draw the circular process: falling prices lead to delayed spending, which leads to lower demand, which leads to further price falls. Mentioning rising real debt burdens shows advanced understanding.
Deflation increases the real burden of debt, may render monetary policy ineffective through the liquidity trap, and reduces business confidence and investment.
The most damaging consequence of deflation is the increase in real debt. When prices fall, the money you owe buys more goods than before, making debt relatively harder to repay. Firms and households cut spending to service their debts, further reducing aggregate demand.
Deflation can also trigger a liquidity trap, where central banks have already cut interest rates to near zero but cannot cut them further to stimulate borrowing and spending. Conventional monetary policy becomes ineffective. This is why central banks may resort to quantitative easing (QE) -- buying government bonds to inject money directly into the economy.
Real Example: The Bank of Japan cut interest rates to zero in 1999 and kept them there for over two decades, yet deflation persisted. Unable to cut rates further, the BOJ launched massive quantitative easing programmes, eventually buying government bonds worth over 100% of GDP. This demonstrated the limitations of monetary policy during deflation.
Exam Matters: Questions on deflation often require you to explain why it is difficult to escape once it begins. Link the deflationary spiral to the liquidity trap and explain why monetary policy may be ineffective. Discussing QE as a policy response demonstrates strong analytical depth.
Unemployment is measured by the claimant count (people claiming benefits) and the Labour Force Survey (people actively seeking work), and each method has strengths and weaknesses.
There are two main measures of unemployment in the UK. The claimant count records the number of people claiming unemployment-related benefits (mainly Jobseeker's Allowance or Universal Credit). The Labour Force Survey (LFS) is a quarterly survey that classifies people aged 16+ as employed, unemployed or economically inactive using ILO definitions.
Under the ILO definition, someone is unemployed if they are without a job, actively seeking work, and available to start within two weeks. The LFS is internationally comparable, whereas the claimant count depends on each country's benefit rules. The claimant count tends to understate true unemployment because not everyone who is jobless claims benefits.
Real Example: During the UK's furlough scheme in 2020-2021, the claimant count surged by 1.6 million, but many claimants were technically employed (just on reduced pay). The LFS showed a smaller unemployment rise because furloughed workers were classified as employed. This highlighted how each measure captures a different dimension of the labour market.
Exam Matters: Examiners expect you to know both measures and their limitations. A strong answer explains why the claimant count may understate or overstate true unemployment and why the LFS has sampling limitations. Mentioning hidden unemployment and underemployment demonstrates evaluative depth.
Unemployment has four types by cause: frictional (between jobs), structural (skills mismatch), cyclical (demand deficiency) and seasonal — each needing different policies.
Frictional unemployment is short-term unemployment that occurs when workers are between jobs. It exists even in a healthy economy because it takes time to search for and match with a new role. Better job market information and recruitment platforms reduce frictional unemployment.
Structural unemployment occurs when there is a mismatch between workers' skills and the skills employers need, or when jobs are in a different region from the workers. It often results from long-term changes like deindustrialisation or automation. Structural unemployment can last for years and requires retraining or relocation policies.
Real Example: The closure of coal mines across Northern England and Wales in the 1980s created mass structural unemployment. Former miners lacked the skills for the growing service sector jobs concentrated in London and the South East. Decades later, some former mining communities still have higher-than-average unemployment, showing how persistent structural unemployment can be.
Exam Matters: Examiners want you to identify the type of unemployment from the context given and recommend appropriate policies. If a question describes a recession, the unemployment is cyclical. If it describes technological change making skills obsolete, it is structural. Matching the type to the correct policy is essential.
Demand-side policies like fiscal stimulus tackle cyclical unemployment, while supply-side policies like education and training address structural unemployment.
Cyclical unemployment is caused by insufficient aggregate demand during a downturn. The government can tackle it using demand-side policies: expansionary fiscal policy (higher government spending or tax cuts) and expansionary monetary policy (lower interest rates or quantitative easing) to boost AD and create jobs.
Structural unemployment requires supply-side policies: investment in education and retraining to update workers' skills, improved geographical mobility through housing and transport policies, and better occupational mobility through apprenticeships and certification programmes. These policies take longer to work but address the root cause.
Real Example: The UK's Kickstart scheme (2020-2022) subsidised six-month work placements for 16-24 year olds on Universal Credit. It combined demand-side stimulus (government funding) with supply-side elements (work experience and skills development). The scheme created over 160,000 placements, targeting both cyclical and structural youth unemployment.
Exam Matters: Essay questions on unemployment policies require you to match the policy to the type of unemployment. Examiners penalise generic answers. State the type of unemployment, explain why it exists, and then evaluate whether demand-side or supply-side policies are more appropriate given the context.
The current account records trade in goods, trade in services, primary income (investment returns) and secondary income (transfers) between a country and the rest of the world.
The balance of payments is a record of all financial transactions between a country and the rest of the world. The current account is the most closely watched section, and it has four components: trade in goods, trade in services, primary income and secondary income.
The current account balance is the sum of all four components. If the total is negative, the country has a current account deficit -- it is spending more abroad than it earns from abroad. If positive, it has a current account surplus.
Real Example: The UK runs a persistent current account deficit, driven by a large trade in goods deficit (the UK imports more manufactured goods than it exports). However, the UK runs a surplus on trade in services thanks to its strong financial and professional services sector. The net effect is still a deficit because the goods gap outweighs the services surplus.
Exam Matters: Examiners regularly ask you to explain the components of the current account. You must name and briefly define all four components. If data is provided, show that you can calculate the overall balance by summing the individual balances. Forgetting primary and secondary income is a common way to lose marks.
A current account deficit means a country spends more abroad than it earns, which must be financed by capital inflows -- attracting foreign investment or borrowing from overseas.
A current account deficit occurs when the total outflow on the current account exceeds the total inflow. In simple terms, the country is importing more value than it is exporting (including services and investment income). The deficit must be financed through the financial account -- typically by attracting foreign direct investment, portfolio investment or borrowing.
Whether a deficit is a problem depends on its cause and duration. A deficit caused by importing capital goods for investment may boost future productivity. A deficit caused by excessive consumer spending on imports may be unsustainable. A persistent deficit can lead to currency depreciation, higher external debt, and reduced investor confidence.
Real Example: The United States has run a current account deficit every year since 1982, reaching over $800 billion in 2022. This is financed by huge capital inflows -- foreign investors buy US Treasury bonds, shares and property. The US can sustain this because the dollar is the world's reserve currency, but most countries could not run such large deficits indefinitely.
Exam Matters: Evaluation is key here. Examiners want you to argue both sides: a deficit can signal strong domestic demand and productive investment, or it can signal a loss of competitiveness and unsustainable borrowing. The quality of your judgement determines your marks.
A current account surplus means a country earns more from abroad than it spends, often reflecting strong exports but potentially signalling weak domestic demand.
A current account surplus occurs when a country's export earnings (goods, services, income) exceed its spending on imports. The surplus funds are typically invested abroad through the financial account. Countries with persistent surpluses are net creditors to the rest of the world.
A surplus is not automatically good. It may indicate that domestic demand is too weak -- consumers are not spending enough, so output is exported instead. It can also cause upward pressure on the exchange rate, making exports less competitive over time. Very large surpluses can create tension with trading partners who accuse the surplus country of manipulating its currency.
Real Example: Germany has run one of the world's largest current account surpluses for over a decade, exceeding $250 billion in some years. Critics argue this reflects weak domestic consumption and an undervalued euro for Germany's productivity level. The European Commission has repeatedly urged Germany to boost domestic spending to help rebalance the eurozone economy.
Exam Matters: Examiners often present data showing both deficit and surplus countries and ask you to evaluate. Avoid the assumption that surpluses are good and deficits are bad. The strongest answers evaluate the causes, sustainability and wider economic implications of both positions.
GDP measures the total value of all goods and services produced within a country's borders in a given time period, making it the headline indicator of economic size.
Nominal GDP uses current prices and can rise just from inflation, while real GDP strips out price changes so you can see whether actual output has grown.