Why New Zealand exports some goods and imports others
The question the exam asks in plain words
- Nearly every year one part reads like this: "Explain why New Zealand exports some types of fruit and imports other types", or "Explain why New Zealand grows and exports kiwifruit", or "Explain why New Zealand imports bananas".
- It is asking for one idea: countries produce and export what they are relatively good at producing, and import what they are relatively bad at producing.
Resources decide what a country produces cheaply
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Every country has a different mix of factors of production:
- Land — soil, climate, water, minerals, sea
- Labour — the size, skills and cost of the workforce
- Capital — machinery, technology, infrastructure
- Enterprise — the firms and know-how to organise the rest
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A country produces most cheaply the goods that use the resources it has most of.
New Zealand's endowment
- Temperate climate, high rainfall, fertile soil and abundant pasture → New Zealand produces dairy, meat, wool, kiwifruit, apples and wine at low cost.
- Long coastline and large exclusive economic zone → seafood.
- Extensive plantation forestry → logs and wood products.
- Spectacular landscapes and a safe reputation → tourism, which is an export of services.
- A small population (about 5 million) → the domestic market is too small to justify building cars, aircraft or advanced electronics here. Producing them in New Zealand would be very expensive per unit, because the fixed costs of a factory would be spread over tiny volumes.
Why New Zealand imports
- Climate. New Zealand cannot grow bananas, pineapples or coffee commercially at scale; producing them here would require heated glasshouses and would cost far more than buying them from a tropical country.
- Scale. Cars, machinery, aircraft and computers require enormous production runs to be cheap. Countries with huge domestic markets and established industries produce them far more cheaply than New Zealand ever could.
- Resources New Zealand lacks. Crude oil and refined fuel, most metals, and specialised chemicals.
Opportunity cost — the idea underneath
- Opportunity cost is what you give up to produce something.
- New Zealand could grow bananas under glass — but the land, labour and capital used would have to be taken away from dairying or kiwifruit, where New Zealand produces far more value per hectare.
- So the opportunity cost of growing bananas in New Zealand is very high, and the opportunity cost of growing kiwifruit is low.
- Trade lets each country specialise in what it gives up least to produce, and swap. Both countries end up with more than if each tried to produce everything.
Why New Zealand exports some fruit and imports other fruit
- This is the 2025 question, and it needs both halves:
- Exports — kiwifruit and apples suit New Zealand's temperate climate and soils, and New Zealand produces far more than 5 million people can eat. The surplus is exported.
- Imports — bananas, pineapples and citrus in the off-season need a tropical or counter-seasonal climate. New Zealand cannot supply them cheaply, so it buys them from countries that can.
- A second reason worth adding: counter-seasonality. New Zealand's harvest arrives when the northern hemisphere's is finished, which is why New Zealand fruit commands good prices in Europe, Asia and North America.
Worked ExampleExplaining a trade pattern
New Zealand exports large quantities of butter and milk powder, and imports almost all of its cars and mobile phones.
Explain why New Zealand trades in this pattern.
Step 1 — Why New Zealand exports dairy
New Zealand has a temperate climate, high rainfall and fertile, free-draining soils that grow pasture almost year-round. Dairy cows can be grass-fed outdoors for most of the year, which is far cheaper than the housed, grain-fed systems many other countries must use.
This means New Zealand produces milk at a low cost per litre and gives up very little to do it — the land is not well suited to much else of higher value. The opportunity cost of producing dairy in New Zealand is low.
New Zealand's population of about 5 million cannot consume anything like the volume produced, so the surplus is exported as butter, cheese and milk powder — New Zealand's largest export earner.
Step 2 — Why New Zealand imports cars and phones
Cars and mobile phones are produced in very large factories with enormous fixed costs in machinery, research and design. Those costs only become small per unit when millions of units are produced.
With a domestic market of 5 million people, a New Zealand car plant would produce tiny volumes, so each car would carry a huge share of the fixed costs and would be far more expensive than an imported one.
Building such an industry would also require pulling capital and skilled labour away from dairy, horticulture and tourism, where New Zealand earns far more. The opportunity cost of producing cars in New Zealand is very high.
Step 3 — Bring it together
Each country specialises where its opportunity cost is lowest and trades for the rest.
New Zealand gives up little to produce dairy and a great deal to produce cars. Large industrial economies are the reverse. Trading dairy for cars leaves both countries with more goods in total than if each tried to produce everything itself.