Money · Credit · New Zealand · Part 6
What does “we can’t afford it” actually mean?
It sounds like a financial statement. But sometimes the real constraint is not money at all.
When New Zealand debates a hospital, a road, housing, water infrastructure, a school or an energy project, one phrase appears again and again:
“We can’t afford it.”
Sometimes that may be exactly right.
But the phrase can hide several completely different problems.
Before accepting “we can’t afford it,” we should ask: which constraint are we actually talking about?
Constraint 1: the Government may not have fiscal headroom
The first possibility really is financial.
The Crown may already be running large operating deficits. Debt may be rising. Interest costs may be increasing. A new commitment may make the fiscal position less resilient.
In that case, “we can’t afford it” may mean:
we cannot add this commitment without increasing taxes, reducing other spending, borrowing more, selling assets, or accepting a weaker fiscal position.
That is a legitimate constraint.
But it should be stated precisely.
It is different from saying New Zealand literally lacks money.
Constraint 2: the project may be poor value
A country can technically finance something and still decide not to.
A project may have a weak business case, poor design, unrealistic demand forecasts, excessive construction risk or benefits too small to justify its cost.
In that situation, the issue is not national financial capacity.
It is investment quality.
Treasury's 2025 Investment Statement stresses that public investment performance depends on stronger asset management, project leadership, monitoring, evaluation and delivery capability.
Treasury — He Puna Hao Pātiki: Investment Statement 2025 ↗
So sometimes the better answer is simply:
“We could finance it, but this version is not worth financing.”
Constraint 3: inflation
Now we get to the most important distinction.
Money can be created or borrowed more quickly than an economy can create skilled workers, concrete, electricity, machinery or land.
If additional spending increases demand when the economy cannot increase supply quickly enough, prices can rise.
The Reserve Bank describes inflation in exactly these terms: when demand for goods and services outpaces supply, shortages of labour and materials can emerge and prices increase.
As at 29 August 2026, annual CPI inflation is 4.1%, above the Reserve Bank's 1% to 3% medium-term target range.
That does not mean every new public investment is inflationary.
It means the economy's available capacity matters.
Constraint 4: labour
You can approve a hospital budget today.
You cannot instantly create the people required to deliver it.
Architects.
Quantity surveyors.
Project managers.
Engineers.
Electricians.
Plumbers.
Builders.
Doctors.
Nurses.
Technicians.
If those workers are already fully occupied, a new project may simply compete with existing projects for the same people.
The result can be higher wages, delays or projects being displaced elsewhere.
Te Waihanga's national infrastructure pipeline now explicitly tracks projected workforce demand from planned initiatives across the coming decade.
Te Waihanga — Infrastructure pipeline snapshot ↗
Approving money is not the same as creating delivery capacity.
Constraint 5: materials and equipment
The same problem applies to physical inputs.
Concrete plants have limits.
Steel has to be produced or imported.
Transformers and specialist medical equipment can have long lead times.
Construction machinery is finite.
Some materials depend heavily on international supply chains and exchange rates.
So a project can be financially affordable and still face a hard supply constraint.
Constraint 6: energy
Every serious growth strategy eventually runs into energy.
New housing needs electricity.
New industry needs electricity.
Electrified transport needs electricity.
Data centres need electricity.
Hospitals and public infrastructure need reliable electricity.
If generation, transmission or distribution capacity cannot keep pace, financial expansion runs into a physical bottleneck.
That means infrastructure policy cannot be separated from energy policy.
Constraint 7: planning and consent
A country can have money, workers and materials and still fail to build.
Projects require land.
Consents.
Design work.
Procurement.
Environmental approvals.
Utility connections.
Contracting capacity.
Sequencing.
Governance.
Treasury has warned that capacity and capability to deliver public investment are stretched, including shortages of professionals able to manage the public infrastructure portfolio.
Treasury — Investment Statement 2025 ↗
That is not a monetary problem.
It is an execution problem.
Constraint 8: the economy may already be at capacity
Economists use the idea of an output gap to think about whether an economy is operating above or below its sustainable productive capacity.
If there is spare capacity — unemployed labour, idle machinery, weak demand — additional spending may be easier to absorb.
If the economy is already stretched, the same spending can create much more inflationary pressure.
The Reserve Bank's May 2026 Monetary Policy Statement estimated significant spare capacity in New Zealand, with an output gap around negative 1.5% of potential output in the June quarter.
At the same time, it warned that New Zealand's supply capacity has been growing slowly because of low investment, slow population growth and weak productivity growth.
Reserve Bank — Monetary Policy Statement May 2026 ↗
This is why national capacity cannot be described by a single number.
New Zealand can have spare labour in one part of the economy and severe shortages in another.
We can have weak consumer demand while infrastructure trades are fully booked.
We can have financial capacity but an electricity constraint.
We can have construction capacity nationally but not in the region where it is needed.
Constraint 9: imports and the exchange rate
New Zealand is not a closed economy.
We import fuel, machinery, vehicles, technology, pharmaceuticals, specialist equipment and many construction inputs.
A large investment programme can therefore increase demand for foreign goods and foreign currency.
If the New Zealand dollar falls, imported inputs become more expensive.
The Reserve Bank also notes that a lower exchange rate can add to domestic inflation pressures through more expensive imports.
Reserve Bank — July 2026 OCR decision ↗
This is another reason why the slogan “we issue our own currency” is not a complete answer to what a country can afford.
Constraint 10: political priority
Sometimes “we can't afford it” does not mean the country lacks financial or physical capacity.
It means:
we have chosen to use that capacity somewhere else.
Every government makes those choices.
A dollar of fiscal headroom used for one programme cannot simultaneously be used for another.
A construction workforce directed into one major project is unavailable to another at the same time.
Land, political attention and administrative capability are scarce too.
So priorities are unavoidable.
But priority choices should be described as choices.
“We chose not to fund it” and “the country is incapable of funding it” are not the same statement.
A better affordability test
Before rejecting a major national investment as unaffordable, I think we should identify the actual bottleneck.
Legal authority: is the expenditure authorised?
Fiscal capacity: what happens to deficits, debt and interest costs?
Investment quality: does the project create enough value?
Inflation: will additional demand exceed available supply?
Labour: do we have the people?
Materials: can we obtain the physical inputs?
Energy: can the system support the new demand?
Imports: what foreign inputs are required?
Delivery: can we consent, procure and build it?
Timing: should the project happen now, later or in stages?
Priority: what are we choosing not to do instead?
Only then does “affordable” become a useful concept.
This changes the national conversation
If the problem is debt, deal with the financing structure.
If the problem is inflation, manage demand and sequence investment.
If the problem is skills, train people.
If the problem is energy, build energy capacity.
If the problem is materials, strengthen supply chains.
If the problem is planning, reform planning.
If the problem is poor project design, redesign the project.
If the problem is political priority, say so openly.
Different constraints require different solutions.
A country cannot manage what it refuses to diagnose precisely.
So what does “we can’t afford it” actually mean?
Sometimes it means the Crown cannot responsibly take on more debt.
Sometimes it means the project is poor value.
Sometimes it means there are not enough workers, materials or energy.
Sometimes it means the economy is too close to capacity.
Sometimes it means the project is badly timed.
And sometimes it simply means the Government has chosen something else.
Those are not interchangeable explanations.
If New Zealand wants a serious conversation about national investment, we should stop using one phrase to describe ten different constraints.
Next
Now the series can move from diagnosis to design.
How should New Zealand finance major infrastructure?
Part 7 will compare the tools available: taxation, ordinary Crown borrowing, user charges, public-private partnerships, Crown entities, infrastructure bonds and other structured financing models.
The question will not be which mechanism sounds most innovative.
It will be which mechanism best matches the asset, the risk, the beneficiaries and the real capacity of the economy.
Primary sources
Reserve Bank — Monetary Policy Statement May 2026 ↗