What the Middle East Conflict Means for Business Borrowing in New Zealand

The conflict in the Middle East is generating a lot of economic commentary right now. Most of it is focused on petrol prices and household mortgages. For business owners with existing loans, or anyone planning to borrow in the next year or two, the picture is worth understanding on its own terms.

Here is what is known, what is directional, and where genuine uncertainty remains.

Where rates were heading before the conflict

To understand what has changed, it helps to know where things stood.

The Reserve Bank cut its official interest rate (the OCR) nine times between August 2024 and November 2025, dropping it from 5.50% to 2.25%. That was the biggest easing cycle in over a decade. By February 2026, the Bank held the OCR at 2.25%, saying it was confident inflation would return toward its 2% target over the coming year, while noting the economy was still in early recovery.

Before the conflict escalated, the major banks were each forecasting at least one OCR increase within 2026, with most economists pointing to something in the range of 2.50% to 2.75% by year-end. The Reserve Bank's own published forecast was more cautious, suggesting little change through 2026.

Rates were already expected to rise modestly this year, before any of this started.

What the conflict has added

The US-Israeli strikes on Iran in early March 2026 sent energy and shipping markets into a period of real uncertainty.

Brent crude prices jumped roughly 15% in the opening days of the conflict, then climbed further as markets began pricing in the risk of disruption to the Strait of Hormuz, a narrow waterway through which around 20 million barrels of oil passed every day in 2025. New Zealand gets most of its fuel from Singapore, and Asia relies heavily on Middle Eastern crude, so any sustained supply disruption flows through to our import costs regardless of whether we have a direct supply line to the Gulf.

The other mechanism worth understanding is swap rates, the wholesale rate at which banks themselves borrow money, which feeds into the fixed rates they advertise to businesses and borrowers. The two-year swap rate rose above 3.5% in mid-March, up from around 2.9% in late February. Several major banks have already responded by increasing their two to five-year fixed lending rates.

What the Reserve Bank has said

RBNZ Governor Anna Breman signalled the Bank would largely look past a temporary spike in energy prices, but warned that rates could rise if inflation risks prove more persistent. A short-lived disruption "can and should be looked through," she said, but if higher energy costs start shaping what businesses and households expect inflation to look like over the next year or two, the response would be to lift interest rates.

That distinction matters. A brief price spike is treated differently to a sustained period of elevated costs that starts changing expectations. The Reserve Bank watches the latter much more closely.

New Zealand's Ministry of Foreign Affairs and Trade has separately noted that rising energy costs could force the Reserve Bank to lift interest rates, which would in turn push up debt servicing costs for businesses.

Three scenarios for business borrowers

Forecasting is difficult right now. The current signals point to three plausible paths.

If the conflict resolves quickly

A ceasefire or de-escalation in the coming weeks would likely see energy prices ease back. The Reserve Bank holds at 2.25% or delivers one small increase later in the year. The longer-term fixed rates that banks have already moved upward stabilise or partially retrace. This is broadly the pre-war base case, with a modest upward shift.

If the conflict drags into mid-year

Oil prices stay elevated. Inflation, sitting at 3.1% in December 2025 and just above the Reserve Bank's 1 to 3% target band, gets harder to bring down. New Zealand's two-year swap rate has already jumped close to 0.6 percentage points in March alone, tracking the broader rise in global rates. In this scenario, the cost of fixed-rate business borrowing rises meaningfully over the next 12 months, particularly at the two to five-year end of the market.

If disruption extends beyond six months

Mainfreight's managing director Don Braid noted that a prolonged conflict could drive higher freight rates both internationally and domestically, with some trade routes already showing signs of stress. Sustained price increases in that environment could delay any easing of borrowing costs and tighten access to credit. This remains the lower-probability scenario, but it is not negligible, particularly for businesses with supply chains dependent on imports or Asian manufacturing.

For businesses with existing loans

For businesses currently on floating or short-term fixed rates, the OCR itself is still on hold. Shorter-term lending rates, six months or one year, are much more directly tied to the OCR and are not moving much right now. The pressure is at the longer end of the fixed-rate market, where wholesale rate movements are already feeding through.

For businesses due to refix in the next three to six months, the trade-off is real. Fixing longer provides certainty if rates continue rising, but you pay today's already-elevated rates if the conflict resolves and the market settles. Staying shorter preserves flexibility but leaves you exposed if things worsen.

The decision comes down to three things:

1. how much your cash flow depends on rate certainty
2. whether your business is in a growth or consolidation phase, and
3. how much uncertainty you can absorb without it affecting operations.

If you have not run those numbers recently, now is a reasonable time to do it.

For businesses planning to borrow

The fundamentals for acquisition finance or growth lending have not changed. The cost environment is less predictable than it was three months ago, but serviceability on new lending is assessed against higher assumed rates as standard practice. The practical question for most businesses is whether the underlying deal or expansion still stacks up if borrowing costs stay higher for longer than originally expected.

For businesses particularly exposed to energy or import costs, including transport, manufacturing, and food production, it is worth stress-testing working capital assumptions against a higher operating cost environment over the next 12 to 18 months. If the numbers still work under that scenario, the case for moving forward is reasonably sound.

The broader picture

New Zealand came into this period with a recovering but still fragile economy. Unemployment sits at 5.4%, household spending remains cautious, and the labour market is still stabilising. The Reserve Bank was already managing a careful balance between supporting recovery and keeping inflation in check.
The Middle East conflict has not rewritten the economic outlook. What it has done is compress the window of rate stability that many businesses were planning around. How significant that turns out to be depends almost entirely on how long the disruption lasts, and that remains genuinely unclear.
What it does reinforce is the value of understanding your funding structure under a range of conditions, not just the best case.

What to do right now

For most business owners, the answer is not to act urgently. It is to get clear on your position before you have to make a decision under pressure.
A few practical starting points:

• If you have a loan refixing in the next six months, find out the exact date and the rate you are currently on. Model what a 0.5% and 1% increase would mean for your monthly repayments, and decide whether your cash flow can absorb either of those comfortably.
• If you are mid-way through a fixed term, check whether breaking early makes financial sense given current rates. In most cases it will not, but it is worth knowing the numbers.
• If you are planning an acquisition or significant investment this year, revisit the deal assumptions at a higher cost of capital. Deals that only worked at 2024 interest rates deserve a second look.

If you are uncertain about any of this, the most useful thing you can do is have a conversation with someone who understands both the lending market and your specific situation, before conditions change further.

Finance Link works with New Zealand businesses on funding structure and lending strategy, at no direct cost. If you would like to talk through where your business sits, we are happy to help.

This article is general in nature and does not constitute financial advice. For guidance specific to your situation, speak with a qualified adviser.

Sources

• Reserve Bank of New Zealand, Monetary Policy Statement, February 2026 — rbnz.govt.nz
• Reserve Bank of New Zealand, OCR lowered to 2.25%, November 2025 — rbnz.govt.nz
• Opes Partners, Interest Rate Predictions 2026 and 2027, March 2026 — opespartners.co.nz
• Kalkine Media, RBNZ Interest Rate Outlook 2026, March 2026 — kalkine.co.nz
• World Economic Forum, The Global Price Tag of War in the Middle East, March 2026 — weforum.org
• NZ Herald, Middle East conflict puts upward pressure on mortgage rates, March 2026 — nzherald.co.nz
• NZ Herald, Iran conflict: Petrol prices, interest rates and KiwiSaver, March 2026 — nzherald.co.nz
• My Mortgage, How will the war in the Middle East affect my interest rates?, March 2026 — mymortgage.co.nz
• Ministry of Foreign Affairs and Trade, NZ economy not immune to conflict in the Middle East, July 2025 — mfat.govt.nz
• 1News, Willis outlines worst-case scenario for NZ if Middle East war drags on, March 2026 — 1news.co.nz
• Reuters via US News, Analysis: New Zealand struggles to regain economic mojo, March 2026 — usnews.com
• Trading Economics, New Zealand Interest Rate — tradingeconomics.com