NZDUSD Correlation: Which Pairs Move With the Kiwi, and How to Avoid Doubling Your Risk

What moves NZDUSD

NZDUSD is the price of one New Zealand dollar (the kiwi) in US dollars. Two forces drive it. The first is the US dollar itself: when the dollar weakens against everything, NZDUSD rises together with EURUSD, GBPUSD and AUDUSD, and USDCHF, USDCAD and USDJPY fall. That shared dollar leg is why the correlation coefficient between NZDUSD and the other dollar pairs is usually strong.

The second force is New Zealand. The Reserve Bank of New Zealand sets the Official Cash Rate (OCR) eight times a year, and its past monetary policy decisions page shows it raised the OCR from 2.25% to 2.5% on July 8, 2026 and to 2.75% on September 2, 2026. New Zealand is also a large exporter of goods, tracked by Stats NZ imports and exports, and many traders watch the Global Dairy Trade auction results for that reason. A day driven by any of these is a kiwi day, and on kiwi days NZDUSD moves on its own.

A coefficient of +1 means the daily moves always line up, 0 means no linear link and -1 means they always move in opposite directions. Over the last three months, NZDUSD and AUDUSD closed in the same direction on 49 of 66 ECB fixing days (74%), and NZDUSD and USDCHF moved in opposite directions on 45 of 66 (68%).

NZDUSD correlation table: every major pair

The inputs are ECB euro reference rates (see the ECB reference rates page) loaded through the Frankfurter exchange rate API, converted to dollar pairs and compared as daily percentage returns. All windows end on October 23, 2026.

How to read it in practice:

• Above about 0.7: a long in the other pair largely repeats your NZDUSD long. That is GBPUSD and EURUSD on every window, and AUDUSD on six months and one year. Check them on the GBPUSD vs NZDUSD and EURUSD vs NZDUSD pages.
• Below about -0.7: a long in the other pair mostly offsets your NZDUSD long, and a short repeats it. That is USDCHF and USDCAD over three months. See NZDUSD vs USDCHF and NZDUSD vs USDCAD.
• Between about -0.4 and 0.4: treat the pairs as mostly separate markets. USDJPY sits near that edge at -0.40 over three months (see NZDUSD vs USDJPY), because the yen has strong drivers of its own.

Is AUDUSD still the closest pair to NZDUSD?

Over one year, yes: 0.80, the highest reading in the table. Australia and New Zealand are neighbors with commodity linked currencies, and the AUDUSD vs EURUSD comparison found NZDUSD was AUDUSD's closest major too. But over the last three months, GBPUSD (0.74) and EURUSD (0.72) were both closer to NZDUSD than AUDUSD (0.66). Recent NZDUSD trading has followed the broad dollar more than the Aussie.

The AUDNZD row says the same thing from another angle. AUDNZD rises when the Aussie beats the kiwi. Its -0.50 reading over three months means that when NZDUSD rose, the Aussie often rose less, so the gap between the two currencies did a lot of the moving.

When the NZDUSD and AUDUSD link weakens

Sampled about once a month on rolling three month windows, the NZDUSD and AUDUSD correlation stayed between 0.83 and 0.87 from January to June 2026, then slid to 0.66 by October 20.

The slide began in the same months as the two RBNZ hikes in July and September. That timing does not prove the cause, but it fits the pattern: the link tends to weaken when one country has its own story (a central bank move, local data, export prices) and strengthen when the US dollar is the story, such as on US inflation, jobs or Federal Reserve FOMC days. The largest NZDUSD fix to fix move of the year, 134.8 pips between April 7 and April 8, 2026, came on the same day as EURUSD's largest move, a clear dollar day.

How much risk you stack with two kiwi trades

Say you hold NZDUSD and one other pair, each sized to risk 1% of your account. If both stops are hit you lose 2%, whatever the correlation. What correlation changes is how often the two win and lose together. For two equal positions, the combined swing grows with the square root of 2 + 2 × correlation, in units of one position's risk:

A NZDUSD long next to a GBPUSD long, or next to a USDCHF short, behaves close to one 2% dollar bet. Buying NZDUSD and USDCHF together does the opposite: the two mostly cancel, so you pay two spreads for a small net position. The rule of thumb: one view, one risk budget. The guide to using currency correlation in forex explains the same math with more pairs.

Sizing NZDUSD from one risk budget

The US dollar is the quote currency, so NZDUSD pays $10 per pip on 1.0 lot, $1 on 0.10 lot and $0.10 on 0.01 lot, whatever the rate. The formula is lots = risk money ÷ (stop in pips × $10). Here are lots at 1% risk, with a 20 pip stop (close to the 19.6 pip average daily move) and a 40 pip stop:

Now the two pair case. With a $10,000 account and one 1% budget of $100, a NZDUSD long with a 25 pip stop and an AUDUSD long with a 30 pip stop:

Lots are rounded down to the 0.01 step, so the dollar risk never goes above plan. Run your own numbers in the NZDUSD lot size calculator or the position size calculator. For accounts that are not in dollars, see how to calculate lot size in forex.

Using correlation to read a NZDUSD breakout

When NZDUSD closes above a clear resistance line, look at AUDUSD, EURUSD and USDCHF on the same timeframe before you buy:

• EURUSD and AUDUSD breaking out, USDCHF breaking down: it is a dollar move. You have one idea on several charts, so pick the cleanest one or split one risk budget.
• Only NZDUSD moving: it is a kiwi move, often around an RBNZ decision or New Zealand data. It can be a good trade, but the other charts will not confirm or hedge it.
• AUDNZD falling hard at the same time: the kiwi is outperforming the Aussie, so AUDUSD is the weaker way to express the same view.

None of this makes a breakout more likely to work. It tells you what you are actually betting on. Check the payoff with the risk reward calculator before you size, and see how oil changes a neighboring dollar pair in our USDCAD and oil correlation article.

A five step NZDUSD correlation check

1. Open the forex correlation matrix and read NZDUSD on the 1M and 3M tabs, not only 1Y.
2. List every open trade with a reading above 0.7 or below -0.7 against NZDUSD.
3. Decide whether your idea is about the US dollar or about New Zealand.
4. If it is a dollar idea, give all the related trades one risk budget and split it.
5. Size each leg from its own stop at $10 per pip per 1.0 lot, and check the RBNZ calendar before holding through a decision.