Markets
Oil Prices and Commodity Currencies: CAD, NOK and Beyond
How oil prices relate to commodity currencies: Brent vs WTI, why CAD and NOK co-move with oil, terms of trade, and why the relationship sometimes breaks down.
Some currencies tend to rise and fall with the price of the commodities their countries export. For oil, the standard examples are the Canadian dollar and the Norwegian krone. The link is real and grounded in economics, but it is looser and less stable than chart comparisons suggest. This guide explains where the relationship comes from, what the research says, and why it can disappear for long stretches.
Brent and WTI
Two benchmarks dominate oil pricing. According to the EIA, Brent is the most widely used global benchmark, built on light, sweet crude streams produced in the North Sea, and is used to price crude from Europe, Africa, the Mediterranean, Asia and Australia. Since June 2023, the price reporting agency Platts has also included US WTI Midland crude in its Dated Brent assessment, the first grade from outside the North Sea in the benchmark.
West Texas Intermediate (WTI) is a light, sweet US crude priced at the trading hub of Cushing, Oklahoma, which is the delivery point for the main US futures contract. WTI serves as the benchmark for crude produced in the United States and for imports from Canada, Mexico and South America.
The two usually move together, but the spread between them changes with transport costs, US pipeline capacity and regional supply. For currency analysis, Brent is the natural reference for Norway, several of whose North Sea grades sit in the Brent basket. Most Canadian crude exports go to the United States, so North American prices are the more direct reference for Canada.
Why some currencies move with oil
The economic channel is the terms of trade: the price of a country's exports relative to the price of its imports. When oil rises, an oil exporter earns more foreign currency for the same volume of exports. That raises national income, can increase investment in the energy sector and improves government revenue. Exporters converting their earnings into the home currency, and investors buying into the stronger outlook, both add demand for it.
Research supports the link, with caveats. Chen and Rogoff, in a paper published in the Journal of International Economics in 2003, found that for Australia and New Zealand in particular, the US dollar price of commodity exports had a strong and stable influence on their real exchange rates. Ferraro, Rogoff and Rossi, writing in the Journal of International Money and Finance in 2015, found a short-term relationship at the daily frequency between oil price changes and the Canadian dollar. That relationship held for same-day price changes. When they used past oil price changes to predict the exchange rate, the predictive ability was "ephemeral".
That distinction matters. A currency moving with oil on the same day is not the same as oil telling you where the currency will go next.
Canada
Energy is a large part of Canada's export base. The Canada Energy Regulator reported that exports of crude oil, refined products, natural gas and natural gas liquids to the United States made up 21.7% of Canada's total goods exports in 2024, and that Canada supplied 61.7% of US crude oil imports that year.
Yet the oil link explains less than its share of exports suggests. A Bank of Canada staff analytical note by Fontaine and Nolin found that the Canadian dollar's sensitivity to oil prices roughly tripled between 2007 and 2015, but that only a small share of the currency's 2014–15 depreciation could be attributed to oil. Broad movements of the US dollar against all currencies were the bigger driver, even though oil prices collapsed over the same period.
Norway
Norway is more dependent on hydrocarbons. According to the government's Norwegian Petroleum site, crude oil and natural gas made up 57% of the value of Norway's goods exports in 2025.
Norway also has a structural feature that weakens the link between oil revenue and the krone. Much of the state's petroleum revenue is saved in foreign currency in the Government Pension Fund Global rather than converted into kroner. Norges Bank carries out the foreign exchange transactions between the government's petroleum revenue and its budget and announces the amounts in advance each month. Keeping much of the oil windfall invested abroad, rather than spent at home, limits how strongly it feeds through to the krone. Interest rate differentials, global risk appetite and liquidity in a small currency all matter alongside oil.
Other exporters
Most Gulf producers peg their currencies to the US dollar, so oil price swings show up in their reserves and budgets rather than their exchange rates. Floating currencies of other oil-exporting countries can show the same pull as CAD and NOK, but their exchange rates are often shaped as much by capital controls, managed regimes, sanctions, inflation or a more diversified export base. The relationship there is usually weaker and harder to isolate.
When the relationship breaks down
The oil-currency link fails often enough that it should be treated as conditional:
- Dollar moves dominate. When the US dollar rises or falls against everything, as in the Bank of Canada example, the oil signal gets swamped.
- Interest rates diverge. A central bank raising or cutting rates faster than its peers can push a currency against the oil price.
- The type of oil shock matters. Oil rising because of strong global demand tends to support commodity currencies alongside other risk assets. Oil rising because supply is cut off, as during the 2026 disruption to Strait of Hormuz traffic, can coincide with weaker growth expectations and a stronger dollar. The EIA reported Brent above $100 per barrel at the start of the second quarter of 2026, but higher prices caused by lost supply need not translate into exporter currency strength.
- Domestic factors. Housing markets, fiscal policy, trade disputes and investment conditions in the exporting country can outweigh the oil price for long periods.
Correlations measured over one period are a poor guide to the next. If you study the relationship, measure it on rolling windows and in returns rather than price levels, and expect it to change.
Using this in research
Physical oil flows are one input to this analysis. FXPM Tanker Watch tracks tanker activity at major chokepoints and anchorages using public satellite and AIS data, which can help explain why the oil price moved. Whether a currency follows is a separate question, with all the caveats above.
If you hold positions in both an oil-linked currency and oil itself, or in two oil-sensitive currencies, they can behave like one larger exposure when the link is strong. Size them together rather than separately, which the position size calculator and the guide to position sizing can help with. Nothing here is a trading signal; currency and commodity trading carries a risk of loss.
Key points
- Brent is the main global benchmark; WTI is priced at Cushing, Oklahoma, and anchors US crude pricing.
- Commodity currencies respond to terms of trade, but research finds the oil link is strongest for same-day moves, not predictions.
- Energy exports to the US were 21.7% of Canada's goods exports in 2024, yet broad dollar moves did more than oil to drive the 2014–15 CAD decline.
- Oil and gas were 57% of Norway's goods exports in 2025, but saving petroleum revenue abroad dampens the effect on the krone.
- The link weakens when dollar trends, interest rates, supply shocks or domestic factors dominate.