A practical guide to understanding cross rates in forex — how they work, what moves them, which data sources matter, and how to approach timing and risk. Written for traders, investors, and students of the currency markets.
A cross rate (or cross currency pair) is an exchange rate between two currencies that does not involve the United States dollar as either the base or the quote currency. In the traditional forex market, most currencies are quoted against the USD (e.g., EUR/USD, USD/JPY, GBP/USD). A cross rate is derived from those USD-based quotes, creating a direct exchange rate between two non-USD currencies.
For example, the EUR/GBP cross rate tells you how many British pounds are needed to buy one euro, without using the U.S. dollar as an intermediary. Similarly, EUR/JPY, GBP/JPY, and AUD/JPY are all widely traded cross rates. According to the Bank for International Settlements (BIS) Triennial Central Bank Survey, cross-currency pairs accounted for a significant and growing share of global spot forex turnover, reflecting the increasing importance of trading outside the dollar bloc.
Cross rates are calculated using the exchange rates of each currency against a common base currency — almost always the U.S. dollar. The formula depends on whether the currencies are quoted as direct or indirect against the USD.
For two currencies A and B, both quoted against the USD (e.g., A/USD and B/USD), the cross rate A/B is:
A/B = (A/USD) / (B/USD)
If one currency is quoted as USD/A (indirect), the calculation is adjusted accordingly. In practice, forex trading platforms calculate these rates automatically, but understanding the math helps traders spot pricing anomalies and arbitrage opportunities.
Because cross rates are derived from two USD pairs, their bid-ask spreads are typically wider than those of major dollar pairs. The spread for a cross pair is effectively the sum of the spreads of the two underlying USD pairs. This is a crucial consideration for short-term traders and scalpers.
Not all cross pairs are created equal. Some are highly liquid and traded actively around the clock, while others are more niche. Below are the most widely followed cross rates in the interbank and retail forex markets.
The euro against the Japanese yen — one of the most liquid crosses, sensitive to risk sentiment and interest rate differentials between the eurozone and Japan.
The euro against the British pound — heavily influenced by economic data from the UK and the eurozone, as well as Brexit-related political developments.
The pound against the yen — known for high volatility, driven by risk appetite, UK economic data, and Bank of England policy relative to the Bank of Japan.
The euro against the Swiss franc — historically a proxy for European stability, with the Swiss National Bank sometimes intervening to manage the franc's strength.
The Australian dollar against the yen — a "risk-on/risk-off" barometer, closely tied to commodity prices and Chinese economic data.
Commodity-linked crosses that reflect the relative strength of the euro/pound against the Australian dollar, influenced by resource prices and global growth.
The BIS Triennial Survey consistently ranks EUR/JPY, EUR/GBP, and GBP/JPY among the most actively traded currency pairs globally, underscoring their importance to institutional and retail participants alike.
Trading cross rates effectively requires monitoring a specific set of signals that differ from those used for USD-based pairs. Because crosses involve two non-USD economies, the signals are often more nuanced.
The interest rate gap between two central banks is a primary driver of cross-rate movements. Traders watch central bank policy statements, meeting minutes, and forward guidance from the European Central Bank, Bank of Japan, Bank of England, and others. A widening differential tends to favor the higher-yielding currency.
GDP growth, inflation (CPI), employment figures, and manufacturing PMIs from both economies impact cross rates. For instance, stronger-than-expected eurozone GDP relative to UK GDP can push EUR/GBP higher. Traders often compare the relative performance of two economies rather than absolute numbers.
Cross rates are highly sensitive to geopolitical events. For example, EUR/CHF often reacts to European political uncertainty, while AUD/JPY responds to shifts in global risk appetite. The Japanese yen is a traditional safe-haven currency, so crosses involving the yen tend to strengthen during market stress.
Many traders use technical analysis on cross pairs, including trendlines, support and resistance levels, moving averages (50-day, 200-day), and momentum indicators such as RSI and MACD. Cross pairs often exhibit strong trending behavior, making them suitable for trend-following strategies.
Reliable data is the backbone of any forex analysis. For cross rates, traders should consult a mix of official, interbank, and third-party sources. Below are some of the most trusted providers.
For investor education and risk-awareness, the CFTC (U.S. Commodity Futures Trading Commission) provides retail forex fraud prevention resources, while the NFA (National Futures Association) maintains BASIC, a database of forex firm registration and disciplinary history. FINRA also offers investor alerts on forex-related risks. These sources are not price feeds but are invaluable for understanding the regulatory landscape and avoiding unscrupulous brokers.
The forex market operates 24 hours a day, but not all hours are equally active for cross rates. Liquidity and volatility vary across the three major trading sessions: Asian, London, and New York.
During the Asian session, crosses involving the Japanese yen (EUR/JPY, GBP/JPY, AUD/JPY) see heightened activity. Economic data releases from Japan, Australia, and China can trigger sharp moves. Liquidity is generally thinner than during the London-New York overlap, so spreads may be wider.
The London session is the most active period for European crosses such as EUR/GBP, EUR/CHF, and GBP/CHF. The majority of forex volume flows through London, and economic data from the UK and the eurozone often drive price action. This session typically offers the tightest spreads and greatest liquidity.
The New York session overlaps with London for a few hours, creating the highest liquidity window of the day. Crosses involving the USD are most active, but European crosses also benefit. After the London close, volatility tends to subside until the Asian open.
For most major crosses, the London session (8:00 AM – 4:00 PM GMT) offers the best balance of liquidity and volatility. For yen crosses, the Asian session (11:00 PM – 8:00 AM GMT) is also worth watching. Traders should also be aware of key economic data release times, as these can cause sudden spikes in volatility.
The table below compares key characteristics of the most widely traded cross currency pairs. Use this as a quick reference when evaluating which cross aligns with your trading style and objectives.
| Cross Pair | Liquidity | Avg. Spread (pips)* | Primary Drivers | Best Session |
|---|---|---|---|---|
| EUR/JPY | High | 3–6 | Risk sentiment, ECB/BoJ policy | London, Asian |
| EUR/GBP | High | 2–5 | UK/EU economic data, political events | London |
| GBP/JPY | High | 4–8 | Risk appetite, BoE/BoJ divergence | London, Asian |
| EUR/CHF | Medium | 4–7 | European stability, SNB intervention | London |
| AUD/JPY | Medium | 4–8 | Commodity prices, China data, risk | Asian, London |
| EUR/AUD | Medium | 5–10 | Commodity prices, RBA/ECB policy | London, Asian |
* Spreads are indicative and vary by broker, market conditions, and time of day. Always check your broker's live pricing.
Before entering a cross-rate trade, run through this checklist to ensure you have covered the key bases.
Scenario: The European Central Bank (ECB) signals a hawkish pivot, while the Bank of England (BoE) indicates a cautious hold on rates. You believe this will widen the interest rate differential in favor of the euro.
Action: You decide to go long on EUR/GBP. Before entering, you check the spread (currently 2.5 pips), verify that no major UK or EU data is due in the next 12 hours, and set a stop-loss 40 pips below entry.
Outcome: Over the following session, EUR/GBP rallies 60 pips as the market prices in the policy divergence. You take profit at +50 pips, respecting your risk-reward ratio of roughly 1.25:1.
Lesson: This trade worked because the fundamental signal was supported by a clear policy divergence, and the timing avoided data-related volatility. However, always be prepared for surprises — central bank statements can be reversed or re-interpreted.
This scenario is for educational purposes only. Past outcomes do not guarantee future results. Always conduct your own analysis and consider all risks.
The CFTC and NFA regularly highlight the importance of understanding the unique risks of trading non-USD pairs, including the potential for rapid and unexpected moves during market stress. Familiarize yourself with their educational materials before trading.
Trading forex cross rates carries a high level of risk and may not be suitable for all investors. The leveraged nature of forex trading means that even a small adverse movement in exchange rates can result in substantial losses, potentially exceeding your initial deposit.
Specific risks for cross rates include:
Before trading cross rates, you should:
This guide is for educational purposes only and does not constitute financial, legal, or tax advice. All trading decisions are your own responsibility.
The Federal Reserve and BIS provide valuable macroeconomic data that can help you contextualize cross-rate movements, but they do not endorse or recommend any trading strategy. Always use multiple sources and think critically.