A detailed educational guide to currency carry trades — what they are, how they work, practical examples, how to evaluate them, and the risks you need to understand.
Carry forex — often referred to as the currency carry trade — is a trading strategy that seeks to profit from the interest rate differential between two currencies. In its simplest form, a trader borrows a currency with a low interest rate (the funding currency) and uses the proceeds to buy a currency with a higher interest rate (the target currency)[reference:0][reference:1]. The trader then earns the difference between the interest paid on the borrowed currency and the interest received on the invested currency, which is credited or debited to the account daily as long as the position remains open[reference:2].
The Bank for International Settlements (BIS) defines a carry trade as a leveraged cross-currency position designed to take advantage of interest rate differentials and low volatility[reference:3]. The strategy is essentially a bet on unhedged interest rate parity: the trader expects that the interest rate differential will not be fully offset by adverse exchange rate movements over the holding period[reference:4].
A currency carry trade involves two simultaneous positions: a short position in the low-yielding funding currency and a long position in the high-yielding target currency[reference:5]. The trade is typically executed through a forex broker using a currency pair such as AUD/JPY or USD/JPY.
The BIS notes that while the textbook carry trade involves borrowing the funding currency in the spot market, the more common approach used by hedge funds and institutional investors relies on derivatives such as FX forwards, swaps, and options[reference:7]. This makes it difficult to precisely measure the total size of carry trade activity from banking statistics alone[reference:8].
Pair: AUD/JPY | Funding currency: JPY (low yield) | Target currency: AUD (higher yield)
Suppose the Bank of Japan keeps its policy rate at 0.1% while the Reserve Bank of Australia holds its rate at 4.35%. The interest rate differential is approximately 4.25 percentage points.
A trader borrows 10 million JPY at 0.1% and converts it to AUD at an exchange rate of 95.00, receiving approximately 105,263 AUD. The trader holds the position for three months.
Swap income: Over three months, the trader earns roughly 4.25% per annum on the AUD position, or about 1.06% for the quarter — approximately 1,116 AUD in interest income, while paying about 0.025% on the JPY loan, or roughly 2,500 JPY (about 26 AUD). The net swap gain is roughly 1,090 AUD.
Exchange rate risk: If the AUD/JPY exchange rate moves from 95.00 to 93.00 (AUD depreciates against JPY), the trader loses about 2.1% on the currency conversion when closing the trade. This loss could easily exceed the swap gains, turning the trade into a net loss.
This example is for educational purposes only and does not represent a recommendation. Actual swap rates, spreads, and exchange rates vary.
The Banque de France provides a real-world illustration: in 2024, one popular carry trade was to borrow in Japanese yen and invest in Mexican pesos, taking advantage of a roughly 10-percentage-point differential between 3-month yields[reference:9]. However, the trade delivered contrasting performances over the year — it outperformed US equities until late May, but then suffered sharp losses in June and July 2024 after the Mexican peso dropped following election results and the Bank of Japan unexpectedly hiked rates[reference:10]. This example highlights how FX volatility can completely wipe out interest gains[reference:11].
Hedge funds, pension funds, and asset managers are the most active participants in currency carry trades. They use the strategy as a source of return enhancement and portfolio diversification. The BIS has documented that global macro and managed futures funds are traditionally key players in carry trades[reference:12].
Multinational corporations may engage in carry trades as part of their cash management or financing strategies. Some non-financial corporations borrow in foreign currency and lend in domestic currency, accumulating currency risk in the process[reference:13].
Retail traders can access carry trades through forex brokers. However, the CFTC and NASAA warn that off-exchange forex trading by retail investors is extremely risky and can involve fraud[reference:14]. Retail traders should be especially cautious and thoroughly research any broker before depositing funds[reference:15].
Some central banks and sovereign wealth funds use carry trades as part of their reserve management strategies, though they typically have more sophisticated risk controls and longer investment horizons.
Evaluating a carry trade goes beyond simply looking at the interest rate differential. Professional traders and analysts use a range of metrics to assess whether a carry trade offers an attractive risk-adjusted return.
The table below compares different types of carry trade approaches and the key factors traders consider when deciding which trade to execute.
| Approach | Funding Currency | Target Currency | Risk Profile | Typical Holding Period |
|---|---|---|---|---|
| Classic G10 carry | JPY, CHF | AUD, NZD, USD | Moderate to high | Weeks to months |
| Emerging market carry | JPY, USD, EUR | MXN, ZAR, TRY, INR | Very high | Days to weeks |
| Hedged carry | JPY, CHF | AUD, NZD, USD | Lower (hedged) | Months to years |
| Leveraged carry | JPY, USD | AUD, NZD, GBP | Extremely high | Days to weeks |
Decision criteria: When choosing a carry trade, consider the interest rate differential, the volatility of the currency pair, the economic outlook for both countries, and your own risk tolerance. Always check the swap rates offered by your broker, as they may differ from the central bank rates due to market conditions and broker markup.
This is dangerously misleading. While the interest income component is relatively stable, the exchange rate risk can be massive and can wipe out months of interest gains in a matter of days[reference:22]. Carry trades are leveraged, cross-currency positions with significant downside risk[reference:23].
Not necessarily. In fact, unhedged interest rate parity theory suggests that high-interest-rate currencies tend to depreciate over time to offset the interest differential[reference:24]. The carry trade profit comes from the timing — exploiting short-term market inefficiencies before the theory plays out.
Carry trades require active monitoring. Central bank decisions, economic data releases, and shifts in risk sentiment can all trigger sharp movements in exchange rates. Traders need to be ready to close positions quickly if conditions change[reference:25].
While it's true that professionals dominate the space, retail traders can access carry trades through forex brokers. However, retail traders should be aware of the high risks involved and the potential for fraud. The CFTC warns that off-exchange forex trading by retail investors is at best extremely risky, and at worst, outright fraud[reference:26].
Before entering a carry trade, consider working through this checklist:
Currency carry trades are highly speculative and can result in substantial losses, including losses that exceed your initial investment. The CFTC warns that off-exchange forex trading by retail investors is at best extremely risky, and at worst, outright fraud[reference:31]. The NFA and FINRA also emphasize the risks of leveraged forex trading[reference:32].
This guide is for educational purposes only and does not constitute financial, legal, or tax advice. Always consult with a qualified professional and verify current rules, fees, spreads, rates, broker availability, and platform terms with the relevant authority or provider before making any trading decisions.
Carry forex is a strategy where a trader borrows a currency with a low interest rate and uses those funds to buy a currency with a higher interest rate. The trader aims to earn the interest rate differential, known as the "carry", while hoping that the exchange rate does not move against the position.
Traders earn from the daily interest rate differential (swap) between the two currencies in the pair. If the trade is held overnight, the broker credits or debits the difference based on the central bank rates of the two currencies. The trade may also generate additional profit if the higher-yielding currency appreciates against the funding currency.
The biggest risk is adverse exchange rate movement. If the funding currency appreciates or the target currency depreciates sharply, the currency loss can wipe out the interest gains and lead to a net loss. Other risks include sudden volatility, central bank policy changes, and forced unwinding of crowded carry positions.
Popular carry trade pairs include AUD/JPY, NZD/JPY, and USD/JPY. These pairs typically involve borrowing the low-yielding Japanese yen (JPY) to buy higher-yielding currencies such as the Australian dollar (AUD) or New Zealand dollar (NZD). The specific pairs change over time as interest rate differentials shift[reference:41].
Carry forex is considered a high-risk strategy and is generally more suitable for experienced traders who understand currency markets and have robust risk management. Retail traders should be cautious; the CFTC and NASAA warn that off-exchange forex trading by retail investors is extremely risky and can involve fraud[reference:42].
Traders and analysts evaluate carry trades using risk-adjusted metrics such as the carry-volatility ratio (interest rate differential divided by exchange rate volatility). They also consider the Sharpe ratio, downside risk measures like VaR (Value at Risk), and the historical performance of the currency pair during stress periods[reference:43].
A carry trade unwind occurs when traders rapidly close their carry positions, often due to a change in market sentiment, a central bank rate hike, or a spike in volatility. This can cause sharp movements in exchange rates, as seen in August 2024, and can amplify losses for remaining carry traders[reference:44].
Swap rates are typically displayed on your broker's trading platform under "swap long" and "swap short" for each currency pair. They are derived from the interest rate differential between the two currencies. Always verify current rates with your broker, as they can change daily based on central bank decisions and market conditions.