What Is the Carry Trade in FX?
The carry trade borrows in a low-interest currency to invest in a high-interest currency. Learn why it matters for exchange rate movements.
Key Takeaways
- The carry trade borrows cheaply in one currency to earn higher returns in another
- Carry trades work until they unwind — abruptly and with large currency moves
- The JPY carry trade is the most famous historical example
- Understanding carry dynamics helps predict FX volatility during risk-off events
What the carry trade is
The carry trade is an investment strategy where an investor borrows in a currency with low interest rates and invests in assets denominated in a currency with higher interest rates, pocketing the interest rate differential. If you borrow in Japanese yen at 0.1% and invest in US Treasury bonds yielding 5%, the annual carry is approximately 4.9%.
Why it works until it does not
The carry trade works when exchange rates are stable or move in the investor's favour. Carry trades can be profitable for extended periods. The risk is sudden reversal: when global risk appetite falls, carry trades unwind rapidly and cause sharp currency moves.
The JPY carry trade
Japan has maintained near-zero interest rates for decades, making yen the world's favourite carry trade funding currency. When risk appetite deteriorates — a market crash, a geopolitical event — these trades unwind simultaneously. Yen surges as investors buy back yen to repay loans, which is why JPY often strengthens sharply during global market stress.
Why it matters for businesses
If your business trades in currencies that are targets of carry trades (many emerging market currencies, AUD, NZD), these currencies can move sharply and seemingly unrelated to your trade fundamentals. An AUD-earning UK business may see sterling strengthen sharply against AUD during a global risk-off episode — not because of UK-Australia trade, but because carry trades are unwinding.
The lesson for hedgers
The carry trade dynamic reinforces why hedging should be based on your business needs, not currency market speculation. If you have receivables in a carry-target currency, hedge them regardless of whether you think the carry trade will unwind. The unwind is unpredictable and often violent.