The Power of Interest Rate Differentials (a.k.a. Carry Trades)
When you buy a currency with a high interest rate and sell one with a low interest rate, you can earn profits in two ways:
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From the price movement (if the pair trends in your favor), and
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From the interest rate difference between the two currencies — this is known as a carry trade.
It’s like enjoying a cupcake… with frosting… and sprinkles… that pays you to eat it! 🍰💸
Currency Crosses & Carry Trade Opportunities
Currency crosses often involve countries with big interest rate differences — perfect for carry trade setups.
Take AUD/JPY as an example.
From 2002 to 2007:
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The Reserve Bank of Australia (RBA) raised its interest rate to 6.25%.
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The Bank of Japan (BOJ) kept its rate near 0%.
If you had gone long AUD/JPY, you could have:
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Profited from the strong uptrend, and
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Collected interest due to the wide interest rate differential.
Double win — like milking a cash cow while riding it to the bank! 🐄💰
Why Higher Interest Rates Can Strengthen a Currency
When a central bank raises interest rates compared to other countries, it tends to boost that currency’s value. Why?
Because higher interest rates attract more foreign capital. Here's how:
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Investors want better returns, so they buy assets in the higher-yielding currency.
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To do that, they must convert their own currency, increasing demand.
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Carry traders also jump in, borrowing in low-interest currencies and buying the high-interest one.
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Even before a rate hike happens, speculators may start buying based on expectations.
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A rising interest rate often signals a stronger economy, boosting stock market investments and bringing in even more foreign money.
All this buying power causes the currency to rise in value — but remember, this strength is relative to other currencies.
Coming Up: Advanced Carry Trade Lessons
Don’t worry if your brain feels full — we’ll explore carry trade strategies in more depth later.
You’ll learn which trades are smart… and which ones are better left alone.
We’ll even dive into the concept of risk aversion, which can flip carry trades upside down. But that’s a story for another day!