About Carry Trade Why Did It Work and Why It Won't Anymore Carry trade is the kind of Forex trading where low-yielding currency is sold for the high-yielding one and the produced difference between the yields is gained by the trader; usually it’s also multiplied by the margin leverage. So what are the yields of the currencies? Each currency has an overnight interest rate associated with it. If you trade via a broker you buy and sell currencies without a physical delivery, so when you buy a currency you should get paid an interest from a broker, because he gets to «store» and «use» that currency, while you hold the position. If you sell a currency you should pay an interest because you «hold» and «use» the currency you sold, while the position is open. Because in Forex you trade the currencies in pairs you will get the difference between the long currency’s interest rate and the short currency’s interest rate. If you sell GBP/JPY pair and Bank of England’s interest rate is 5.00%, while Bank of Japan’s is 0.50% you’ll lose 4.50% interest on this position, if you buy this pair you gain this difference. In reality, brokers apply some commission to these differences, so you’ll lose more on negative interest and earn less on positive