Arbitrage: customers buy and sell foreign currency with lower interest rate into another foreign currency with higher interest rate, thus increasing the interest income of deposits. Arbitrage: customers can take advantage of frequent changes in foreign exchange rates to earn exchange difference income by buying and selling foreign exchange.

How to achieve profitability

1. Arbitrage: It is to exchange foreign currency with lower deposit interest rate into foreign currency with higher interest rate to obtain higher interest income. For example, at present, the one-year deposit interest rate of Japanese yen is only 0.02 15%, and 1 000,000 yen can only get 2 15 yen after one year's deposit, which is less than US$ 2 at most, which is less than 20 yuan. Suppose that when the exchange rate of USD to JPY is 65,438+008, 65,438+0,000,000 JPY is converted into USD 9,260, the one-year deposit interest rate of USD is 4.4375%, and the interest after one year is USD 465,438+00. Assuming the exchange rate remains unchanged, it will be 44,280 yen, 44,065 yen more than the yen saved for one year.

2. Arbitrage: The basic principle of arbitrage is to buy low and sell high. For example, the original 10000 USD, when the USD rises to 1.90 against the mark, buy the mark 19000, sell the mark when the USD falls to 1.82, and replace it with 10440 USD, which is equivalent to buying when the exchange rate of the mark is low. Such a round of trading can earn $440 in exchange difference income.