Is it really a good deal for foreign currency period deposit 8%? High interest rate campaign pitfalls and foreign exchange risk 2027

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Year 8. 00%" may be a big profit. It’s simple, the display rate is an annual rate, and the interest you can receive is only a few minutes.

For example, if you leave 1 million yen in 8% or 7 days a year, the interest before tax withdrawal is about 1,534 yen, and after tax withdrawal is about 1,223 yen. Foreign exchange fees and foreign exchange。ctuations are available here. If you just move the dollar circle to 1 yen high, you may get a few thousand yen if the original 1 million yen size. In other words, short-term high interest rate campaign is "the higher the exchange rate than interest".

For those who plan to use dollars in the future, those who are too biased to the yen asset, and those who want to experience the movement of the foreign currency with a small amount. On the other hand, it is not suitable for money, life defense funds, and money that you want to increase safely in the short term.

First conclusion: Foreign exchange to see before "year 8%"

Year 8. 00%

However, it is not the interest rate that should be seen first in the foreign currency period deposit. Foreign exchange

Foreign currency deposit is a product that replaces the yen with a dollar or an Australian dollar. Even if the original book is kept in foreign currency while depositing, the exchange rate at the time of returning to the circle will increase or decrease in the circle base.

The profit and loss of the foreign currency period deposit is as follows:

It is not "safe" because it is 8% year. The actual situation is a product with a foreign exchange risk for short-term interest.

Figure: Income of foreign currency period deposit is determined by three

Why is the Bank aged 8%?

Because banks may be able to make high interest rate, banks have benefits.

In many foreign currency period deposit、, it is a condition to replace the yen to foreign currency. Banks can increase the amount of foreign currency deposits, increase foreign currency transactions, and gain exchange spreads.

In other words, high interest rate is not just a present.

For banks, it is also the cost of attracting foreign currency transactions. If you look at this calmly, it will be difficult to jump only with the campaign interest rate.

Only 7 days for 7 days

It is easy to start here.

Year 8% is the annual rate when you leave for one year. 7 days, 7 days, 14 days

The calculation formula is:

Interest = Book of deposit × Year rate × Number of deposit days ÷ 365

The image of depositing 1 million yen at 8% a year is as follows:

20. Interests after taxation 315% tax is calculated on the premise. The National Tax Agency for the interest of deposits, etc.20. It is explained that it will be subject to 315% of the source separation tax.

In this way, the actual payout is quite small than the impression of the "8% year" heading. Even if you leave 1 million yen for 7 days, it is about 1,200 yen.

If the exchange rate動く for 1 yen, the interest fly easily

Next is Forex.

For example, if you change 1 million yen for $160, it will be $6,250.

If the dollar yen is 1 yen higher in this state, it is a minus of about 6,250 yen in yen conversion. If the tax interest of 8% of the 7th year is about 1,223 yen, the interest can be sharpened even if it is 20 yen or more.

This is the core of Foreign Currency Deposit.

Interest rate is daily. Instant exchange.

High interest rate campaign is not bad. However, the interest of short-termキャンペーン is easy to lose to the normal movement of the exchange.

Foreign exchange fee: TTS and TTB are not readable

In the foreign currency deposit, the rate differs when changing from the yen to the foreign currency and when returning from the foreign currency to the yen.

The National Banks Association explains the rate of the exchange from the yen to the foreign currency, the rate of the exchange from the foreign currency to the yen is TTB. Each bank is determined independently, and the fees differ depending on the bank.

For example, the following rate:

In this case, even if the exchange rate itself does not move, there is a difference of one yen per round trip. If you buy a dollar at a scale of 1 million yen, you may be burdened by this spread.

Net Bank may prefer foreign exchange costs during the campaign. On the other hand, there is a wide spread in the store type bank. The following three things should be seen:

• Exchange cost when depositing
• Exchange cost when refunding
• Is it necessary to hold the foreign currency after the expiration?

Earnings: How much can you bear?

If you think about the slightest profit and loss, you will be able to divide the payable interest and exchange costs by the foreign currency amount.

Able tolerate ≈ Interest after tax ÷ foreign currency

If you change 100 million yen to $160, the holding amount is about $6,250.

If the tax interest of 8% and 7 days is about 1,223 yen,

1,223 yen ÷ $6,250 ≈ 0. JPY200.00

In other words, even if you ignore the foreign exchange fee, the interest after tax is almost disappeared in the circle of about 20.

In addition, if there is a round-trip exchange spread, it is like to bear a hand of about 6,250 yen from the beginning. In that case, only 7 days of interest is hard to be buried.

In the actual judgment, the following order is calculated.

Foreign currency deposit is not covered by deposit insurance

The foreign currency deposit is called "deposit", but it is better not to see it in the same sense as the ordinary deposit of the yen or the yen period deposit.

The Financial Services Agency explains that up to 10 million yen per financial institution, including the general deposit, will protect the interest until the bankruptcy date. On the other hand, foreign currency deposits are organized as non-target deposits in the publicity materials of the deposit insurance system.

The National Banks Association also explains that the foreign currency deposit is not covered by deposit insurance, as the characteristic of the foreign currency exchange rate movement.

In other words, there are three major risks for foreign currency deposits.

• ExchangeRisk
• Forex Fees and Spreads
• Non-Deposit Insurance Risks in Bankruptcy

It is dangerous to think that it is as safe as a yen deposit because it is a bank product.

Taxes: Interest and exchange margins are different

In foreign currency deposit, I think of interest and foreign exchange margin.

The Bank of Japan Association explains that if the exchange rate difference occurs after the expiration of the foreign currency deposit, it will be subject to general taxation as miscellaneous income. If income other than salary is less than a certain amount, it may be unnecessary to report, but it depends on individual circumstances.

Tax is local, but it is effective if the amount increases. T who repeat foreign currency deposits, those who combine with foreign currency MMF, U.S. stocks, and those who use overseas accounts are safe to check with tax accountants and tax offices.

Foreign Currency Deposit

There is no need for foreign currency deposit. There is a meaning depending on the usage.

The following people are facing:

• There is a plan to use the dollar in the future
• I want to have foreign currency as a U.S. stock or U.S. ETF
• Overseas travel, study abroad and overseas remittance
• I want to disperse foreign currency only with a small amount that is too biased to the yen asset
• I want to experience the movement of the Forex program with a small amount

In particular, “Do not return to the yen after maturity, and use it as a foreign currency” people have to rush to confirm the exchange risk at the time of the yen change. It is easy for people with dollar usage such as travel and U.S. stock investment.

Not suitable

On the other hand, the following people are quite unsuitable.

• Living Defense Fund
• をly avoiding the original crack
• There is a plan to use in circles while close Almost no exchange rate
• “If 8% of the year, it will be safe.”
• No interest rate after the campaign has been confirmed

Especially, like rent, tuition, tax, and house purchase funds, it is better not to make foreign currency when and money is determined. If you have to return to the circle when the exchange is bad, you can not avoid loss.

Exchange Environment for 2027

The theme to be seen on foreign currency deposits in 2027 is the difference between U.S. and Japan.

As of April 2026, FRB has a range of ラルral fund interest rates. 50〜3. On the other hand, Nisin is a financial policy decision meeting in April 2026, and the next day of unsec call interest rate 0. This is a policy that encourages you to change in your business.

U.S. interest rate is still higher. So the interest rate of USD deposit is higher than the yen deposit.

However, it is difficult to get here.

U.S. dollar interest rate is easy to fall if the U.S. goes to interest due to economic dullness and inflation. If the price and観測 are viscosed in Japan, and the addition of Japanese silver increases, the rate difference between Japan and the United States is easy to shrink. When the interest rate difference is shrinked, the scene moving in the circle high direction will also appear.

Of course, the exchange rate is not determined by the rate difference. The position of financial anxiety, geopoli risk, U.S. economy, stock market, resource price, and investment muscle is also effective.

So, if you look at the foreign currency period deposit for 2027, you want to check the following three.

• US interest rate
• 日銀 Additional interest rate
• Is the dollar circle already too far to the yen ?

"Buy dollars because of high interest rates" may be quite late. If the market has already interwoven the yen, it may be returned at the end of the period.

Is there a more robust option than a foreign currency deposit?

Only foreign currency period deposit is not foreign currency operation.

If you are a beginner, you can see how much you can decrease in the circle base instead of “Is it visible to the original warranty?” Foreign currency MMF and U.S. bonds may be lower, but you need to check the priceリスクctuation risk and tax handling separately.

How beginners can not fail

If you use a foreign currency period deposit, it is very small at first.

• Don’t include living defense funds
• I don't change the yen asset to foreign currency at once
• をulation of real tax interest first if it is 7 days
• Watch TTS and TTB
• Determine whether to return to the circle after maturity or remain foreign currency
• Check the regular interest rate after the campaign

The best practice is to make a foreign currency deposit for a small amount and see how much dollar circle will move by the due date. If you learn the feeling that the foreign exchange movement is bigger than interest, it becomes difficult to swing from the next to the "year 8%" of the advertisement.

Judgment by Type

Summary: Foreign currency period deposit is not "high interest rate product"

The high interest rate campaign of the foreign currency period deposit is attractive. When the number is 8% year, 10% year, and 12% year, it looks much more useful than the yen deposit.

However, it is a daily interest that you can actually receive. If it is 7 days, it is about 1,223 yen if you leave 1 million yen at 8% a year. There are exchange fees and foreign exchange ctuations. The interest may disappear due to 20 yen.

Foreign Currency Deposits are available for those who plan to use foreign currency, who want to separate some of the yen assets into foreign currency, and those who want to learn a small amount of exchange. On the other hand, it is not a product that takes high yield safely.

See order is not interest rate,

1. Exchange rate
2. Exchange fee
3. Tax interest
4. No deposit insurance After Expiration

This order is.

Understand the exchange rate ahead of interest to win 8% of the year. If you press it, the period deposit of foreign currency is not a scary product, it will be a product that you choose.

Reference

• Federal Reserve「Economy at a Glance - Policy Rate」
• [)ments on Monetary Policy 2026]