A1.

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All customers who open an account with Coincheck on or after 2026/01/01 are subject to this requirement.

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• After your identity verification with Coincheck is completed, please submit the declaration form.
• If you do not submit the declaration form, your account opening will not be completed and you will not be able to start trading.

A2.

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Your tax residence country refers to the country where you are subject to tax as a resident under that country’s tax laws.

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(Examples: customers who stay overseas for a long period, customers who have tax obligations in a foreign country, etc.)

Note:

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If you are not sure which country is your tax residence country,

please check with the tax authority in your country of residence

or with a professional such as a tax accountant.

A3.

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You are required to enter the following items:

• Tax residence country name
• Taxpayer Identification Number (TIN)
• If you cannot provide your TIN, the reason (see note below)
  • You have not been issued a TIN by your tax residence country
  • Its laws prohibit providing the TIN to third parties
• If your tax residence country and your country of address (place of residence) are different, the reason

Note:

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You only need to select a reason if you cannot provide your TIN.

A4.

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After your identity verification with our company is completed,

please follow the instructions on the page below

to complete the procedure.

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https://coincheck.com/carf_informations

If your tax residence country includes any countries other than Japan,

please follow the on-screen guidance and enter information such as

“tax residence country” and “Taxpayer Identification Number (TIN)”.

Note：

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• If submission of the declaration form is not completed, your account opening procedure will not be completed and you will not be able to start trading.
• If the information in your declaration is false or incorrect,you may be subject to penalties. Please enter accurate information.

A5.

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If there is any change in your declaration details, such as your tax residence country, please submit the new information without delay.

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You can apply from here.

For information on how to complete this procedure,

please see the following page:

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How should I report if I have six or more tax residence countries excluding Japan?