Notice on the Submission of Self-Certification under the CARF Implementation Regulations

Last Updated : April 3, 2026 Category : Notice

Dear Valued Members,

Under Article 36 of the Adjustment of International Taxes Act and the Implementation Regulations on the Automatic Exchange of Crypto-Asset Information pursuant to Information Exchange Agreements (the "CARF Implementation Regulations"), domestic virtual asset service providers are now required to collect self-certifications, conduct due diligence, identify reportable users, and report transaction information with respect to their members. We outline below what this framework entails and how it may affect you.

1. Overview

Last Updated April 3, 2026
Legal Basis Adjustment of International Taxes Act, Art. 36 / CARF Implementation Regulations
Applies To All members (including corporate clients)
Reporting Begins From 2027 (reportable users only)

2. What Are the CARF Implementation Regulations?

The CARF (Crypto-Asset Reporting Framework) is an OECD framework for the automatic cross-border exchange of crypto-asset transaction information. It extends the existing CRS regime — which governs the exchange of financial account information — into the crypto-asset domain, enabling each jurisdiction's tax authority to mutually exchange information on assets held and transacted by its residents through overseas virtual asset service providers.

Korea has adopted this framework through Article 36 of the Adjustment of International Taxes Act and the CARF Implementation Regulations. Accordingly, domestic virtual asset service providers (including custodians) must fulfill member identification and reporting obligations.

3. What Is a Self-Certification?

A self-certification is a document in which a member (whether an individual or an entity) declares their own tax residency jurisdiction(s) and Taxpayer Identification Number (TIN), among other details. Based on the submitted self-certification, we perform due diligence to determine whether the member qualifies as a "Reportable User."

Purpose To confirm tax residency jurisdiction and determine reportable status
Key Items Declared Name / entity name, tax residency jurisdiction(s), Taxpayer Identification Number (TIN), and (for entities) entity classification and Controlling Persons information
Submission Method Completed and submitted using the form provided by InfiniteBlock (affected members will be contacted individually)

4. The Majority of Members Are Not Affected

✓ If you have no overseas tax obligations, you are not a reporting target

Although the self-certification requirement applies to all members, the majority of members who have no overseas tax obligations may continue using our services exactly as before and are not subject to reporting. Only a limited number of members with overseas tax obligations may be affected, for example through requests for additional information or supporting documentation.

Example — A Korean individual (or a Korea-resident entity) with tax obligations solely in Korea is not subject to reporting.

5. Guidance for Corporate Clients

Unlike individuals, corporate members are assessed not only on the entity's own tax residency but also on its entity classification and its Controlling Persons. Reviewing the points below in advance will help ensure a smooth process.

Tax Residency Jurisdiction — Identify the jurisdiction(s) where the entity is incorporated/registered and bears tax obligations. (There may be more than one.)
Entity Classification — The entity is classified as a Financial Institution, an Active Non-Financial Entity (Active NFE), or a Passive Non-Financial Entity (Passive NFE), among other categories.
Identification of Controlling Persons — Where the entity is a Passive NFE, the tax residency of the individuals who exercise control over the entity (such as major shareholders or directors) also falls within the scope of review.
Reportable Status Determination — An entity that is tax-resident solely in Korea and has no overseas-resident Controlling Persons is generally not subject to reporting. Conversely, an entity that is tax-resident overseas, or that has overseas-resident Controlling Persons, may fall within the scope of reporting.

* The exact items and supporting documents required may vary depending on the entity's classification and ownership structure, and will be provided in detail together with the form at the time of individual notification. If you have difficulty determining your status, please contact our team.

6. Timeline

By December 31, 2026
Existing Members — Please submit your self-certification upon our request. (Affected members will be notified individually.)
New Members from 2026 Onward
Newly Onboarding Members — Submission of a self-certification is mandatory at the time of account onboarding.
From 2027
Based on the submitted self-certifications, the user and transaction information of identified Reportable Users will begin to be reported.

* The detailed schedule and submission procedures set out in this notice are subject to change in accordance with applicable laws and the guidance of the tax authorities. Any changes will be reflected in this notice.

7. Submission Method and Contact

The self-certification form and submission procedures will be provided individually to affected members. For any inquiries, please contact us using the details below.

Department Compliance Team
Phone +82-2-538-2374
InfiniteBlock Inc. remains committed to providing transparent and trustworthy digital asset custody services.
Thank you.

Infiniteblock Corp.
CEO: Jeong Gu-tae
Business Registration No.: 306-88-02374
FAX : 02-538-2376

TEL : 02-538-2374
E-mail : contact@inbl.io
Address: (Headquarters) 6F, Ara Tower, 11-12, Teheran-ro 77-gil, Gangnam-gu, Seoul
(Financial Tech Lab) 19F, O2 Tower, 83, Uisadang-daero, Yeongdeungpo-gu, Seoul

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COPYRIGHT © 2026 InfiniteBlock Corp. ALL RIGHTS  RESERVED.

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당사를 사칭한 서비스에 대한 주의 안내

최근 ㈜인피닛블록(InfiniteBlock)이 특정 가상자산 카드 서비스의 수탁사인 것처럼 안내되는 사례가 확인되었습니다.

당사와 무관한 서비스 altcoincard.net · 알트코인카드 당사는 해당 사업자와 수탁계약·업무제휴·투자 등 어떠한 관계도 맺은 사실이 없습니다.

당사는 금융정보분석원(FIU)에 신고 수리된 가상자산사업자로서, 모든 서비스는 공식 홈페이지와 등록된 담당자를 통해서만 제공됩니다. 당사 명의를 사용한 제안을 받으신 경우 이용을 중단하시고 아래 연락처로 알려주시기 바랍니다.

2026. 08. 21. 게시 contact@inbl.io