Cryptocurrency assets are steadily moving into the same reporting world as bank accounts. The OECD’s Crypto-Asset Reporting Framework, usually referred to as CARF, is part of that shift and is expected to affect how crypto activity is reported internationally in the coming years.
This guide is written for expats living in Thailand who hold crypto assets on Thai or overseas platforms and want to understand how reporting works in practice and how it interacts with Thailand’s cryptocurrency tax rules. For a full explanation of how cryptocurrency is taxed in Thailand, including taxable events, remittance rules and the 2025–2029 exemption, see our complete guide to cryptocurrency tax in Thailand.
Current CARF Status in Thailand
Thailand has committed to the OECD’s Crypto-Asset Reporting Framework but has not yet begun exchanging CARF data. Current indications suggest exchanges may begin from 2028, subject to domestic legislation and implementation.
Why CARF Matters for Expats in Thailand
CARF does not create new taxes, but it does make it far easier for tax authorities to see and compare crypto activity across borders. It follows tax residence, not nationality or the location of the exchange. This is where many globally mobile expats can run into difficulties.
In practice, the issues CARF exposes are rarely about what someone is doing today. They are more often about past years and transition periods, when people moved countries or made reasonable assumptions that were never properly checked.
Common situations include:
- Trading actively on overseas exchanges while tax resident in a higher-tax country, without reporting those disposals at the time
- Stopping filings in a home country after moving to Thailand, assuming that leaving automatically removed all reporting obligations
- Filing tax returns but omitting complex items such as crypto-to-crypto trades, staking rewards, airdrops or DeFi yields because they were hard to track
- Self-certifying tax residence inconsistently across platforms during relocation years
- Building up sizeable portfolios on offshore platforms and assuming those accounts were invisible to tax authorities
As CARF is rolled out, many platforms will be required to collect more detailed tax-residency information and to report transaction-level data to their local tax authority. That data can then be exchanged with the country, or countries, where you are treated as tax resident. Once third-party reporting exists, it becomes much harder to maintain inconsistent positions across borders.
For expats in Thailand, this matters because CARF interacts with both Thailand and other countries. Thailand continues to apply a remittance-based approach to foreign-sourced income and offers a time-limited advantage for certain trades on Thai SEC-licensed platforms. However, a former home country may tax crypto on an arising basis regardless of where the funds are now held.
The key point is that many of these issues are fixable. Addressing past gaps early, while corrections are still voluntary, is usually calmer, cheaper and more controllable than responding after a tax authority has already received third-party data and started asking questions.
Key Terms and Definitions
The sections below explain how CARF works in practice. Before that, it helps to clarify a few core terms used throughout the article.
Crypto-Asset Reporting Framework (CARF): An international reporting standard developed by the OECD that requires crypto service providers to report certain transaction data to tax authorities, which may then be exchanged with other countries.
Reporting Crypto-Asset Service Provider (RCASP): A business that facilitates crypto transactions and has control over or sufficient influence on those transactions, such as exchanges, brokers, some payment processors and certain token issuers.
Tax residence: The country where you are treated as resident for tax purposes in a given year. CARF reporting follows tax residence, not nationality or visa type.
Remittance: The act of bringing money or value into Thailand. Under Thailand’s tax system, foreign-sourced income is generally taxable only when remitted.
Thai SEC-licensed platform: A crypto exchange or service provider licensed by Thailand’s Securities and Exchange Commission.
What Is CARF (The Crypto-Asset Reporting Framework)?
CARF is a global reporting standard developed by the Organisation for Economic Co-operation and Development.
Its purpose is to allow tax authorities to automatically exchange information on cryptocurrency transactions, much as they already do for bank accounts under the Common Reporting Standard.
CARF does not introduce new taxes. It does not change how crypto is taxed in Thailand or elsewhere. It is a reporting and information-sharing framework.
Put simply, CARF increases visibility. Tax rules remain domestic.
Why CARF Exists
For many years, crypto activity sat largely outside traditional financial reporting systems. Tax authorities relied heavily on individuals to self-report activity, often without reliable third-party data.
As crypto markets matured and became more mainstream, governments sought the same level of transparency that already applies to banks and investment platforms.
CARF exists to close that reporting gap.
When Does CARF Start and How Will It Be Rolled Out?
CARF is being implemented in phases and not all countries are moving at the same pace.
The Global CARF Rollout Timeline
In broad terms:
- From 2026, over 48 jurisdictions are expected to begin collecting CARF data
- From 2027, the first automatic exchanges of information are expected
- By 2028, around 67 jurisdictions have committed, covering most major crypto markets
This is a staged rollout. Data collection may begin before exchanging information with other countries.
Thailand’s Position on CARF
Thailand has committed to CARF and has indicated an intention to begin exchanging information by 2028.
Domestic legislation and detailed guidance from the Revenue Department are still being developed.
At present, there is no published guidance setting out how CARF data will be used in practice in Thailand.
Importantly, CARF does not override Thailand’s existing cryptocurrency tax rules.
A Note for EU and UK Expats in Thailand
Some expats may be affected earlier through overseas platforms.
The European Union is implementing CARF through DAC8 from 1 January 2026. The UK is also an early adopter. This means crypto activity on EU or UK platforms may be reported before Thailand begins exchanging CARF data.
Who Has to Report Under CARF?
CARF applies to Reporting Crypto-Asset Service Providers (RCASP), not to individuals directly.
These typically include:
- Centralised crypto exchanges
- Brokers and trading platforms
- Bitcoin ATMs
- Market makers
- Certain payment processors
- Some token issuers involved in creating or issuing crypto assets
Decentralisation alone does not guarantee exemption. CARF uses a ‘control or sufficient influence’ test rather than relying on labels such as centralised or decentralised.
What Crypto Assets Are Covered Under CARF?
CARF is designed to apply broadly to relevant crypto-assets, including:
- Cryptocurrencies such as Bitcoin and Ethereum
- Stablecoins such as USDT and USDC
- Certain tokens classified as specified electronic money products
Stablecoins are generally within scope. Using stablecoins does not remove reporting obligations.
What Transactions Are Reported Under CARF?
CARF focuses on transaction-level reporting rather than simple account balances.
Reportable activity commonly includes:
- Crypto-to-fiat transactions
- Crypto-to-crypto swaps
- Transfers to self-hosted wallets, reported at an aggregate level
- Retail crypto payments exceeding USD 50,000
- Certain staking rewards, airdrops and yield where they flow through reporting platforms
Each crypto asset is reported separately. Bitcoin, Ethereum and USDC are not grouped together.
How CARF Information Is Shared Between Countries
CARF does not create a global crypto database.
The reporting process typically works as follows:
- The platform reports to its domestic tax authority
- That authority exchanges data with the tax authority in the user’s country of tax residence
- The receiving authority matches reports against tax filings
Information is exchanged between tax authorities, not made public.
Self-Custody, Cold Wallets and Privacy Under CARF
Holding crypto in a private or cold wallet is not automatically reportable under CARF.
However, transfers to or from a reporting platform may still be reportable. In practice, reporting usually appears at the on-ramp and off-ramp.
Although CARF reports may not include wallet addresses, reporting platforms must retain wallet address data for at least 5 years. Tax authorities may request this information later.
Self-custody reduces reporting but does not make activity invisible.
Thailand’s Temporary Crypto Tax Advantage (2025–2029)
This is a key development for expats.
Under Ministerial Regulation No. 399, Thailand has introduced a temporary exemption from capital gains tax on crypto sales made through Thai SEC-licensed platforms.
This exemption should be understood within the wider Thai crypto tax framework explained in our complete guide to cryptocurrency tax in Thailand.
Key points:
- Applies from 1 January 2025 to 31 December 2029
- Covers capital gains from crypto sales on Thai SEC-licensed exchanges
- Does not remove the obligation to file a Thai tax return
- Is time-limited and platform-specific
This can create a genuine planning opportunity, but only where the rules are followed carefully.
Thailand’s Remittance-Based Tax System Explained
Thailand operates a remittance-based tax system for foreign-sourced income.
In practice:
- Overseas crypto gains are generally not taxable in Thailand unless remitted
- Holding gains offshore does not usually create Thai tax liability
- The timing and tracing of remittances is critical
CARF reporting does not change this. Reporting may increase visibility, but tax outcomes still depend on Thailand’s domestic rules.
For a detailed explanation of how remittance interacts with cryptocurrency gains, see our main guide to cryptocurrency tax in Thailand.
Example: An expat realises a crypto gain on an overseas exchange in 2026 and keeps the proceeds outside Thailand. The transaction may be reported under CARF, but no Thai tax arises unless the funds are remitted to Thailand.
DeFi and the Control Test Under CARF
Decentralised finance is not automatically outside the scope of CARF.
Where a DeFi platform is controlled or influenced by identifiable parties, it may still fall within reporting obligations. Enforcement in this area is developing and guidance remains limited.
It is risky to assume DeFi activity is invisible simply because it is decentralised.
Multiple Tax Residencies and Dual Citizenship
CARF reporting follows tax residence, not nationality.
However:
- Dual citizens may be reported to more than one jurisdiction
- US citizens remain subject to citizenship-based taxation
- Inconsistent reporting across countries increases risk
CARF makes mismatches easier to identify, even where tax outcomes differ.
Reporting vs Tax: A Critical Distinction for Thailand
CARF does not rewrite Thailand’s tax law.
Thailand continues to tax crypto under its domestic framework, including its remittance-based approach to foreign income.
What CARF changes is visibility, not the underlying tax rules.
Example: An expat’s overseas crypto activity may be reported to a foreign tax authority under CARF, while still being non-taxable in Thailand if not remitted. Reporting does not automatically mean tax is due.
Common Misunderstandings About CARF and Crypto Tax
Reporting means tax is due
Reporting increases transparency. Tax is still determined by domestic law.
Stablecoins are outside the system
Stablecoins are generally within scope under CARF.
Self-custody makes transactions private
Transfers involving reporting platforms can still create a reporting trail.
Crypto Record Keeping in Thailand: What Matters in Practice
Good records reduce stress and risk.
In practice, this means keeping:
- Full exchange statements and transaction histories
- Acquisition costs and disposal proceeds with dates
- Evidence of which platforms are Thai SEC-licensed
- Clear year-by-year remittance records
This applies even in years where no tax is due.
What This Means in Practice
CARF marks the end of crypto being treated as a reporting exception.
For most expats, this does not mean higher tax. It does mean higher expectations around accuracy, consistency and record-keeping.
With a clear structure and the right advice, CARF is manageable rather than alarming.
Practical Support with Crypto Tax Filing in Thailand
CARF increases transparency, but it does not simplify the work of filing a crypto tax return. For many expats, the challenge lies in reconciling activity across multiple platforms, applying Thailand’s remittance-based rules correctly, and ensuring filings remain consistent with any international reporting.
Our specialist cryptocurrency tax filing service is designed for exactly these situations. We help expats in Thailand review their crypto activity, trace transactions where records are incomplete, and prepare filings that reflect both Thailand’s tax rules and the wider reporting environment.
If you would like clarity on how to report or file your crypto activity, a short call with our team can help you understand your position and next steps.
Frequently Asked Questions
CARF
No. CARF is a reporting framework, not a tax regime. Whether tax is due in Thailand depends on domestic tax rules, including Thailand’s remittance-based system.
No. Thailand has committed to CARF but has not yet begun exchanging CARF data. Current indications suggest exchanges may begin from 2028, subject to domestic legislation and implementation.
Holding crypto in a private or cold wallet is not automatically reportable. However, transfers involving reporting platforms may still be reported.
Yes. Stablecoins are generally within scope under CARF and are treated as relevant crypto-assets for reporting purposes.
Yes. Even where an exemption applies, such as Thailand’s temporary crypto tax exemption for certain platform trades, filing obligations may still exist.
