Global Crypto Tax Reporting Requirements: Key Jurisdictions Explained

A crypto business with entities in New York, London, and Singapore does not have one crypto tax reporting deadline. It has three different first reporting years — 2025, 2026, and 2027 — running under three different frameworks, with filing dates set by three different authorities.

Crypto tax reporting no longer follows one global timeline. Depending on where it operates and who its users are, a single business may simultaneously face US Form 1099-DA broker reporting, UK CARF, EU DAC8, Singapore CARF, and UAE CARF. The phrase "crypto tax reporting" covers all five, while the scope, nexus, effective dates, reporting periods, and filing processes behind it differ in each.

Global crypto tax reporting is not one worldwide filing regime; it is a set of international and domestic frameworks with different scope, timelines, and submission requirements.

This page compares those regimes. For the data model and processes that sit underneath them, see our guide on how to build crypto tax-reporting infrastructure across multiple regimes.

Crypto Tax Reporting by Jurisdiction: 2026–2028 Overview

Global crypto tax reporting is not one worldwide filing regime; businesses must map the reporting framework that applies in each relevant jurisdiction. Here is where the five key markets stand:

• United States — Form 1099-DA broker reporting. In force. Gross proceeds reporting for transactions from 1 January 2025; basis reporting expands from 1 January 2026.
• United Kingdom — domestic CARF. In force from 1 January 2026. The 2026 report is due to HMRC by 31 May 2027.
• European Union — DAC8. In force from 1 January 2026. 2026 is the first period; Member States exchange by 30 September 2027.
• Singapore — domestic CARF. Regulations enacted in August 2026. First reporting year 2027; first exchange September 2028.
• UAE — domestic CARF. Effective 1 January 2027. 2027 is the first reporting period; first exchange in 2028.

One distinction runs through the whole table and causes most planning errors: a filing deadline and an exchange deadline are not the same thing. The filing deadline is when your business submits data to its own tax authority. The exchange deadline is when that authority passes the information to its counterparts abroad. The second is usually later, and quoting it as your own deadline can cost months.

The wider international picture is easy to overstate. 77 jurisdictions have formally committed to implementation, while domestic effective dates and reporting timelines differ. A jurisdiction's CARF commitment does not mean that active business reporting obligations already apply there.

United States — Form 1099-DA Broker Reporting

The United States currently uses Form 1099-DA broker reporting rather than CARF as its primary digital-asset information-reporting regime. It is a domestic broker-reporting model built on existing US information-return rules, not an implementation of the OECD standard — so a CARF-shaped dataset does not map onto it directly.

Which Brokers Are Currently in Scope?

The final broker regulations focus on providers that take possession of customers' digital assets in the relevant customer transactions. The categories named include operators of custodial digital asset trading platforms, certain hosted wallet providers, digital asset kiosks, and certain processors of digital asset payments.

Decentralised and non-custodial providers that do not take possession sit outside the current rules. A separate 2024 rule that would have extended broker reporting to certain DeFi front-end services was disapproved in 2025 under the Congressional Review Act and has no legal effect. In practical terms, that means it is wrong to assume DeFi platforms currently carry 1099-DA broker reporting obligations — and because of how the Congressional Review Act works, a substantially similar rule cannot simply be reissued.

Gross Proceeds and Cost Basis

The US regime phases in over two years rather than starting at full scope:

• 2025 — gross proceeds reporting applies to transactions effected on or after 1 January 2025.
• 2026 — basis reporting applies to certain covered transactions effected on or after 1 January 2026, subject to the applicable rules and exceptions, alongside continuing gross proceeds reporting.

Cost basis is the part that separates the US model from the CARF family most sharply. CARF-style regimes are built around who the user is and what they transacted in aggregate; US broker reporting also asks what the asset cost, which pulls acquisition records, transfer history, and per-wallet tracking into scope. For the surrounding regulatory context, see the broader US crypto regulatory framework.

United Kingdom — CARF Reporting Is Already in Force

UK CARF reporting applies from 1 January 2026, with the first report for the 2026 calendar year due by 31 May 2027. The UK implemented CARF through domestic regulations rather than leaving it to a future timetable, so 2026 is a live data-collection year, not a preparation window.

One feature is easy to miss. The UK regime is not limited to collecting information about non-UK users for onward exchange — it also requires reporting on users resident in the UK, following an amendment made in 2026. In practical terms, a UK provider cannot scope its remediation exercise to foreign customers only; the domestic book is in scope too.

In-scope providers register with HMRC, collect and verify user tax-residence information, report annually, and keep the supporting records. For the licensing and conduct side of operating there, see the current UK crypto regulatory framework.

European Union — DAC8 Started in 2026

EU DAC8 applies from 1 January 2026, with 2026 as the first crypto reporting period. DAC8 is an EU legal regime in its own right — closely aligned with CARF, but with its own scope, procedures and enforcement rather than a copy of the OECD text.

In-scope Reporting Crypto-Asset Service Providers collect tax-residence information from their users and report prescribed user and transaction data to a national tax authority. Member States must then exchange the information for the first period by 30 September 2027.

That exchange date is not your filing date. National filing procedures and deadlines are set by each Member State's implementation and several fall well before September 2027, which matters most for groups reporting through more than one Member State. The full regime — scope, registration, due diligence, the technical format — is covered in our guide to EU DAC8 crypto reporting requirements.

Singapore — CARF Rules Are Now Enacted

Singapore enacted its CARF Regulations in August 2026, with the first reporting year covering 2027 and automatic exchanges beginning in September 2028. The regulations were made on 11 August 2026 and IRAS published an accompanying e-Tax Guide, which replaced the earlier position in which the framework's mechanics were still being settled.

The operational sequence for a Reporting Singaporean CASP:

• due diligence on crypto-asset users, including determining tax residence and identifying controlling persons for relevant entity users;
• 2027 as the first reportable calendar year;
• an annual return filed by 31 May of the following year, so the first return falls due in 2028;
• first international exchange scheduled for September 2028.

The common misreading here is to treat 2028 as the start date. It is the year of the first exchange and the first return; the due diligence and data-collection work belongs to 2027, which means the build has to be finished before that year opens.

UAE — CARF Starts in 2027

UAE CARF implementation takes effect on 1 January 2027, with first automatic exchanges expected in 2028. The UAE has moved past the consultation stage: it signed the CARF Multilateral Competent Authority Agreement in September 2025, and the Ministry of Finance has confirmed a 1 January 2027 effective date for its aligned tax-transparency timeline, with first exchanges in 2028 covering the 2027 period.

CARF in the UAE is a tax-transparency regime that sits alongside the licensing frameworks rather than inside them. It is separate from VARA's requirements, and in-scope providers should treat it as its own workstream rather than something an existing licence covers.

What Actually Differs Across Crypto Tax Reporting Regimes?

Once the country sections are read side by side, the divergences cluster in ten places:

• Provider scope — the US broker definition is built on possession of assets, while CARF and DAC8 use a functional service test.
• Reporting nexus — different rules decide which jurisdiction a provider files in.
• User scope — domestic and cross-border users can be treated differently, as the UK's inclusion of UK residents shows.
• Transaction scope — each framework classifies reportable activity in its own categories.
• Cost basis — central to US broker reporting, and largely absent from CARF-style aggregate reporting.
• Tax self-certification — the foundation of CARF and DAC8-style regimes, and not how the US model establishes status.
• Filing deadline — set by each domestic implementation.
• Exchange deadline — relevant mainly to the automatic exchange regimes.
• Technical format — filing portals and formats differ by jurisdiction.
• Penalties — domestic law determines enforcement in every case.

Similar data does not mean identical compliance obligations.

How to Determine Which Reporting Regimes Apply to One Crypto Business

The mapping exercise comes before any system design, and it runs in this order:

1. List the legal entities and the jurisdictions each one operates in.
2. Determine the reporting nexus for each regime, per entity.
3. Identify the customer and user populations, including where they are tax resident.
4. Identify which assets and transactions each applicable framework treats as reportable.
5. Record the first reporting period and the local filing deadline for each one.
6. Only then build a single operational reporting process across them.

Similar tax-reporting data can support multiple regimes, but local scope, classification, filing and deadline rules still need to be mapped separately. In practical terms, step five is the one most often skipped, and it is the one that sets every downstream date.

Once the map exists, the build is covered in our guide to multi-jurisdiction crypto tax-reporting infrastructure, and the international standard that three of these five regimes are modelled on is explained under OECD CARF reporting requirements.

Conclusion

Global crypto tax reporting is converging around greater tax transparency, but the operational obligation remains jurisdiction-specific. The US is the clearest reminder that convergence is not uniformity: its broker-reporting model asks a different set of questions, on a different schedule, from the CARF-based regimes running in parallel.

The working sequence for any business in more than one market is: market → framework → provider scope → reporting nexus → reporting period → filing deadline. Everything operational follows from those six answers, and none of them can be assumed from another jurisdiction's rules.

FAQ

Which Countries Require Crypto Tax Reporting From Businesses?

Obligations are already live in the United States under Form 1099-DA broker reporting, in the United Kingdom under domestic CARF, and across the EU under DAC8. Singapore's CARF rules cover 2027 as the first reporting year, and the UAE takes effect on 1 January 2027. Commitment elsewhere does not yet mean active reporting.

Is Crypto Tax Reporting the Same in Every Country?

No. Frameworks differ on which providers are in scope, where a provider has to file, which transactions are reportable, which reporting period comes first, what data must be submitted, when filing is due, and how penalties work. Two regimes can require overlapping data and still produce different reports on different dates.

Does the United States Use CARF for Crypto Reporting?

No, not as its primary current broker-reporting framework. The US uses Form 1099-DA broker reporting under domestic tax rules, which is built around brokers taking possession of customer assets and includes cost basis reporting. A CARF-compatible dataset does not satisfy US broker reporting on its own.

When Does UK CARF Reporting Start?

The UK rules apply from 1 January 2026, making 2026 the first reporting period. The first report, covering the 2026 calendar year, is due to HMRC by 31 May 2027. UK reporting covers users resident in the UK as well as users resident in other participating jurisdictions.

When Did EU DAC8 Crypto Reporting Start?

1 January 2026. That makes 2026 the first crypto reporting period under the Directive. Member States must exchange the information for that period by 30 September 2027, while the domestic deadline by which a provider files with its own tax authority is set nationally and can be earlier.

When Does Singapore CARF Reporting Start?

Singapore enacted its CARF Regulations in August 2026. The first reportable calendar year is 2027, the annual return is filed by 31 May of the following year, and the first international exchange of information is scheduled for September 2028. Due diligence work therefore has to be operational before 2027 opens.

When Does UAE CARF Reporting Start?

Domestic CARF implementation takes effect on 1 January 2027, making 2027 the first reporting year, with the first exchanges of information expected in 2028. The UAE signed the CARF Multilateral Competent Authority Agreement in September 2025, so this is an implementation timeline rather than a consultation.

Does a Crypto Company Need to Comply With More Than One Tax-Reporting Regime?

Potentially, yes. A multi-jurisdiction business can have separate obligations arising from where its entities are established, where each one has a reporting nexus, where its users are tax resident, and which activity each framework treats as reportable. Each regime is assessed on its own terms.

Are CARF and DAC8 the Same Thing?

No. CARF is the OECD international standard. DAC8 is an EU legal reporting framework aligned closely with CARF but with its own scope, procedures and enforcement rules. A business can build on a shared data foundation, but the two require separate legal mapping and separate reporting workflows.

Can One Reporting Dataset Be Used Across Several Jurisdictions?

A shared underlying data model helps, but it does not mean one report satisfies every regime. Different jurisdictions may require different classifications, data fields, aggregation methods, technical formats and deadlines — so the same validated dataset usually has to produce several different outputs.