Getting Ready for CARF: A Practical Compliance Checklist for Financial Institutions

"The days are long, but the years are short”.

Two things make that painfully true: watching your kids grow up… and watching tax regulations come into force.

The OECD first approved the Crypto‑Asset Reporting Framework (CARF) back in 2022, yet for many it still feels new. And while it officially takes effect for early adopters with first reporting in 2027, based on 2026 activity, there’s a lingering sense that CARF is still a far‑off hurdle.

It isn’t.

We’re already at that hurdle and now is the time to take the first step. To help lighten that burden, here’s a practical checklist of the key actions every CASP and impacted institution should be taking now to prepare for CARF and build a fully compliant operating model.

Understand the Regulations & Build Internal Policies and Systems

The starting point is simple: read the rules. The CARF regulations and XML schema spell out exactly what must be collected, validated, and reported.

The framework defines the core pillars of compliance:

• Service provider analysis: Determine whether you are a Crypto‑Asset Service Provider (CASP) and therefore in scope.

• User due diligence: Know your users and collect CARF‑specific self‑certifications.

• Monitoring for change‑in‑circumstance: Ensure self‑certifications remain reliable over time.

• Reporting: Understand precisely which data points flow into the reporting schema.

Taken together, these inform the policies, procedures, and system requirements you’ll need to implement, as well as the gaps you must close.

Map your Jurisdictional Footprint

CARF is an OECD framework, but the real detail lies in domestic implementation. Each jurisdiction will issue its own rules, guidance, timelines, and schema nuances.

If you operate across borders, this step becomes even more critical. You’ll need to identify:

• Where you are resident or have reporting nexus

• How each local authority has implemented CARF

• What divergences exist from the OECD baseline

• How these differences impact your operating model

Some examples already emerging:

• UK: Reporting includes both domestic and foreign users.

• Brazil:Monthly reporting, not annual.

• South Africa: You are in scope if you provide CARF‑relevant services to a South African user, even from abroad.

These variations must be documented clearly in policies and operationalized consistently.

Implement a CARF Specific Self-Certification Process

CARF’s user due diligence requirements look familiar to anyone used to CRS but there are key differences that make “just adapting” a CRS form risky.

One notable example:
Under CARF, controlling person information is required for all professionally managed investment entity users, regardless of their jurisdiction of residence. Under CRS, this applied only where the entity was resident in a non‑participating jurisdiction.

Because of this and other differences, a dedicated CARF self‑certification is often the cleaner, safer option.

Where institutions offer both CARF and non‑CARF products, it may even be operationally easier to separate them at the entity level to avoid excessive documentation burdens for users.

Ensure Systems Can Capture All In-Scope Transactions

CARF introduces a fundamental shift: transaction‑based reporting, not account‑level balances.

This sounds small, but operationally it is significant. Systems must be able to capture, store, and output each reportable transaction throughout the year, including:

• Crypto‑to‑fiat conversions

• Crypto‑to‑crypto exchanges

• Relevant crypto transfers (e.g., between wallets)

• Certain retail crypto transactions

This often requires new data models, new pipelines, and new controls. The earlier this is assessed, the easier the build.

Validate Data Quality & Prepare for Reporting Schema Requirements

As always, data quality is everything. In a regime as technical as CARF, simple formatting errors, missing fields, or mismatched records can be the difference between full compliance and regulatory failure.

Most service providers are already gravitating toward automation and validation tools to reduce human error, accelerate processing, and maintain auditability throughout the lifecycle.

With reputational and financial risks so high, manual, ad‑hoc approaches simply aren’t viable.

How TAINA can help you

CARF compliance starts at onboarding and that’s exactly where TAINA’s automated tax validation platform excels.

TAINA supports CASPs by:

• Validating CARF self‑certifications for completeness and correctness

• Cross‑checking data against books and records

• Applying consistent, automated rules for operational efficiency

• Maintaining all required reportable data in a secure, auditable environment

• Monitoring for change‑in‑circumstance across user populations

• Exporting data for reporting in formats compatible with your downstream systems

If you’d like to see how TAINA can simplify and streamline your CARF compliance journey, get in touch or request a demo to see it in action.

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