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Each month, we leverage data from our Horizon Scanning Regulatory Deadlines Calendar to bring you a glimpse of the key response deadlines and legislation effective dates coming up, so you can plan and take action around some of the most important regulatory developments unfolding right now.

In December, there are 58 regulatory deadlines on the horizon — with 16 key consultation periods coming to an end and requiring a response, and 25 actionable deadlines to be aware of coming into effect.

What are the regulatory deadlines to watch in December?

Brazil

On November 18, 2025, the Central Bank of Brazil (BCB) issued Resolution No. 524, which amends rules governing the Instant Payment System (SPI) as they relate to the settlement of transactions and prevention of fraud. The new resolution mandates that direct participants in the SPI adopt internal mechanisms to identify, in real time and based on historical and behavioral patterns, potentially fraudulent transactions in their Instant Payment (PI) Accounts (i.e., special-purpose accounts that direct participants maintain with the BCB).

Furthermore, direct participants must monitor communications regarding atypical transactions and minimum balance thresholds in their PI Accounts. The resolution also mandates that direct participants promptly activate manual blocking or unblocking of the issuance of instant payment orders from their PI Account through the SPI module of SPB-Web. The resolution takes effect on December 1, 2025.

UK

On November 12, 2025, the HM Revenue & Customs (HMRC) published a policy paper on the anti-money laundering (AML) supervision fees.

On July 31, 2025, HMRC launched a consultation on the anti-money laundering (AML) supervision fees. In response to the consultation, HMRC has amended its proposals:

• Rather than increasing the fit and proper test fee from £150 to £700 (as set out in the initial proposal), this will instead be raised to £500.
• Rather than the reintroduced application fee being £400 (as set out in the initial proposal), this will be set at £300. HMRC will also refund this fee to businesses eligible for the small business fee.
• HMRC will increase the premises fee from £300 to £400 (unchanged from the initial proposal).
• HMRC will rationalise the sanctions administration charge to a common set value of £2,000 (unchanged from the initial proposal).

HMRC will implement the revised fees on December 1, 2025.

European Union

On November 26, 2025, the European Commission published Implementing Regulation (EU) 2025/2263, amending Implementing Regulation (EU) 2015/2378, in the Official Journal of the European Union. Implementing Regulation (EU) 2025/2263 provides the standard forms and computerised formats for the mandatory automatic exchange of information on reportable crypto-assets, the communication of the yearly assessment and the list of statistical data to be provided by member states under Council Directive 2011/16/EU.

Council Directive (EU) 2023/2226 amends Council Directive 2011/16/EU to provide for the mandatory automatic exchange of information to be reported by reporting crypto-asset service providers (CASPs). The amending regulation lays down the practical arrangements to facilitate the communication of information.

The regulation enters into force on December 16, 2025, 20 days after its publication in the Official Journal of the European Union.

Australia

On 19 September 2025, the Treasury Laws Amendment (Payments System Modernisation) Bill 2025 received Royal Assent, becoming the Treasury Laws Amendment (Payments System Modernisation) Act 2025. The Act will commence on 20 December 2025, three months after receiving Royal Assent. The legislation modernises the Payment Systems (Regulation) Act 1998 and expands regulatory coverage to new and emerging payment services and strengthens the enforcement framework for payment system participants.

Key provisions include:

• Updating the definitions of “payment system” and “participant” to capture digital wallets, buy now pay later (BNPL) services, and stablecoin-based payment platforms.
• Expanding the Reserve Bank of Australia’s (RBA) powers to regulate and oversee payment systems.
• Introducing a civil penalty framework and increasing criminal penalties for breaches of the Act.
• Granting the Treasurer powers to designate special payment systems where issues of national interest arise.
• Establishing a framework for enforceable undertakings by payment system participants.

The Act will enter into force on December 19, 2025, three months after receiving Royal Assent.

U.S.

On July 4, 2025, President Trump signed HB 1 into law, following its passage by the United States legislature.

While the new law is primarily intended to secure tax cuts and reform international tax rules, HB 1 also provides several remittance tax requirements, including but not limited to:

• Excise Tax on Cross-Border Remittances: On electronic transfers sent after the effective date, a 1% excise tax will be applied.
• Estimated Revenue Projections: The law predicts approximately $9–10 billion over a decade from this provision.
• Collection Mechanisms: Taxes are paid by the sender and collected by remittance providers, who are responsible for reporting and compliance.

The new law takes effect on December 31, 2025.

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The ��������� Payments Compliance Horizon Scanning tool shows you real-time updates on regulatory deadlines and trends across 140+ global jurisdictions, including all US states, at the click of a button. Its Regulatory Deadlines Calendar feature sets out effective dates for published legislation, closing dates for consultation periods on proposed regulatory developments, and deadlines for specific requests for information by regulatory authorities.��

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We’ve only shown you a snapshot of November’s deadlines.

Want to see them all? Book a demo with a member of our team, who can show you the full Regulatory Deadlines Calendar for this month.��

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