COP9 Disclosure Report: What Happens After Your Outline Disclosure?

If you have received a Code of Practice 9 (COP9) letter from HMRC and entered into the Contractual Disclosure Facility (CDF), submitting your Outline Disclosure is only the beginning of the disclosure process.

The next stage is the Formal Disclosure, which may involve preparing a detailed COP9 Disclosure Report setting out your tax position, the circumstances surrounding the irregularities and the tax liabilities arising.

For someone who has never faced an HMRC tax investigation before, this can feel overwhelming. You may be dealing with years of financial records, bank statements, accounts, tax returns and transactions while trying to understand exactly what HMRC requires from you.

You do not have to navigate this process alone.

Our COP9 specialists can help you understand what is required, undertake a detailed review of your financial and tax affairs, prepare the necessary disclosure and deal with HMRC on your behalf.

What is a COP9 Disclosure Report?

A COP9 Disclosure Report is part of the Formal Disclosure process under the Contractual Disclosure Facility where HMRC requires a detailed report.

The purpose of the disclosure is to establish the correct tax position and provide HMRC with a complete, accurate, open and honest account of the relevant tax irregularities. HMRC’s guidance makes clear that the Formal Disclosure can involve supporting certificates and schedules, and that where a detailed Disclosure Report is required, it forms part of the process of settling the COP9 investigation.

There is no single standard report that will be appropriate for every COP9 case. The information required will depend on the circumstances of the individual investigation and the nature of the tax irregularities involved.

This is why specialist COP9 tax investigation advice can be so important.

What happens after the Outline Disclosure?

The Outline Disclosure is the initial stage of the CDF process. HMRC’s current COP9 guidance states that the Outline Disclosure must be made within 60 days and must cover the deliberate behaviour that caused a loss of tax, as well as relevant non-deliberate irregularities. The subsequent Formal Disclosure is made within a period agreed with HMRC.

The Formal Disclosure is considerably more detailed.

Depending on your circumstances, it may require a forensic examination of financial information covering multiple tax years. The objective is to establish what happened, identify the tax implications and provide HMRC with the information necessary to determine the liabilities arising.

What does a COP9 forensic review involve?

A specialist review of your affairs may involve examining a wide range of financial and tax information, including:

• Bank accounts and financial transactions
• Personal and business accounting records
• Previous tax returns and tax computations
• Income and expenditure
• Assets and liabilities
• Property transactions
• Investments and other financial interests
• Loans, transfers and payments
• Offshore accounts, assets or income where relevant
• VAT, PAYE, Corporation Tax, Income Tax or Capital Gains Tax matters
• Transactions involving companies, partnerships or other entities
• Previous disclosures or correspondence with HMRC

The purpose is not simply to find errors.

A proper COP9 forensic review needs to establish the underlying facts, identify the relevant tax years, understand the nature of the behaviour involved and calculate the resulting tax position.

HMRC’s own guidance states that a Disclosure Report should contain sufficient information to enable the tax position to be established, and HMRC’s internal guidance recognises that Disclosure Reports are commonly prepared in CDF cases.

Why a COP9 specialist can make a difference

A Fresh Forensic Review: Identifying the Root Cause

A Code of Practice 9 investigation is very different from an ordinary HMRC tax enquiry.

COP9 is used by HMRC in selected cases where it suspects tax fraud. The CDF gives an individual the opportunity to make a complete disclosure under a contractual arrangement. In return, where the CDF requirements are complied with, HMRC undertakes not to commence a criminal investigation into the suspected fraud connected with the deliberate behaviour disclosed.

That makes the accuracy and completeness of the disclosure extremely important.

HMRC’s guidance specifically warns that an incomplete Outline Disclosure, false statements or materially false documents can have serious adverse consequences, including the possibility of criminal investigation in appropriate circumstances.

Whether a Code of Practice 9 (COP9) investigation stems from inadvertent oversight or historical reporting discrepancies, introducing an independent, specialist pair of eyes is critical. Standard compliance accounting often relies on generalized frameworks that can inadvertently misinterpret rapidly evolving tax legislation, complex cross-border transactions, or technical reporting rules.

Our forensic team conducts a thorough, objective review of your historical filings and prior advisory history. By isolating whether past understatements arose from technical misalignments, misapplied legislation, or administrative errors, we establish the precise facts needed to present an accurate, defendable Formal Disclosure Report to HMRC.

This is not something you should feel you have to work through on your own.

What tax liabilities can a COP9 investigation involve?

A COP9 investigation can involve more than simply calculating one outstanding tax bill.

Depending on the circumstances, the investigation may require consideration of several tax years and different taxes, together with interest and penalties.

The eventual liability will depend on the facts of the case, the tax involved, the periods concerned and the nature of the behaviour.

A specialist COP9 accountant can undertake the necessary calculations and help establish an accurate tax position before the Formal Disclosure is submitted.

Where appropriate, we can also liaise directly with HMRC and its Fraud Investigation Service (FIS), deal with questions and requests for information, and represent you during the investigation.

What happens after the COP9 Disclosure Report is submitted?

Submitting the Disclosure Report does not necessarily mean the investigation is immediately finished.

HMRC will examine the disclosure and may raise questions, request additional information or seek clarification about particular transactions or calculations.

HMRC’s internal guidance provides for an initial examination of Disclosure Reports and states that investigators should identify missing information and begin examining the report.

This is another stage where having an experienced COP9 specialist dealing with HMRC can make the process considerably easier.

Rather than receiving an unexpected letter from HMRC and having to work out how to respond yourself, you can have a specialist review the request, establish what information is being sought and prepare an appropriate response.

Can a COP9 specialist negotiate with HMRC?

Yes. An experienced COP9 accountant or tax investigation specialist can communicate with HMRC on your behalf and deal with the technical aspects of the investigation.

This can include discussing the disclosure, responding to HMRC enquiries, explaining calculations, providing supporting information and addressing questions about the tax liabilities arising.

Where penalties are being considered, the circumstances and level of cooperation can also be relevant. HMRC’s COP9 guidance states that cooperation is taken into account when assessing civil penalties.

No responsible adviser can guarantee a particular penalty outcome or guarantee that HMRC will accept every aspect of a disclosure. The aim is to ensure that your position is accurately established and presented to HMRC with appropriate professional support.

You don’t have to face a COP9 investigation alone

If you are reading this because HMRC has issued you with a COP9 letter, you may be feeling anxious about what happens next.

You may be worried about what HMRC already knows.

You may be concerned about how much tax you could owe.

You may have years of records that you do not know how to interpret.

Or you may simply be frightened of making the wrong decision.

Those concerns are understandable.

A COP9 investigation can involve highly sensitive financial information and potentially significant tax liabilities. It can also be difficult to discuss the circumstances with someone for the first time.

Our role is not to judge you. Our role is to understand your circumstances, establish the facts and help you deal with HMRC professionally.

Our COP9 tax specialists can help you understand the Formal Disclosure process, undertake the necessary forensic review, calculate your tax position, prepare the required disclosure and communicate with HMRC throughout the investigation.

Received a COP9 letter? Speak to a specialist

If you have accepted the Contractual Disclosure Facility, are preparing your Formal Disclosure or have been asked by HMRC to provide a detailed COP9 Disclosure Report, obtaining specialist advice before proceeding can be extremely valuable.

You do not need to understand every aspect of the CDF, Disclosure Report and HMRC investigation before contacting us.

That’s what we are here for.

We understand how daunting it can be to face an HMRC investigation of this nature. Our approach is confidential, professional and focused on helping you understand your position and deal with the investigation properly.

If you are facing a COP9 investigation or need help preparing your Formal Disclosure, contact our COP9 specialists today.

The sooner you obtain specialist advice, the sooner you can understand what is required and begin dealing with HMRC with professional support.

Frequently Asked Questions About COP9 Disclosure Reports

What is a COP9 Disclosure Report?

A COP9 Disclosure Report is a detailed report prepared as part of the Formal Disclosure process under the Contractual Disclosure Facility where a detailed report is required. It sets out relevant financial and tax information and helps establish the correct tax position arising from the matters disclosed.

How long do I have to complete a COP9 Disclosure Report?

The initial Outline Disclosure must be made within the 60-day period specified by HMRC. The Formal Disclosure is subsequently made within a period agreed with HMRC. The timescale for the detailed disclosure therefore depends on the individual case.

Do I need a COP9 accountant?

You are not required to appoint a COP9 accountant, but a COP9 investigation is a specialist and potentially serious HMRC process. Professional advice can help you understand the CDF, establish your tax position, prepare the disclosure and communicate with HMRC.

Can a COP9 specialist deal with HMRC for me?

A specialist adviser can communicate with HMRC on your behalf, prepare responses, assist with the disclosure process and represent you in appropriate dealings with HMRC.

Does the CDF protect me from criminal prosecution?

The CDF provides HMRC’s contractual undertaking not to commence a criminal investigation into the suspected fraud connected with the deliberate behaviour disclosed, provided the CDF requirements are complied with. This protection is conditional and does not extend to unrelated frauds, other criminal offences or other individuals.

What should I do if I have received a COP9 letter?

If you have received a COP9 letter, do not ignore it. The CDF process has strict requirements and the initial response period is important. Consider obtaining specialist COP9 advice before making substantive decisions or submitting your disclosure to HMRC.