Received a COP9 Letter From HMRC? The Critical Steps to Take in the First 60 Days
Receiving a Code of Practice 9 (COP9) letter from HMRC can be alarming, particularly when it raises concerns about suspected tax fraud. Whether you are a business owner, company director or individual taxpayer, understanding your options is essential.
If you receive a COP9 letter from HMRC, you have 60 calendar days from receiving the Contractual Disclosure Facility (CDF) offer to accept or reject it. If you choose to accept, you must also submit a valid Outline Disclosure within this period. Failing to respond correctly could lead to a criminal investigation.
At Fortis Tax, we specialise in HMRC tax investigations and dispute resolution, helping clients understand their position and respond appropriately to serious tax enquiries.
What Does Receiving a COP9 Letter Mean?
A COP9 letter means HMRC suspects deliberate tax fraud and is offering you an opportunity to disclose any wrongdoing through a civil investigation process.
This differs from a routine HMRC compliance check because the allegations involve potentially deliberate behaviour rather than simply careless mistakes.
Under COP9, HMRC offers access to the Contractual Disclosure Facility, allowing individuals to disclose deliberate tax irregularities.
If you accept the CDF, comply fully with its terms and make a complete disclosure, HMRC undertakes not to pursue a criminal investigation into the deliberate conduct disclosed. However, outstanding tax, interest and civil penalties may still apply.
What Should You Do Immediately After Receiving a COP9 Letter?
Your first priority should be to understand the allegations, preserve relevant records and obtain specialist tax investigation advice before deciding how to respond.
The initial steps include:
Check the deadline: Identify when you received the CDF offer and calculate the 60-day response period.
Preserve financial records: Retain relevant tax returns, accounting information, correspondence and electronic records.
Avoid making inaccurate statements: Do not submit speculative explanations or incomplete disclosures without appropriate advice.
Seek specialist representation: An experienced tax investigation adviser can assess your circumstances and explain the implications of accepting or rejecting the offer.
HMRC also requires any ongoing deliberate behaviour causing tax losses to stop immediately.
At Fortis Tax, we help clients assess the risks involved and develop an appropriate response strategy from the outset.
The First 30 Days: Assess Your Position and Gather Evidence
The early stages of a COP9 investigation should focus on understanding the circumstances that may have prompted HMRC's concerns.
This involves reviewing relevant financial records, identifying potential tax irregularities and establishing whether any inaccuracies resulted from deliberate conduct or genuine mistakes.
Specialist advice is particularly important because accepting the CDF involves admitting deliberate behaviour that caused a loss of tax.
Where you genuinely believe no deliberate tax loss occurred, rejecting the offer may be appropriate. However, this decision requires careful consideration because HMRC can pursue a criminal investigation following rejection.
Our team at Fortis Tax brings experience from both HMRC and the private sector, allowing us to assess complex tax disputes and provide clear, evidence-based guidance.
Days 30–60: Preparing Your Response to HMRC
As the deadline approaches, attention should turn towards finalising your decision and preparing the necessary documentation.
What Is an Outline Disclosure?
An Outline Disclosure is a formal explanation of the deliberate behaviour being disclosed under the Contractual Disclosure Facility.
It should identify the nature of the conduct, explain how tax losses arose and provide an honest account of the relevant circumstances.
Exact calculations are not always required at this initial stage, provided the disclosure meets HMRC's requirements. More detailed financial analysis may follow during the investigation.
However, providing misleading or incomplete information can jeopardise the protection offered by the CDF.
Can You Request More Time?
The 60-day response deadline can only be extended in exceptional circumstances.
You should therefore avoid assuming additional time will be granted and seek advice immediately if you are concerned about meeting the deadline.
What Happens If You Ignore a COP9 Letter?
Ignoring a COP9 letter does not make the investigation disappear. If you fail to respond within 60 days, HMRC will treat this as a decision not to cooperate with the CDF offer and may begin a civil or criminal investigation.
Similarly, submitting an acceptance without a valid Outline Disclosure will not satisfy the CDF requirements.
This is why early preparation matters. The first 60 days provide an important opportunity to understand your position and make an informed decision.
How Fortis Tax Can Help With a COP9 Investigation
At Fortis Tax, we specialise in complex HMRC tax investigations and dispute resolution.
Our experience combines both time as an HMRC Inspector of Taxes and specialist support in the private sector, including supporting many clients through the COP9 process and even rejection of the CDF, giving us valuable insights into how investigations are conducted and how HMRC evaluates evidence.
We provide specialist support with:
Assessing COP9 allegations and potential tax liabilities.
Advising on CDF acceptance or rejection.
Preparing Outline Disclosures and detailed disclosure reports.
Reviewing financial evidence and tax calculations.
Managing communications and negotiations with HMRC.
We work with business owners, high-net-worth individuals, company directors and professional advisers, providing practical guidance throughout the investigation process.
Get Specialist COP9 Advice Before the Deadline
Receiving a COP9 letter is serious, but understanding your options and responding appropriately can make a significant difference.
The key is to act promptly, preserve relevant evidence and obtain professional advice before making decisions that could have lasting financial or legal consequences.
Have you received a COP9 letter from HMRC? Contact Fortis Tax for a free, no-obligation initial consultation. We can help you understand the investigation, assess your options and approach the 60-day deadline with clarity and confidence.