Opening investigation review
We analyse the HMRC letter, powers relied upon, deadlines and likely scope before substantive correspondence begins.
An HMRC investigation can range from a focused enquiry into one entry on a tax return to a much wider review involving several taxes, years, businesses or connected individuals. The first response should therefore be based on the actual letter, statutory position and records rather than assumptions about why HMRC has opened the case.
We begin by identifying the type of investigation, HMRC's stated concerns, the statutory deadline and the records that genuinely answer those concerns. Where Fraud Investigation Service is involved, the distinction between a standard enquiry, COP8 and COP9 is particularly important.
Please give us the type of tax, HMRC deadline and a brief description. Sensitive documents can follow through the secure onboarding process.
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The opening letter, statutory basis and deadline come before calculations. The correct response depends on what HMRC is actually investigating and which powers or procedures it is using.
A response suitable for an ordinary compliance check may be completely inappropriate for a COP8 or COP9 investigation. The scope, behaviour allegation, information requested and potential tax exposure all need to be separated before substantive representations are made.
The engagement can cover a single technical response or the management of a wider investigation from opening correspondence through to settlement or appeal.
We analyse the HMRC letter, powers relied upon, deadlines and likely scope before substantive correspondence begins.
Requested information is matched to the issues under enquiry so that responses are complete without becoming unnecessarily broad.
Where figures are disputed, accounts, returns, bank records and supporting evidence are reconciled to establish the correct liability.
The facts behind any reasonable-care, careless or deliberate behaviour allegation are reviewed separately from the tax calculation.
Issues, documents and likely questions can be prepared before meetings with the investigating officer.
Tax, interest, penalties and any disputed matters are reviewed before a settlement or appeal position is agreed.
The investigation is managed in stages so that factual reconstruction, technical analysis and correspondence remain controlled.
We identify the investigation route, issues, deadlines and immediate actions.
Returns, accounts, documents and third-party records are reconciled around the disputed issues.
Technical explanations and calculations are prepared from the evidence rather than speculation.
The final tax, interest and penalty position is reviewed before settlement, review or appeal.
The terminology in HMRC's letter matters. COP8 and COP9 are Fraud Investigation Service procedures and should not be treated as ordinary enquiry correspondence.
Do not assume the investigation is limited permanently to the issue HMRC identified in its first letter. In serious cases HMRC can expand its enquiries where further issues emerge, so factual consistency across returns, accounts and correspondence matters.
Official Fraud Investigation Service guidance for civil investigations where COP9 is not used.
Official COP8 guidance ↗Official HMRC guidance covering the civil investigation-of-fraud procedure and the Contractual Disclosure Facility.
Official COP9 guidance ↗The correct specialist page depends on whether HMRC is investigating, the taxpayer is making a disclosure, or a formal decision needs to be challenged.
You can, but serious or technically complex enquiries benefit from reviewing the scope and evidence before substantive explanations are given. A poorly framed first response can create avoidable disputes later.
No. HMRC carries out many compliance checks that do not allege fraud. COP8 and COP9 are specialist Fraud Investigation Service procedures and carry different implications.
HMRC has statutory information powers in appropriate circumstances. Whether a particular request is relevant and within scope should be reviewed against the investigation and applicable powers.
Yes. Depending on the enquiry route, behaviour and facts, HMRC can investigate multiple periods and taxes.
Penalty calculations can take account of behaviour and the quality of disclosure and cooperation, subject to the statutory penalty regime applying to the case.
Many formal decisions and assessments carry appeal or review rights. The decision letter should be checked immediately because the normal appeal period is often 30 days.