Understanding HMRC Civil Tax Investigations: COP8 and COP9 Explained
HMRC’s Fraud Investigation Service (FIS) is responsible for conducting serious tax investigations when large amounts of tax are at risk or when tax fraud is suspected. These investigations are significantly more detailed and intensive than standard compliance checks. They often last for years and can place businesses and individuals under considerable pressure.
The two primary types of civil tax investigations carried out by HMRC’s FIS are Code of Practice 9 (COP9) and Code of Practice 8 (COP8). While both are serious, they have distinct purposes and implications.
Why HMRC’s Serious Investigations Matter
Unlike routine compliance checks, COP8 and COP9 investigations require significant HMRC resources. FIS investigators typically handle fewer than ten cases at a time, compared to HMRC officers in wealthy and mid-sized business compliance (WMBC) and individuals and small business compliance (ISBC), who may be managing 30 to 40 cases simultaneously.
The purpose of these investigations is to recover unpaid taxes, plus interest and penalties. In some cases, allegations of dishonesty can lead to reputational damage if HMRC decides to name and shame taxpayers.
COP9 Investigations: Tax Fraud Allegations
HMRC’s Code of Practice 9 (COP9) is used when HMRC suspects tax fraud. The investigation starts with a letter explicitly challenging the taxpayer regarding dishonesty or fraudulent intent.
How the Process Works:
- Taxpayers are given 60 days to admit tax fraud at a high level.
- They must fully disclose all details later, including income, profits, and tax liabilities.
- They are responsible for commissioning a detailed disclosure report, usually prepared by a specialist tax investigations advisor.
- If they comply, they avoid criminal prosecution but must settle outstanding tax, interest, and penalties.
Consequences of COP9 Investigations:
- A full disclosure report is expected, detailing when, why, and how the fraud occurred.
- HMRC expects cooperation, including making tax payments on account during the process.
- If the taxpayer rejects HMRC’s offer to disclose tax fraud, the investigation proceeds similarly to COP8, with HMRC gathering evidence independently.
COP8 Investigations: Large Tax Risks Without Immediate Fraud Allegations
HMRC’s Code of Practice 8 (COP8) applies to cases involving large amounts of tax at risk but without immediate allegations of fraud.
COP8 is commonly used to investigate:
- Tax avoidance schemes or bespoke tax planning.
- Historic tax risks uncovered through HMRC intelligence.
- Situations where HMRC believes it has made a “discovery” allowing them to challenge earlier tax returns.
Key Differences from COP9:
- COP8 does not automatically assume tax fraud.
- Taxpayers are investigated from the outset, with HMRC gathering evidence and verifying information.
- There is no formal disclosure process like in COP9, making it harder for taxpayers to control the narrative.
- COP8 cases often involve third-party evidence gathering, which can lead to reputational concerns for businesses and individuals.
Comparing COP9 and COP8 Investigations
| Investigation Type | COP9 | COP8 |
|---|---|---|
| Main Focus | Tax fraud | Large tax risks (not necessarily fraud) |
| HMRC Allegation | Dishonesty or fraudulent intent | Large tax liability concerns |
| Taxpayer’s Role | Can voluntarily disclose fraud | HMRC gathers evidence independently |
| Process | Taxpayer submits a full disclosure report | HMRC requests records, issues formal notices |
| Potential Outcomes | Immunity from criminal prosecution | Can escalate to fraud investigation if HMRC finds evidence |
| Penalties | Can be severe, based on fraud | Typically lower but still significant |
COP9 cases are often more alarming because taxpayers are accused of deliberate misconduct, while COP8 cases may initially appear routine but can become increasingly serious over time.
HMRC’s Recent Investigation Trends: Key Statistics
HMRC has been increasing its focus on COP8 and COP9 investigations. The following statistics highlight investigation activity over the past six years:
COP8 Investigations
| Year | Cases Opened | Cases Closed | Tax Recovered (£m) |
|---|---|---|---|
| 2018-19 | 258 | 380 | £118.5m |
| 2019-20 | 271 | 328 | £115.2m |
| 2020-21 | 352 | 240 | £56.0m |
| 2021-22 | 176 | 279 | £70.2m |
| 2022-23 | 669 | 535 | £79.1m |
| 2023-24 | 212 | 268 | £83.2m |
COP9 Investigations
| Year | Cases Opened | Cases Closed | Tax Recovered (£m) |
|---|---|---|---|
| 2018-19 | 438 | 512 | £95.8m |
| 2019-20 | 425 | 528 | £121.3m |
| 2020-21 | 363 | 540 | £99.0m |
| 2021-22 | 341 | 401 | £104.3m |
| 2022-23 | 361 | 592 | £147.3m |
| 2023-24 | 268 | 618 | £338.4m* |
*HMRC reported that the COP9 yield for 2023-24 was significantly higher due to a single large settlement worth £652.6 million (not included in the £338.4m figure).
Key Trends
- There was a major increase in COP8 investigations in 2022-23, nearly quadrupling from the previous year.
- The number of new COP9 cases declined in 2023-24, but the tax recovered was substantially higher.
- COP9 investigations generated much higher penalties, reflecting the severity of tax fraud cases.
Practical Considerations for Businesses and Individuals
Given HMRC’s increasing focus on recovering tax from high-value cases, businesses and individuals should be prepared to:
- Seek Expert Advice Early – Whether facing COP8 or COP9, engaging a tax investigations specialist can reduce risk and limit penalties.
- Cooperate with HMRC – In COP9 cases, full disclosure is often the best approach to secure reduced penalties.
- Be Aware of Third-Party Investigations – In COP8 cases, HMRC frequently approaches banks, suppliers, and customers for information.
- Understand the Risks of Non-Compliance – Refusing to engage with HMRC can lead to higher penalties and prolonged investigations.
- Monitor HMRC’s Changing Strategy – The increase in COP8 cases suggests HMRC is targeting tax planning strategies more aggressively.
Final Thoughts: How to Handle a Serious HMRC Investigation
COP8 and COP9 investigations are among the most serious tax investigations conducted by HMRC. They require a strategic approach to minimise financial exposure and reputational damage.
While COP9 offers immunity from criminal prosecution in exchange for full disclosure, COP8 investigations often carry significant tax liabilities and penalties without immediate fraud allegations.
Need Help with an HMRC Investigation?
If you have received a COP8 or COP9 notice, Merranti Accounting can provide expert guidance. Our team of tax investigation specialists can help:
- Assess your position and advise on the best course of action.
- Prepare full disclosures and negotiate with HMRC on your behalf.
- Manage risk to ensure the lowest possible penalties.
Contact us today for confidential advice on handling serious tax investigations.
