Learn more about Company Tax Investigations

We're here to help you!

HMRC Investigations into Company Tax Returns

Full Defence & Expert Support for Corporation Tax Enquiries

HMRC frequently opens investigations into company tax returns, ranging from small “aspect enquiries” to intensive “full enquiries” that examine every part of a business’s accounts. A company tax investigation is disruptive, time-consuming and risky if handled incorrectly, and the financial consequences can stretch back many years. Tax Guard represents companies and directors facing HMRC enquiries. We take over all communication, protect your legal position, and negotiate directly with HMRC to secure the best possible outcome.

Types of HMRC Corporation Tax Investigations

HMRC enquiries into limited companies broadly fall into two categories:

Aspect Enquiries

HMRC focuses on a specific entry or area of the corporation tax return. Common targets include:

Expense claims
Directors’ remuneration
Loan accounts
Disallowed deductions
Capital allowances
Research & Development claims
Aspect enquiries are usually quicker and more contained — if managed properly.

Full Enquiries

HMRC reviews every part of the company tax return, accounts, and supporting records.

This includes:

Sales, purchases and bank records
Cash controls
Accounting adjustments
Balance sheet movements
Director transactions
Inter-company arrangements
Full enquiries are comprehensive and often lead to additional personal tax or VAT/PAYE enquiries.

What HMRC Requests During a Company Tax Investigation

In a full enquiry, HMRC typically asks for:

Complete business books and records
VAT returns, payroll records, and CIS records
Bank statements and loan documentation
Copies of financial accounts
Supporting evidence for expense claims
Detailed explanations of business processes
HMRC will also request a director interview, usually face-to-face. You should never attend an HMRC meeting without representation. Tax Guard normally attends these meetings instead of the directors, preventing HMRC from fishing for information or asking questions outside their legal scope.

When HMRC Tries to Investigate Directors Personally

During company tax investigations, HMRC often attempts to extend the enquiry into the personal tax affairs of directors. They may request:

Personal bank statements
Details of private income
Personal loan information
Explanations relating to lifestyle or spending
However, HMRC does not automatically have the right to access a director’s personal financial information during a company investigation. This is a common abuse of process. Tax Guard regularly pushes back on inappropriate requests and prevents HMRC from overstepping their powers.

How Far Back Can HMRC Go?

If discrepancies are found, HMRC can adjust: :

Why HMRC Opens a Company Tax Investigation

Triggers include:

Mismatches between corporation tax, VAT, and PAYE data
Large or unusual entries on the CT600
Loss claims
R&D claims
Late filings
Industry benchmarking discrepancies
Anonymous reports
Random selection
Full enquiries often expand into VAT, PAYE, and CIS if HMRC identifies cross-tax risks.

Consequences of a Company Tax Investigation

HMRC may seek:

Additional corporation tax
Disallowed expenses
Adjustments to directors’ loan accounts
Benefit-in-kind charges
PAYE/NIC liabilities
VAT re-assessments
Personal tax adjustments for directors
Interest and penalties up to 100%
An unrepresented company is far more likely to face higher assessments and wider investigations.

How Tax Guard Protects You

We defend companies throughout the entire HMRC investigation process. Our team includes specialists who understand HMRC enquiry tactics, legal powers, and limitation rules.

1.We take over all communication with HMRC.

You no longer deal with HMRC directly, we handle everything.

2.We prevent overreach and protect your legal rights.

We ensure HMRC stays within the limits of their statutory powers and challenge unlawful requests.

3.We examine the accounts before HMRC does.

. Detecting issues early allows us to manage the narrative and control the enquiry.

4.We prepare all information strategically.

Only the legally required documents are provided, nothing more.

5.We attend HMRC meetings on your behalf.

This stops HMRC using meetings to pressure, mislead, or gather unintended disclosures.

6.We negotiate the lowest possible tax and penalty position.

Our goal is to reduce tax adjustments, lower penalties, and restrict the number of years HMRC can review.

7.We stop personal tax enquiries unless fully justified.

Directors are protected from unnecessary or aggressive HMRC requests.

Speak to Tax Guard

If HMRC has opened an enquiry into your company tax return, or you believe one may be coming, get specialist help immediately. Early intervention dramatically reduces risk and financial exposure.

028 9335 0290

Speak to our experts on the phone now.