Tax Investigations & Disputes
When HMRC comes knocking, you need more than answers — you need a strategy.
When HMRC Knocks at Your Door
An HMRC enquiry can feel overwhelming. Letters arrive unexpectedly, deadlines are strict, and the risks — financial, reputational, and personal — are serious. Without the right guidance, what begins as a routine check can quickly escalate into a full investigation.
At Citiline Accountants, this is where we excel. With over 30 years’ experience, including time spent inside HMRC, we understand the process from both sides. That insight allows us to cut through complexity, manage the pressure, and position your case for the best possible outcome.
Why Businesses Trust Citiline
Most firms provide general tax compliance. Few specialise in investigations. For us, this is a core discipline. Clients choose us because we combine deep technical knowledge with insider perspective. We don’t just respond to HMRC; we anticipate their approach, challenge their assumptions, and negotiate firmly on your behalf.
Types of HMRC Investigations We Handle
Compliance Checks: Routine reviews of tax returns and records.
Aspect Enquiries: Focused questions on specific tax areas.
Full Investigations: Wide-ranging reviews of business or personal tax affairs.
Voluntary Disclosures: Correcting errors and minimising penalties.
Code of Practice 9 (COP9): High-stakes cases involving suspected fraud.
Negotiations & Settlements: Securing fair outcomes and closure.
Taking Control of the Process
Every case is unique, but our method is consistent. We begin with a clear assessment of the risks, then build a tailored strategy that balances compliance with a strong defence. From there, we take over communication with HMRC and work towards resolution — aiming for swift closure with minimal disruption to your life or business.
Case Study: £472,000 Saved in a VAT Dispute
A client faced an HMRC investigation into the ratio of VATable and non-VATable goods sold in their business. HMRC’s assessment produced a liability of £700,000, a sum that would have placed the company under severe financial strain.
We carefully examined HMRC’s calculations, identified flaws in their approach, and presented a strong technical defence. After detailed negotiations, we succeeded in reducing the liability by £472,000, bringing the final settlement down to just over £228,000.
This result highlights the difference that specialist representation can make in the outcome of a tax investigation.
What Makes Citiline Different
What sets us apart is not only our technical expertise, but our singular focus. Tax investigations are our speciality. Our background inside HMRC gives us a unique advantage, while our client-first approach ensures you feel supported at every step.
We don’t just defend you against HMRC — we give you clarity, confidence, and control.
Don’t Wait Until It Escalates
If you’ve received a letter from HMRC, don’t wait. The sooner we act, the stronger your defence.
Contact us today for a confidential consultation and put your case in the hands of true specialists.
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Turn your ideas into tax-free cash — we unlock hidden R&D claims with zero hassle, maximising your refund and your edge.
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Recover thousands in missed relief — we dig deep into your assets to uncover powerful deductions others overlook.
International Tax
Grow globally, pay smart — we structure your cross-border operations to cut risk, reduce double tax, and unlock global profits.
