Inheritance Tax is not only a challenge for the extremely wealthy. With threshold freezes & massive legislative changes targeting business owners and …
HMRC Tax Investigation Help & Defence
Received an HMRC notice or a nudge letter? The first 48 hours are critical.
An HMRC investigation is more than a routine check. It is a direct challenge to your financial integrity. Whether you are facing a standard compliance enquiry or a serious fraud investigation under Code of Practice 9, you need a specialist to handle the pressure, the correspondence, and the negotiation. If you need immediate HMRC tax investigation help, IBISS & CO act as your formal representative. We stop HMRC from overstepping their powers, protect your assets and work to resolve the enquiry as quickly and cost-effectively as possible.
Are You Facing One of These Triggers?
HMRC uses the advanced Connect data system to flag inconsistencies. We provide immediate defence for:
HMRC Nudge Letters
Specific warnings regarding undeclared rental income (Let Property Campaign) or offshore assets.
Code of Practice 9 (COP9)
Suspected serious tax fraud. We secure your immunity from prosecution through the Contractual Disclosure Facility (CDF).
Code of Practice 8 (COP8)
nvestigations into complex tax avoidance schemes or large-scale tax disparities.
VAT & Corporate Audits
Routine or targeted checks that threaten your business cash flow.
Why Choose IBISS & CO for Your Tax Defence?
We don’t just manage files; we protect people. Our reputation for integrity with HMRC inspectors allows us to negotiate from a position of strength.
- Direct Representation: We become your sole point of contact. You will never have to speak to an HMRC inspector directly.
- Penalty Mitigation: By managing your disclosure professionally, we frequently reduce HMRC penalties by up to 70% or have them suspended entirely.
- Technical Expertise: Our team includes specialist tax investigation accountants who understand the HMRC Compliance Handbook better than the inspectors themselves.
- Fixed Fee Certainty: We provide transparent, fixed-fee quotes for our defence services, so you don't have to worry about an open-ended hourly bill.
High-Stakes Defence
Expert Support for COP9 & Serious Fraud Enquiries
If HMRC has issued a COP9 notice, they believe you have acted deliberately. This is the highest stakes enquiry a taxpayer can face.
Our specialists lead you through the Contractual Disclosure Facility (CDF). We make sure your disclosure is full, accurate and submitted within the strict 60 day window, securing your safety from criminal charges.
Cross Border Authority
UK Tax help for Dubai Based Expats
HMRC is currently targeting UK citizens living in the UAE who hold UK property or business interests. As a firm with offices in both London and Dubai. We are positioned to handle cross border investigations. Our team resolves your UK tax issues locally in Dubai or from our UK headquarters, making sure your international assets remain protected.
4 step Process to Handle HMRC Tax Investigation
01
Risk Assessment
Review the HMRC notice to identify the exact scope of the enquiry.
02
Data Pre Audit
Check your records against HMRC Connect data to find discrepancies before they do.
03
Strategic Disclosure
We manage all correspondence & meetings, control the narrative of the investigation.
04
Final Settlement
We negotiate the final tax, interest and penalty position to make sure the best possible outcome for you.
Take Control of Your Investigation Today
The longer an HMRC enquiry remains open the more expensive it becomes. Do not let a letter turn into a legal crisis. Contact our specialists in London Tooting, Barking or your nearest office for a confidential assessment of your case.
Note: If you have already received a final decision from HMRC and wish to contest the amount owed, please visit our Tax Dispute Resolution page.
Frequently Asked Questions
How can IBISS & CO help with HMRC tax investigation services?
We offer full representation, handle all HMRC correspondence & audits to save your rights and minimize penalties. Our team manages the process from initial notice to final settlement.
How do I find a tax investigation expert for my case?
Look for specialists with a proven track record in COP9 and voluntary disclosures. IBISS & CO offers elite defence led by professionals who understand HMRC’s internal manuals. Learn how to identify different types of investigation letters here.
What should I do immediately after receiving an HMRC investigation letter?
Do not sign any declarations or provide documents until you have professional representation. Responding incorrectly to nudge letters can increase your financial risk. View our expert tips on handling HMRC correspondence.
Why choose IBISS & CO for tax investigation support?
We provide unique cross border expertise for UK and Dubai based clients, fixed fee transparency and a high success rate in reducing penalties. We specialise in resolving complex enquiries before they escalate.
Contact Us Online
Confused Where To Start?
Schedule a Free 15-minute discovery call by providing your contact details, mentioning your requirements, and selecting a convenient date for the call.
How our discovery call works:
- Complete Our Contact Form
- Discovery Calls Scheduled
- Receive a Tailored Proposal
We Help Our Clients
Sole Trader
HMRC Self employed registration
Self Assessment submission
Unlimited accountancy support
Dedicated client management
from £30 +VAT (Per Month)
Ltd Company
All your accountancy questions answered
Statutory Year End accounts
Corporation Tax filing
Phone and email support
from £70 +VAT (Per Month)
Tax Advice
Income Tax Planning
Overseas Workday relief
Effective Tax planning for property landlords
Capital Gain Tax Mitigation
from £150 +VAT (Per Hour)
Growing Business
Self Assessment
MTD VAT Submissions
Annual Accountancy Health check
Our speediest support & service
from £150 +VAT (Per Month)
IBISS Offices Location
Reviews
Google
Facebook
Vouchedfor
Trustpilot
Google
IQBAL ZAFAR
I have been IBISS & CO client for past 7 years. Their team is professional and proactive who assist me in filing my overseas and UK tax disclosure.
Ahmed Hussain
I’ve used them for the past few years now and I am very satisfied with their services. The staff are very amicable as well. Definitely recommend them.
Stephen Hudson
The response of IBISS and Co to my tax problem was rapid and professional. The advisor understood the problem and recommended
Andrea Callegari
Excellent service! Provided a clear explanation to my matter in a timely manner. Very helpful and polite. Highly recommend.
Facebook
John Mitchell
“IBISS & CO provided exceptional financial guidance. Their expertise and personalized approach helped streamline our investment strategy. Highly recommend for anyone seeking top-tier financial services.”
Sarah Thompson
Working with IBISS & CO was a game-changer for our business. Their insightful advice and thorough analysis led to significant financial growth. Outstanding service!
Michael Reynolds
IBISS & CO exceeded expectations with their professional and strategic approach. They understood our needs and delivered results beyond our expectations. A reliable partner in finance.”
Emily Carter
“IBISS & CO’s financial planning transformed our portfolio. Their team’s dedication and deep market knowledge ensured we made the best decisions. A trusted partner for financial success.”
Vouchedfor
Ashton Mills
IBISS & CO provided outstanding service, handling our project with precision and care. Their expertise made a significant difference, ensuring we achieved our goals efficiently.”
Lily Parker
Partnering with IBISS & CO was a game-changer. Their dedication to excellence and proactive approach led to exceptional outcomes. Highly recommend them for any business endeavor.”
James Turner
IBISS & CO exceeded expectations. Their professional team delivered top-notch results, staying committed to our needs throughout. A trusted partner in every sense.”
Sophia Grant
Working with IBISS & CO was a pleasure. Their focus on client satisfaction and detail-oriented service ensured our project’s success. They’re a reliable and highly skilled team.”
Trustpilot
Sarah J
BISS & CO exceeded our expectations with their professionalism and expertise. Our project was delivered on time and flawlessly executed.
Mike L
Outstanding service! BISS & CO’s attention to detail and client-focused approach made all the difference
Jessica M
Working with BISS & CO was a breeze. Their team is knowledgeable, responsive, and truly cares about client satisfaction.
David P
BISS & CO delivered exceptional results on our project. Highly recommend their services for anyone seeking quality and reliability.
BLOG
Explore the IBISS blog and case studies for helpful tips on tax accounting and business advice. If you need expert support just get in touch with us. The IBISS & CO expert team accountants & tax advisers is always here to help you and your business succeed.
What does an HMRC rental income letter mean? A HMRC nudge letter for undeclared rental income  means HMRC strongly suspects you have …
Leaving wealth to your extended family is a wonderful gesture. But inheritance tax for nieces and nephews requires careful planning. Under UK …