Additions Plus

HMRC Tax Investigation Help

Receive confidential HMRC tax investigation help from experienced tax professionals who will guide you through every stage of the enquiry.

Who we Help?

Limited Companies

Sole Traders/Self Employed

Contractors & Subcontractors

Landlords & Property Owners

HMRC Compliant Services

Professional Support When You Need It Most

If you have received a letter from HMRC, acting quickly can make a significant difference. Our experienced team provides professional HMRC tax investigation help for individuals and businesses, helping you understand the enquiry, prepare the required information, and communicate with HMRC confidently.

As a registered and experienced accountancy firm, we offer practical advice and full representation throughout the investigation process. Whether your enquiry relates to self-assessment, VAT, corporation tax, or payroll, we work to protect your interests while helping you achieve the best possible outcome at highly affordable rates.

How We Make Working with Us Simple

Our Simple Process

From your first consultation to ongoing support, we make managing your finances straightforward with a clear, hassle-free process.

Free Consultation

We discuss your needs, answer your questions and identify the right support for your business.

Tailored Plan

We create a clear service plan based on your goals, priorities, requirements and budget.

Expert Support

Our team handles the work accurately, keeps you updated and provides guidance throughout.

Ongoing Partnership

We continue our support with practical advice, reliable service and regular communication.

Supporting Individuals & Businesses

Complete HMRC Investigation Services

HMRC investigations can vary in scope, from simple compliance checks to detailed reviews of financial records. We assist with full tax investigations, aspect enquiries, self-assessment reviews, VAT investigations, corporation tax enquiries, PAYE checks, and CIS compliance matters. Every case is handled with care, accuracy, and complete confidentiality.

Our services are available for individuals, sole traders, landlords, contractors, partnerships, limited companies, company directors, and SMEs across the UK. We review your records, prepare supporting documents, respond to HMRC correspondence, negotiate where appropriate, and provide ongoing tax compliance advice to reduce future risks.

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Exceptional accounting support at your fingertips

WHAT OUR CLIENTS SAY

Trusted By Businesses & Individuals

Real feedback from real clients on Google.

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Ramdhan Apriana profile picture
Ramdhan Apriana
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Nice to try it, very recommended.
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Claire Rose profile picture
Claire Rose
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Reliable, friendly accountants; sorted my tax return efficiently, brilliantly.
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Flory Gomez profile picture
Flory Gomez
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I highly recommend, the support and advice are upmost valuable . They are always accessible, always reliable , on your best interest . They are absolutely fantastic!
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Simon Stokes profile picture
Simon Stokes
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I have been using Additions Plus now for a year and I cannot rate them highly enough for their attention to detail and ability to make my life easier when dealing with my accounts. Raj and the team have been nothing but a delight to deal with. I thank them all for their advice and help along the way. No questions or tasks are too much, they work quickly and efficiently with everything they do. I can’t ask for anything more in help with my accounts.
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ramesh parmar
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Additions Plus Where the winning formula equates to the correct answer, All this collated from the a pile of invoices and receipts, resulting with them dealing with the appropriate company(s) with the frightening acromion like H.M.R.C & V.A.T. Leaving me stress free with the acromion that I understand at the end of the week, B.A.R & V.A.T.
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Sunny profile picture
Sunny
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Been using them for many years and would not hesitate to recommend highly.
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Terry Grant profile picture
Terry Grant
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I have been using Raj and her team for my business and personal accounts for over 20 years and have always found their service to be exceptional. Never missed a deadline, always available to discuss anything, no hidden extra charges, friendly and helpful service, reasonable charges. I really cant fault them....which is why I never even consider going elsewhere :-)
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Sukhbir Sidhu
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Always a prompt and highly professional service. I would recommend this firm without hesitation.
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GIANNIS MASTRANTONAKIS
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Work with additional plus Is a pleasure These are correct people for the work My company have change 3 accounts in the past Bit now we are not going to change again We high recommend additional plus

Our Investigation Process

Clear Guidance at Every Stage

We follow a structured process to help you respond to an HMRC investigation with confidence.

Confidential Consultation

We review your HMRC letter, discuss your situation, and explain the next steps.

Case Assessment

Our specialists examine your tax returns and financial records to prepare a suitable response.

HMRC Representation

We communicate directly with HMRC, submit documentation, and manage the enquiry on your behalf.

Resolution & Future Compliance

After resolving the investigation, we provide guidance to improve future tax compliance and reduce the risk of further enquiries.

Simplify Your Finances

Our Comprehensive Accounting Solutions

Our online accountancy services take your stress away and help your business thrive.

Bookkeeping & VAT Returns

Track daily transactions and ensure accuracy in VAT records

Year-End Accounts & Corporation Tax

Meet strict filing deadlines and handle all HMRC correspondence

Payroll Management

Handle wages and process deductions with precision

Company Formation & Secretarial Services

Register business with HMRC and manage ongoing legal compliance

Self-Assessment & Personal Tax Returns

Organise your financial records and reduce overall tax bill

Quarterly Tax Returns – Making Tax Digital (MTD)

Analyse and interpret your business’s financial data

Partnership, Property Accounts & Returns

Simplify complex partnership and property finances

Tax Claims & Refunds (CIS)

Prepare and submit accurate self-assessment tax returns

Tax Advisory Services & HMRC Investigations

Optimise tax efficiency and negotiate settlements

Experienced, Confidential & Reliable

Why Choose Our Tax Investigation Specialists

Our certified and licenced tax advisors have extensive experience handling HMRC enquiries for both individuals and businesses. We provide honest advice, transparent communication, and tailored solutions based on the complexity of each case. From the initial consultation to the final resolution, you receive dedicated support from professionals who understand HMRC procedures.

The cost of HMRC tax investigation help depends on factors such as the type of tax involved, the amount of documentation to review, the complexity of the enquiry, and whether negotiations or appeals are required. We explain all fees clearly and provide practical solutions that deliver value while maintaining complete confidentiality.

Get in Touch with Our Experts

Speak with our experienced tax investigation specialists today for confidential advice and professional support.

FAQS

Frequently Asked Questions

What is an HMRC tax investigation?

An HMRC tax investigation is a review of your tax affairs to check that your returns and financial records are accurate and compliant.

HMRC may contact you because of a routine compliance check, unusual information on a tax return, missing records, or information received from other sources.

Yes. We can communicate directly with HMRC, prepare responses, organise supporting documents, and represent your interests throughout the enquiry.

Costs vary depending on the complexity of the case, the type of investigation, and the amount of professional support required. We provide transparent pricing before work begins.

Do not ignore it. Contact a qualified tax advisor as soon as possible so the enquiry can be reviewed and handled correctly from the start.

Yes. We provide HMRC investigation support for individuals, sole traders, landlords, contractors, partnerships, limited companies, and SMEs across the UK.