HMRC Investigation Support · North West London
HMRC investigation support in South Harefield
If HMRC has opened a compliance check, an enquiry or a Code of Practice 9 investigation into your affairs in South Harefield, you need someone who has handled them before and will tell you the truth about your position. We do both for clients across North West London, from first response to closure, at fixed fees per stage.
from £299 · fixed, per stage
Next deadlines
- VAT return and payment for the quarter that ended last month
- VAT return and payment for the quarter that ended last month
- Company tax return (CT600) due 12 months after your year end (a 31 December year end files by 31 December)
- VAT return and payment for the quarter that ended last month
Who this is for
HMRC Investigation Support for South Harefield
Anyone in South Harefield who has received an HMRC letter: sole traders and landlords with a Self Assessment compliance check, companies with a Corporation Tax or VAT enquiry, employers facing a PAYE review, people who have received a nudge letter about offshore income, crypto or property, and those who know their past returns were wrong and want to disclose before HMRC finds out.
What is included
Everything inside the fixed fee
- Review of HMRC's letter and the return or period under check, with a frank assessment of exposure before you commit
- Agent authorisation so that HMRC deals with us directly and deadlines are managed on your behalf
- A controlled first response: what HMRC is entitled to, what it is not, and the information actually required
- Meetings and correspondence handled, with you briefed before and after every exchange
- Voluntary disclosures prepared and negotiated where tax has been underpaid, minimising penalties
- Penalty mitigation, suspension requests, statutory reviews and tribunal appeals where the facts support them
How it works
HMRC Investigation Support from South Harefield, step by step
Tell us your situation
A short message or call about what you do and what needs filing. We ask the questions that determine the right package and nothing more.
Fixed fee in writing
You receive one price for the work, confirmed by email before anything starts. It does not change if the job takes longer than we expected.
Send records, review the draft
Records come by WhatsApp or email. We prepare the draft, explain the figures in plain English and answer your questions.
We file, you get the receipts
Once you approve and the fee is settled, we submit electronically and forward the HMRC or Companies House acknowledgement the same day.
Why IGI
What you get in South Harefield
The price for hmrc investigation support is published on this page and is what a client in South Harefield pays. We confirm it in writing first, and the invoice matches the quote.
Deadline-first: the dates that matter for hmrc investigation support are shown at the top of this page, diarised for every South Harefield client and chased before they arrive.
Online only, UK based. There is no office in South Harefield to pay for, which is why the fee is the same here as anywhere in England; the work is done by people in the UK who answer the same day.
Continuity matters in hmrc investigation support: the person who prepared last year's work for your South Harefield business prepares this year's, and remembers what was agreed.
Plain English, with the numbers. Every draft for South Harefield comes with a short explanation of what the figures mean and what, if anything, you should do about them.
You stay in control of hmrc investigation support: drafts go to South Harefield clients first, with the figures explained, and nothing leaves us until you say so.
Local facts
About South Harefield
South Harefield is in North West London, within Hillingdon, in the UB9 postcode district, England. Income tax in England follows the UK rates: 20% basic to £50,270, 40% higher to £125,140 and 45% additional, with the personal allowance of £12,570 tapered away above £100,000. National Insurance, VAT and Corporation Tax are UK-wide, and Stamp Duty Land Tax applies to property purchases.
| Place | Distance | Direction |
|---|---|---|
| Harefield, Hillingdon | 1.0 mi | N |
| Newyears Green | 1 mi | SE |
| Denham Green, South East | 1 mi | W |
| Hill End, Hillingdon | 2 mi | N |
| Denham, West London | 2 mi | SW |
| Denham, Higher | 2 mi | SW |
| Higher Denham | 2 mi | SW |
| West Ruislip | 2 mi | E |
Worth knowing
Rules that come up in this work
Employer National Insurance
Since April 2025 employer National Insurance has been 15% on earnings above a £5,000 secondary threshold, a substantial increase for small employers. The Employment Allowance rose to £10,500 at the same time to soften it for the smallest businesses. Directors deciding their own salary weigh this cost against the Corporation Tax deduction a salary provides.
Workplace pensions and auto-enrolment
Auto-enrolment duties begin the day you take on your first employee, not when the Pensions Regulator writes to you. Eligible staff must be enrolled, contributions paid every pay period and re-enrolment carried out every three years. Director-only companies without employment contracts are usually exempt. Fines for non-compliance are fixed and escalating.
Dormant companies
A dormant company is one with no significant accounting transactions in the year, where the only permitted entries are the payment for shares on incorporation, Companies House fees and penalties. It still files a confirmation statement and simplified dormant accounts every year. A bank charge or an accountant's fee paid from the company ends dormancy and requires full accounts.
The trading and property allowances
Not every small income needs a tax return. The trading allowance exempts the first £1,000 of self-employment or casual income and the property allowance does the same for rental income, each measured on gross receipts. They cannot be combined with rent-a-room relief on the same income, and claiming the allowance means giving up the expense deduction for that source.
Crypto records and reporting
Most crypto holders have taxable events they do not recognise, because every swap is a disposal even when no pounds change hands. The computation requires the complete transaction history from every exchange and wallet, pooled by asset with HMRC's matching rules applied. Exchange-generated tax reports are frequently wrong because they cannot see transfers between a user's own wallets.
The 60-day property CGT return
Selling UK residential property that was not your main home for the whole period of ownership triggers a separate Capital Gains Tax return, due within 60 days of completion along with payment of the tax. This is in addition to the annual Self Assessment. The gain is taxed at 18% or 24% depending on your income band, after the £3,000 annual exempt amount.
Record keeping
Record keeping is a legal obligation with a penalty of up to £3,000 for failure, but its real value is in making every other filing cheaper and more defensible. Keep invoices, receipts, bank statements, mileage logs and any HMRC correspondence, digitally if you like, for five years after the relevant filing deadline for individuals and six years for companies and VAT.
Questions
HMRC Investigation Support questions from South Harefield
I received a nudge letter but I think my return is right. What should I do?
Nudge letters ask you to check and either amend or confirm. Do not sign HMRC's certificate without checking thoroughly, because signing a false one is serious. We review the area HMRC has raised, confirm the position and respond. If the return is right we say so to HMRC clearly; if not, we amend before any enquiry is opened.
Should I just send HMRC everything they ask for?
No. HMRC is entitled to information reasonably required to check the return, and no more. Requests for private bank statements, several years of records or information about other people are often wider than the law allows. Giving too much lengthens the enquiry and can open new lines. We give HMRC what it is entitled to, promptly and completely.
How long does an enquiry take?
A straightforward aspect enquiry into one item can close in two to three months. A full enquiry into a year's records typically takes six to twelve months, longer if HMRC extends to other years. We keep the process moving by responding within deadlines and pressing HMRC to do the same, and we apply for a closure notice if HMRC stalls.
What is the difference between a compliance check and an investigation?
A compliance check is HMRC's standard term for any review of a return, from a single question to a full examination of a year's records. Most are routine. A Code of Practice 9 investigation is reserved for suspected serious fraud and works very differently, offering immunity from prosecution in return for full disclosure. We tell you which you are facing from the letter.
What does the £299 first stage cover?
Reviewing HMRC's letter and the return or period concerned, assessing what HMRC is likely to be looking at and your exposure, arranging agent authorisation, and preparing and sending the first response within HMRC's deadline. At the end you know where you stand and what the next stage would cost, and you decide whether to proceed.
Can HMRC go back more than one year?
The normal time limit is four years from the end of the tax year, extended to six for careless behaviour and twenty for deliberate behaviour or failure to notify. If HMRC finds an error in one year it will usually ask about others. Part of our job is holding HMRC to the correct time limit for the behaviour actually shown.
Do you have an office in South Harefield?
No. IGI Accounting is an online-only firm. We serve South Harefield and every other UK postcode remotely, with records sent by WhatsApp or email and everything filed electronically. The absence of local premises is why the fee for hmrc investigation support is the same in South Harefield as anywhere else in the country, and why there is nothing to visit and nothing to print.
Is hmrc investigation support in South Harefield really the same price as elsewhere?
Yes. The fee published on this page is what a client in South Harefield pays and what a client in any other part of England pays. It is confirmed in writing before work starts and the invoice matches the quote. Where a higher package applies because your situation is more complex, we say so at the quote stage, never afterwards.
One message from South Harefield, one fixed price
Tell us what you need. You get one fixed fee in writing, and nothing is filed until you approve it.