R&D Tax Credits · Central London
R&D tax credit claims in Cannon Street
Since the merged R&D scheme and HMRC's compliance campaign, speculative claims are expensive mistakes. Companies in Cannon Street use us because we say no when the project does not meet the definition, and when it does we prepare a claim that is written to survive an enquiry. Fixed fees, no percentage of the benefit, online across Central London.
from £999 · fixed, per claim
Next deadlines
- R&D claim deadline: 2 years after the end of the accounting period (and the pre-notification window of 6 months after the period for first-time claimants)
- Company tax return (CT600) due 12 months after your year end (a 31 December year end files by 31 December)
- Corporation Tax payment, 9 months and 1 day after your year end (a 31 December year end pays by 1 October)
- R&D claim deadline: 2 years after the end of the accounting period (and the pre-notification window of 6 months after the period for first-time claimants)
Who this is for
R&D Tax Credits for Cannon Street
Limited companies in Cannon Street that have tried to achieve an advance in science or technology and faced genuine uncertainty doing it: software firms building something that did not exist, manufacturers developing new processes or materials, engineering businesses solving problems off the standard path, and food, biotech and clean-tech companies with development spend to recover.
What is included
Everything inside the fixed fee
- Eligibility review against the statutory definition of R&D for tax purposes, with a written yes or no
- Advance notification to HMRC within six months of the period end for first-time and lapsed claimants
- Technical narrative for each project: the scientific or technological uncertainty, the advance sought and how it was resolved
- Qualifying expenditure computed: staff costs, subcontractors, externally provided workers, software, consumables and data
- The Additional Information Form completed and submitted before the CT600 is filed
- Claim entered on the CT600 and the relief or payable credit tracked through to HMRC's payment
How it works
R&D Tax Credits from Cannon Street, step by step
Scope the job
We find out what you need filed, when it is due and what state the records are in, and tell you which fixed-fee package applies.
Agree the price
The fee is confirmed in writing. There is no hourly billing and nothing added for questions during the work.
Hand over the records
Photographs, PDFs, software access or a spreadsheet, sent however suits you. We confirm what we have and what is missing within two working days.
Approve, then we submit
You review the draft with our explanation, sign off, and we file. Receipts, copies and the next deadlines come back to you immediately.
Why IGI
The IGI way of working, in Cannon Street
One fixed fee for r&d tax credits in Cannon Street, agreed in writing before any work starts and never changed part-way through the job, however long it takes us.
We work to the HMRC and Companies House calendar, not an appointment diary. Clients in Cannon Street get reminders at 60, 30 and 7 days before each date that applies to r&d tax credits.
We serve Cannon Street remotely by design: records by WhatsApp or email, drafts back for approval, filing electronic. The saving on premises is passed to you in the fee for r&d tax credits.
Continuity matters in r&d tax credits: the person who prepared last year's work for your Cannon Street business prepares this year's, and remembers what was agreed.
The output for Cannon Street clients is never just a form. It is the form, a one-page summary of what it says, and a note of the decisions it points to for r&d tax credits.
Nothing is filed for Cannon Street until you have reviewed and approved it. You see the draft, you ask questions, you sign off, then we submit and send you the receipt.
Local facts
About Cannon Street
Cannon Street is in Central London, within City of London, in the EC4N postcode district, England. For businesses in England the tax rules are those set by the UK Parliament: the 20/40/45% income tax bands, Class 4 National Insurance for the self-employed at 6% and 2%, Corporation Tax at 19% to 25%, and Stamp Duty Land Tax on property. Business rates are set locally by the council.
| Place | Distance | Direction |
|---|---|---|
| Walbrook | 0.0 mi | SW |
| Dowgate | 0.1 mi | S |
| Bank, City of London | 0.1 mi | N |
| Vintry | 0.1 mi | W |
| Cordwainer | 0.1 mi | NW |
| Candlewick | 0.1 mi | E |
| Monument | 0.2 mi | E |
| Cheapside, City of London | 0.2 mi | NW |
Worth knowing
Rules that come up in this work
CIS deductions
CIS turns construction subcontractors into advance taxpayers: a fifth of every labour payment goes to HMRC before they see it. Registering keeps the rate at 20% rather than 30%; gross payment status, for established businesses with a clean record, removes deductions altogether. The annual return is where the overpayment comes back, and filing it early brings the refund sooner.
Confirmation statements and identity verification
The confirmation statement is the annual check that the public register is right: officers, registered office, SIC codes, shareholders and the PSC register. It carries a £50 fee and no financial penalty for lateness, but failure to file leads to compulsory strike-off. The identity verification regime introduced in November 2025 has added a further check to every statement.
Payments on account
Payments on account catch out most people in their second year of self-employment. HMRC assumes next year's tax will match this year's and collects half in January and half in July, in advance, on top of the balancing payment. If profits are dropping you can apply to reduce them, but reducing them too far attracts interest. We calculate the right figure rather than guessing.
The Self Assessment calendar
The tax year runs from 6 April to 5 April. Anyone new to Self Assessment must register by 5 October after the end of the tax year in which their untaxed income began. The online return and the balancing payment are due by 31 January, with a second payment on account on 31 July where they apply. Paper returns have an earlier deadline of 31 October and are rarely sensible.
Making Tax Digital for Income Tax
The biggest change to Self Assessment in a generation is Making Tax Digital for Income Tax, now live for higher-earning sole traders and landlords and arriving for the rest in stages. Quarterly updates are due by 7 August, 7 November, 7 February and 7 May, built from digital records. The practical consequence is that spreadsheet-and-shoebox bookkeeping is ending for anyone above the threshold.
Late filing penalties
Lateness is expensive in a way that compounds. For individuals, £100 immediately, then daily penalties, then percentage-based ones at six and twelve months, with interest running on unpaid tax throughout. For companies, Companies House penalties scale with delay and double on repeat, and HMRC adds its own for a late CT600. Filing on time is the cheapest tax planning there is.
Corporation Tax rates and marginal relief
Companies pay Corporation Tax at 19% on profits up to £50,000 and 25% on profits over £250,000. Between those figures marginal relief applies, producing an effective rate that rises gradually and a marginal rate of 26.5% on each pound in the band. The thresholds are divided by the number of associated companies, so a director with two companies has thresholds of £25,000 and £125,000 for each.
Questions
R&D Tax Credits questions from Cannon Street
How far back can I claim?
A claim can be made up to two years after the end of the accounting period, by amending the CT600. If you have two open periods both can be claimed. The notification rule applies to the later periods if you have not claimed recently, so the two-year window and the six-month window interact; we check both.
Does claiming R&D relief increase my chance of an enquiry?
HMRC now checks a far higher proportion of claims than before 2023, so any claim carries some risk of questions. A claim with a clear technical narrative, costs that reconcile to the accounts and payroll, and a named competent professional behind it is answered quickly. We write claims to that standard.
Can I claim for subcontracted work?
Under the merged scheme the company that decides to undertake the R&D and bears the risk generally claims, even if it subcontracts the work. Subcontractor costs are included at 65%. Overseas subcontractor and worker costs are largely excluded unless the conditions cannot be met in the UK. We apply the rules to your contracts.
What if HMRC opens an enquiry into an existing claim?
We review the claim, the narrative and the cost basis, tell you how robust it is, and quote a fixed fee for handling the enquiry before any work starts. Where a claim was overstated by a previous adviser, the best outcome is often an agreed reduction, and we say so rather than fight a losing position at your expense.
Why do you charge a fixed fee rather than a percentage?
Percentage fees reward inflating the claim, which is exactly what HMRC's campaign targets. A fixed fee means our only interest is a claim that is right. For most small company claims £999 is also considerably cheaper than the 15% to 30% of benefit that contingent advisers charge.
How long does a claim take to pay out?
HMRC aims to process 85% of claims within 40 days but the compliance campaign has lengthened this for many. Relief reducing a Corporation Tax bill takes effect when the return is processed; payable credits are paid to the company's bank account. We track the claim and chase HMRC if it stalls.
How do I get started from Cannon Street?
Message us on WhatsApp or email with a sentence about your business and what you need. We reply in working hours with any questions and a fixed fee for r&d tax credits. Once you confirm, we tell you exactly which records to send and the work begins. Most Cannon Street clients are set up within a day.
Which deadlines matter most for r&d tax credits?
The next four dates that apply to r&d tax credits are shown at the top of this page, calculated from today. For Cannon Street clients we diarise every one of them from the day you join and send reminders before each, so the work is done in good time rather than in the last week before a penalty.
Fixed fees, filed on time, for Cannon Street
Tell us what you need. You get one fixed fee in writing, and nothing is filed until you approve it.