R&D tax credit claims in Castelnau — from £999, fixed.
Real R&D deserves real relief: fixed-fee claims for Castelnau companies, starting with an honest assessment of whether you qualify at all. Everything online — also serving Barnes, Riverside, Mortlake and Barnes Common.
R&D Tax Credits for Castelnau — done properly, entirely online
Companies in Castelnau solving technical problems without an off-the-shelf answer — software teams, engineers, manufacturers, food and materials businesses. Not for anyone chasing a claim they don't genuinely have.
What's included
- Honest eligibility assessment first — we don't file weak claims
- Technical narrative written to HMRC's current expectations
- Qualifying expenditure identified and computed correctly
- Additional Information Form and CT600 amendment filed
- Support if HMRC opens an enquiry into the claim
Why Castelnau businesses pick Bohzo
Before we touch anything for a Castelnau client, the fee is in writing — and it stays put. Hourly billing doesn't exist here.
Every filing date that applies to you goes in our diary the day you join — and we chase the records, not the other way round.
Bohzo Accountants is a trading name of Bohzo Ltd, Company No. 15031604.
Upload, approve, filed. The whole engagement runs from your phone or laptop, on your schedule rather than office hours.
Compare our fixed r&d tax credits fees
| Your situation | Fixed fee |
|---|---|
| Eligibility review — do you have a claim? | £0 |
| Full claim: technical narrative + computation + filing | £999 |
| Larger claim (qualifying spend over £100k) | £1,999 |
| HMRC enquiry support on an existing claim | £POA — fixed quote after review |
“From” pricing reflects the simplest case; anything more complex is quoted as a fixed fee in writing before work begins — and never changes after.
Online accountants vs the high street
Most local firms near Castelnau quote low, bill by the hour and reserve the right to charge for every phone call. We built the opposite: written fixed fees agreed up front, unlimited questions inside the price, and a fully online workflow — no premises anywhere, so no premises priced into your fee in Castelnau.
There's no office to fund in Castelnau and no office to visit: records travel through our secure portal or WhatsApp, approvals happen on your phone, and filings go to HMRC and Companies House electronically. You get the same qualified work — minus the overheads, the travel and the surprises on the invoice.
R&D Tax Credits in Castelnau: from first message to filed
WhatsApp or the enquiry form — describe what you need and roughly what your records look like. Two minutes.
You get one written fixed price before anything begins — and if your case is unusual, we price that honestly up front.
Onboarding is a phone job: verify identity, sign the engagement letter, upload records. Nothing needs you to leave Castelnau.
You review everything first. Then it goes to HMRC electronically and you get confirmation immediately.
The same service in Castelnau as anywhere — by design
Castelnau sits in South West London (SW13), and like everywhere we serve, it gets the identical service and fee as central London — because nothing about our work depends on where you are. What matters is your situation, your records and your deadlines; all three travel over WhatsApp just fine.
Being in London, Castelnau clients often come to us comparing against firms charging central-London rates for the same compliance work. The work is identical; the overheads aren't — and since we carry no premises anywhere, our fees don't care about postcodes.
Where we work around Castelnau
Castelnau sits in the borough of Richmond upon Thames (Barnes ward), SW13 postcode area. If you're comparing local options from Castelnau, it helps to see the map the way we do — one service area, no travel involved.
| Nearby | Distance from Castelnau | Direction |
|---|---|---|
| Barnes | 0.6 miles | south-west |
| Riverside | 0.7 miles | east |
| Mortlake and Barnes Common | 0.8 miles | south-west |
| Chiswick Homefields | 0.8 miles | north-west |
| Fulham Reach | 1.0 miles | north-east |
Distances are straight-line, between place centres. Every listed place — and everywhere between — is served online at the same fixed fees.
Castelnau r&d tax credits FAQs
Does my work actually qualify as R&D?
The test is whether you sought an advance in science or technology by resolving uncertainty a competent professional couldn't readily solve. Routine development doesn't qualify; genuine technical problem-solving often does. Our free eligibility review gives you a straight answer before you spend anything.
How much is a claim worth?
Under the merged scheme, broadly a 20% expenditure credit on qualifying spend — staff costs, subcontractors, software, consumables. A company with £100,000 of qualifying spend sees a benefit in the region of £15,000–£16,000 after tax.
What if HMRC opens an enquiry?
Enquiry rates have risen sharply, which is why our narratives are written to answer HMRC's questions before they're asked. If an enquiry does open, we respond on your behalf — including for claims other advisers prepared.
Do I need to visit an office in Castelnau?
No — there's nothing to visit and nothing to print. We're an online firm: records go through our secure portal or WhatsApp, and everything is filed electronically. It works the same whether you're in Castelnau or anywhere else in South West London.
I searched "r&d claim near me" — is this service really local to Castelnau?
Castelnau is fully covered, yes. The work is done online, which in practice means more local than an office: same-day replies instead of appointment slots, and the same published fixed fee whether you're in Castelnau town centre or the edge of South West London. If you'd rather talk it through first, WhatsApp us — a real person answers.
Who will actually handle my r&d claim?
Bohzo Accountants — a trading name of Bohzo Ltd, a registered UK company (No. 15031604). You get a named contact, a fixed fee in writing, and nothing is filed until you've reviewed and approved it.
How do your fixed fees work?
You tell us your situation, we quote one fixed price in writing before any work starts, and that price never changes mid-job. If your case is unusually complex we'll say so up front and agree a different fixed price — but the fee is always agreed before we begin, never after.
Tax notes our Castelnau clients ask about most
The expenses rule is "wholly and exclusively" for the trade — which covers more than most people claim (proportionate home-working costs, business mileage, software subscriptions) and less than some hope (client entertaining, everyday clothing). Knowing the line is where the savings live.
The tax-free dividend allowance is down to £500, so almost any director taking dividends now pays some dividend tax — and needs a Self Assessment return to report it. The classic small-salary-plus-dividends strategy still works; it just needs actual planning rather than folklore.
The businesses that find January easy are the ones whose bookkeeping happened all year — automatically. Modern software matches bank transactions, files receipts photographed on a phone, and leaves nothing to reconstruct from memory in the new year.
Since Section 24, individual landlords can't deduct mortgage interest as an expense — it's a 20% tax credit instead, which pushes some higher-rate landlords into surprising bills. Whether to hold property personally or through a company is now a genuine question with genuine trade-offs.
Every tax bill is predictable months in advance — which makes tax the most plannable cost a business has. A separate tax savings account, fed a fixed percentage of every sale, converts January from a crisis into a transfer.
New companies often have a long first accounting period, which can mean two corporation tax returns for one set of accounts. It's normal, but it's exactly the kind of thing that's cheaper to get right first time than to unpick.
The honest answer changes with your profits. At lower profits, sole trader simplicity usually wins; as profits grow, a limited company's mix of salary and dividends, corporation tax rates and liability protection starts earning its extra admin. We run the actual numbers before recommending either.
If your last Self Assessment bill was over £1,000, HMRC usually asks for next year's tax in advance — half on 31 January, half on 31 July. It's the number-one cause of "why is my bill double?" calls, and it's manageable: if your income has dropped, the payments can be reduced with a claim.
General guidance, not personal advice — thresholds and dates change. For advice on your own position in Castelnau, message us and we'll answer against your actual numbers.
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