Corporation tax returns in Mayfair — from £199, fixed.
Your CT600 prepared and filed by online accountants who check every relief first — capital allowances, losses, marginal relief. Fixed fee, agreed up front, for companies across Mayfair and Central London including West End of London, Oxford Circus, St James's.
Corporation Tax for Mayfair — done properly, entirely online
Limited companies in Mayfair of every size — especially companies whose profits sit between £50,000 and £250,000, where marginal relief makes the calculation genuinely easy to get wrong.
What's included
- Corporation tax computation from your accounts
- Every relief you're entitled to — capital allowances, losses, AIA
- CT600 filed with HMRC with iXBRL-tagged accounts
- Clear payment instructions — how much, when, and to where
- Marginal relief calculated correctly between the 19% and 25% bands
Why Mayfair businesses pick Bohzo
Your fee is agreed before any work starts and never changes mid-job. No hourly billing, ever.
Records in over the portal or WhatsApp, approvals from your phone, filings sent electronically — Mayfair to HMRC without a single appointment.
Bohzo Accountants trades as Bohzo Ltd, registered in the UK under Company No. 15031604 — check us on Companies House any time.
We track every HMRC and Companies House date that applies to you, so you don't have to.
Compare our fixed corporation tax fees
| Your situation | Fixed fee |
|---|---|
| CT600 with accounts prepared by us | included in accounts packages |
| Standalone CT600 from your accounts | £199 |
| CT600 with capital allowances review | £299 |
| Overdue CT600 rescue | £279 |
“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 Mayfair quote low, bill by the hour and reserve the right to charge for every phone call. Our model inverts that: the fee is fixed and written down before work begins, questions are part of the service rather than billable events, and everything happens online — the reason Mayfair pays the same as everywhere else.
There's no office to fund in Mayfair 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.
Corporation Tax in Mayfair: from first message to filed
A WhatsApp message from Mayfair is enough to start: what you need, what shape your records are in, any deadline you're worried about.
The quote arrives in writing, covers everything discussed, and is the number you'll actually pay. No revisions later.
Identity checks, engagement letter, secure record upload — all handled from wherever you are in Mayfair. We chase whatever's missing.
Nothing is filed until you've seen and approved it. Once you have, submission is electronic and confirmation comes straight back.
The same service in Mayfair as anywhere — by design
We built this service so that someone in Mayfair never pays a premium — or accepts worse service — because of geography. Same specialists, same published fees, same speed, wherever in Central London you are.
London clients in Mayfair tend to arrive with more moving parts — employment plus side income, shares, property. That's fine: the fixed quote covers your actual situation, agreed before we start, however many supplementary pages it needs.
Where we work around Mayfair
Mayfair sits in the borough of Westminster (West End ward), W1K postcode area. Geography still shapes who people call, so here's Mayfair's: the same fixed-fee service covers every place on this list, at the same price.
| Nearby | Distance from Mayfair | Direction |
|---|---|---|
| West End of London | 0.4 miles | north-west |
| Oxford Circus | 0.4 miles | north-east |
| St James's | 0.5 miles | south-east |
| Piccadilly | 0.5 miles | east |
| Marble Arch | 0.5 miles | west |
Distances are straight-line, between place centres. Every listed place — and everywhere between — is served online at the same fixed fees.
Corporation Tax deadlines
| Date | What happens |
|---|---|
| 9 months + 1 day after year end | Corporation tax payment due — before the return itself |
| 12 months after year end | CT600 return filing deadline |
Mayfair corporation tax FAQs
What rate of corporation tax will my company pay?
19% on profits up to £50,000, 25% above £250,000, and marginal relief in between — an effective rate that climbs gradually. Associated companies split those thresholds, which catches many owners with more than one company. We calculate it precisely.
The payment is due before the return — is that right?
Yes, oddly: payment is due 9 months and 1 day after year end, but the return itself isn't due until 12 months. We prepare everything well before the payment date so you know the bill with time to plan.
Can you review whether I've missed reliefs in past years?
Yes — you can generally amend a CT600 up to 12 months after its filing deadline, and some claims reach back further. If you think allowances went unclaimed, we'll review and quote a fixed fee for any amendment worth making.
Do I need to visit an office in Mayfair?
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 Mayfair or anywhere else in Central London.
I searched "corporation tax near me" — is this service really local to Mayfair?
Mayfair 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 Mayfair town centre or the edge of Central London. If you'd rather talk it through first, WhatsApp us — a real person answers.
Who will actually handle my corporation tax?
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, briefly — the parts that affect Mayfair
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.
People stay with the wrong accountant for years because switching feels disruptive. In practice the profession has a standard handover process — clearance letters, copies of prior returns and working papers — and the new firm drives it, not you.
HMRC requires records to be kept for at least five years after the filing deadline for the self-employed. Digital copies count. A cloud folder or app now beats a carrier bag of paper every time — for you and for any future enquiry.
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.
Miss 31 January and the £100 fine is automatic; three months later daily penalties start. If you're behind on a return, the maths almost always favours filing quickly over waiting — penalties grow on a timetable, and HMRC charges interest either way.
Most self-employed people under-claim. Use of home, mileage at HMRC's approved rates, phone and broadband apportionment, trade subscriptions, training that updates existing skills — legitimate deductions left on the table add up to real tax overpaid year after year.
Plenty of people incorporate too early because it "sounds established", then pay for accounts, confirmation statements and payroll they didn't need. The switch pays for itself at the right profit level — the trick is knowing yours.
Ask any prospective accountant two questions: "what's included in the fee?" and "what costs extra?" The quality of those two answers predicts the whole relationship.
General guidance, not personal advice — thresholds and dates change. For advice on your own position in Mayfair, message us and we'll answer against your actual numbers.
Corporation Tax near Mayfair
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