Corporation tax returns in Underhill — from £199, fixed.
Corporation tax done right for Underhill companies: computation, reliefs, iXBRL and filing — one fixed fee. We make sure you claim everything you're entitled to and pay exactly what's due, no more. Serving Underhill and nearby Ducks Island, Dollis Valley, Arkley.
Corporation Tax for Underhill — done properly, entirely online
Limited companies in Underhill 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 choose Bohzo Accountants in Underhill?
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 — Underhill 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
A high-street accountant in North London typically bills by the hour, meets by appointment and prices each extra question. 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 Underhill pays the same as everywhere else.
There's no office to fund in Underhill 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 Underhill: 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 Underhill.
You review everything first. Then it goes to HMRC electronically and you get confirmation immediately.
The same service in Underhill as anywhere — by design
Whether your business trades from Underhill itself or you simply live there and work everywhere, the tax rules are national — and so are we. Underhill clients get the same preparers, the same fixed fees and the same deadline tracking as every other town on this site.
London clients in Underhill 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 Underhill
Underhill sits in the borough of Barnet (Underhill ward), EN5 postcode area. Geography still shapes who people call, so here's Underhill's: the same fixed-fee service covers every place on this list, at the same price.
| Nearby | Distance from Underhill | Direction |
|---|---|---|
| Ducks Island | 0.2 miles | east |
| Dollis Valley | 0.7 miles | east |
| Arkley | 0.8 miles | west |
| Barnet | 1.0 miles | north-east |
| High Barnet | 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.
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 |
Underhill 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 Underhill?
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 Underhill or anywhere else in North London.
I searched "corporation tax near me" — is this service really local to Underhill?
Underhill 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 Underhill town centre or the edge of North 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.
Things worth knowing before your next filing
Online Self Assessment returns are due by 31 January, along with any balancing payment — and HMRC's £100 penalty applies the moment the deadline passes, even if you owe nothing. Most Underhill clients who come to us in January still file on time; the records just need to arrive before the last week.
Company deadlines run off your accounting year end, not the tax year: corporation tax is payable nine months and one day after year end, and the CT600 return is due twelve months after. Confusingly, the payment is due before the return — a sequencing quirk that catches new directors.
Status under IR35 turns on the reality of the engagement: control, substitution, mutuality of obligation. Contracts matter, but working practices matter more. A written status assessment for each engagement is cheap insurance.
The best time to switch is after a filing, but it works at any point in the year. What matters is not letting a looming deadline stop you: a new firm can usually pick up an in-flight year faster than you'd think.
The first hire brings PAYE registration, Real Time Information submissions every payday, workplace pension auto-enrolment and payslips that must be right. It's all completely manageable — as a monthly routine run by software, not a monthly crisis.
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.
The trading allowance means up to £1,000 of gross side income per year can be tax-free with no return needed. Above that, registration and reporting kick in — and platforms now report seller data to HMRC, so "under the radar" isn't a strategy any more.
The first tax bill is the hardest because it can arrive with payments on account attached — up to 150% of the year's tax in one go. New businesses that save a quarter to a third of profits from day one never feel it.
General guidance, not personal advice — thresholds and dates change. For advice on your own position in Underhill, message us and we'll answer against your actual numbers.
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