Corporation tax returns in Portsmouth — from £199, fixed.
Corporation tax done right for Portsmouth 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 Portsmouth and nearby Landport, Portsea, Guildhall.
Corporation Tax for Portsmouth — done properly, entirely online
Limited companies in Portsmouth 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
What Portsmouth gets with Bohzo Accountants
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 — Portsmouth 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
Traditional firms around South East still run on hourly billing, office appointments and fees you discover after the work. We work the other way round: one fixed fee agreed in writing before anything starts, every question included, and the whole engagement handled online — which is exactly why we can serve Portsmouth at fees a walk-in office can't match.
There's no office to fund in Portsmouth 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 Portsmouth: 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 Portsmouth.
You review everything first. Then it goes to HMRC electronically and you get confirmation immediately.
The same service in Portsmouth as anywhere — by design
Whether your business trades from Portsmouth itself or you simply live there and work everywhere, the tax rules are national — and so are we. Portsmouth clients get the same preparers, the same fixed fees and the same deadline tracking as every other town on this site.
A lot of our South East clients switched from local firms after one too many surprise invoices. The fix wasn't a cheaper local firm; it was removing the billing model that produces surprises. Fixed fees, in writing, before the work — that's the whole trick.
Where we work around Portsmouth
Portsmouth is part of South East, in the PO1 postcode area, with Landport its nearest neighbour — about 0.4 miles to the north. Geography still shapes who people call, so here's Portsmouth's: the same fixed-fee service covers every place on this list, at the same price.
| Nearby | Distance from Portsmouth | Direction |
|---|---|---|
| Landport | 0.4 miles | north |
| Portsea | 0.5 miles | west |
| Guildhall | 0.5 miles | south-east |
| Fratton | 0.7 miles | east |
| Mile End | 0.7 miles | north |
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 |
Portsmouth 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 Portsmouth?
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 Portsmouth or anywhere else in South East.
I searched "corporation tax near me" — is this service really local to Portsmouth?
Portsmouth 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 Portsmouth town centre or the edge of South East. 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 Portsmouth
A limited company juggles two regulators: Companies House wants accounts within nine months of year end, HMRC wants corporation tax paid at nine months and a day. Same starting point, different documents — and late filing penalties at Companies House escalate automatically and are rarely cancelled.
If a return is late because HMRC asked for one you don't actually need, it can sometimes be withdrawn entirely — penalties included. And where there's a genuine reasonable excuse, appeals succeed more often than people expect. The wrong move is ignoring the letters.
Good records aren't about neatness — they're about money: claims you can evidence, VAT you can reclaim, and an accountant who spends billable time on advice rather than sorting. Bank feeds plus a receipts app gets most small businesses to "tidy" in minutes a week.
Filing early doesn't mean paying early: submit a return in May and the tax is still not due until the usual dates. Early filing buys certainty, refund speed and time to arrange payment — it costs nothing.
Selling a rental property triggers capital gains tax with a tight reporting window — UK residential sales must be reported and the tax paid within 60 days of completion. It's one of the easiest deadlines in the whole system to miss, and one of the most penalised.
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.
Incorporation isn't a milestone, it's a calculation: corporation tax versus income tax and NICs, dividend taxation, what you need to draw versus what can stay in the company, and whether limited liability matters for your work. For some Portsmouth businesses it saves thousands; for others it's pure extra paperwork.
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.
General guidance, not personal advice — thresholds and dates change. For advice on your own position in Portsmouth, message us and we'll answer against your actual numbers.
Corporation Tax near Portsmouth
Recent client feedback
Verified client reviews will appear here as engagements complete. We only ever publish genuine, verifiable feedback — no purchased or invented reviews, anywhere on this site.