Corporation tax returns in South Mimms — from £199, fixed.
Corporation tax done right for South Mimms 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 South Mimms and nearby Mimms, South, Ridge, Bridgefoot.
Corporation Tax for South Mimms — done properly, entirely online
Limited companies in South Mimms 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 South Mimms gets with Bohzo Accountants
We track every HMRC and Companies House date that applies to you, so you don't have to.
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 — South Mimms 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.
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 M25 Fringe still run on hourly billing, office appointments and fees you discover after the work. 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 South Mimms.
There's no office to fund in South Mimms 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 South Mimms: 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 South Mimms.
You review everything first. Then it goes to HMRC electronically and you get confirmation immediately.
The same service in South Mimms as anywhere — by design
We built this service so that someone in South Mimms never pays a premium — or accepts worse service — because of geography. Same specialists, same published fees, same speed, wherever in M25 Fringe you are.
A lot of our M25 Fringe 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 South Mimms
South Mimms is part of M25 Fringe, in the EN6 postcode area, with Mimms, South its nearest neighbour — about 0.2 miles to the south-west. Wherever you are around South Mimms, the numbers below are why "near me" matters less than it used to — every place in the list gets the same service, the same day.
| Nearby | Distance from South Mimms | Direction |
|---|---|---|
| Mimms, South | 0.2 miles | south-west |
| Ridge | 0.7 miles | south-west |
| Bridgefoot | 0.7 miles | east |
| Rabley | 0.9 miles | west |
| Dugdale Hill | 1.1 miles | 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 |
South Mimms 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 South Mimms?
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 South Mimms or anywhere else in M25 Fringe.
I searched "corporation tax near me" — is this service really local to South Mimms?
South Mimms 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 South Mimms town centre or the edge of M25 Fringe. 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 South Mimms
Limited companies in CIS reclaim differently to sole traders — through payroll or the company tax return rather than Self Assessment. Plenty of construction companies sit on refundable deductions without realising; a quick review of the CIS position often pays for itself immediately.
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.
Compliance checks are usually specific: one return, one figure, one question. Answered promptly and with evidence, most close quickly. The expensive enquiries are the ones that started as unanswered letters.
If you're a sole trader or landlord anywhere near the £50,000 income mark, Making Tax Digital will change your filing rhythm from 2026: four digital updates a year plus a final declaration. Clients who move their records to software early find the transition a non-event.
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.
Auto-enrolment applies from the first eligible employee: assess, enrol, contribute, declare. The Pensions Regulator does check, and the fines for ignoring it are out of proportion to how simple compliance actually is.
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 South Mimms, message us and we'll answer against your actual numbers.
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