Self Assessment tax returns in Blackfen — from £129, fixed.
If HMRC expects a tax return from you, we take the whole job off your plate — prepared and filed online for Blackfen clients at one fixed fee, agreed in writing first. We work with sole traders, landlords and directors across Blackfen and neighbouring The Oval Sidcup, Blackfen and Lamorbey, Falconwood and Welling.
Self Assessment Tax Returns for Blackfen — done properly, entirely online
Sole traders, freelancers, landlords, company directors, higher earners and anyone in Blackfen who's been asked by HMRC to file a return — including first-time filers who've just gone self-employed.
What's included
- Full SA100 return prepared and filed with HMRC
- All supplementary pages your situation needs — self-employment, property, dividends, CGT
- Your tax liability checked and explained in plain English
- Payments on account calculated so there are no surprises
- Deadline reminders so you never miss 31 January
Why Blackfen businesses pick Bohzo
Quote first, work second: one written price that can't drift, however many questions you ask along the way.
Self Assessment, VAT quarters, accounts, confirmation statements — each deadline is tracked and chased by us, well before it's close.
We're Bohzo Ltd (Company No. 15031604) — a registered UK company you can look up, not an anonymous website.
Secure portal and WhatsApp — no office visits, no printing, no waiting rooms.
Compare our fixed self assessment tax returns fees
| Your situation | Fixed fee |
|---|---|
| Straightforward return — one income source | £129 |
| With rental property income | £169 |
| With capital gains (property, shares, crypto) | £199 |
| Late-return rescue — filed fast, penalties appealed where possible | £179 |
“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 Blackfen 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 Blackfen.
There's no office to fund in Blackfen 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.
Self Assessment Tax Returns in Blackfen: from first message to filed
A WhatsApp message from Blackfen 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 Blackfen. 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 Blackfen as anywhere — by design
Whether your business trades from Blackfen itself or you simply live there and work everywhere, the tax rules are national — and so are we. Blackfen clients get the same preparers, the same fixed fees and the same deadline tracking as every other town on this site.
Being in London, Blackfen 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 Blackfen
Blackfen sits in the borough of Bexley (Blackfen & Lamorbey ward), DA15 postcode area. If you're comparing local options from Blackfen, it helps to see the map the way we do — one service area, no travel involved.
| Nearby | Distance from Blackfen | Direction |
|---|---|---|
| The Oval Sidcup | 0.3 miles | south |
| Blackfen and Lamorbey | 0.6 miles | south-west |
| Falconwood and Welling | 0.6 miles | north-west |
| Blendon and Penhill | 0.7 miles | south-east |
| Blendon | 0.8 miles | east |
Distances are straight-line, between place centres. Every listed place — and everywhere between — is served online at the same fixed fees.
Self Assessment Tax Returns deadlines
| Date | What happens |
|---|---|
| 5 Oct 2026 | Deadline to register for Self Assessment if you're newly self-employed |
| 31 Oct 2026 | Paper return deadline (almost nobody should be filing on paper) |
| 31 Jan 2027 | Online filing deadline and balancing payment due — miss it and HMRC charges an automatic £100 penalty |
| 31 Jul 2027 | Second payment on account due, if you make them |
Blackfen self assessment tax returns FAQs
What does the £129 fee include?
Preparation and online filing of your full SA100 return, including the supplementary pages your situation needs. If your return is more complex — rental income, capital gains — the packages above show the fixed price, and we confirm it in writing before starting.
I've missed the deadline — can you still help?
Yes. Late returns are common and fixable: we prepare and file the outstanding return quickly, and where there's a reasonable excuse we help you appeal penalties. The sooner it's filed, the sooner the penalties stop growing.
What records do I need to send you?
Income records (invoices, statements, P60/P45 if employed), expense records, and any letters from HMRC. Not sure what counts? Send what you have through the portal and we'll tell you exactly what's missing — chasing paperwork is part of the job.
Do I need to visit an office in Blackfen?
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 Blackfen or anywhere else in South East London.
I searched "self assessment near me" — is this service really local to Blackfen?
Blackfen 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 Blackfen town centre or the edge of South East London. If you'd rather talk it through first, WhatsApp us — a real person answers.
Who will actually handle my self assessment?
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
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.
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.
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.
Inside-IR35 and outside-IR35 engagements need different setups — sometimes umbrella, sometimes the company, sometimes both across a year. Contractors who plan this per-engagement keep more and worry less.
Selling online, freelancing on the side, renting out equipment — each can be a "trade" in HMRC's eyes once it's done with a profit motive. The good news: registering is straightforward, expenses become claimable, and done early it's a non-event.
HMRC runs nudge-letter campaigns to crypto holders based on exchange data. If there are undeclared gains in past years, a voluntary disclosure is dramatically cheaper than waiting for the letter — penalties are scaled to cooperation.
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.
General guidance, not personal advice — thresholds and dates change. For advice on your own position in Blackfen, message us and we'll answer against your actual numbers.
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