Self Assessment tax returns in St. Mark's — from £129, fixed.
If HMRC expects a tax return from you, we take the whole job off your plate — prepared and filed online for St. Mark's clients at one fixed fee, agreed in writing first. We work with sole traders, landlords and directors across St. Mark's and neighbouring Surbiton, Seething Wells, Berrylands.
Self Assessment Tax Returns for St. Mark's — done properly, entirely online
Sole traders, freelancers, landlords, company directors, higher earners and anyone in St. Mark's 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 St. Mark's businesses pick Bohzo
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 — St. Mark's 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 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 St. Mark's 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 St. Mark's pays the same as everywhere else.
There's no office to fund in St. Mark's 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 St. Mark's: from first message to filed
A WhatsApp message from St. Mark's 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 St. Mark's. 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 St. Mark's as anywhere — by design
St. Mark's sits in South West London (KT6), and like everywhere we serve, it gets the identical service and fee as central London — because nothing about our work depends on where you are. What matters is your situation, your records and your deadlines; all three travel over WhatsApp just fine.
London clients in St. Mark's 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 St. Mark's
St. Mark's sits in the borough of Kingston upon Thames (St Mark's & Seething Wells ward), KT6 postcode area. Wherever you are around St. Mark's, 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 St. Mark's | Direction |
|---|---|---|
| Surbiton | 0.2 miles | south-west |
| Seething Wells | 0.4 miles | south-west |
| Berrylands | 0.7 miles | east |
| Kingston upon Thames | 1.0 miles | north |
| Surbiton Hill | 1.0 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 |
St. Mark's 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 St. Mark's?
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 St. Mark's or anywhere else in South West London.
I searched "self assessment near me" — is this service really local to St. Mark's?
St. Mark's 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 St. Mark's town centre or the edge of South West 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.
Tax, briefly — the parts that affect St. Mark's
HMRC receives data directly from online platforms about sellers' income. If a side hustle has grown past the £1,000 trading allowance, coming forward first is always cheaper than being written to — penalties scale with how the disclosure starts.
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.
Crypto traders rack up hundreds of taxable events without noticing, because every swap counts as a disposal. Specialist software plus the pooling rules turns the mess into a number; guessing does not.
The best salary-dividend mix moves with each year's thresholds and your other income. Setting it once in April — rather than guessing through the year — is one of the simplest pieces of planning a director can do.
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.
Register with HMRC by the 5 October after your first tax year of trading, open a separate business account, and put a fixed slice of every payment aside for tax. Do those three things and your first January will be boring — the good kind.
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.
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.
General guidance, not personal advice — thresholds and dates change. For advice on your own position in St. Mark's, message us and we'll answer against your actual numbers.
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