Freelancer Accountants · South West London
Freelancer accountants in Castelnau
Freelancer accounting in Castelnau: sole trader freelancers get bookkeeping and the tax return for £45 a month, limited company freelancers get full compliance for £79, and those who only want the year-end done pay £229 a year. Fixed, published, and the same in Castelnau as in every other part of England.
from £45/mo · fixed, per month
Next deadlines
- Online Self Assessment filing deadline and balancing payment due
- Making Tax Digital for Income Tax: quarterly updates for sole traders and landlords over £50,000 (from April 2026) and over £30,000 (from April 2027)
- Second payment on account due
- Companies House accounts due 9 months after your year end (a 31 December year end files by 30 September)
Who this is for
Freelancer Accountants for Castelnau
Freelancers and independent professionals in Castelnau: designers, developers, writers and editors, marketers, photographers and videographers, consultants, translators, musicians and performers, tutors and coaches, whether trading as a sole trader, through a limited company, or still deciding, and whether full time or alongside employment.
What is included
Everything inside the fixed fee
- Monthly bookkeeping from your bank feed with invoices and expenses captured by phone
- Self Assessment with the self-employment pages for sole trader freelancers, or accounts, CT600 and payroll for company freelancers
- Expense review for the costs freelancers miss: home office, equipment, software, subscriptions, training, travel
- Payments on account and a monthly set-aside figure so the January bill is never a surprise
- Making Tax Digital readiness and quarterly updates when your income reaches the threshold
- A going-freelance starter session covering structure, registration, pricing for tax and what to keep
How it works
Freelancer Accountants from Castelnau, step by step
Tell us your situation
A short message or call about what you do and what needs filing. We ask the questions that determine the right package and nothing more.
Fixed fee in writing
You receive one price for the work, confirmed by email before anything starts. It does not change if the job takes longer than we expected.
Send records, review the draft
Records come by WhatsApp or email. We prepare the draft, explain the figures in plain English and answer your questions.
We file, you get the receipts
Once you approve and the fee is settled, we submit electronically and forward the HMRC or Companies House acknowledgement the same day.
Why IGI
Why Castelnau businesses file with IGI
The price for freelancer accountants is published on this page and is what a client in Castelnau pays. We confirm it in writing first, and the invoice matches the quote.
Deadline-first: the dates that matter for freelancer accountants are shown at the top of this page, diarised for every Castelnau client and chased before they arrive.
No appointments, no travel across South West London, no parking. Everything for freelancer accountants in Castelnau happens online, with a real person on the other end during UK working hours.
You get one contact for freelancer accountants, not a queue. Castelnau clients message the same person throughout and get an answer in working hours, usually within a few hours.
Plain English, with the numbers. Every draft for Castelnau comes with a short explanation of what the figures mean and what, if anything, you should do about them.
You stay in control of freelancer accountants: drafts go to Castelnau clients first, with the figures explained, and nothing leaves us until you say so.
Local facts
About Castelnau
Castelnau is in South West London, within Richmond upon Thames, in the SW13 postcode district, England. Income tax in England follows the UK rates: 20% basic to £50,270, 40% higher to £125,140 and 45% additional, with the personal allowance of £12,570 tapered away above £100,000. National Insurance, VAT and Corporation Tax are UK-wide, and Stamp Duty Land Tax applies to property purchases.
| Place | Distance | Direction |
|---|---|---|
| Barnes | 0.6 mi | SW |
| Riverside, Hammersmith and Fulham | 0.7 mi | E |
| Mortlake and Barnes Common | 0.8 mi | SW |
| Chiswick Homefields | 0.8 mi | NW |
| Fulham Reach | 1.0 mi | NE |
| Ravenscourt Park | 1 mi | N |
| Palace Riverside | 1 mi | E |
| Munster | 1 mi | E |
Worth knowing
Rules that come up in this work
Confirmation statements and identity verification
The confirmation statement is the annual check that the public register is right: officers, registered office, SIC codes, shareholders and the PSC register. It carries a £50 fee and no financial penalty for lateness, but failure to file leads to compulsory strike-off. The identity verification regime introduced in November 2025 has added a further check to every statement.
CIS deductions
The Construction Industry Scheme affects both sides of a construction payment. Contractors must verify subcontractors, deduct the right amount, issue statements and file monthly, with penalties from £100 for each late return. Subcontractors suffer deductions on turnover and recover the excess at the year end. Limited company subcontractors offset deductions against PAYE monthly instead.
The Self Assessment calendar
Four dates govern Self Assessment: 5 October to register, 31 October for paper returns, 31 January to file online and pay, and 31 July for the second payment on account. Missing the January date triggers an automatic £100 penalty before any tax is even considered, so we treat it as the fixed point around which the rest of the year is planned.
Payments on account
A common surprise in Self Assessment is the January payment that is far larger than expected. That is the balancing payment for the year just ended plus the first payment on account for the year ahead, which HMRC sets at half of the bill just calculated. We put the figure in your hands months ahead and tell you how to adjust it legitimately when circumstances change.
Late filing penalties
HMRC's penalties for a late Self Assessment return are automatic: £100 the day after 31 January, £10 a day from three months late up to £900, then the greater of £300 or 5% of the tax at six and twelve months. Interest and separate late-payment penalties apply to the tax itself. Companies House charges £150 to £1,500 for late accounts, doubling for a second consecutive year.
Making Tax Digital for Income Tax
MTD for Income Tax replaces one annual return with quarterly digital updates and a year-end declaration, submitted from software. The threshold is gross trading and property income, measured two years earlier, and started at £50,000 in April 2026 before falling to £30,000 in April 2027. Anyone affected needs digital record keeping in place before their start date, not after.
The VAT registration threshold
The £90,000 VAT threshold is measured over any twelve consecutive months, which is why a strong quarter can tip a business over unexpectedly. Registration must follow within thirty days of the end of the month the threshold was crossed. Below the threshold, voluntary registration is worth considering when customers are VAT-registered businesses and costs carry VAT.
Questions
Freelancer Accountants questions from Castelnau
Do I need to register for VAT?
Only when your taxable turnover in any rolling 12 months exceeds £90,000, or voluntarily before that. Many freelancers with business clients register voluntarily to reclaim VAT on equipment; those with consumer clients usually wait. We monitor your rolling turnover and advise before the threshold is reached.
How do you handle irregular and overseas income?
Irregular income is normal for freelancers and the monthly summary shows the year-to-date position so lean months are planned for. Overseas clients are invoiced without UK VAT in most cases, and any foreign tax withheld can usually be credited against your UK liability. Both are handled within the package.
What is the starter session?
A £99 video call before or soon after you go freelance, covering the sole trader versus company decision, registration with HMRC, how to price so that tax is covered, what records to keep and how, invoicing and payment terms, and the dates that matter. You come away with a written plan. If you then join a monthly package the £99 is credited.
Does Making Tax Digital apply to freelancers?
If your gross self-employment plus property income was over £50,000 in 2024/25 you joined MTD for Income Tax in April 2026; over £30,000 means April 2027; over £20,000 is planned for April 2028. It means digital records and quarterly updates. Our monthly package keeps the records in the right form and submits the updates.
What does the £45 sole trader package include?
Monthly bookkeeping from your bank feed with receipts captured by phone, a monthly summary showing profit and the tax accruing, your Self Assessment with the self-employment pages prepared and filed, payments on account calculated, and deadline tracking. Software is in your name and billed to you separately.
What does the £79 company package include?
Monthly bookkeeping, director payroll with RTI submissions, dividend paperwork, the annual statutory accounts and CT600 filed with Companies House and HMRC, the confirmation statement filed (Companies House £50 fee separate), and deadline tracking. Your personal Self Assessment is added at the published £129 if needed.
Which deadlines matter most for freelancer accountants?
The next four dates that apply to freelancer accountants are shown at the top of this page, calculated from today. For Castelnau clients we diarise every one of them from the day you join and send reminders before each, so the work is done in good time rather than in the last week before a penalty.
How do I get started from Castelnau?
Message us on WhatsApp or email with a sentence about your business and what you need. We reply in working hours with any questions and a fixed fee for freelancer accountants. Once you confirm, we tell you exactly which records to send and the work begins. Most Castelnau clients are set up within a day.
One message from Castelnau, one fixed price
Tell us what you need. You get one fixed fee in writing, and nothing is filed until you approve it.