Accounting

Accounting Software Support · South West London

Accounting software setup & support in Castelnau

If your Castelnau business is moving to Making Tax Digital, changing platforms, or staring at a reconciliation that has not balanced for a year, this is the service. We set up, migrate, clean up and train, for clients across South West London, entirely online, with the fee agreed before we start and the work recorded so you can replay it.

from £99 · fixed, one-off

Next deadlines

  • VAT return and payment for the quarter that ended last month
  • MTD quarterly update deadline (7 August, 7 November, 7 February, 7 May)
  • VAT return and payment for the quarter that ended last month
  • VAT return and payment for the quarter that ended last month

Who this is for

Accounting Software Support for Castelnau

Sole traders and small companies in Castelnau starting with cloud accounting for the first time, businesses moving between platforms or off spreadsheets for Making Tax Digital, owners whose software file has become unreliable after years of unreconciled entries, and teams who need to be taught to use the system they already have.

What is included

Everything inside the fixed fee

  • Platform recommendation based on your business, VAT position, MTD obligations and budget, not on commission
  • Chart of accounts tailored to your trade, with VAT codes, bank feeds and opening balances configured
  • Migration from another platform or spreadsheets with historical transactions, customers, suppliers and balances carried over
  • File cleanup: duplicates removed, bank reconciled, suspense cleared, VAT returns reconciled to what was filed
  • Automations configured: receipt capture, recurring invoices, payment reminders, bank rules
  • Recorded 90-minute training session for you or your team, with a written quick-reference afterwards

How it works

Accounting Software Support from Castelnau, step by step

  1. 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.

  2. 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.

  3. 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.

  4. 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

No hourly rate and no surprise invoice. Castelnau clients know the fee for accounting software support before they send a single document, and it stays fixed.

We work to the HMRC and Companies House calendar, not an appointment diary. Clients in Castelnau get reminders at 60, 30 and 7 days before each date that applies to accounting software support.

We serve Castelnau remotely by design: records by WhatsApp or email, drafts back for approval, filing electronic. The saving on premises is passed to you in the fee for accounting software support.

A named person handles your accounting software support from Castelnau and knows the file, so you are not re-explaining your business to a different helpdesk each time.

We explain accounting software support in the words Castelnau business owners use, not in accountant's shorthand, and we show our working so you can check it.

Nothing is filed for Castelnau until you have reviewed and approved it. You see the draft, you ask questions, you sign off, then we submit and send you the receipt.

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.

Nearby places we also serve for accounting software support
PlaceDistanceDirection
Barnes0.6 miSW
Riverside, Hammersmith and Fulham0.7 miE
Mortlake and Barnes Common0.8 miSW
Chiswick Homefields0.8 miNW
Fulham Reach1.0 miNE
Ravenscourt Park1 miN
Palace Riverside1 miE
Munster1 miE

Worth knowing

Rules that come up in this work

Confirmation statements and identity verification

Companies House has tightened its requirements under the Economic Crime and Corporate Transparency Act: every company needs a registered email address and an appropriate registered office, every statement includes a lawful-purpose declaration, and every director and PSC must verify their identity. The confirmation statement, due annually with a £50 fee, is where most of this is confirmed.

CIS deductions

CIS turns construction subcontractors into advance taxpayers: a fifth of every labour payment goes to HMRC before they see it. Registering keeps the rate at 20% rather than 30%; gross payment status, for established businesses with a clean record, removes deductions altogether. The annual return is where the overpayment comes back, and filing it early brings the refund sooner.

Salary versus dividends

Paying yourself from a company involves two routes with different tax treatment. Salary through payroll is a company expense and builds a National Insurance record; dividends come from post-tax profit at lower personal rates. Undocumented drawings that are neither become director's loans, with a 35.75% section 455 charge if not repaid within nine months of the year end.

Director's loan accounts

The most common tax problem in owner-managed companies is an overdrawn director's loan account: drawings taken during the year that were never declared as dividends or salary. The company faces a 35.75% charge on the balance outstanding nine months after the year end, and the director may have a benefit in kind. We review the account before every year end to clear it properly.

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.

Corporation Tax rates and marginal relief

Companies pay Corporation Tax at 19% on profits up to £50,000 and 25% on profits over £250,000. Between those figures marginal relief applies, producing an effective rate that rises gradually and a marginal rate of 26.5% on each pound in the band. The thresholds are divided by the number of associated companies, so a director with two companies has thresholds of £25,000 and £125,000 for each.

Late filing penalties

Lateness is expensive in a way that compounds. For individuals, £100 immediately, then daily penalties, then percentage-based ones at six and twelve months, with interest running on unpaid tax throughout. For companies, Companies House penalties scale with delay and double on repeat, and HMRC adds its own for a late CT600. Filing on time is the cheapest tax planning there is.

Questions

Accounting Software Support questions from Castelnau

How long does setup or migration take?

A new setup is usually complete within three working days of receiving your details and last accounts. A migration takes one to two weeks depending on the volume of history and the state of the old data. A cleanup depends on how broken the file is, and we give you a timeline with the fixed quote.

Do I need Making Tax Digital-compatible software?

If you are VAT registered, yes, already. If you are a sole trader or landlord with qualifying income over £50,000, yes, since April 2026, with lower thresholds following. Every platform we set up is MTD-compatible and we authorise it with HMRC as part of the setup.

Can you move my history from my old software?

Yes. Migration from £199 brings across customers, suppliers, outstanding invoices and bills, the chart of accounts and historical transactions, typically for the current and previous financial years, with balances reconciled to the old system before it is closed. More history or very large files are quoted before we start.

What is a file cleanup and when do I need one?

When the bank has not reconciled for months, the suspense account has a large balance, there are duplicate transactions or customers, VAT returns in the software do not match what was filed, or the balance sheet contains figures nobody can explain. From £149 we reconcile, correct and document the file so it can be relied on.

Which software do you recommend?

It depends on your business. Sole traders with simple needs suit the low-cost MTD-compatible platforms; VAT-registered businesses with stock, multiple currencies or e-commerce integrations need one of the major cloud platforms. We recommend on fit and price and we do not take commission, so the advice is not steered by referral income.

What does the £99 setup include?

Creating the file with your business details and financial year, a chart of accounts tailored to your trade, VAT scheme and codes configured, bank and card feeds connected, opening balances entered from your last accounts, invoice template branded, and the software authorised with HMRC for MTD where relevant. You come away ready to use it.

Do you have an office in Castelnau?

No. IGI Accounting is an online-only firm. We serve Castelnau and every other UK postcode remotely, with records sent by WhatsApp or email and everything filed electronically. The absence of local premises is why the fee for accounting software support is the same in Castelnau as anywhere else in the country, and why there is nothing to visit and nothing to print.

Is accounting software support in Castelnau really the same price as elsewhere?

Yes. The fee published on this page is what a client in Castelnau pays and what a client in any other part of England pays. It is confirmed in writing before work starts and the invoice matches the quote. Where a higher package applies because your situation is more complex, we say so at the quote stage, never afterwards.

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.

WhatsApp for a fixed quote