The verdict in three sentences
A London accounting firm website built with an offshore agency such as Kolonell costs 1,220 to 1,830 EUR at Starter level and 1,830 to 3,050 EUR at Growth level in 2026 (800,000 to 2,000,000 FCFA), against 8,000 to 25,000 GBP at a typical London agency. To attract SMEs and foreign subsidiaries, the site must describe bookkeeping, tax and payroll services precisely, with an appointment and engagement letter request journey. Delivered in 3 to 5 weeks, it pays for itself with one client whose annual fees sit between 4,000 and 12,000 GBP.
What a subsidiary's finance director looks for on your site
The finance director of a French or Nigerian subsidiary setting up in London looks for a firm able to handle UK GAAP or IFRS bookkeeping, Corporation Tax and VAT returns under Making Tax Digital, PAYE payroll, and group-format reporting. They compare three firms online before calling. A site that only says "accounting, advisory, audit" without detailing services does not pass this first filter.
| Page or feature | Expected content | Kolonell tier |
|---|---|---|
| Bookkeeping and year-end accounts | Scope, frequency, monthly deliverables | Starter |
| UK tax | VAT, Corporation Tax, MTD, HMRC deadlines, enquiries | Starter |
| Payroll | Payslips, PAYE, RTI, auto-enrolment pensions | Starter |
| Foreign subsidiary support | Companies House setup, group reporting, French version | Growth |
| Engagement letter form | Legal form, turnover, headcount, services wanted | Growth |
| Online booking | Slots with a partner, email or WhatsApp reminder | Growth |
| Tax blog | Budget changes, deadlines, MTD updates | Growth |
The foreign subsidiary page deserves a French version: many francophone groups setting up in London prefer to discuss with their head office in French.
What each option costs in 2026
Kolonell prices follow our 11/10/2026 grid. The other lines are 2026 orders of magnitude for the London market.
| Option | Price | Timeline | What is included |
|---|---|---|---|
| Kolonell Starter site | 1,220 to 1,830 EUR (800,000 to 1,200,000 FCFA) | 3 weeks | 5 pages, services, contact, Google profile |
| Kolonell Growth site | 1,830 to 3,050 EUR (1,200,000 to 2,000,000 FCFA) | 4 to 5 weeks | Detailed service pages, blog, engagement form, booking, EN and FR |
| Kolonell Premium site | 3,050 to 5,340 EUR (2,000,000 to 3,500,000 FCFA) | 5 to 7 weeks | Client document area, animations, advanced SEO |
| London agency | 8,000 to 25,000 GBP | 8 to 12 weeks | Varies, maintenance often extra |
| UK freelancer | 2,500 to 6,000 GBP | 3 to 6 weeks | Rarely a tax blog or second language |
| Kolonell maintenance | 50 to 180 EUR per month | Monthly | Basic, Standard or Premium |
| Kolonell SEO | 150 to 530 EUR per month | Monthly | Essential, Growth, Premium plans |
A secure client area for exchanging documents is possible at Premium level. If the firm wants a full portal with e-signature and case tracking, that is a custom application, which Kolonell prices from 3,810 EUR (2,500,000 FCFA).
Expected return
| Indicator | Cautious assumption | Favorable assumption |
|---|---|---|
| Monthly visits after 6 months | 300 | 900 |
| Engagement requests per month | 2 | 6 |
| Signing rate | 25% | 35% |
| New clients per year | 6 | 25 |
| Average annual fees per client | 4,000 GBP | 8,000 GBP |
These figures are orders of magnitude for a mid-sized London firm; they depend on content work and existing reputation.
Mini case study
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Priya, partner in a 12-person accounting firm in London, wants to target foreign subsidiaries. She picks a bilingual Growth site at 2,590 EUR (1,700,000 FCFA, about 2,200 GBP), with Standard maintenance at 110 EUR a month, roughly 3,300 GBP in the first year. A single bookkeeping and tax engagement for a subsidiary at 6,000 GBP in annual fees covers the investment, and each client kept three years represents 18,000 GBP. A working assumption, to be compared with her own conversion rate.
FAQ
Can an accounting firm advertise online?
Yes, within ICAEW or ACCA guidance on fair, non-misleading promotion. Avoid quantified tax-saving promises and favor informative service pages.
Do I need a second language?
Yes if you target subsidiaries of francophone groups: a French version of the 5 to 6 key pages is included at Growth level, 1,830 to 3,050 EUR.
How long until the first requests arrive?
The Google profile and service pages bring contacts in 2 to 4 months for queries such as "accountant for foreign subsidiary London". More competitive queries need 6 months of regular content.
Can clients upload documents through the site?
Yes, with a secure client area at Premium level, 3,050 to 5,340 EUR. For a full portal with e-signature, plan a custom application from 3,810 EUR.
Is working with an offshore agency risky?
The main risks are communication and time zones: Dakar is on GMT, the same as London in winter, one hour behind in summer. Kolonell works with written specifications, weekly reviews and a fixed-price quote.
Let's scope your project. Tell us your priority services, your target (local SMEs or foreign subsidiaries) and indicative budget through the free quote form for an estimate with a firm timeline. Detailed quote within 48 h. WhatsApp +221 77 596 93 33.
Mohamed Bah
Fondateur, Kolonell
Passionate about digital and entrepreneurship in Africa, Mohamed has been helping Sénégalese businesses with their digital transformation since 2020. Founder of Kolonell, he believes every SME deserves a professional and accessible online présence.
