The verdict in three sentences
For a 22-person accounting firm in Dublin or Rennes, the website has two jobs: win startup founders who compare firms online, and cut document exchange by email. The site itself costs 6,000 to 15,000 EUR excluding VAT; a client portal connected to practice software such as Pennylane, Tiime, MEG, Xero or Sage adds 4,000 to 12,000 EUR. Director salary and tax calculators are the sector's best generator of qualified meetings.
What an accounting firm website costs in 2026
The managing partner chooses between a sober brochure site and a real business development tool. Price mainly follows the number of interactive tools and the depth of integrations.
| Item | Scope | Indicative budget (excl. VAT) | Timeline |
|---|---|---|---|
| Brochure site | 15 to 25 pages, services, team, indicative fees, blog | 6,000 to 9,000 EUR | 6 to 8 weeks |
| Startup pages | Journey by company type (limited company, sole trader), online booking | 1,500 to 3,000 EUR | + 2 weeks |
| Calculators | Director pay, social charges, corporation tax vs income tax, 2 to 4 tools | 2,000 to 5,000 EUR | + 2 to 3 weeks |
| Simple client portal | Secure login, document upload, links to practice software | 4,000 to 6,000 EUR | + 3 weeks |
| Integrated client portal | API sync with practice software, dashboard, e-signature | 8,000 to 12,000 EUR | + 5 to 6 weeks |
| Maintenance and hosting | EU hosting, backups, updates, annual tax rate updates | 150 to 450 EUR per month | Ongoing |
These are 2026 estimates for a Dublin, Rennes or Paris agency. A complete site with calculators and an integrated portal therefore lands between 15,000 and 27,000 EUR.
Client portal: choosing the right level of integration
Most firms already use practice software with its own client portal. The goal is not to build yet another space clients will ignore.
| Practice software | Native portal | Integration with the site | Recommended use |
|---|---|---|---|
| Pennylane | Yes, full client app | Open API, single sign-on from the site | Direct link plus summary dashboard |
| Tiime | Yes, free mobile app for clients | Partner API, receipt capture | Promote the app, site as entry point |
| MEG (Cegid) | Yes, collaborative portal | Connectors and exports, heavier integration | Custom portal if specific needs |
| Xero, Sage, IRIS | Variable (Xero Practice Manager, Sage portals) | APIs or third-party connectors | Simple document upload space |
| No client-facing tool | No | Full custom build | Custom portal, 8,000 to 12,000 EUR |
The right choice for a 22-person firm: a single entry point on the website that links to the practice software portal and adds what it lacks (engagement letter with e-signature, booking, permanent documents). EU data hosting and GDPR compliance must be documented in the privacy policy.
Calculators and content: attracting startup founders
Searches like 'accountant Dublin', 'set up a limited company' or 'director salary vs dividends' come from high-value prospects. A calculator that asks for expected revenue and planned structure, then offers a free 30-minute call to refine the numbers, often converts 3 to 6% of its users into contact requests, versus 0.5 to 1% for a standard contact page. Rates (social contributions, thresholds, corporation tax bands such as 12.5% in Ireland or 15% then 25% in France) must be updated every January: put it in the maintenance contract.
Mini case study
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Kolonell builds websites that attract clients, optimized for the Sénégalese market. Free quote in 2 minutes.
Catherine, partner at a 22-person accounting firm, invests 19,000 EUR: website, two calculators and a client portal connected to Pennylane. The calculator attracts 900 users a month; at 4%, that is 36 requests, 6 of which become clients. At average fees of 2,400 EUR a year for a small limited company, that is 14,400 EUR of extra recurring revenue for every month of acquisition. On the production side, ending documents sent by email saves about 15 minutes per client per month across 450 clients, more than 110 hours monthly. The project pays for itself in under three months.
FAQ
How much does an accounting firm website cost in 2026?
Budget 6,000 to 15,000 EUR excluding VAT for the site, calculators included depending on how many. With a portal integrated with your practice software, the total reaches 15,000 to 27,000 EUR.
Do we need a custom portal if our software already has one?
Not necessarily: an entry point from the site to the existing portal costs 4,000 to 6,000 EUR. A custom build at 8,000 to 12,000 EUR makes sense if you want a dashboard or services the native portal lacks.
Can we publish our fees on the website?
Yes, and founders appreciate a range, for example from 150 EUR a month for a micro business. It filters out poor-fit leads and shortens the first meeting.
Are calculators legally reliable?
They provide an estimate, with a clear disclaimer that it does not replace personalised advice. Annual rate updates cost about 300 to 800 EUR.
How long does the project take?
Allow 8 to 10 weeks for the site and calculators, 12 to 16 weeks with an integrated portal. Avoid scheduling acceptance testing during peak tax filing season.
Let's scope your project. Tell us your firm size, practice software and target clients, and we will price a site with calculators and a client portal between 6,000 and 27,000 EUR, delivered in 8 to 16 weeks. 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.
