The verdict in three sentences
In 2026, a custom collaborative client portal for an accounting firm costs 20,000 to 45,000 EUR excl. tax depending on features. With document OCR, pre-bookkeeping and automatic notifications, it saves 6 to 10 hours per month per staff member. At firm scale, ROI is reached in under a year thanks to recovered data-entry time.
The modules and their price
The portal is not a simple file-drop space. Its value comes from automation upstream of production. Here are the 2026 orders of magnitude.
| Module | Custom cost (EUR excl. tax) | Main gain |
|---|---|---|
| Document upload & filing | 4,000 - 8,000 | end of emails |
| OCR & auto-reading | 6,000 - 12,000 | zero re-entry |
| Pre-bookkeeping | 5,000 - 10,000 | pre-filled entries |
| Notifications & reminders | 2,000 - 5,000 | documents on time |
| Signature & validation | 3,000 - 6,000 | smooth circuit |
| Client dashboard | 3,000 - 6,000 | transparency |
A 30,000 EUR portal generally combines upload, OCR, pre-bookkeeping and notifications — the heart of the time savings.
Calculating ROI: hours x loaded hourly cost
The math is simple: hours saved per staff x loaded hourly cost x headcount x 12 months. Here is the 2026 projection for various firms.
| Firm | Gain/staff/month | Loaded hourly cost | Annual gain |
|---|---|---|---|
| 5 staff | 8 h | 45 EUR | 21,600 EUR |
| 10 staff | 8 h | 45 EUR | 43,200 EUR |
| 15 staff | 8 h | 50 EUR | 72,000 EUR |
| 20 staff | 9 h | 50 EUR | 108,000 EUR |
| 30 staff | 10 h | 55 EUR | 198,000 EUR |
Even a 10-person firm recovers over 43,000 EUR/year — well above the cost of a 30,000 EUR portal.
Mini case study
Elodie, partner at a 10-staff firm in Rennes, invests 32,000 EUR in a portal with OCR and pre-bookkeeping. Each staff member saves 8 hours/month of data entry. At 45 EUR loaded hourly cost, that is 8 x 45 x 10 x 12 = 43,200 EUR/year of recovered capacity. The portal pays back in under 9 months, after which the gain is net every year — not counting client satisfaction from smoother exchanges.
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FAQ
How much does a collaborative client portal cost in 2026?
Between 20,000 and 45,000 EUR excl. tax custom-built depending on modules (OCR, pre-bookkeeping, notifications), plus 12 to 18 % of the build in annual maintenance.
How many hours are actually saved?
Between 6 and 10 hours per month per staff member, mainly on collection, re-entry and follow-ups for missing documents.
Is OCR reliable for accounting documents?
Yes for standard invoices and receipts, with human review on complex cases. It removes most manual re-entry.
Does a portal improve the client relationship?
Yes: it cuts email back-and-forth by 30 to 50 %, secures exchange and gives clients real-time visibility on their files.
Custom portal or a vendor module?
Custom is justified when you want your brand, specific workflows and data ownership; otherwise a vendor module is enough to start.
Let's scope your project. Tell us your headcount, key features (OCR, pre-bookkeeping, notifications) and indicative budget, and we will price the portal and its ROI. 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.
