The verdict in three sentences
For a legal department juggling dozens of matters in parallel, a custom tool (EUR 35,000 to 85,000) centralizes documents, deadlines and alerts where spreadsheets and inboxes fail. The budget depends on the number of modules: the DMS and deadline calendar form the base, e-signature and reporting are extensions. ROI is read not in hours saved but in missed-deadline and liability risk avoided, quantifiable at tens of thousands of euros.
Cost per module: build at the right scope
A legal case-management tool is assembled from bricks. You don't need everything upfront: start with the base, add high-value modules later.
| Module | 2026 cost (EUR) | Indicative time |
|---|---|---|
| Base matters + DMS | 18,000 to 32,000 | 6 to 8 weeks |
| Deadline calendar + alerts | 8,000 to 15,000 | 3 to 4 weeks |
| E-signature integration | 6,000 to 12,000 | 2 to 3 weeks |
| Reporting & dashboards | 7,000 to 14,000 | 3 to 4 weeks |
| Staff / internal-client portal | 9,000 to 18,000 | 4 to 5 weeks |
| Full scope total | 48,000 to 91,000 | 12 to 20 weeks |
Annual maintenance (8 to 12 % of the build) covers fixes, regulatory updates and secure EU hosting.
ROI: the cost of risk avoided
A legal department measures not just hours but risk. A missed deadline (limitation period, appeal window, regulatory filing) can be very costly.
| Risk item | 2026 unit cost estimate | Frequency avoided/year |
|---|---|---|
| Missed litigation deadline | EUR 20,000 to 60,000 | 1 to 2 |
| Late regulatory-filing penalty | EUR 5,000 to 30,000 | 2 to 4 |
| Lost document / file reconstruction | EUR 2,000 to 8,000 | 5 to 10 |
| Document search time | EUR 3,000 to 6,000 (hours) | continuous |
If the tool avoids even one missed deadline and two penalties per year, it neutralizes EUR 30,000 to 120,000 of annual risk, far above its running cost.
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Mini case study
Sophie, general counsel of a 400-employee industrial group in London. Her team of 4 lawyers tracks 280 active matters on shared spreadsheets. In 2025, two late regulatory filings generated EUR 24,000 in penalties. A custom tool at EUR 62,000, with a deadline calendar and automatic alerts, costs about EUR 6,800/year in maintenance. By removing those delays and saving 30 minutes of document search per lawyer per day (about 1,000 hours/year at EUR 45, ≈ EUR 45,000), the tool is paid back in the first year.
FAQ
Isn't a well-organized spreadsheet enough? At low volume, yes. Beyond 100 active matters and 3 users, the spreadsheet becomes a source of errors and missed deadlines: the risk quickly exceeds the cost of a real tool.
How long to deploy the base alone? The base matters + DMS ships in 6 to 8 weeks. You can start with that scope then add alerts and signature later.
Is e-signature integration complex? No, budget EUR 6,000 to 12,000 and 2 to 3 weeks to connect an eIDAS-compliant provider.
What security for sensitive matters? EU hosting, encryption, fine-grained per-matter permissions, access logging and two-factor authentication are essential in a legal department.
Can it connect to our existing IT (ERP, group DMS)? Yes, via API. Budget EUR 5,000 to 15,000 for integration depending on the complexity of existing systems.
Let's scope your project. Tell us your matter volume, priority modules and target budget, and we'll price a realistic scope deliverable in phases. 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.
