The verdict in three sentences
Custom case management software for a law firm costs between 45,000 and 120,000 EUR in 2026, while a legal SaaS (Clio, Secib style) runs at 40-100 EUR per user per month. The tipping point is time-based billing: reliable time-tracking recovers 8 to 12 % of billable hours currently lost. For a 10-lawyer firm, that often exceeds the annual cost of the software itself.
Legal SaaS vs custom: the 2026 comparison
Confidentiality and time-based billing are the two decisive factors. Here is how the models compare.
| Criterion | Legal SaaS | Custom |
|---|---|---|
| Upfront cost | 0-4,000 EUR | 45,000-120,000 EUR |
| Recurring cost | 40-100 EUR/user/month | Hosting 100-350 EUR/month |
| Time-tracking | Standard | Tailored to workflows |
| Time-based billing | Yes, generic | Custom (rates, discounts) |
| Secure DMS | Variable | Encryption + partitioning |
| Attorney-client privilege | Standard | Reinforced, logged |
| Code ownership | No | Yes |
For 10 lawyers at 70 EUR/month, SaaS costs 8,400 EUR/year, or 42,000 EUR over five years.
The real ROI: recovered billable hours
The true gain is not lower software cost but capturing hours currently unrecorded. Simulation for a 10-lawyer firm (2026 order of magnitude).
| Item | Before | After time-tracking |
|---|---|---|
| Billable hours/lawyer/year | 1,400 h | 1,540 h |
| Average hourly rate | 180 EUR | 180 EUR |
| Billable revenue/lawyer/year | 252,000 EUR | 277,200 EUR |
| Gain/lawyer/year | — | +25,200 EUR |
| Firm gain (10 lawyers) | — | +252,000 EUR |
| Average collection delay | 62 d | 48 d |
Even capturing only +8 % of hours, the annual gain far exceeds the cost of a custom build amortised over five years.
Mini case study
Mr. Fontaine runs an 8-lawyer firm in Midtown Manhattan. His partners estimate losing 10 % of billable hours through poor recording. At an average rate of 170 EUR and 1,350 billable hours/year/lawyer, each lawyer generates 229,500 EUR; recovering 10 % adds 22,950 EUR/year/lawyer, i.e. 183,600 EUR/year for the firm.
He invests 82,000 EUR in a custom tool (mobile time-tracking, time-based billing, encrypted DMS) plus 3,600 EUR/year hosting. Payback is reached in under 6 months on recovered hours alone.
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FAQ
How much does custom law firm software cost in 2026?
Between 45,000 and 120,000 EUR depending on scope: time-tracking, time-based billing, secure DMS and conflict-of-interest checks.
Does time-tracking really increase revenue?
Yes: firms typically recover 8 to 12 % of unrecorded billable hours. For 10 lawyers, that often exceeds 150,000 EUR/year.
Is a SaaS like Clio or Secib enough?
For a firm under 6 lawyers, often yes. Beyond that, or with reinforced confidentiality needs, custom becomes relevant.
How do you secure attorney-client privilege?
Data encryption, per-matter partitioning, access logging and EU/local hosting. Budget a dedicated 5,000 to 12,000 EUR for security.
Can you bill time with different rates per client?
Yes, that is the point of custom: rates per lawyer, per client, per matter type, with automatic discounts and caps.
Let's scope your project. Tell us your lawyer count, average hourly rate and whether time-based billing is your priority. 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.
