The verdict in three sentences
Custom legal practice management software in London costs 25,000 to 70,000 EUR in 2026, over a 10 to 18 week build. It centralises matters, time tracking, conflict checks and a client portal on a single GDPR-compliant platform. The ROI is concrete: 8 to 12 hours/week saved per lawyer and 5 to 10 % of fees recovered through time tracking.
Budget lines of a legal software
A legal practice (solicitors, in-house counsel, advisers) needs a tool that links production, compliance and billing. Here is the typical budget breakdown (2026 order of magnitude).
| Line | Detail | Budget share | Indicative cost (EUR) |
|---|---|---|---|
| Matters & parties | Centralisation, history | 25 % | 6,250 - 17,500 |
| Time tracking | Timesheets, rates, rebilling | 20 % | 5,000 - 14,000 |
| Conflict checks | Automated detection | 10 % | 2,500 - 7,000 |
| Client portal | Document sharing, messaging | 20 % | 5,000 - 14,000 |
| DMS & search | Filing, OCR, full text | 15 % | 3,750 - 10,500 |
| Reporting & integrations | KPIs, accounting, export | 10 % | 2,500 - 7,000 |
Add GDPR-compliant EU hosting: 100 to 400 EUR/month depending on data volume and redundancy level.
The quantified ROI: time and fees
The real argument is not cost, but time returned to lawyers and fees secured. 2026 estimate for an 8-lawyer firm.
| Lever | Before | After software | Annual gain |
|---|---|---|---|
| Admin hours/lawyer/week | 14 h | 4 h | 10 h x 8 = 80 h/week |
| Billed fees (1.6 M EUR turnover) | 1.6 M EUR | +7 % | +112,000 EUR |
| Document retrieval | 30 min/matter | 5 min | ~85 % less time |
| Billing errors | 3-5 %/month | < 1 % | Fewer disputes |
| New lawyer onboarding | 3 weeks | 1 week | -66 % |
80 hours saved per week across 8 lawyers, valued at 60 EUR/loaded hour, represent around 230,000 EUR/year of freed capacity, partly rebillable.
Mini case study
James Whitfield, director of a 9-person legal practice in London. He invests 52,000 EUR in custom software, plus maintenance of 900 EUR/month (10,800 EUR/year) and 250 EUR/month hosting (3,000 EUR/year). Year-1 cost: 65,800 EUR. Time tracking recovers 7 % of fees on a 1.6 M EUR turnover, i.e. 112,000 EUR/year. On that effect alone, the project pays back in 7 months, not counting the 10 hours/week returned to each lawyer.
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FAQ
How much does legal practice management software cost?
Between 25,000 and 70,000 EUR in 2026 depending on scope, plus maintenance of 500 to 1,400 EUR/month and 100 to 400 EUR/month for GDPR-compliant EU hosting.
What is the delivery timeline?
10 to 18 weeks. A core of matters + time tracking + portal ships in 10-12 weeks; advanced DMS and conflict checks add 4 to 6 weeks.
Is the client portal really useful?
Yes. It halves e-mails, speeds up document approval and professionalises the firm's image. It is a differentiator against competitors.
How are conflicts of interest handled?
An engine automatically checks parties at each matter opening and alerts on collisions. It mitigates a major regulatory risk.
Is the data GDPR compliant?
Yes: EU hosting, encryption, logging and fine-grained access management. The firm keeps full control over data location.
Let's scope your project. Specify firm size, priority modules (portal, time tracking, conflicts) and an indicative budget (25-70,000 EUR): we'll frame scope and 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.
