The verdict in three sentences
For a firm of 10 to 40 lawyers, Clio and similar platforms remain the right choice as long as your processes look like those of most firms. A custom build at €40,000 to €100,000 becomes profitable once billing is complex (fixed fees, success fees, institutional clients with imposed rate cards) or the client portal is a selling point. The real metric is the billed time rate, which typically moves from 72% to 85% when time entry becomes easy and overruns are visible in real time.
What market solutions really cost
Vendors charge per lawyer, with add-ons for document management, e-billing or mobile access. In a 25-lawyer firm, the gap between the entry plan and the configuration actually used is often 40%.
| Item | Clio or equivalent | Custom |
|---|---|---|
| Licence per lawyer per month | €60 to €120 | €0 |
| Annual cost for 25 lawyers | €18,000 to €36,000 | €6,000 to €12,000 (hosting, maintenance) |
| Setup | €3,000 to €10,000 | €40,000 to €100,000 |
| 5-year cumulative cost | €93,000 to €190,000 | €70,000 to €160,000 |
| Billing customisation | Limited to vendor settings | Unlimited (client rate cards, caps, success fees) |
| Client portal | Basic or missing | Your branding, live matter tracking |
| Conflict of interest checks | Manual name search | Automated on parties, groups and directors |
These amounts are 2026 orders of magnitude observed in commercial and litigation firms.
Billed time, lever number one
A London associate billed at €250 to €450 per hour loses on average 4 to 6 hours a week in unrecorded time. Making time entry almost automatic (timer, entry from calendar, suggestions from sent emails) changes the firm's economics.
| Indicator | Before | After a fitted tool |
|---|---|---|
| Billed time rate | 72% | 85% |
| Time entry delay | 5 to 10 days | Under 24 h |
| Invoice issue delay | 30 to 45 days | 10 to 15 days |
| Disputed invoices | 8 to 12% | 3 to 5% |
| Conflict check time | 20 to 40 minutes per matter | 2 minutes |
| Average client payment delay | 60 to 75 days | 40 to 50 days |
GDPR and privilege: non-negotiable
Matter files contain sensitive data covered by legal privilege. A custom tool must include UK or EU hosting, document encryption, fine-grained rights per matter (ethical walls), access logs and a retention policy. Allow 10 to 15% of the budget for these requirements, audit included. It is often the argument that wins a panel tender with a bank or insurer.
Mini case study
James, managing partner of a 20-lawyer firm in the City of London, bills €6 million a year. He replaces his licence (€24,000 a year) with a custom tool at €78,000. The billed time rate moves from 72% to 80% in the first year, roughly 8% extra revenue on the time-based share (65% of revenue): €312,000. Even counting only half that gain for prudence, the investment pays back in under 6 months.
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FAQ
Can we migrate our history from Clio?
Yes. Matters, parties, time and invoices can be exported and migrated in 3 to 6 weeks. Allow €5,000 to €12,000 for a clean migration with consistency checks.
How long does delivery take?
Allow 4 to 7 months depending on scope, with a first phase (time, billing, conflicts) live in 10 to 12 weeks. The client portal comes in phase two.
Is custom suitable for a 10-lawyer firm?
Rarely below 10 lawyers, unless the model is unusual. From 15 lawyers, the 5-year cumulative cost becomes comparable to licences, with a tool you own.
How are e-billing and court platforms handled?
The tool connects to existing flows and prepares invoices in the electronic formats required by clients and regulators. This module costs about €5,000 to €10,000.
Who handles maintenance?
An annual contract at 8 to 12% of the initial cost covers fixes, security updates and minor changes, with a 4 business-hour response time.
Let's scope your project. Tell us your headcount, billing models and current tools, and we will propose a priced scope with indicative budget 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.
