The verdict in three sentences
In a firm, uncaptured time is evaporated revenue: 5 to 15 % of billable revenue is lost for lack of reliable capture and fast invoicing. An automated time-billing system (continuous capture, per-fee-earner rates, invoice generation and reminders) costs 10 000 to 30 000 EUR in 2026, delivered in 2 to 4 months. The maths is simple: recovering even 5 % of an 800 000 EUR revenue repays the project in under a year.
Where revenue leaks
Under-billing does not come from one hole but from an accumulation of micro-losses. Identifying them lets you quantify the gain from automation.
| Loss source | Cause | Estimated billable-revenue loss |
|---|---|---|
| Uncaptured minutes | Deferred entry, end-of-day gaps | 3-6 % |
| Ignored short tasks | Calls, emails, reviews < 15 min | 2-4 % |
| Late / unissued invoices | Admin delay, closed matters forgotten | 1-3 % |
| Wrong hourly rate applied | Wrong fee-earner or wrong matter | 1-2 % |
| Untracked discounts | Unmanaged goodwill gestures | 1-2 % |
In total, 5 to 15 % of billable revenue evaporates. For a firm at 800 000 EUR revenue, that is 40 000 to 120 000 EUR per year.
Recovered revenue and ROI
Automation does not recover everything but captures a meaningful share of these losses from year one. Here is the 2026 order of magnitude by firm size.
| Firm annual revenue | Project cost | Recovered revenue/yr (est. 6 %) | Payback |
|---|---|---|---|
| 400 000 EUR | 10 000-15 000 EUR | ~24 000 EUR | < 8 months |
| 800 000 EUR | 15 000-22 000 EUR | ~48 000 EUR | < 6 months |
| 1 500 000 EUR | 22 000-30 000 EUR | ~90 000 EUR | < 4 months |
These estimates assume real adoption of time capture by lawyers: that is the key factor, more than the tool itself.
Mini case study
Mr Diallo, partner at a 7-lawyer employment firm in Manchester, bills 720 000 EUR/yr and suspects leakage. An audit reveals 9 % under-billing, about 65 000 EUR/yr. He invests 19 000 EUR in a mobile time-capture module (per-matter timer, auto categorisation) with invoice generation and reminders. Over 12 months, the firm recovers an extra 6.5 % of revenue, i.e. 46 800 EUR, mainly by capturing short tasks previously ignored. The project pays back in 5 months, and average invoice issuance drops from 22 to 6 days.
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FAQ
Will lawyers actually record their time?
That is the real issue. One-tap mobile capture, a per-matter timer and automatic reminders sharply raise adoption. Without good ergonomics, even the best tool fails.
How long before I see a return?
The first weeks already surface unbilled short tasks. Full financial return is measured over 3 to 6 months, often under a year of payback.
Can it handle several rates and fixed fees?
Yes: rate per fee-earner, per matter type, fixed fees, caps and tracked discounts. The tool applies the right rate automatically based on matter and fee-earner.
Does automation handle invoice reminders?
Yes: automatic reminders at day 15, 30, 45 with outstanding tracking. It is often the fastest source of recovered cash.
Do I need to start from scratch or plug onto what I have?
A time-tracking module can plug onto your current practice software via API, or be built into a full custom project. The plug-in route alone cuts cost to 10 000-16 000 EUR.
Let's scope your project. Share your annual revenue, lawyer count and current practice software: we will estimate recoverable revenue and the automation scope. 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.
