The verdict in three sentences
For a business law firm of 15 to 25 attorneys, custom time tracking and billing software built with Kolonell costs USD 20,000 to 37,000 in 2026 (12,000,000 to 22,000,000 FCFA), delivered in 12 to 18 weeks. Almost all of the return comes from recovering unrecorded hours, which represent 10 to 20% of billable time in a firm that still logs time at the end of the week. International licenses at USD 60 to 90 per user per month remain sensible for a small practice, but become more expensive over three years from 15 users onwards, and rarely fit multi-currency billing or non-US entities cleanly.
What a business law firm's software must cover
A firm advising multinationals, banks and mining groups does not bill like a neighborhood litigation practice. It juggles flat fees for company formations, hourly billing for acquisition due diligence, monthly retainers for ongoing advice and sometimes success fees. The software must start from the engagement letter signed with the client and derive the billing rules from it automatically.
The essential building blocks in 2026:
- Mobile time entry: phone timer, voice entry, automatic reminder at 6 pm if the day has fewer than 6 hours logged.
- Matters and conflict checks: search on parties, officers and related companies before opening any matter, with an audit trail of the check.
- Multi-currency billing: invoices in USD, EUR and FCFA, exchange rate locked on the invoice date, tax handling per client.
- Partner pre-billing: draft invoice sent to the responsible partner, edited and approved in two clicks.
- Dashboard: realization rate (billed hours over worked hours), collection rate, outstanding balance by client and partner.
| Module | Indicative 2026 cost (USD) | Timeline | Expected gain |
|---|---|---|---|
| Mobile time entry + reminders | 4,200 to 6,700 | 3 weeks | +8 to 12% hours captured |
| Matters, parties and conflict checks | 3,300 to 5,800 | 3 weeks | Check in 2 minutes instead of 30 |
| Engagement letters and billing rules | 3,300 to 5,800 | 2 weeks | No forgotten flat fee |
| Billing in USD, EUR, FCFA and tax | 4,200 to 7,500 | 3 weeks | Invoices out on day 5 instead of day 25 |
| Reminders and collections tracking | 1,700 to 4,200 | 2 weeks | Payment delay cut by 20 days |
| Partner dashboard | 2,500 to 5,000 | 2 weeks | Real-time profitability per matter |
| Secure client portal (option) | 2,500 to 5,000 | 2 weeks | Fewer email exchanges |
The core (time, matters, billing) sits around USD 20,000 (12,000,000 FCFA). The full version with client portal and advanced dashboards approaches USD 37,000 (22,000,000 FCFA).
Custom build or international license: the three-year comparison
The major legal practice management platforms are solid, but each firm ends up working around them: custom invoice layouts, matter structures for corporate groups, exports to the outside accountant, data residency questions from institutional clients.
| Criterion (18 attorneys, 4 assistants) | International license | Custom build with Kolonell |
|---|---|---|
| Entry cost | USD 0 to 2,500 setup | USD 20,000 to 37,000 |
| Annual cost | 22 users × USD 75 × 12 = USD 19,800 | Maintenance USD 330 to 500 per month, i.e. USD 4,000 to 6,000 |
| Total cost over 3 years | About USD 62,000 | USD 32,000 to 55,000 |
| Multi-currency billing and local tax | Partial, spreadsheet workarounds | Native |
| Conflict checks on corporate groups | Generic | Adapted to your client structures |
| Data hosting | Vendor's choice | Your choice, with encrypted backups |
| Feature roadmap | Vendor's roadmap | Your priorities |
Order of magnitude 2026, with USD 1 at about 600 FCFA. Under 10 users, a license is usually cheaper. Beyond 15, custom becomes competitive from the second year, and the gap widens with every hire.
Mini case study
Daniel, managing partner of a Midtown business law firm, has 18 attorneys billing an average of 1,200 hours a year, i.e. 21,600 hours. A calendar audit shows that 15% of worked time is never recorded, about 3,240 hours. At an average rate of USD 450, the leak represents USD 1,458,000 a year.
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The firm invests USD 28,000 in custom software, plus USD 420 of monthly maintenance. Conservative target: recover 40% of lost hours, i.e. 1,296 hours. After write-downs, assume a 70% realization rate: 1,296 × 450 × 0.7 = USD 408,240 of additional revenue in year one. The project pays back within a month, and invoices now go out 5 days after month end instead of 25.
FAQ
How much does billing software for a law firm cost?
Budget USD 20,000 to 37,000 (12 to 22 million FCFA) for a custom tool covering time, matters and multi-currency billing. Maintenance runs USD 330 to 500 per month depending on volume and hosting.
Will attorneys really log time on mobile?
Yes, if entry takes under 10 seconds and a reminder arrives in the evening. In equipped firms, the daily entry rate typically rises from 40% to over 85% within two months.
Can we bill in USD, EUR and FCFA in the same tool?
Yes, each matter carries its currency and the exchange rate is locked on the invoice date. Exchange differences are tracked for the accountant, which avoids several hours of manual adjustments every month.
How are conflict checks handled?
Before a matter is opened, the software searches parties, officers and related companies across the firm's entire history. The search takes under 2 minutes and the result is archived with the partner's approval.
How long does migration from spreadsheets take?
Importing clients, open matters and engagement letters takes 2 to 3 weeks within a 12 to 18 week project. Firms often start with a 4-attorney pilot for one month before rolling out.
Let's scope your project. Tell us your headcount, billing models and currencies, and we will send a costed scope between USD 20,000 and 37,000 with a 12 to 18 week plan. 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.
