The verdict in three sentences
A legal SaaS (Clio, PracticePanther, MyCase) covers 80 % of firms: conflict checks, calendar, time tracking and billing out of the box for 40-90 USD/user/month. A custom build is justified when the firm has an atypical workflow (mass litigation, complex disbursement re-billing, dedicated client portal) or seeks independence from the vendor over 5 years and beyond. The real risk is not price but unbilled time: every forgotten hour is lost revenue.
SaaS vs custom: 2026 figures
The legal practice software market has consolidated around subscriptions. Order of magnitude for 2026, New York market.
| Item | Legal SaaS | Custom build |
|---|---|---|
| Cost per user / month | 40 - 90 USD | 0 (owned) |
| Acquisition cost | 0 - 2 000 USD (setup) | 50 000 - 110 000 USD |
| Annual maintenance | Included | 12 - 18 % of project |
| Conflict-of-interest checks | Standard | Custom |
| Time-based billing | Yes | Yes, customisable |
| Data privacy / privilege | Certified hosting | Full control |
| Time to go-live | 3 - 8 weeks | 4 - 7 months |
5-year TCO by headcount
2026 order-of-magnitude simulation: SaaS at 70 USD/user/month vs custom at 75 000 USD + 15 % annual maintenance.
| Attorneys + staff | 5-yr TCO SaaS | 5-yr TCO custom | Gap |
|---|---|---|---|
| 6 users | 25 200 USD | 131 250 USD | SaaS +106 050 USD |
| 12 users | 50 400 USD | 131 250 USD | SaaS +80 850 USD |
| 25 users | 105 000 USD | 131 250 USD | SaaS +26 250 USD |
| 35 users | 147 000 USD | 131 250 USD | Custom -15 750 USD |
| 50 users | 210 000 USD | 138 750 USD | Custom -71 250 USD |
Mini case study
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Mr. Berthet, partner at a 14-attorney business law firm in Manhattan. Before, time entry was done on spreadsheets: roughly 6 % of billable time was never captured. On fee revenue of 2.8M USD, that is 168 000 USD of missed billing per year. Moving to a SaaS at 70 USD x 14 users (11 760 USD/year) with timer-based entry and weekly review, he recovers half the lost time: +84 000 USD billable/year for under 12 000 USD in subscription. ROI reached in under 2 months.
FAQ
Does SaaS really handle conflict-of-interest checks? Yes, leading vendors automatically screen opposing parties and existing clients on matter opening. A custom module only becomes useful for highly specific ethics rules.
How is privilege protected with SaaS? Require in-region certified hosting, encryption at rest and a data-processing agreement. Custom allows fully controlled hosting if the firm wants it.
What gain on time-based billing? Firms typically recover 10 to 15 % of previously lost billable time simply by making capture reliable. That is the leading economic argument.
How long to deploy? SaaS is live in 3 to 8 weeks with matter migration. Custom takes 4 to 7 months for a matters + calendar + time + billing scope.
Can we migrate from SaaS to custom later? Yes, by exporting matters and history via API or structured files. That is the logical path once the firm exceeds 30-35 users.
Let's scope your project. Tell us your user count, current tool and annual matter volume, and we will price the SaaS setup or custom core (indicative budget 50 000 - 110 000 USD). 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.
