The verdict in three sentences
A custom law practice management platform runs between USD 60,000 and 145,000 in 2026, while a legal SaaS costs USD 45-130 per user per month. SaaS wins for a small firm that needs to launch fast; custom wins once you pass 10-12 attorneys, when your workflows (time-tracking, billing, privilege) are specific, or when client data sovereignty matters. The real question is not the sticker price but the 5-year total cost, computed below.
What a custom firm platform covers
A complete tool covers the entire matter lifecycle: matter intake with conflict-check, task tracking, time entry, billing (hourly, flat fee, contingency), a document management system with privilege handling, and data-protection compliance. Here are the 2026 ranges per module (estimate, order of magnitude).
| Module | Indicative timeline | Custom cost (USD) |
|---|---|---|
| Matter management + conflict-check | 3-5 weeks | 13,000 - 24,000 |
| Multi-rate time-tracking | 2-4 weeks | 9,000 - 18,000 |
| Billing (hourly/flat/contingency) | 3-5 weeks | 13,000 - 26,000 |
| DMS + privilege handling | 3-4 weeks | 11,000 - 22,000 |
| Secure client portal | 2-4 weeks | 9,000 - 20,000 |
| Compliance + audit | 1-2 weeks | 5,000 - 11,000 |
| Full project | 4-7 months | 60,000 - 145,000 |
Build vs buy: the real 5-year cost
SaaS looks cheaper upfront, but its cost grows linearly with headcount. Five-year comparison (custom: upfront + USD 1,800/month support; SaaS: USD 90/user/month average).
| Attorneys | SaaS 5 yrs (USD) | Custom 5 yrs (USD) | Verdict |
|---|---|---|---|
| 5 attorneys | 27,000 | 158,000 | SaaS |
| 10 attorneys | 54,000 | 168,000 | SaaS |
| 15 attorneys | 81,000 | 178,000 | Close |
| 25 attorneys | 135,000 | 188,000 | Nuanced |
| 40 attorneys | 216,000 | 205,000 | Custom |
| 60 attorneys | 324,000 | 225,000 | Custom |
Beyond dollars, a SaaS imposes its workflows and export limits, while custom makes you owner of the code and the data. For a firm handling sensitive matters, control over privilege can justify the investment well before the financial break-even point.
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Mini case study
Mr. Bennett, managing partner of an 18-attorney firm in New York, pays 18 x USD 100/month for SaaS, i.e. USD 21,600/year. His associates lose about 25 minutes/day re-entering time between calendar and billing. A custom tool at USD 118,000, with time-tracking wired into the calendar, removes 20 of those 25 minutes. Across 18 attorneys at USD 250/billable hour, recovering 20 min/day x 210 days represents about USD 157,000/year of potential additional billable time. The investment pays back in under a year, even converting only a third of that time.
FAQ
How much is the minimum useful version? A core of matter + time-tracking + billing starts around USD 60,000 for four months of development, excluding advanced modules.
What annual maintenance budget should I plan? Expect support of USD 1,800 to 4,000/month, i.e. USD 22,000 to 48,000/year, covering fixes, legal updates and secure hosting.
Does custom protect privilege? Yes, and it is an advantage: encryption, matter-level partitioning and controlled hosting are configurable, which few offshore SaaS vendors guarantee.
How long before go-live? Between 4 and 7 months depending on module count, with a usable first version generally by month three.
Can we migrate from an existing SaaS? Yes; importing matters and billing history typically costs USD 5,000 to 14,000 depending on data volume and quality.
Let's scope your project. Share your attorney count, priority modules (matters, time-tracking, billing, DMS) and an indicative budget. 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.
