The verdict in three sentences
Below 8 attorneys, a SaaS license is almost always cheaper and faster to deploy. Above 10 to 12 attorneys, a custom build with an encrypted client portal becomes competitive over three years while fitting your matter workflows exactly. The real decision variable is not the monthly price but the 3-year total cost weighed against attorney-client privilege and integration with your existing stack.
SaaS license vs custom build: the real 3-year cost
A license looks cheap per seat, but you pay per user, every month, forever. Custom is an upfront investment followed by predictable maintenance (support & evolution). Here is the 2026 order of magnitude for a New York firm, using a median SaaS price of $95/attorney/month.
| Attorneys | SaaS license 3 yrs | Custom build + maintenance 3 yrs | 3-yr gap |
|---|---|---|---|
| 4 | $13,680 | $64,000 | +$50,320 (SaaS wins) |
| 6 | $20,520 | $68,000 | +$47,480 (SaaS wins) |
| 8 | $27,360 | $72,000 | +$44,640 (SaaS wins) |
| 10 | $34,200 | $77,000 | +$42,800 (SaaS wins) |
| 15 | $51,300 | $90,000 | +$38,700 (SaaS wins) |
| 25 | $85,500 | $106,000 | +$20,500 (SaaS wins) |
| 40 | $136,800 | $132,000 | -$4,800 (build wins) |
At a standard scope, SaaS stays cheaper over 3 years up to roughly 40 attorneys. Custom only pays off through uncovered needs: bespoke workflows, proprietary integrations, a custom portal, code ownership, or reselling a practice module. Over 5 to 7 years the equation flips more decisively because maintenance stays flat while license fees track headcount growth.
The encrypted client portal: scope and budget
The secure client portal is often the true trigger for going custom: document sharing, matter tracking, encrypted messaging, timestamped uploads. Here are the building blocks and their 2026 cost as dedicated development.
| Portal building block | 2026 budget | Indicative timeline |
|---|---|---|
| Strong auth + client workspace | $4,500–8,000 | 2 weeks |
| Encrypted document sharing + vault | $5,500–10,000 | 2–3 weeks |
| Secure firm/client messaging | $3,500–7,000 | 2 weeks |
| Matter progress tracking | $3,000–5,500 | 1–2 weeks |
| Qualified e-signature | $4,500–9,000 | 2 weeks |
| Email/SMS notifications | $1,800–3,500 | 1 week |
A full encrypted client portal therefore adds $9,000–20,000 depending on scope, on top of the case-management core. On privacy and privilege, budget compliant hosting (certified provider, encryption at rest and in transit, access logging), i.e. $90–280/month of managed infrastructure.
Mini case study
Ms. Bennett, managing partner of an 11-attorney firm in Midtown Manhattan, pays $95/attorney/month, i.e. $12,540/year. She is considering a custom tool at $75,000 (core + encrypted portal) with maintenance at $800/month ($9,600/year). Over 3 years, SaaS = $37,620, custom = $75,000 + $28,800 = $103,800. The $66,180 gap only makes sense if the portal recovers billable time and secures privilege. By reclaiming 2 billable hours/attorney/month at $250/hr thanks to the portal (no more email back-and-forth), the firm bills 11 × 2 × 250 × 12 = $66,000/year in extra billed time: custom pays off from year two.
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FAQ
How much does custom law-firm case-management software cost in 2026?
Budget $45,000–110,000 for the core (matters, calendar, billing), plus $9,000–20,000 for an encrypted client portal. Maintenance runs $500–1,300/month depending on scope.
At how many attorneys does custom pay off?
Over 3 years SaaS is usually cheaper. Custom makes sense around 10 to 12 attorneys when specific needs, code ownership, or a dedicated portal come into play, and wins clearly over 5 to 7 years.
Does the client portal preserve attorney-client privilege?
Yes, provided end-to-end encryption, strong authentication, access logging, and compliant hosting. These requirements add $90–280/month of infrastructure.
How long to deliver the tool?
Budget 8 to 16 weeks by scope: 8 to 10 weeks for a management core, 12 to 16 weeks with encrypted portal, e-signature, and integrations.
Can we migrate from an existing SaaS suite?
Yes, matters and contacts can be migrated via export/import. Budget $3,500–9,000 for data migration plus a prior audit of the existing structure.
Let's scope your project. Tell us your attorney count, integrations (accounting, calendar, e-filing), and whether the encrypted portal is a priority, and we'll frame build vs buy on a $45,000–110,000 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.
