The verdict in three sentences
For a Miami law firm, vertical legal SaaS (case management platforms) at 45-90 USD/user/month covers the basics but lets revenue leak through unrecorded time. A custom build (50 000 to 110 000 USD) with a smooth timesheet, hourly billing and a secure client vault recovers on average +18 % of billable time. For an 8-person firm, break-even lands around 28 months at full cost, faster once recovered billings are counted.
Build vs buy: the real financial comparison
The question is not just licence price, but the revenue lost on unbilled hours and data security.
| Item | Vertical legal SaaS | Custom Kolonell build |
|---|---|---|
| Entry cost | 0 to 4 500 USD | 50 000 to 110 000 USD |
| Monthly cost | 45 to 90 USD/user | Maintenance 15 %/yr |
| Year 1 (8 users) | 4 320 to 8 640 USD | 50 000 to 110 000 USD |
| Year 3 cumulative (8 users) | 12 960 to 25 920 USD | 65 000 to 143 000 USD |
| Timesheet + mobile entry | Standard | Custom, optimized UX |
| Secure client vault | Vendor-dependent | Encrypted, to spec |
| Code ownership | No | Yes |
Where the lost revenue hides
The main gain of a custom tool is recovering unrecorded billable time. Estimate for an attorney billing 5 000 USD/month (2026 order of magnitude).
| Lever | Monthly impact/attorney | Annual effect/attorney |
|---|---|---|
| Unrecorded time recovered (+18 %) | +900 USD | +10 800 USD |
| Admin hours saved | 6.0 h | 72 h |
| Billing cycle shortened | -12 days | Better cash flow |
| Billing errors avoided | -1.5 %/invoice | Fewer credits |
| Total revenue recovered (8 attorneys) | +7 200 USD/month | +86 400 USD/year |
Mini case study
David, managing partner at an 8-attorney firm in Brickell, Miami, found his associates were failing to log about 18 % of their time. Current billed revenue: 480 000 USD/year (8 x 5 000 x 12). He invests 80 000 USD in a custom tool (case management, mobile timesheet, hourly billing, secure vault). Recovery: +86 400 USD/year of finally-billed time, plus 6 h/month/attorney. The outlay is amortized in about 16 months on recovered billings (near 28 months on raw software TCO), including 12 000 USD/year maintenance.
FAQ
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How much does custom law firm case management software cost in Miami?
From 50 000 to 110 000 USD in 2026 depending on scope (cases, timesheet, hourly billing, secure vault). Annual maintenance is around 15 % of the build.
What is the rollout timeline?
Plan 4 to 6 months from scoping to production. Case management and timesheet ship first to secure time capture.
Is a custom build compliant with data-protection rules?
Yes: encrypted vault, access control and audit logging, privacy by design. Client confidentiality is handled from the start.
Why not stay on a vertical SaaS?
It remains fine for a small firm. From 6-8 attorneys, recovering unbilled time (+18 %) makes custom clearly more profitable.
Can existing matters be migrated?
Yes, via a planned data migration (matters, clients, billing history) with quality control before go-live.
Let's scope your project. Tell us your headcount, current tool and estimated unrecorded-time rate, and we will price a cases + timesheet + billing scope with an indicative 50 000-110 000 USD 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.
