The verdict in three sentences
For a 30-lawyer firm in New York, the real leak is not the billing rate but unrecorded time: about 8% of fees lost, roughly 240,000 USD a year on 3 million USD of revenue. Vendor software at 70 to 140 USD per user per month is enough if your processes are standard, but a custom build at 45,000 to 85,000 USD pays off once billing mixes flat fees, contingency fees, subscriptions and disbursement recovery. Either way, success depends on time capture from Outlook and mobile in under 10 seconds, otherwise lawyers will not use it.
Where a New York firm's 8% goes
Time is rarely lost on big matters. It disappears in 6-minute calls, late-night email reviews and exchanges with opposing counsel that never get logged. Time reconstructed on Friday afternoon misses 15 to 20% of the time actually spent.
| Source of loss | Share of fees lost | Annual estimate (30 lawyers, 3 M USD revenue) |
|---|---|---|
| Short calls and emails not logged | 3.5% | 105,000 USD |
| End-of-week time reconstruction | 2% | 60,000 USD |
| Disbursements not rebilled | 1% | 30,000 USD |
| Flat-fee overruns not flagged | 1% | 30,000 USD |
| Late invoicing and written-off receivables | 0.5% | 15,000 USD |
| Total | 8% | 240,000 USD |
These are 2026 estimates based on audits of similar-sized firms. They show that a tool capturing time where it happens, in Outlook, Teams or a mobile app, matters more than the depth of the billing module.
Vendor or custom: 2026 cost comparison
US practice management vendors cover the core well: timers, client records, conflict checks, LEDES invoices and trust accounting. Custom software is justified when the firm has atypical fee arrangements, several entities or needs tight integration with its document management system and accounting.
| Criterion | Vendor software (SaaS) | Custom build |
|---|---|---|
| Upfront cost | 0 to 6,000 USD of setup | 45,000 to 85,000 USD |
| Recurring cost | 70 to 140 USD per user per month, i.e. 25,200 to 50,400 USD a year for 30 lawyers | Hosting and maintenance 7,000 to 14,000 USD a year |
| 5-year cost (30 users) | 126,000 to 252,000 USD | 80,000 to 155,000 USD |
| Time to go live | 4 to 8 weeks | 4 months |
| Capture from Outlook and mobile | Depends on vendor, often a paid add-on | Designed around your habits |
| Flat fees, contingency, legal subscriptions | Standard templates | Your firm's own rules |
| Data and code ownership | Vendor contract, export sometimes limited | Firm owns everything |
| Roadmap | Vendor's priorities | Your priorities |
Above 25 users, custom software is usually cheaper over five years. Below 15 lawyers, a well-chosen vendor remains almost always the better option.
Scope of a 4-month custom project
A realistic project splits into four phases. Month one maps fee arrangements and delivers time capture: an Outlook add-in suggesting an entry from each sent email, a mobile app with timer and dictation, automatic matter assignment by reference number. Month two covers valuation: rates per lawyer and client, flat-fee caps with an alert at 80%, disbursements. Month three delivers hourly or flat-fee billing, pre-bills approved by the partner, accounting export and collections reminders. Month four handles data migration, matter profitability dashboards and training.
| Phase | Content | Indicative budget |
|---|---|---|
| Time capture | Outlook add-in, mobile app, timer | 14,000 to 23,000 USD |
| Valuation | Rates, flat fees, overrun alerts, disbursements | 9,000 to 16,000 USD |
| Billing | Pre-bills, partner approval, LEDES and accounting export, reminders | 13,000 to 27,000 USD |
| Reporting and migration | Dashboards, data migration, training | 9,000 to 19,000 USD |
| Total | 4 months | 45,000 to 85,000 USD |
Attorney-client privilege and ABA guidance on cloud security require encryption at rest, per-matter access rights and full access logs.
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Mini case study
Claire, director of administration at a 30-lawyer corporate firm in Midtown Manhattan, compares two options. The shortlisted vendor charges 110 USD per user per month, i.e. 39,600 USD a year and 198,000 USD over five years. The custom project is quoted at 66,000 USD plus 10,000 USD of annual maintenance, i.e. 116,000 USD over five years. She picks custom, mainly for monthly legal subscriptions the vendor handled poorly. If the firm recovers only half of the 8% lost, 120,000 USD of fees a year, the initial investment pays back in under 7 months.
FAQ
How much does law firm time tracking software cost in 2026?
Vendors charge between 70 and 140 USD per user per month. A custom build costs 45,000 to 85,000 USD, plus 7,000 to 14,000 USD of annual maintenance.
Will lawyers actually log their time?
Yes, if logging takes under 10 seconds and happens where they work, in Outlook or on mobile. Firms moving from weekly to real-time entry often recover 10 to 15% more billable time.
Is custom software compatible with attorney-client privilege?
Yes, with encrypted hosting, per-matter permissions and audit logs. These requirements are built in from day one for an extra 2,000 to 5,000 USD at most.
Can we migrate history from our current system?
In most cases, yes: clients, matters, time entries and invoices from the last three to five years. Budget 3,500 to 7,000 USD depending on export quality.
How long until we are live?
Four months for the full scope, with usable time capture by the end of month one. A vendor deploys in 4 to 8 weeks.
Let's scope your project. Send us your headcount, billing models and current tool, and we will price the scope, budget and 4-month 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.
