The verdict in three sentences
Over 5 years, a market solution at 70 EUR per user per month and a custom tool at 90,000 EUR cost a 35-lawyer firm almost the same, between 150,000 and 170,000 EUR. The difference is control: custom software fits your hourly billing, your approval workflows and your attorney-client privilege requirements, while standard software imposes its own screens. If your practice is general and your processes conventional, the market is enough; if your partners spend hours working around the tool, custom pays for itself.
The 5-year financial comparison
The managing partner reasons in total cost of ownership, not entry price. For 35 users, the subscription is 2,450 EUR per month, or 29,400 EUR per year. Custom requires an initial investment followed by evolutive maintenance of roughly 15% per year.
| Item (35 lawyers) | Market solution | Custom tool |
|---|---|---|
| Setup and matter migration | 3,000 EUR | Included in the 90,000 EUR |
| Annual recurring cost | 29,400 EUR | 13,500 EUR (maintenance) |
| Certified US hosting | Included | 2,400 EUR per year |
| Cumulative 5-year cost | 150,000 EUR | 169,500 EUR |
| Vendor annual price increase (3 to 5%) | + 8,000 to 13,000 EUR | None |
| Adjusted 5-year cost | 158,000 to 163,000 EUR | 169,500 EUR |
| Ownership of the code | No | Yes |
Over a 7-year horizon, the advantage clearly shifts to custom: the subscription keeps running while the tool is paid off. With 50 lawyers, breakeven arrives in year four.
The features that make the difference
Matter tracking and hourly billing are the core of the decision. A New York business law firm often bills between 250 and 600 EUR per hour (roughly 270 to 650 USD): every unrecorded hour is pure loss.
| Feature | Market solution | Custom |
|---|---|---|
| Time entry | Standard, timer | Matched to your activity codes and fixed fees |
| Hourly and fixed-fee billing | Yes, fixed templates | Per-client rules, caps, success fees |
| Conflict checks | Simple search | Automatic check when a matter is opened |
| Court e-filing integration (NYSCEF, PACER) | Depends on vendor | Dedicated connector, notification tracking |
| Document management | Generic module | Folder structure by practice area, versioning |
| Hosting | Vendor cloud, sometimes offshore | SOC 2 certified US host, encryption |
| Partner dashboards | Standard reports | Profitability by partner, client, practice area |
Privilege and hosting: non-negotiable
Attorney-client privilege and bar ethics rules require you to know exactly where data is stored, who can access it and how it is encrypted. Require US hosting with a SOC 2 certified provider, encryption at rest and in transit, two-factor authentication and access logging. Also check reversibility: at the end of the contract, you must get matters, time entries and invoices back in a usable format. Serious market solutions plan for it, but read the exit terms before signing.
Mini case study
Laura, managing partner of a 35-lawyer firm in New York, estimates each lawyer fails to record 2 hours per month for lack of a suitable tool. At an average rate of 320 EUR, that is 35 × 2 × 320 × 11 months = 246,400 EUR of unbilled fees per year. If the custom tool recovers half of those hours, the firm gains 123,200 EUR per year, more than the initial 90,000 EUR investment in the first year.
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FAQ
How much does law firm software cost in New York in 2026?
Market solutions range from 50 to 120 EUR per user per month, 70 EUR on average. A custom build for 35 lawyers costs around 90,000 EUR.
Can a custom tool connect to court e-filing systems?
Yes, through available filing interfaces and notification tracking connectors. Expect 8,000 to 15,000 EUR for this module depending on the level of automation.
How do we protect privilege in the cloud?
US hosting, AES-256 encryption, two-factor authentication and access logs kept for at least 12 months. An annual security audit costs 4,000 to 8,000 EUR.
How long does a custom build take?
Expect 5 to 7 months for a full scope covering matters, time, billing and document management. The time and billing module can ship in 10 to 12 weeks.
Can we start with a market solution and migrate later?
Yes, as long as data reversibility is written into the contract. Migrating 5 years of history costs 5,000 to 12,000 EUR.
Let's scope your project. Tell us your number of lawyers, your billing models and your current tool: we will scope the work, the budget and the timeline, 5-year comparison included. 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.
