Legal case management software: custom vs off-the-shelf in Berlin 2026

The verdict in three sentences

In 2026, a vendor solution for a law firm is cheaper in year one, but custom development becomes more cost-effective as soon as the firm passes 8 to 10 active users. The deciding factor is 3-year total cost, where a vendor's per-user subscription can exceed the price of an owned tool. For a Berlin firm of 12 lawyers, the cumulative gap reaches 19,000 to 27,000 EUR in favour of custom.

Custom vs vendor: the direct comparison

The two models answer opposite logics. The vendor pools costs and delivers fast; custom fits your processes and belongs to you. Here is the line-by-line comparison.

The line that changes everything is the per-user subscription. At 75 EUR/month for 12 lawyers, a vendor bills 10,800 EUR/year, i.e. 32,400 EUR over 3 years, excluding setup.

3-year total cost, the only metric that matters

Comparing entry prices is misleading. What weighs is accumulation over the tool's lifetime. Take a 12-user firm and project both scenarios.

At 12 users, the vendor stays slightly cheaper over 3 years, but the gap flips at 5 years since custom no longer has setup to amortise. At 18 users, the vendor rises to 48,600 EUR of subscription over 3 years and custom wins clearly. The tipping point sits around 14 to 16 users.

Mini case study

Mr Weber, partner of a 14-lawyer Berlin firm specialised in business law, is hesitating. The vendor he is considering costs 78 EUR/user/month, i.e. 13,104 EUR/year, plus 6,500 EUR of configuration. Over 5 years: 6,500 + 65,520 = 72,020 EUR.

Kolonell's custom quote is 42,000 EUR plus 7,000 EUR/year of maintenance and hosting. Over 5 years: 42,000 + 35,000 = 77,000 EUR. Both trajectories converge, but custom bundles a conflict-of-interest module and time-based billing that the vendor charges as add-ons. Including those on the vendor side (+ 14,000 EUR), custom becomes 9,000 EUR cheaper over 5 years while remaining the firm's property.

FAQ

From how many lawyers does custom become cost-effective?

The tipping point sits between 14 and 16 users over a 5-year horizon. Below that, the vendor is often cheaper, except for very specific needs such as fine-grained conflict-of-interest management.

How much does custom law firm software cost in 2026?

Budget 28,000 to 55,000 EUR depending on modules (case management, time billing, hearing calendar, client portal, digital vault). Maintenance adds 4,000 to 12,000 EUR/year.

Is a vertical vendor faster to deploy?

Yes, 2 to 6 weeks versus 10 to 18 weeks for custom. But process fit stays limited and you remain dependent on the vendor roadmap for any evolution.

What happens if I want to switch tools later?

With custom, you own the code and your data, reversibility is total. With a vendor, check the export format: some migrations cost 4,000 to 10,000 EUR of data recovery.

Is case confidentiality better guaranteed with custom?

You control hosting (often in the EU) and access. Encryption at rest and case-level isolation add 3,000 to 6,000 EUR but meet professional confidentiality requirements.

Let's scope your project. Tell us the number of lawyers, your priority modules and your budget horizon. We compare vendor and custom with figures for you. Detailed quote within 48 h. WhatsApp +221 77 596 93 33.