The verdict in three sentences
A custom legal DMS costs between 30 000 and 85 000 EUR in 2026 depending on full-text search, version control and legal-archiving depth. The value lies not in storage but in the ability to find the right document in seconds and prove its integrity. A reliable document core deploys in 8 to 16 weeks and durably safeguards professional secrecy.
What sets a legal DMS apart from a plain drive
A shared folder is not enough: you need full-text indexing (search inside scanned PDFs), fine-grained per-matter permissions, version control with traceability, and an e-vault guaranteeing integrity and evidential value. Add retention and legal-archiving rules, specific to each document type, which set the duration and mode of preservation.
Legal-archiving requirements and DMS cost (2026 order of magnitude)
| Requirement | Scope | Cost |
|---|---|---|
| Indexing & full-text search | OCR, content search, filters | 6 000 - 14 000 EUR |
| Per-matter permissions & confidentiality | Fine access rights, partitioning | 5 000 - 11 000 EUR |
| Version control | History, comparison, restore | 4 000 - 9 000 EUR |
| E-vault / evidential value | Timestamp, hash, integrity | 5 000 - 13 000 EUR |
| Retention & legal archiving | Type-based durations, controlled purge | 4 000 - 10 000 EUR |
| Audit log & compliance | Full access traceability | 3 000 - 7 000 EUR |
| Historical document migration | Migration, reclassification | 5 000 - 12 000 EUR |
A core of Indexing + Permissions + Versions + Audit lands around 22 000 to 38 000 EUR, with the e-vault and migration added on top.
Recurring costs and retention durations
| Item / duration | 2026 order of magnitude |
|---|---|
| Secure hosting + backups | 200 - 600 EUR/month |
| E-vault / qualified timestamp | 0.10 - 1 EUR/sealed document |
| Maintenance & evolutions | 12-18 % of budget/year |
| Matter retention (indicative) | 5 to 10 years by type |
Need a professional website?
Kolonell builds websites that attract clients, optimized for the Sénégalese market. Free quote in 2 minutes.
Mini case study
Mr. Fall runs an 11-lawyer firm in Lyon with over 40 000 documents accumulated across ten years. Finding an old document could take 20 to 40 minutes. He invests 34 000 EUR in a Full-text indexing + Permissions + Versions + Audit DMS, with historical migration. At 5 months, retrieving a document falls under a minute in the vast majority of cases. Across about 15 long searches a day per staff group, the firm estimates recovering more than 3 hours daily, the equivalent of tens of thousands of euros of useful time over the year, plus a lower risk of losing a document.
FAQ
Does full-text search work on scanned PDFs? Yes, thanks to indexed OCR, scanned content becomes searchable; 2026 recognition rates exceed 90 % on decent scans.
How is a document's evidential value guaranteed? The e-vault applies timestamping, hashing and sealing, ensuring integrity and enforceable evidential value.
Can we set different retention durations? Yes, retention rules are configured per document type, with controlled purge and an audit log tracing every deletion.
Can we migrate our existing history? Yes, migration covers transfer, reclassification and indexing; budget 5 000 to 12 000 EUR depending on volume and initial disorder.
Does data stay confidential? Encryption, fine per-matter rights, partitioning and optional sovereign hosting protect professional secrecy.
Let's scope your project. Share your document volume, archiving requirements and migration scope, and we'll price a secure, amortizable DMS. 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.
