Estonian Company Data: 366K Companies and Atlas Search

JARS.LT now provides access to the Estonian Business Registry (Äriregister) — over 366,000 companies and 1.4 million financial reports. Search across two Baltic countries from a single platform with instant results.

What's Included

Companies — 366,000+

Estonian company records include:

• Registry code (ariregistri kood) — unique company identifier
• Company name and legal form (OÜ, AS, FIE, etc.)
• Registered address with municipality and postal code
• Registration date and current status
• VAT number (KMKR) where registered
• Beneficiaries — beneficial owners with country of residence (REST API only, see below)

Financial Reports — 1.4 Million

Annual financial statements filed with the Estonian Centre of Registers:

• Profit & Loss — revenue, cost of goods sold, operating profit, net profit
• Balance sheet — assets, equity, liabilities
• Employee count reported per year

Data covers reporting periods from 1995 to 2024, with most companies having 5–15 years of history.

Cross-Country Search

The search now supports a country toggle — switch between Lithuania and Estonia with a single click. Estonian data is also available at jars.ee — a dedicated domain where Estonian search is the default.

The API accepts a country parameter (lt or ee). When using api.jars.ee, Estonian search is the default:

# Search Estonian companies (via jars.ee — country=ee by default)
curl -H "x-api-key: YOUR_KEY" \
  "https://api.jars.ee/api/v1/companies/search?q=Bolt"

# Search Lithuanian companies (via jars.lt — country=lt by default)
curl -H "x-api-key: YOUR_KEY" \
  "https://jars.lt/api/v1/companies/search?q=Bolt"

# Explicit country parameter works on both domains
curl -H "x-api-key: YOUR_KEY" \
  "https://jars.lt/api/v1/companies/search?q=Bolt&country=ee"

Estonian company detail pages and financial data are also available:

# Get Estonian company by registry code
curl -H "x-api-key: YOUR_KEY" \
  "https://jars.lt/api/v1/companies/14532901?country=ee"

# Get Estonian company financials
curl -H "x-api-key: YOUR_KEY" \
  "https://jars.lt/api/v1/companies/14532901/financials?country=ee"

Beneficial Owners via the API

Estonian company records include beneficial owners — name, country of residence and type of control. This data is served through the REST API to authenticated API keys, on the /beneficiaries endpoint documented in the API reference.

It is not part of the website. Company pages do not display beneficial owners, and search does not match queries against their names: on jars.ee and jars.lt, company search covers company names and registry codes only.

Exact company-name matches are ranked above fuzzy ones, so the most relevant results appear first.

Atlas Search: Fast Diacritic-Insensitive Search

Both Lithuanian and Estonian search now use MongoDB Atlas Search — a Lucene-based full-text search engine built into MongoDB Atlas. This replaced the previous regex-based approach.

Diacritic Folding

Baltic languages use many diacritical marks: Lithuanian has ą, č, ę, ė, į, š, ų, ū, ž, while Estonian uses ä, ö, ü, õ, š, ž. Atlas Search with icuFolding handles this automatically:

Fuzzy Matching

Search tolerates up to 1 character difference (insertion, deletion, or substitution):

Performance: Before and After

We compared the old regex-based search (still running on the production server) with the new Atlas Search (development server). The results show improvement both in speed and search quality.

Response time comparison (Lithuanian search):

Times adjusted to exclude network latency for fair comparison.

Search quality improvement:

The old search had issues with result counting for diacritic queries — siauliu returned total=0 despite finding results. Atlas Search fixes this and returns accurate counts.

Estonian search (new, Atlas Search only):

Estonian search runs on the same Atlas Search stack, with the same diacritic folding and fuzzy matching shown above — Jarvekula finds Järveküla OÜ, Balt finds Bolt Operations. Queries match company names and registry codes.

Data Specifics

Estonian vs Lithuanian Data

Estonian Legal Forms

Common legal forms you'll encounter in Estonian data:

• OÜ (Osaühing) — Private limited company, similar to Lithuanian UAB
• AS (Aktsiaselts) — Public limited company, similar to AB
• FIE (Füüsilisest isikust ettevõtja) — Sole proprietor, similar to IĮ
• TÜ (Tulundusühistu) — Cooperative
• MTÜ (Mittetulundusühing) — Non-profit organization

Getting Started

Estonian data is available on all plans, including the free tier. You can:

• Visit jars.ee — Estonian search is the default
• Use the search page on jars.lt and switch to the Estonia tab
• Use the API at api.jars.ee (Estonian default) or api.jars.lt with country=ee