Guide · Sweden · Bolagsverket

What is Bolagsverket (the Swedish Companies Registration Office)?

Bolagsverket is the register behind Swedish company records. Here is how the organisationsnummer works, what a Swedish record holds, who supplies the activity code, and what an API can serve from it.

Läs på svenska (this guide in Swedish): Vad är Bolagsverket?

The short version

Bolagsverket is the Swedish Companies Registration Office, and its register is where the Swedish company records Prometiam serves come from. Every Swedish legal entity in it carries an organisationsnummer: ten digits, written NNNNNN-NNNN, with a Luhn check digit and a third digit of 2 or higher, such as 556012-5790 for Aktiebolaget Volvo.

The activity code on a record does not come from Bolagsverket. It is supplied by Statistics Sweden (SCB), in the SNI 2025 classification.

Who supplies what

The organisationsnummer

An organisationsnummer is written NNNNNN-NNNN: six digits, a hyphen and four digits, for example 556012-5790. The hyphen is optional when you type or send it. The last digit is a Luhn check digit over all ten digits, so a mistyped number can be rejected offline, before you spend a lookup: try it in the identifier validator.

The third digit is always 2 or higher. A personal identity number (personnummer) has a third digit of 0 or 1, so a company number can never be mistaken for a person's, and a number that has the shape of a personnummer is refused as not being an organisationsnummer.

The EU VAT number of a Swedish company is SE, the same ten digits and 01: 556012-5790 becomes SE556012579001. One identifier does two jobs, the register key and the base of the VAT number, so store it with the hyphen, the way the register writes it, and derive the VAT form. Whether a VAT number is registered and active is a separate question that only VIES answers; the VIES validation guide covers it.

What a Swedish record holds

What Prometiam serves for Sweden

Company records from the Swedish Companies Registration Office (Bolagsverket): legal name, legal form, status, registered address, activity code and dates; with register-change events and monitoring, but no officers and no registry-compliance signal (corporate insolvency notices are linked by organisationsnummer), and sole traders (enskild näringsverksamhet) are never served.

In plain terms: you can resolve an organisationsnummer, a Swedish VAT number or a company name into the record and see its status. You cannot get board members, signatories or beneficial owners for Sweden from this API. Annual accounts as filed (digitally filed iXBRL accounts only) are served from the Scale plan. Register-change events and monitoring are available, and Sweden's corporate insolvency notices are linked by organisationsnummer. The register's own bankruptcy, restructuring, administration and liquidation states are in the company's status. Sole traders are identified by a personal identity number, so a search for one returns nothing even though the business exists. Sweden is updated weekly.

Querying Swedish companies from an API

The same call as every other live country, with country=SE:

# by organisationsnummer (the hyphen is optional; the check digit is verified server-side)
curl -H "Authorization: Bearer rk_live_..." \
  "https://api.prometiam.com/functions/v1/risk-api/companies/search?company_number=556012-5790&country=SE"

# by the VAT number (SE, the ten digits and 01)
curl -H "Authorization: Bearer rk_live_..." \
  "https://api.prometiam.com/functions/v1/risk-api/companies/search?vat=SE556012579001&country=SE"

# by name, for a type-ahead field
curl -H "Authorization: Bearer rk_live_..." \
  "https://api.prometiam.com/functions/v1/risk-api/companies/search?name=volvo&country=SE"

An organisationsnummer whose check digit does not match, or whose third digit is below 2, is answered with a 400 validation error that says the number is not a valid organisationsnummer, so a typo never looks like a missing company. The free organisationsnummer lookup runs the same call with a shared key (there is also a Swedish-language organisationsnummer search), and the Sweden company data API page walks through validation and autocomplete.

Swedish insolvency

Sweden is one of the sixteen insolvency markets (FR, DE, GB, AT, CH, NO, FI, US, NL, DK, HR, SE, ES, LV, EE, SG), corporate only. The notices come from Bolagsverket's procedure data (konkurs, företagsrekonstruktion, ackordsförhandling), updated weekly, with no court, case number or source link; proceedings that ended before collection are not included. ?include=insolvency on a Swedish company record returns the notices linked by organisationsnummer. The register's own bankruptcy, restructuring, administration and liquidation states also appear on the company record in status.

FAQ

How do I look up a Swedish company at Bolagsverket?
Bolagsverket runs the register and its own website for company information. To find or check an organisationsnummer for free, search by company name or number in the organisationsnummer lookup (not an official source), or call GET /companies/search?country=SE through the API.

What is Bolagsverket?
The Swedish Companies Registration Office. Its register is the source of the Swedish company records Prometiam serves.

What is an organisationsnummer?
The Swedish organisation number: ten digits written NNNNNN-NNNN, with a Luhn check digit over all ten digits and a third digit of 2 or higher, for example 556012-5790.

Is the organisationsnummer the same as the Swedish VAT number?
It is the basis of it: the VAT number is SE, the ten digits and 01. Whether the number is VAT-registered and active only VIES can answer.

Does Prometiam serve Swedish directors or company events?
Company events yes, directors no. Swedish records are company-level: legal name, legal form, status, registered address, activity code and dates. There are no officers and no registry-compliance signal for Sweden. Register-change events (name, status, legal form and registered address; dated when the change first appears in the register data, none before 2026-09-30) and monitoring are available.

Does Prometiam have Swedish insolvency notices?
Yes. Sweden is one of the sixteen insolvency markets (FR, DE, GB, AT, CH, NO, FI, US, NL, DK, HR, SE, ES, LV, EE, SG), and insolvency notices are corporate only. The notices come from Bolagsverket's procedure data (konkurs, företagsrekonstruktion, ackordsförhandling), updated weekly, with no court, case number or source link; proceedings that ended before collection are not included. They are linked by organisationsnummer. The register's own bankruptcy, restructuring, administration and liquidation states also appear in the company's status.

Are Swedish sole traders included?
No. They are identified by a personal identity number and are never served, so a search for one returns nothing even though the business exists.

Official sources and related guides

Official sources: Bolagsverket · Statistics Sweden (SCB). Contains data from Bolagsverket (the Swedish Companies Registration Office) and Statistics Sweden (SCB).

• Vad är Bolagsverket? (på svenska)
• Sweden company data API — lookup and validation
• Organisationsnummer lookup (free tool)
• Roaring alternative — Swedish company data API compared
• What is the Finnish Trade Register? (Finland)
• What is Brønnøysundregistrene? (Norway)