Business profile

Rational Oy

Rational Oy's registered office is Turku. It is a limited company. The company was established on 1990-04-04. It operates in the industry of construction of residential and non-residential buildings.

Business ID 0844821-3ValidUnclaimed company profile

Trusted core data

Public company details from the trade register.

Business ID
0844821-3
Sector
Construction of residential and non-residential buildings
Municipality
Turku
Company form
Limited company
Registration date
1990-04-04
Business ID registration date
1991-06-06
Business status
Valid
Profile ownership
Unclaimed company profile

Contact and location summary

Visiting address: Sibeliuksenkatu 5 B 9, 20100, Turku

About Rational Oy

Financial position and key figures for the company.

Rational Oy's location municipality is Turku. It is a limited company. The company was established on 1990-04-04. It operates in the industry of construction of residential and non-residential buildings.

Registry status and identifiers

Current registry information and identifiers based on YTJ data.

YTJ statusValid
Trade RegisterRegistered
Business ID0844821-3
EU IDFIFPRO.0844821-3
MunicipalityTurku
Current registered entries
1990-04-04Registered in Patent and Registration Office (Trade Register)
1991-06-06Registered in Tax Administration (Tax Administration)
2006-02-17Registered in Tax Administration (Prepayment Register)

Risk certificate

An open-data based company stability and risk signal.

BUSINESS.fi

BUSINESS.fi Luottoluokitus

Profile-specific risk signal based on open data

Automatic gradeNot a credit decision
B2
SatisfactoryRational Oy
Model score58/100
Assessment confidenceMedium
Evidence qualityRegistry and statistical evidenceRegistry and statistics based
Supporting factors
  • Active registered status
  • Long registry continuity
Risk factors to note
  • Elevated industry distress context
  • Sufficient structured financial metrics are not available
Automatic model gradeB2
Automatic model snapshot2026-09-17
Automatic model versionopen-risk-grade-v0.14
Registry and statistics based

The grade uses registry, industry, and regional signals because sufficient source-backed financial metrics are not available for a Tier 1 assessment.

Verify assessment

Risk context

When sufficient source-backed financial metrics are not available for a Tier 1 assessment, BUSINESS.fi shows registry, industry, and regional context.

Industry riskhigh
25/100

Industry context is high based on normalized open statistical inputs.

Age and continuityVakiintunut
90/100

The company has about 36 years of registry continuity.

Registry and status signalsSeurattava
74/100

Registry history, filing recency, and active register markings are still limited or mixed.

Events & news

Verified events and sourced external company news in one timeline.

Risk grade updatedRisk gradeEvidence verified
17 Sept 2026 · BUSINESS.fi / Opterom LuottoluokitusAutomatic grade B2.

Registry timeline

Trade register notifications shown on a timeline.

15 register eventsLatest event: 2026-04-30

Profile source and ownership

Profile based on public registry data
BUSINESS.fi has created this profile from public company information. Source data updated 2025-12-31.

This company profile has not been claimed yet

Rational Oy shows public core facts. A company representative can claim the profile, update public information, and access owner tools.