Isomus Oy

OYDissolved

Y-tunnus 0585746-8Kruununhaankatu 4, 00170 HelsinkiAccounting, bookkeeping and auditing activities; tax consultancy · NACE 6920Est. 1985 · 41 years old— employees

Overview Financials People & ownership Related companies

Isomus Oy is a Finnish OY based in Helsinki, operating in the Accounting and bookkeeping activities; tax consultancy sector. Incorporated in 1985, the company reported revenue of EUR 3K in its latest annual filing.

Revenue 2025

EUR 3K

-73% vs 2024

EBITDA margin

-122.1%

+44% vs 2024

Equity ratio

—

Financial strength

Net profit 2025

EUR -4K

+46% vs 2024

Key ratios

See full ratios →

391900.0%

—

-391900.0%

EBITDA — year on year

EUR millions

Key figures

Annual report 2025

Revenue	EUR 3K	-73%
EBITDA	EUR -4K	+44%
Net profit	EUR -4K	+46%
Total assets	EUR 0	-100%
Equity	EUR 4K	-65%
Employees	—	—

Contact

Address

Kruununhaankatu 4, 00170 Helsinki

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Frequently asked questions

What is the Y-tunnus number of Isomus Oy?

Isomus Oy is registered with PRH / YTJ under Y-tunnus 0585746-8.

What is the revenue of Isomus Oy?

Isomus Oy reported revenue of EUR 3K in 2025.

Who is the CEO of Isomus Oy?

Leena Marjatta Tiihonen is Deputy Member of Isomus Oy, in role since 2012.

Who is the chairman of Isomus Oy?

Vesa Reijo Kalervo Tiihonen chairs the board of Isomus Oy, in role since 2012.

Where is Isomus Oy headquartered?

Isomus Oy's registered address is Kruununhaankatu 4.

Isomus Oy

Key ratios

EBITDA — year on year

Key figures

Company information

Contact

Frequently asked questions

More on Isomus Oy

Key ratios

EBITDA — year on year

Key figures

Company information

Contact

Frequently asked questions

More on Isomus Oy