Insinööritoimisto Haikonen Oy is a limited company based in Sipoo, registered in 1984. Its taxable income in 2024 was 3 113 € and its income taxes 623 €. Public buyers bought 9 130 € from it in 2023–2025; the largest buyer is Suomen ympäristökeskus (Ympäristöministeriön hallinnonala).
Taxes
Measured by taxable income, Insinööritoimisto Haikonen Oy is in the lower half of the industry class manufacture of other plastic products (136 companies with taxable income; median 77 t€).
Taxable income is the profit as calculated for taxation, not revenue. Public data from the Finnish Tax Administration; figures for 2025 are published in November 2026. Revenue, financial ratios and employee numbers are shown once the company has filed its financial statements digitally.
Sales to public buyers
Largest buyers
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