Koulutus- ja konsultointipalvelut Heikki Happonen Oy is a limited company based in Joensuu, registered in 2019. Public buyers bought 2 379 € from it in 2023–2023; the largest buyer is Etelä-Suomen aluehallintovirasto (Valtiovarainministeriön hallinnonala).
In business7 yrsregistered 14.10.2019
Sales to public buyers2 379 €2023–2023
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Taxes
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.