Planproof Oy is a limited company based in Kouvola, registered in 2017. Its taxable income in 2024 was 548 t€ and its income taxes 111 t€. Public buyers bought 6 500 € from it in 2025–2026; the largest buyer is Ilmatieteen laitos (Liikenne- ja viestintäministeriön hallinnonala).
Taxes
Measured by taxable income, Planproof Oy is in the top 10 % of the industry class electrical engineering design and technical consultancy (333 companies with taxable income; median 26 t€, 21 times the median).
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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