Siltainsinöörit TH Oy is a limited company based in Lahti, registered in 1985. Its taxable income in 2024 was 73 t€ and its income taxes 15 t€. Public buyers bought 1,2 M€ from it in 2022–2026; the largest buyer is Työllisyys, kehittämis- ja hallintokeskus (Työ- ja elinkeinoministeriön hallinnonala).
Taxes
Measured by taxable income, Siltainsinöörit TH Oy is in the upper half of the industry class civil engineering design and technical consultancy (91 companies with taxable income; median 35 t€, 2,1 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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