Mastos Oy is a limited company based in Sipoo, registered in 2022. Its taxable income in 2024 was 2 026 € and its income taxes 405 €. Public buyers bought 4 198 € from it in 2022–2024; the largest buyer is Työllisyys, kehittämis- ja hallintokeskus (Työ- ja elinkeinoministeriön hallinnonala).
Taxes
Measured by taxable income, Mastos Oy is in the lower half of the industry class computer programming activities (3157 companies with taxable income; median 27 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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