Heterogeneity in Effective Tax Rate Trends: Evidence from Finnish Corporate Tax Returns

Mikko Vanhala and Marika Viertola

No 174, Working Papers from VATT Institute for Economic Research

Abstract: In this paper, we describe the evolution of effective tax rates (ETR) of Finnish corporate groups and firms over time. Using detailed corporate tax return data from 2000-2015, we document a decreasing time trend in effective tax rates, particularly for Finnish-owned multinational enterprises. We do not observe a significant decreasing trend for domestic firms, consistent with a broad tax base and limited means of tax avoidance. Complementing our results with unconditional quantile regression, we also observe heterogeneity in the time trend across the ETR distribution. Finally, we link multinational enterprises to their foreign subsidiaries and find that multinationals with tax haven subsidiaries report zero taxable profits more often than non-haven affiliated ones. Our results show that the financial crisis had a lasting legacy on Finnish firms, creating large loss carry-forwards that were deduced in the following years.

Keywords: effective tax rate; tax avoidance; corporate taxation; Business taxation and regulation; H25; H26; fi=Verotus|sv=Beskattning|en=Taxation| (search for similar items in EconPapers)
Date: 2025
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