Finland: Proposal to amend tax legislation on offshore wind power

The proposal would subject buildings and structures in the Finnish exclusive economic zone to real estate tax and extend the scope of the Income Tax Act.

The government of Finland on March 19, 2026, submitted to Parliament a proposal amending tax legislation on offshore wind power, with the changes proposed to come into effect during 2026.

The proposal would:

Subject buildings and structures located in the Finnish exclusive economic zone to real estate tax
Allocate 80% of the tax revenue to the state and 20% to eligible coastal municipalities
Modify valuation rules by reducing the replacement value of offshore wind power plants for real estate tax purposes from 75% to 35% of construction costs
Extend the scope of the Income Tax Act to the Finnish exclusive economic zone, with a phased application beginning from tax years 2026 to 2030, depending on the provision

For more information, contact a KPMG tax professional in Finland:

Jouko Tuomi | jouko.tuomi@kpmg.fi

Kaj Grüssner | kaj.grussner@kpmg.fi

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Finland: Proposal to amend tax legislation on offshore wind power

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