The Finnish Tax Administration has announced that because the national mask recommendation no longer applies, employees traveling between home and work on public transport are no longer able to deduct mask costs as a work-related travel expense for tax purposes from 15 April 2022. For the period of validity of the national mask recommendation, 13 August 2020 to 14 April 2022, a deduction of EUR 2 for mask costs was allowed for each day an employee has traveled by public transport between home and work using a mask they have purchased.
Source Orbitax