v3.26.1
Income tax (Details) - SEK (kr)
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Notes and other explanatory information [abstract]    
Tax expense for the year kr (4,604) kr (1,053)
Total current tax expense (4,604) (1,053)
Deferred tax relating to temporary differences 5,639 (4,278)
Total deferred tax income 5,639 (4,278)
Total income tax expense kr 1,034 kr (5,331)