How to proceed with the application?
The filing date is normally 2 May of the year after the calendar year, or the following Monday if 2 May occurs on a Saturday or Sunday. An extension of the filing date may be available upon application.
The tax authorities assess income taxes by applying the appropriate tax rates to the aggregate taxable income from the various sources. Spouses are taxed separately.
The tax assessments are issued during June-December of the same year the tax return is filed.
Source (if any): https://taxsummaries.pwc.com/sweden/individual/tax-administration