Same thing here in Norway. We get the tax return forms pre-filled and if we want to make changes it can be done on a government web page easily. Capital gains,

Same thing here in Norway. We get the tax return forms pre-filled and if we want to make changes it can be done on a government web page easily. Capital gains, most deductions and assets/loans are also registered automatically. If you have no changes then you don't need to do anything at all.