In Sweden most people get a prefilled paper form. You also get the sums from your employer and compare with the form. Then you either sign the paper and send it

In Sweden most people get a prefilled paper form. You also get the sums from your employer and compare with the form. Then you either sign the paper and send it back or you send an SMS with the signature code on the form. The goal is to include more and more cases into this automatic taxform every year.