Hi, I’m still at the stage where I’m waiting to receive a “tax voucher” from Nordnet. The price is €90, and I requested it on May 27th, but there was some email back-and-forth with them about it in between. Let’s hope it arrives soon..
The form itself is already filled out, so as soon as I get the voucher, I will send the form to the Finnish Tax Administration (Verohallinto) to be stamped before submitting it to Switzerland.
So, this is clearly a months-long exercise, and it’s worth considering whether to claim taxes for several years at once. But I wanted to test this process through now. I will update this thread as things progress.