As the title says, I am going to Japan on a student visa and in my home country I am self-employed. The problem is that my main client and with whom I would maintain the working relationship does not want to pay services to a company/sole proprietor in Japan (even having to pay in Euros and me doing the conversion to yen and having record of the value of the currency), then I do not know if it is possible to maintain my status as self-employed in Spain and inform Japan of the income received for the work done and pay the corresponding taxes in Japan and ask Spain for the refund when it is time to do the tax return.
I know that the hours I can work are 28 hours per week (except for vacation periods), but this is not a problem since with this client I have never worked more than 30 hours per week and it is easy to put the limit in 28 hours as required by immigration, and I can also have a total record of the hours worked (I invoice services by hours, so it is easy to know the hours worked).
Finally, if this is not possible the only option I see is to find a part time job in Japan as any normal student, but here I have a doubt: as far as I understand, all the money of my savings that I send/use in Japan can be taxed. Is this so? My intention is to use between 2 to 3 million per year of my savings, would I have to declare these remittances + the work done in Japan or is there any exception in this case?
Thanks in advance
by Luffyndoso