Quote from @Joaquin Camarasa:
I am originally from Valencia, Spain. I have lived in the US for about 10 years.
I seriously looked into purchasing a few years back in Valencia but decided ultimately the US had more potential. As far as I know, your assumptions about the tax implications are correct for non residents, it was one of the main factors that stopped the idea of investing in Spain for me. I know I will be back eventually but if I remain in the US for many more years the tax implications are a bit scary.
I am unsure if I could purchase a property through an LLC/SL based in Spain and what would be the taxation using this system. Sharing this idea in case others can comment on it.
Hi @Joaquin Camarasa, hope everything is fine.
Investing with a vehicle like a Spanish SL (equivalent of an LLC in the US) would be interesting to research as from that moment it doesn't matter if you are a US citizen or living still in the US. You will be able to buy from that company just like any other company in Spain.
Keep in mind that when wanting to do this with a mortgage banks first want to see substance and at least one yearly balance statement. So this requires some upfront planning. Without a mortgage, you are good to go from the beginning. As a company, the first two years when making a profit the company tax is 15% and from the third year onwards this becomes 25%.