Hi John
We asked our solicitor which taxes we needed to pay when we picked up our deeds last week.
He told us that we have 2 taxes to pay
non residence tax - which can be paid through the solictor for a fee. I can't remember whether he said it needed to be paid by April or he would send us the bill in April.
abi tax - if we haven't had a bill at our Spanish address by August (1 year after completion) we need to chase it up with Polaris. He recommends after the first bill you arrange to pay subsequent bills by filling in the direct debit.
We are not renting out at the moment so don't know what taxes are linked to that.
Hope this helps