Once you are tax resident in Italy, Italy taxes your worldwide income: salary, dividends, interest, rents, capital gains, pensions, business profits โ wherever in the world they arise. It also applies annual charges on assets held abroad and requires you to report them.
That single sentence is what people underestimate. It does not matter that the money never touches Italy, that it is already taxed elsewhere, or that it sits in a structure that was invisible where you lived before. Residence attaches, and the whole balance sheet comes with it.
Which is precisely why Italy has built four different ways out of the default. They are not loopholes. They are deliberate policy, designed to attract different kinds of people โ and choosing the wrong one, or discovering them too late, is where the money is lost.