it might have something to do with the fact that a few years ago there was a tax amnesty for many Italians.....you declared it then or now have to explain where the money came from.
There was a lot of money that left the country when there were/are worries about the EURO collapse etc. The government is probably simply saying - if you now want to bring it back, you need to explain where it came from and that it was previously properly taxed. (When Europeans arrived in London buying houses for cash it had to come from somewhere)
IMHO - If you approach the tax authorities as simply a business and that they act in a business like manner protecting their patch then most explanations a fairly simple.
There was a lot of money that left the country when there were/are worries about the EURO collapse etc. The government is probably simply saying - if you now want to bring it back, you need to explain where it came from and that it was previously properly taxed. (When Europeans arrived in London buying houses for cash it had to come from somewhere)
IMHO - If you approach the tax authorities as simply a business and that they act in a business like manner protecting their patch then most explanations a fairly simple.