So I got my Italian passport three years ago (and profuse thanks again to all the people on the board who helped me), and I paid the fee and the tax for a year, and then I took a trip to Italy and used my new passport and it was very cool.
Now a few years have gone by and I've saved up for a trip to Ireland. I want to use my Italian passport again (just for the coolness). But I can't figure out how the tax works. Do I need to go to the consulate and pay the tax for this year? Or do I have to pay back taxes for the years I've missed? Or do I pay it at all -- will the Irish know or care if an Italian tax is paid?
The money isn't the issue -- it's the incredible hassle of getting to the Houston consulate to have the passport stamped, or whatever it is they do to it.
The tax stamp is only required when you use your Italian passport to exit Italy when you are not connecting through a Schengen country. To illustrate if you are in Italy and have a flight from Rome to NY you need a valid tax stamp. If your flight is from Rome to Paris connecting to NY you do not need a tax stamp. Your Italian passport is valid for travel to and from Ireland. Tax stamps can be purchased at tobacco stores throughout Italy, so there is no need to get one before departing on a trip to Italy.