The nulla osta, explained: proving you are free to marry in Italy

What it is, and where it comes from

Nulla osta translates as, roughly, “no impediments”. It is a declaration that you are legally free to marry: not already married, of age, no legal barrier. The comune will not proceed without one from each of you.

The part that reshapes your trip: it is issued by YOUR OWN country's embassy or consulate LOCATED IN ITALY. Not by your local register office at home, not by an Italian consulate abroad. You have to be in Italy, with an appointment, for this to happen — which is why an Italian wedding usually means arriving several working days early rather than the day before.

If you are American, it is two documents

The United States does not issue a formal certificate of no impediment, so American couples follow a two-part workaround involving two different consular systems. This is the single most common thing to get wrong, and the one most likely to be discovered too late to fix.

1. Atto notorio — before you leave — A sworn declaration that there is no legal impediment to your marriage. Obtain it from an ITALIAN consulate in the United States, ideally around four months before the wedding. It can alternatively be sworn at a court in Italy, with witnesses.
2. Nulla osta — once you are in Italy — Signed in front of a US consular officer at the US Embassy or a US consulate in Italy, whether you are single, divorced or widowed. Costs roughly $50 per person.
3. Legalisation at the Prefettura — Then, as above, before it goes to the comune.

Everyone else

The pattern differs by nationality, and this is the section to verify against your own consulate rather than to trust in the abstract:

• United Kingdom, Ireland, Australia and most of Europe — Generally a single certificate of no impediment issued through your own consular system in Italy, rather than the American two-document route. Some nationals obtain a CNI at home first; the Italian-facing document is still issued in Italy.
• Canada — Does not issue a nulla osta at all. Canadian couples go through a different procedure entirely, and it is worth establishing what that is before anything else in the file.
• Anyone previously married — Expect to produce a final divorce decree or a death certificate, translated into Italian by a court-appointed sworn translator.

A workable order of operations

1. Confirm the exact document list with your comune, in writing. First, not last.
2. Order a fresh full-length birth certificate — Italy commonly wants one issued within the last six months.
3. Americans: book the atto notorio at an Italian consulate at home, roughly four months out.
4. Arrange sworn translations into Italian by a court-appointed translator.
5. Fly out several working days early. Attend your consulate in Italy for the nulla osta.
6. Legalise it at the Prefettura.
7. Take everything to the comune, and sign the atto notorio there if your comune wants one — often expected within about 48 hours of the nulla osta.

Nothing on that list is expensive. All of it depends on offices that keep their own hours, close on Italian public holidays, and do not care about your wedding date. Start the file about three months out and treat every government estimate as optimistic.