Moving to the USA with your cat: what America and your state require

Good news first: for a cat, the federal government asks surprisingly little at the US border. There's no form like there is for dogs, no minimum age and no microchip requirement. The rules that really matter live elsewhere: in the law of the state you'll be living in, and in your airline's conditions. Moving to Texas takes different paperwork than moving to New York. And if you later fly back to Europe with your cat, you need different papers again. Here's what applies, the order to tackle it in and where people typically trip up, whichever European country your cat is coming from.

1What the federal government requires: a cat that looks healthy

At the border, pets fall under the CDC, the federal health agency. Its rule for cats is short: the cat must appear healthy on arrival. Cats may be examined at the port of entry and can be refused entry if they show signs of a disease that can spread to people. If your cat seems ill, the CDC can require a further examination by a licensed veterinarian before it may enter, at your expense (CDC, Bringing an Animal into the U.S.).

The CDC doesn't require proof of rabies vaccination for cats. It does recommend the vaccination for all cats, though, and points out that your destination may have additional requirements. This is exactly where a lot of planning falls short: entering the USA is one thing, entering your state is another. Read only the CDC's page and you may end up in Texas with an unvaccinated cat, where vaccination is mandatory.

A second federal rule will matter to you later. If your cat leaves the USA, it has to meet all the entry requirements again when it comes back, even if it already lived in the USA before (CDC Yellow Book, Traveling with Pets). So if you visit family back home with your cat in the summer, always plan for both directions.

And finally, the airline. The CDC itself notes that many airlines have their own requirements, such as a health certificate and proof of vaccination. Whether your cat flies in the cabin or in the hold, how big the carrier can be and how many animals are allowed per flight is entirely up to the airline. Ask before you book, not after.

2What your state requires

The table covers Texas, Florida, California and New York, plus Hawaii as a special case. The differences are bigger than you'd think, and they concern precisely the papers you need to prepare in Europe.

2.1Texas

Texas requires a rabies vaccination for every cat aged 12 weeks or older brought into the state, for whatever reason. As proof, a vaccination certificate or pet passport is enough, provided it shows the vaccination date, the vaccine, the booster due date, the animal's identification, your contact details and the signature of the vaccinating veterinarian. The EU pet passport usually contains this information if your vet has filled it in properly. If the first vaccination was less than 30 days ago, the cat stays at home for the rest of those 30 days. Texas does not require a health certificate (Texas Department of State Health Services; 25 TAC 169.32).

2.2Florida

In Florida, every cat aged 4 months or older must be vaccinated against rabies with a vaccine licensed by the US Department of Agriculture (USDA), administered by a licensed veterinarian. A booster is due twelve months after the first vaccination, after which the interval follows the manufacturer's guidance (Florida Statutes 828.30). For animals from abroad, the state's agriculture department refers to the USDA's rules.

2.3California

California is the most relaxed of the four: the state requires no documents for pet cats on entry. Some counties and cities do mandate rabies vaccination for cats, however, and if you move your residence to California, you should check the rules with your local animal control agency, including pet licensing (California Department of Public Health).

2.4New York

New York is the strictest of the four. Dogs and cats coming from abroad need a health certificate issued no more than 30 days before entry and, from 3 months of age, a valid rabies vaccination. The vaccine's product name and the vaccination date go on the certificate. The state explicitly does not accept the EU pet passport. If there's no suitable form in the country of origin, the details on your vet's letterhead, in English, will do (New York State Department of Agriculture and Markets).

2.5Hawaii

Hawaii is rabies-free and protects that status with the strictest rule in the country: cats that don't meet the requirements of the short program go into quarantine for up to 120 days. For the short option you need two rabies vaccinations, a passed antibody test and waiting periods of at least 30 days each; the documents must be in no later than 10 days before arrival (Hawaii Department of Agriculture and Biosecurity). This also applies to cats coming from the mainland.

3The rabies vaccination: European vaccine, American rules

Here's the pitfall hardly anyone sees coming. A vaccination given in Europe doesn't automatically count as a vaccination under the rules of the state you live in. Texas says so plainly: vets in Texas may only use USDA-licensed vaccines. For entry, the state accepts other vaccines too. But if a vaccine without USDA licensing was used, or the vaccinating vet wasn't licensed in the USA, the cat must meet Texas requirements after arrival (Texas Department of State Health Services). In practice, that means taking your European vaccination record to a local vet and finding out whether a shot with an American vaccine is needed.

Florida writes the USDA-licensed vaccine straight into law. So for a cat living in Florida, a visit to an American vet is unavoidable sooner or later. Local ordinances can also be stricter than state law, as the Texas health department points out as well.

A tip that will save you a lot of hassle later: have your cat microchipped before it's vaccinated, even though the USA doesn't require a chip. To return to the EU, the microchip must be implanted before the rabies vaccination (USDA APHIS). A vaccination given without a chip already in place doesn't count for the EU, and you're back to square one.

4Paperwork and flight: your pre-departure checklist

Your folder will look a little different depending on your destination state. For most cats coming from Europe, it should include:

• Proof of rabies vaccination, showing the vaccine, date and booster due date. For Texas, a properly kept pet passport is enough; for New York, it isn't.
• For New York, a health certificate issued no more than 30 days before entry, with the vaccine's product name and date, in English.
• A health certificate for the airline. Many airlines require one issued by a vet seven to ten days before the flight, as described by the Texas health department and the Florida Department of Agriculture. Your airline's conditions are what count.
• The microchip number, so the vaccination record and the cat match up.
• For Hawaii, the quarantine program documents, submitted no later than 10 days before arrival.

Keep the papers in your carry-on, not your checked bag. On arrival you'll want to be able to show them before your cat leaves the airport.

5Arriving at the airport

Your cat may be examined at the airport. If it looks healthy, that's usually over quickly. If it looks ill, for example because it's listless after a long flight, an examination by a licensed vet may be required before it can enter, at your expense (CDC). So a calm flight isn't just about caring for your cat; it's part of getting it into the country. Talk to your vet in good time about how to prepare your cat for the flight.

If the first vaccination is recent and you're moving to Texas, the 30-day rule applies: your cat stays at home until 30 days have passed since the shot. For an indoor cat, that changes very little. For an outdoor cat, it means staying inside for a while, which is wise after a move anyway.

6The first weeks in your new home

In the first few weeks, find a vet nearby and bring all your paperwork. The vet will confirm whether your cat is validly vaccinated under your state's law and record the next booster. In Florida, the interval after the first booster follows the manufacturer's instructions. In Texas, you should check with a local vet after the move that your cat meets the vaccination rules, because local regulations can be stricter than state law.

Ask your city or county whether a pet license is required. In California, the health department explicitly refers you to local animal control agencies, including for licenses. And think about your lease: whether pets are allowed, and on what terms, is up to your landlord, so ask before you sign. More on this in our guide Renting in the USA without a credit score.

By the way, your cat is rarely the only one who needs to settle in. What awaits you in the first weeks, from tipping to the emergency number, is covered in Living in the USA as a European, and the order of every step is in our guide Arriving in the USA.

7Back to Europe or visiting home

Sooner or later, your cat may fly back, for a summer with family or for good. EU rules apply to EU countries. The good news: because the USA is listed in Annex II of Implementing Regulation (EU) 2026/636, your cat does not need an antibody test to enter the EU from the USA.

What your cat does need is an animal health certificate following the EU model. In the USA, a USDA-accredited vet issues it and submits it electronically to the USDA, which endorses it. If you are traveling with your cat, the endorsement must take place within ten days before arrival in the EU. The microchip must be implanted before the vaccination, and after the first vaccination you wait at least 21 days, or 30 for some vaccines (USDA APHIS). The certificate is valid for ten days from issue until the check at the point of entry. For onward travel within the EU, it is valid for six months or until the vaccination expires, whichever comes first. You also need a written declaration that the trip is non-commercial.

And for the return trip to the USA, everything above applies again: your cat has to meet the entry rules as if arriving for the first time. For New York, that means another fresh health certificate no older than 30 days. And if you're also bringing a dog, it needs its own CDC form: Bringing your dog to the USA.

In short

• At the federal level, cats only need to appear healthy on arrival. The CDC does not require proof of rabies vaccination, but it does recommend the shot.
• The real rules are set by each state: Texas requires rabies vaccination from 12 weeks of age, Florida from 4 months, and New York from 3 months, plus a health certificate no older than 30 days (an EU pet passport won't do). California requires nothing for cats, though some counties do.
• A European vaccination is enough to enter Texas, but after that it must meet state rules. Plan your first appointment with a US vet right away.
• To return to Europe, you need the chip before the vaccination, a 21-day waiting period and a USDA-endorsed animal health certificate, but no titer test.

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