It sounds like you applied for the 90-day non-O visa based on marriage, and they came to visit you after that. And now you've applied for the 1-year extension (not a visa, it's an extension), and so they are coming to visit you based on this brand new application. Each extension is a brand new application, you are not renewing anything, you are applying for a brand new extension.

@Alan *******

TDAC is irrelevant. But many airlines require it

@Samantha *******

you'll need to check with your airline. Immigration in Thailand almost never asks.

If you both have Italian passports then you don't need a visa. You'll be eligible for visa exempt which will give you a 60 day stamp when you enter. About a month into your trip you'll need to go to the immigration office where you are and apply for the 30-day tourism extension.

You don't need to do anything. You've already entered. The TDAC is no longer relevant.

Non immigrant visas do not require proof of onward travel out of Thailand.

If the visa application asks for travel dates, just put your intended entry date and an exit date within 90 days since it's a 90 day visa. They know this type of visa has a path to staying in Thailand long term, so it's just a paperwork routine to get it issued.

@Jason *****

as I said, you clearly don't understand the way Thailand works. Including something that's not requested is just asking for trouble. You'll confused them and likely complicated things for yourself.

Thais are taught from elementary school not to ask questions, not to question what they are told. They are given a list of things to check, and anything that deviates from that list is a problem. They have no capacity to think outside the box, to help you if something doesn't match exactly what's on their list. They are punished for making suggestions to their manager that could improve something, because then the manager looks bad.

When you have an official government process, you provide what is asked for. Nothing more, nothing less.

@Jason *****

the Thai government is not a UK employer. They do not care what agreement you have with some company. They want a criminal history certificate.

But as I said, I don't know why you're even asking about this because you likely won't need it.

You're putting the cart way ahead of the horse.

There only visa type that requires a background check is the Non-OA visa, which is not widely used.

If you ended up applying for a visa that DOES require a background check, you absolutely, 100%, will require a certificate. You expect the embassy staff to sign up and login to a portal to view your background check? Not a chance in hell of that happening.

And you also think that the company that provides background checks has never, ever had a single person ask for a certificate? I guarantee they have a way to still provide this.

Seems like you've never been to Thailand before, or never done any type of bureaucracy in Thailand. If you had, you wouldn't have asked basic questions like this. Expect nothing to be easy, everything to require reams of paper, and you to not understand why anything works (or doesn't work) the way it does.

Non-immigrant visas do not have a requirement for proof of onward travel.