What are the current entry visa rules for US citizens traveling to Thailand from Europe?

The going rate is visa exempt twice a year from what I have seen personally. Just fill out tdac 3 days before arrival. The dates of entering may not be an issue but rule of thumb is "its not an issue till it is"

It all depends on the flight staff and IO you get when you check in

From september 24 to january 25. It seems you have done visa run...though it should not give you any problem

Heather, don’t worry, you’ll be fine, if you’re worried just bring $500 with you, and if asked, just tell them the truth. Thailand does actually want tourists. 😀👍

As explained in earlier comments you *could* be asked for these three proofs, although highly unlikely with your previous entry history.

No one here can guarantee anything as it’s up to discretion of the officer you hand your passport to.

If asked about funds it has to be in cash. 20k baht or equivalent in any major currency. A bank balance, phone app or credit card won’t suffice.

That said it’s incredibly rare to be asked. They can ask but almost certainly won’t unless you have an extensive history of back to back visa exempt or tourist visas and they think you are trying to play the system for a long term stay without any valid visa to do so.

Visa exempt entries are for 60 days on entry. You need nothing other than your passport, last boarding card and a filed TDAC done within 3 days prior to arrival.