What are the re-entry rules for a multiple-entry tourist visa in Thailand?

I always leave Thailand and fmy bsck next day on my metv, never hsd an issue at immigration

*** The Multi Entry Tourist Visa is valid for 6 months, to be used for an unlimited number of entries during this period. The 6-month validity begins on the day the visa is issued.

Each time you enter the country you receive a 60-day stay permit, which can be extended by 30 more days, only once, at immigration for 1900 THB.

Before the 60 days or 90 days stay permits expire, you have to leave the country, and either short by a border bounce, or longer by staying in the neighboring country for a short holiday, re-enter Thailand and activate a new 60-days stay permit

Please do not confuse this: the duration of the stay permit is not the same as the duration of the visa validity.

If you leave and re-enter as close as possible before the 6-months visa validity expires, you will receive a 60-days stay permit stamp for the last time. This brings the total possible stay to almost 8 months.

You can theoretically get another 30-days extension on immigration, which brings the total stay to almost 9 months

You can only apply for and receive the 6-month multi-entry tourist visa in the country of your residence

A 60-day single entry tourist visa, however, can be obtained at any Thai diplomatic mission around the world.

The 6-months multi entry Tourist Visa is something special.

If you apply for a visa in your country using the e-visa system, don't be surprised if the day of your departure is getting closer and you haven't been issued a visa, yet.

The visa-validity starts on the date the visa gets issued. This is a different date than the expiry date of the stay permit you get stamped in when you enter.

The Thai embassies and consulates usually try to issue the visa as close as possible to your departure date so you don’t lose too many days of the 6-months visa validity

Formally, you must justify the need for multiple entries by providing documentation of at least two entries and two onward tickets. Without this, you risk being issued only a single-entry visa with no refund of the price difference—unless the embassy happens to request additional documents.

In practice, enforcement varies: some embassies apply the rules strictly, others issue multiple-entry visas with only one ticket. Your personal experience is therefore irrelevant unless the same embassy and the same visa officer handle the next person’s application.

You will get 60 day stamp if you return the day before the visa expires with the possibility of extending for the extra 30 days. This will be given at immigration discretion.

No

Normally with a visa there is no requirement to stay outside for any amount of time. There might be some land borders that still don't want to let you back in the same day you leave as a tourist, but with a visa it should generally be fine.