I'm a US citizen interested in entering Thailand in December of this year, holiday only. My plan was to get an extension after 45 days, but it seems some sites are saying the exemption is only 30 days now. True or false?

Entering Thailand for a USA citizen "visa exempt" as of "right now" it is set at 30 days... in December it may well be reset to 45 days but no one knows

The 45 day for visa exempt entry was part of the covid reaction and ended quite some time ago. 

OP, if you enter Thailand visa exempt you will receive 30 day stamp.

You can apply for an extension which is also 30days.

1900baht.

How long do you wish to visit Thailand? 

The 45 days was a temporary measure to boost tourism. On the cards for the future, though, are 90 visa exempt entries - when is unknown but it's a policy proposal from the new PM. Could be early next year or it may never happen. 

3 hours ago, Dan O said:

The 45 day for visa exempt entry was part of the covid reaction and ended quite some time ago. 

I did it in February; didn't know that it was a temporary covid thing.

You have right attitude; less you know in Thailand and Asia happier you are ????

 

I wish I'd be same....

 

2 hours ago, leosmith said:

I did it in February; didn't know that it was a temporary covid thing.

The temporary 45 day visa-exempt entry terminated on march 31st. TAT widely reported that it would be extended until the end of the year but the government over ruled them. Hopefully, there will be more sensible decisions from the new incumbent. 

arrive 30 days, extend 30 days 1900b boarder bounce,

rinse and repeat twice only, a year (not sure if that is Jan-Dec or 12 months.). So 6months all up

Other options are getting visas from neighboring countries.

6 hours ago, brianthainess said:

arrive 30 days, extend 30 days 1900b boarder bounce,

rinse and repeat twice only, a year (not sure if that is Jan-Dec or 12 months.). So 6months all up

Other options are getting visas from neighboring countries.

Or just get a Tourist visa that gives you 60 days and 1 extension of 30 days for 1900 baht. OP didn't indicating a long stay planned, just 45 days plus 30 day extension

6 hours ago, brianthainess said:

(not sure if that is Jan-Dec or 12 months.). So 6months all up

It is 2 visa exempt via land borders per calendar year.

 

Attention monthly visa in Thailand is 28 w.o.r.k.i.n.g days........

5 minutes ago, Paris333 said:

Attention monthly visa in Thailand is 28 w.o.r.k.i.n.g days........

A Visa Exempt Entry is 30 days.

12 minutes ago, Paris333 said:

Attention monthly visa in Thailand is 28 w.o.r.k.i.n.g days........

"Monthly visa " is a term you invented.

Folk entering via Visa Waiver from approx 64 countries is referred to as visa exempt entry and gives a 30 day permission of stay stamp.

That can be extended by 30 days.

1900baht.

"Working Days" is irrelevant. 

9 hours ago, Paris333 said:

Attention monthly visa in Thailand is 28 w.o.r.k.i.n.g days........

The 30-day permission to stay from a visa exempt entry or entry using a transit visa is 30 days, but includes both the first and last days (so only 29 nights). Whatever you mean by "working days" is incorrect.

9 hours ago, DrJack54 said:

Folk entering via Visa Waiver from approx 64 countries is referred to as visa exempt entry and gives a 30 day permission of stay stamp.

Actually they are different beasts, visa waiver means there is a bilateral agreement, whereas visa exempt has no such agreement

 

Also visa waiver is either 14, 30 or 90 days depending on nationality

 

12 hours ago, DrJack54 said:

It is 2 visa exempt via land borders per calendar year.

 

Is that not what I wrote? 

 

19 hours ago, brianthainess said:

rinse and repeat twice only, a year

 

38 minutes ago, brianthainess said:

Is that not what I wrote? 

You stated the following.....

 

"(not sure if that is Jan-Dec or 12 months.)" 

 

It is two visa exempt entries via land per Calendar year.

 

12 minutes ago, DrJack54 said:

It is two visa exempt entries via land per Calendar year.

and or sea

11 hours ago, bigt3116 said:

Actually they are different beasts, visa waiver means there is a bilateral agreement, whereas visa exempt has no such agreement

 

Also visa waiver is either 14, 30 or 90 days depending on nationality

The terms "visa waiver" and "visa exempt" are synonyms. Also, sometimes used, is "visa free".

12 hours ago, BritTim said:

The terms "visa waiver" and "visa exempt" are synonyms. Also, sometimes used, is "visa free".

Sorry but they are not synonymous, as explained in my post, with the reasons why. That is also why a person's nationality is important when giving advice.

YES

5 hours ago, bigt3116 said:

Sorry but they are not synonymous, as explained in my post, with the reasons why. That is also why a person's nationality is important when giving advice.

I agree that it is important to understand whether the visa exemption (aka visa waiver or visa-free entry) is under the tourist visa exemption scheme or bilateral agreement. In the latter case, the specifics of the treaty determine such things as how many days you receive on entry. They all come under the same umbrella term of "visa exemption". For instance, here is the announcement of the visa exemption treaty between Thailand and Russia: https://moscow.thaiembassy.org/en/content/101305-announcement-no-1-2562-visa-exemption-for-holders-of-russian-passports?cate=5d843b6a15e39c1abc00517b.