@Mike *****

What office was this at?

Your profile shows Hua Hin, so they did allow you to use 40K a month international transfers to get your extension?

@John *********

could indeed be that

and this is the english from the thai translation of how it's actually written

I do not know why offices are not allowing monthly income method by international transfer for marriage/raising thai child extensions. At first just a couple offices stopped but now it seems to be more and more of them.

The only reason you would quote the 40K per month as far as proof of funds based on monthly income method would be because you're getting a marriage or raising thai child extension..

Sadly, we are seeing more and more immigration offices refuse to accept monthly income by transfer for those extensions, all they are accepting either 400k bank money method or 40K per month salary based on working in Thailand legally.

Remember the way the proof of funds based on monthly income by international transfer works is: you would need to transfer 40K per month, each month, every month, into a thai bank account in your name only from abroad for the previous 12 months before you apply for your next extension.

You need to check with your immigration office to see if you can use 40K income per month based on international transfer for your extension based on marriage to a thai or raising thai child

It's 3 months, date to date and several people have reported that is from the date the extension is applied for / granted because that is the day it takes effect.

@Heather *******

there is no mandatory health insurance requirement for a year extension from Non-Immigrant Type O visa. That insurance is only required on Type OA and the LTR visas

As a rule there's no issue leaving during an under consideration stamp although when you apply for the extension let them know you'll be leaving in case they decide to do a home visit so you can coordinate it with them

AND

As James said, make sure you get a re-entry permit (which will be valid only for that u/c stamp) 🙂

As you see other than the Nong Khai/Vientiane crossing (1st Friendship Bridge) this is only in effect at these airports; Vientiane, Luang Prabang, Pakse

I got a report today that someone went to the Thai consulate in Savannakhet showed 3 months worth of bank statements but only had deposited the 400k a few days before he went for the visa.

He was approved, so while it appears they do require a 3-month bank statement they do not necessarily require the 400k to be in the bank for those three months