Unfortunately, there is no "short-term" extension available for Non-Immigrant-based visas/extensions including retirement.

60-day visiting Thai family extension is the only possible extension for less than one year to a Non-Immigrant-based visa or extension. Unless you have a legal and immediate Thai family in Thailand, you cannot apply for it.

@Nga *************

, yes, correct.

@Ian **********************

, check the latest and detailed requirements for an extension based on retirement from your local immigration office. No police check is required.

@Nga *************

, the very first one is supposed to be in person

@Ian **********************

, that would be the simplest way

That depends on the immigration office. Some accept TM30 receipts from years ago. Some want you to have the TM30 receipt with both check-in/check-out filled "valid" dates. <- means application day is between check-in/check-out dates.

You need to contact your local office about that.

@Ian **********************

, sadly, no "grace period" once the current extension expires after the Thai spouse passes. The foreign husband must leave and enter Thailand again, either on a visa-exempt/waiver/tourist visa, or Non-O from the Thai consulate if he is eligible to apply.

@Nigel ********

, KL is going on eVisa from October.

@Roger *******

, yes, if your embassy in Thailand issues affidavit. 65K baht/month.

In that case, if I understand right, foreign husband can stay until the the end of the current extension. So whether enough days remain or not depends.

@T**

should have a concert answer...