IMO the best is to get a Non-O at a Thai Embassy/Consulate as the 90 day permission to stay upon entry can be extended for one year for purpose of retirement at Thai Immigration - in this case, the 800k will need to be in a Thai bank OR if using income method, at least a couple of transfers of at least 65k to a Thai Bank (can be done in the first part of the 90 day permission) - 30 days before the 90 day stay concludes, you can apply at Thai Immigration for the one year extension - no health insurance requirement.

If you apply for a Non-O-A, it must be done in your country of residence (usually home country) and you will be required to have health insurance coverage showing documents required by Thai Embassy/Consulate where you apply. Also, be aware, that although a Non-O can be obtained for purpose of retirement at most Thai Embassies/Consulates - that may not be the case in your home country, e.g., in USA, they will not issue a Non-O for purpose of retirement, but insist that you apply for the Non-O-A instead.

Your husband can enter Thailand on Tourist Visa or Visa Exempt and apply for a Non-Immigrant O Visa as part of a two step process to get an extension of stay for purpose of retirement. This involves your husband applying for the Non-O Visa, getting a 90 day permission to stay from date of issue, and then applying for one year extension after 60 of those days have elapsed. You as the spouse can qualify to "piggy back" on his extension once he receives it - BUT as mentioned by Tod Daniels, you will need to have entered Thailand on a Non-Immigrant Visa (usually category O) to obtain such an extension - the spouse's age has no bearing when using being a dependent of a retiree to also obtain a long stay exemption. Time can be a problem as you would need to leave Thailand and apply for the Non-Immigrant O Visa at a Thai Embassy/Consulate outside of Thailand - enter using that Visa, and then apply for a long stay extension to coincide with your husbands. In order for you to get the Non-O Visa as being the spouse of a retiree from a Thai Embassy/Consulate, it will need to be based on your being the spouse of a retiree whose extension has been granted. An option is for you both to apply for a Non-Immigrant O Visa from a Thai Embassy/Consulate other than the USA (read on) - he on the based of retirement and you as his spouse. The reason I mention not getting the Non-Immigrant O Visa from Thai Embassy/Consulate in USA is they will not issue them for the purpose of retirement (an allowable purpose which can be used to get the Non-O Visa elsewhere) - instead, they will insist on your husband applying for the Non-Immigrant O-A Visa and you the Non-Immigrant O Visa as his spouse. Since Immigration has changed their rules, now for your husband to obtain the O-A Visa he will need to show he has health insurance -- in most cases an expensive policy obtained from a Thai company as there is a question as to whether a US health insurance company will be willing to issue the "certificate" the US Thai Embassy/Consulate will require.

When I obtained the letter from my Bangkok Bank branch here in Pattaya last June, I paid 500 baht for them to print out the Credit Advices - one for each foreign source (FTT code) deposit for the preceding 12 months (there were over 20 deposits) - from these advices, they prepared the letter for Immigration listing all foreign deposits for the 12 month period - the fee was 100 baht for the letter. So, the total I paid was 600 baht - I was under the impression the 500 baht fee for printing out the advices was the standard fee without regard to the number involved.

An METV is valid for entry for 6 months from date of issue. On each entry during that period, you will receive a Permission to Stay of 60 days - but, you can apply for a one time extension of an additional 30 days for EACH of those entries, thus getting a 90 day stay if you so choose.

To originally receive the Non B, you needed documentation from employer it was issued by an Embassy/Consulate outside of Thailand and was valid for initial "entry" into Thailand. Upon entry, Immigration gave you a permission to stay of 90 days, which they give for the majority of Non-Immigrant Visas regardless of category (B, O, etc.). To remain in Thailand, you would have applied for an extension of that stay at Thai Immigration for the purpose of teaching (work), which also required a Work Permit. The extensions could be renewed for that purpose so long as you continued to work and hold a work permit. The Immigration Rules for granting an extension of stay based on marriage requires you entered on a Non Immigrant Visa - it can be "O" or a "B" or some other category. I would suggest you check with your local Immigration Office to see if they will accept it for a marriage extension without the need for changing your Visa category.

I am not familiar with Khon Kaen, but as a general rule, you do not have to change your Visa status (from B to O) -- To extend your stay for being married to a Thai, the rule requires you entered on a Non-Immigrant Visa, but does not stipulate any particular category. So, you should be able to simply change your reason for applying for an extension of stay from business to marriage.

Based on the posting it appears the question relates to the requirement to report back to Immigration 90 days after getting a retirement/marriage extension - first, or a marriage extensions, there is no requirement to report back with your bank book as there is not requirement to keep the 400k in the account. In the case of a retirement extension using 800k most Immigration Offices do not require you to report back in 90 days, but some do [not to be confused with 90 day address reporting, which is something else entirely]. One of those requiring the report for retirement extensions using 800k baht in the bank is Chonburi (Pattaya). The reference to multi-entry is apparently to using a multiple Re-Entry Permit to keep the extension valid. If it is Pattaya Immigration, if you are not in Thailand on the reporting date they give you to show your bank book (90 days from date of extension), there is no problem. Just take your bank book in upon your return -- all they are interested in is that your bank book shows you kept the 800k on deposit for the full 90 days after getting the extension as now required by Immigration rules.

You should apply for the Non-Immigrant O Visa based on being related to a Thai (marriage) - check the Consulate's website for required documents. No health insurance required. It is my understanding that Thai Embassy & Consulates in USA will not give a Non-Immigrant O Visa for the purpose of retirement, but will insist on you applying for the Non-Immigrant O-A Visa if that is your purpose for applying for the Visa.

How long is this visa valid for - is is 6 months from when I receive the visa or longer than this? The Visa is valid for entry up to 6 months from date of issue. As a multiple entry, you will receive a 60 day permission to stay upon each entry within the validity period. Thus, if you enter the day before the Visa expires (Enter by date on Visa), you will still get a 60 day permission to stay. While in Thailand on each of those entries, you can apply for a one time extension of 30 days, which is added to the original 60 day permission to stay.

Although the multiple Re-Entry Permit is 3,800 compared to 1,000 baht for the single RE Permit, if you plan as many as 3 trips, it may cost 800 baht more, but you may want to consider the space the RE Permit stamps takes up in your passport as the multiple is only one stamp - if you don't have a lot of pages remaining, it may be worth the extra to save the space. Just a suggestion, as we often hear, its up to you.