That sounds about correct, and I understand!! However I still feel that there is far too much paperwork involved, much of which is unnecessary, especially when diving into your personal finances. I ask, why do they need a years bank statement when they already have the bank book stating the same information???
The hand out is useful, but only a small part of all you need. The process is so long and requires so much paper work, and every thing in duplicate, one local copy, one to Bangkok for approval. I have extended a number of times now and I complete the process feeling completely exhausted, there must surely be a more less complicated system for this type of extension.!!!!
You will need to be very patient. Its a long process with mountains of paperwork, not just as quoted in the handout, but many more supplied by the immigration officer you see, plus monetary information supplied by your bank. I have just completed my 5th married to Thai visa. Finished up with A4 paperwork measuring nearly half inch in depth, probably in the region of 50 x A4 sheets, additionally everything has to be duplicated so one copy of the application can be sent to Bangkok, whilst the second copy remains at your local office. Good luck you will need it plus lots of patients!!!!
I have married to Thai visa, my monthly income 40,000 (married to Thai) comes from Uk directly into my Thai bank, and they supply me with confirmation each month with a print out. Just a note, this system is long and complicated, much paperwork, and you have to supply 2 copies of everything.
I get a monthly payment receipt from my bank and produce them with a yearly summary when I apply, plus statement from my bank not more than 2 days before application
I do not use the lump sum approach, I submit for marriage to Thai visa extension the proof of 40,000 monthly option. The 100,00 amount is what I also have to show in my bank book, nothing to do with visa requirements, just one of the extra items that my office require which is not quoted on the requirements needs. Much like every office has its own quirky rules. When they get a new OIC, he/she brings in their own supplementary rules. You just have to find out these and apply them, no good arguing that they are not on the requirements list
Every Office is different, for example in Hua HIn where I do my extension, I have to produce my bank book with 100,000 B in it, and the witness has to attend.
Every office want something different, the only way is go and ask what they want before you start putting the application together, make sure they stamp and sign the list. Make sure you take that list with you, why you go to extend.