For extension of stay renewal of Non O retitrement visa I have had 400K in the bank permanently all year and just increased to 800K which will be fully seasoned for 60 days in early March. The ledger balance of my bank accounts I will do at the BKK BNK at CW on the day it is required, just as I did last year. I am guessing only the branch which holds my accounts of BKK BNK issue the letter guaranteeing compliance for immigration of the 800K
But is there a special name given this letter when I go ask?