@Tyrisha *********
It depends on the basis you are applying under, as there are different options. For a Non-Immigrant O visa, there are two alternatives, either documented monthly income of at least the equivalent of 65,000 baht per month, or a lump sum of 800,000 baht. You normally submit three months of documentation. If you apply based on monthly income, each month must meet the minimum amount. If you apply based on a lump sum, it is usually sufficient that the ending balance meets the requirement. For a DTV, immigration and embassies often expect the funds to be โseasonedโ, typically for at least three months. For a standard single-entry tourist visa, it is usually sufficient to document funds equivalent to about 20,000 baht via a bank statement.