There has been alot of excitement regarding Bangkok bank's introduction of a requirement for you to have a 4 month lumpsum either before your ext or feeze funds afterward, to obtain a balance certificate for your visa extension. What I've not seen is where someone is using the monthly income method to fulfill the financial commitment? Do they now need the lumpsum as well?

Regarding the 400K baht bank account... can the account be a shared account with my wife (myself as primary account holder)?