What proof is required for a statutory declaration about income at the Australian embassy in Thailand?

The discussion revolves around the requirements for obtaining a statutory declaration regarding income at the Australian embassy, particularly focusing on the varying requirements between the embassy in Bangkok and the consulate in Chiang Mai. It highlights that the Chiang Mai consulate requires proof for the declaration, while Bangkok may only require filling out a form without additional documentation. There is also an inquiry about whether a statutory declaration needs to be translated into Thai for a Non-O visa application based on marriage.