Effective February 1, 2012, all individuals and business entities in Thailand should use a 13 digits tax identification number to replace the previous 10 digits. Although the new tax identification went live on February 1, 2012, the Revenue Department has extended the period of using the 10 digit Tax ID to January 31, 2013. The extension period is applicable for taxpayers whose withholding certificates, tax invoices, receipts and invoices have already been prepared using a 10 digits tax ID number.
As I have mentioned earlier in my blog, Exact Globe Next supports the Thailand Withholding Tax as of product update 402. Due to this legal change, all the related tax forms like the withholding certificates (P.N.D.3 and P.N.D.53) have been adjusted and enhancements have been added in this product update 405, which is generally available as of the end of October. For more information please refer to the release note.