The Official letter No. 340/TCT-TTR dated 04 February 2012 on the implementation of inspection and examination about complying with tax laws, combined with checking invoices at taxpayers’ headquarters under Decree No. 51/2010/NĐ-CP.
The Official letter No. 18036/BTC-TCT dated 30 December 2011 in guidance eof a number of contents in the course of implementation of Decree No. 51 and Circular No. 153/2010/TT-BTC