The Bureau of Internal Revenue (BIR) has issued Revenue Regulations (RR) No. 18-2006 dated 26 September 2006 on the Improved Voluntary Assessment Program (IVAP) and Revenue Memorandum Circular No. 2-2007 dated 21 December 2006 providing guidelines on the implementation of IVAP.

A taxpayer who has availed of the IVAP shall not be audited, except if authorized by th…

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