REVENUE REGULATIONS NO. 7-2006 issued on June 16, 2006 further amends certain provision of Revenue Regulations (RR) No. 6-2005, as amended by RR No. 10- 2005, pertaining to the deadline in the filing of the No Audit Program (NAP) Participation Form. A taxpayer must file a duly accomplished application form, together with all its attachments, not later than 30 days from the statutory deadline for the filing of the annual Income Tax Return (ITR) for the year subject of the application. In the case of taxpayers whose statutory deadline for filing their annual ITR occurred earlier than the date of the effectivity of these Regulations, their application must be filed within 30 days from the effectivity thereof. However, for 2005 qualification year, the NAP Participation Form of the taxpayer, together with the required attachments, must be filed on or before June 30, 2006. All returns and payment made by a taxpayer who applied to participate in the NAP are deemed final and conclusive, and by applying to participate in the NAP, the taxpayer shall be deemed to have waived all of his rights to claim any refund appertaining thereto. Only taxpayers whose annual ITRs were not amended may apply to participate in the NAP. In the event the amount of taxes paid shall not be sufficient to qualify a taxpayer for the NAP, he may still qualify by making a voluntary payment in an amount not less than the deficiency required for him to qualify. Provided, that said payment shall be non-refundable nor deductible against his income. Provided, further, that said voluntary payment shall form part of the base of the year for which it was paid for purposes of determining his qualification for NAP in the subsequent tax year.