A revised BIR form designed in line with the BIR Integrated Tax System (ITS) to be used as attachment to BIR Form No. 1701 and to be accomplished by self-employed individuals, estates and trusts engaged in trade and business, which shall contain the taxpayer's business profile information and other relevant data to be lifted from the Audited Financial Statements. BIR Form 1701 AIF is not, however, required for individual taxpayers who opted for Optional Standard Deduction (OSD).