As defined in the Revenue memorandum Circular No. 3-2006 of BIR: SAWT is the mandatory attachments to Tax Returns with Claimed Tax Credits due to Creditable Withholding Tax at Source and of the Monthly Alphalist of Payees (MAP) whose income received have been subjected to withholding tax in the remittance return filed by the withholding agent/payor of income payment. For further reading: Under Section 2.57.2 of RR No.2-98
SAWT is mandated to be submitted quarterly but the annual filing of ITR contains the summary of tax withheld from four quarters.
You may submit your Summary Alphalist of Witholding Tax (SAWT) instead of submitting the Trade References Form required by First Circle. This enables us to verify your transactions faster and reduce friction with your buyers if you have a non-disclosure agreement (NDA) with them.