A professional toolkit for Philippine tax compliance, built by practitioners, for practitioners and business owners alike. It does two things: simplify and automate the preparation of tax attachments and certificates.
aRTCo Tax™ is a tax compliance platform developed by the Tax Compliance Group of Reyes Tacandong & Co. It automates the preparation of the Quarterly Alphalist of Payees (QAP), the Summary Alphalist of Withholding Tax (SAWT), the Monthly Alphalist of Payees (MAP), the Summary List of Sales, Purchases, and Importations (SLSPI), and the Annual Alphalists prescribed by the BIR, producing DAT files that conform to the latest BIR specifications in RMC Nos. 7-2021, 15-2025, and other related BIR issuances.
It also prepares BIR Form No. 2307 (Certificate of Creditable Tax Withheld at Source), BIR Form No. 2306 (Certificate of Final Tax Withheld at Source), and BIR Form No. 2316 (Certificate of Compensation Payment / Tax Withheld). Each certificate may be generated directly from the corresponding alphalist DAT file, so you don't have to manually do it.
Each DAT output is validated against the prevailing BIR specifications in the Alphalist Validation and RELIEF packages before release, allowing discrepancies to be identified and resolved internally before filing with the BIR. The platform is designed to complement existing accounting systems, providing purposely-built tools for attachments and certificates without the overhead of a full platform migration.
With gratitude to our colleagues at the firm's IT function, whose collaboration shaped this work.
With deep gratitude to the firm's Privacy Unified Security Office, whose diligence and counsel safeguarded the privacy and security of this platform, and of everyone who entrusts it with their data.
aRTCo Tax™ (April 2026)