Sources

Official source inventory and handling notes

The site uses a source stack, not a single file: PSA browse pages for official framing, the BSP workbook for the practical subclass layer, and the BIR page for registration intent context.

PSA PSIC overview

Role: main browse source and public version reference

Official URL: https://psa.gov.ph/classification/psic

PSA PSIC classes page

Role: public class browse layer

Official URL: https://psa.gov.ph/classification/psic/class

BSP Annex D.2.A workbook

Role: practical subclass workbook used for the site's searchable operational layer

Local file: Annex D.2.A (Cir1197_2024).xlsx

Official URL: https://www.bsp.gov.ph/Lists/Download%20Section/Attachments/49/Annex%20D.2.A%20(Cir1197_2024).xlsx

PSIC 2019 PDF publication copy

Role: hierarchy title and official-note extraction layer used in this build

Local file: PSA_PSIC_2019.pdf

Official URL: https://bir-cdn.bir.gov.ph/BIR/pdf/PSA_PSIC%202019.pdf

BIR Industrial/Occupational Code page

Role: tax and registration intent reference

Official URL: https://www.bir.gov.ph/industrial-occupational-code

Known source differences

PSA overview page lists 519 classes, while the BSP practical workbook layer used here resolves to 520 distinct four-digit prefixes.
PSA overview page lists 1360 subclasses, while the official BSP workbook used as the site's operational dataset currently exposes 1272 five-digit rows.