Sources
Every rate, bracket, multiplier and date on AyTool is transcribed from the official issuances below and re-verified on each agency's update cycle. We do not source numbers from other calculator sites.
SSS — Social Security System
- SSS Contribution Table (official)
- 2025 Schedule of Contributions PDF (Circulars 2024-006 to 2024-010, in force 2026)
- SSS main site / My.SSS portal
Used by: SSS Contribution Table & Calculator, Take-Home Pay Calculator
PhilHealth — Philippine Health Insurance Corporation
- PhilHealth Advisory No. 2026-0042 (premium payment, direct contributors)
- PhilHealth Circular 2020-0005 Rev. 1 (premium schedule under the UHC Act)
- PhilHealth main site
Used by: PhilHealth Contribution page, Take-Home Pay Calculator
Pag-IBIG Fund — Home Development Mutual Fund (HDMF)
- HDMF Circular No. 460 (MFS increase to ₱10,000, Feb 2024)
- Pag-IBIG Fund main site / Virtual Pag-IBIG
Used by: Pag-IBIG Contribution page, Take-Home Pay Calculator
BIR — Bureau of Internal Revenue
Used by: Take-Home Pay Calculator
DOLE — Department of Labor and Employment / Bureau of Working Conditions
- Handbook on Workers’ Statutory Monetary Benefits (2024 edition)
- Labor Advisory No. 12-25 (2026 holiday pay rules)
- DOLE on final pay & COE (Labor Advisory No. 06-20)
Used by: 13th Month Pay, Holiday Pay, Night Differential, Overtime, Final Pay calculators
Malacañang / Presidential Communications Office
Used by: Holiday Pay Calculator (2026 holiday calendar)
DMW — Department of Migrant Workers
Used by: OEC Exemption Guide
PRC — Professional Regulation Commission
Used by: PRC Board Exam Schedule 2026