Philippine Tax Calendar 2025. In this year's calendar, deloitte philippines features worldimpact—a portfolio of initiatives focused on making a tangible impact on society’s biggest challenges and creating a more sustainable. The bureau of internal revenue (bir) website (www.bir.gov.ph) is a transaction hub where the taxpaying public can conveniently access anytime, anywhere updated information on the philippine tax laws and their implementing.

In this year’s calendar, deloitte philippines features worldimpact—a portfolio of initiatives focused on making a tangible impact on society’s biggest challenges and creating a more sustainable. The bureau of internal revenue (bir) website (www.bir.gov.ph) is a transaction hub where the taxpaying public can conveniently access anytime, anywhere updated information on the philippine tax laws and their implementing.