You already did your ITR declaration and you have some balance to pay the BIR?
Go to https://myeg.ph/services/bir
Hit PAY TAXES ONLINE button.
Create an account signing up.
Confirm it and access the page again.
Hit BIR payments.
Hit PAY TAXES ONLINE button.
Fillup the form details.
Select mode of payment (there might be some processing fees depending on which payment channel you pick).
I paid Gcash and got instant confirmation on screen when payment was done (processing fee 20php).
DONE 🙂 ty