| Dec 10, 2020 | Filing and payment | BIR Forms 1601C, 0619-E and 0619-F (Non-eFPS Filers) |
| Dec 11, 2020 | e-Filing | BIR Form 1601C, 0619-E and 0619-F (eFPS Group E) |
| Dec 12, 2020 | e-Filing | BIR Form 1601C, 0619-E and 0619-F (eFPS Group D) |
| Dec 13, 2020 | e-Filing | BIR Form 1601C, 0619-E and 0619-F (eFPS Group C) |
| Dec 14, 2020 | e-Filing | BIR Form 1601C, 0619-E and 0619-F (eFPS Group B) |
| Dec 15, 2020 | e-Filing | BIR Form 1601C, 0619-E and 0619-F (eFPS Group A) |
| e-Payment | BIR Form 1601C, 0619-E and 0619-F (all eFPS Filers) |
| Dec 20, 2020 | Filing and payment | BIR Forms 2550M (Non-eFPS Filers) |
| Dec 21, 2020 | e-Filing | BIR Forms 2550M (eFPS Group E) |
| Dec 22, 2020 | e-Filing | BIR Forms 2550M (eFPS Group D) |
| Dec 23, 2020 | e-Filing | BIR Forms 2550M (eFPS Group C) |
| Dec 24, 2020 | e-Filing | BIR Forms 2550M (eFPS Group B) |
| Dec 25, 2020 | e-Filing | BIR Forms 2550M (eFPS Group A) |
| e-Payment | BIR Forms 2550M (all eFPS Filers) |
