Deadlines
BIR filing deadlines for 1601Cv2018, 1702Qv2018C and 2551Qv2018.
Next: 1702Qv2018C for Q3 2026 is due Tuesday, December 1, 2026.
Dates follow BIR's rules and announced nationwide extensions, checked on November 8, 2026. 2551Qv2018's dates are for quarters ending March, June, September and December; the corporate income tax returns' dates are for a calendar year. BIR's own announcements come first: if BIR moves a deadline, follow BIR.
Why may some dates move?
Tax Techie hasn't added 2027's holidays yet: they are added when the President proclaims them. Until then, those dates are moved off weekends only. If one falls on a holiday, the deadline moves to the next working day. They are marked below.
December 2026
| Due |
Form |
For |
Notes |
|
Tuesday, December 1, 2026
Next
|
1702Qv2018C
|
Q3 2026 |
|
|
Thursday, December 10, 2026
|
1601Cv2018
|
November 2026 |
|
January 2027
| Due |
Form |
For |
Notes |
|
Friday, January 15, 2027
|
1601Cv2018
|
December 2026 |
May move later.
|
|
Monday, January 25, 2027
|
2551Qv2018
|
Q4 2026 |
May move later.
|
February 2027
| Due |
Form |
For |
Notes |
|
Wednesday, February 10, 2027
|
1601Cv2018
|
January 2027 |
May move later.
|
March 2027
| Due |
Form |
For |
Notes |
|
Wednesday, March 10, 2027
|
1601Cv2018
|
February 2027 |
May move later.
|
April 2027
| Due |
Form |
For |
Notes |
|
Monday, April 12, 2027
|
1601Cv2018
|
March 2027 |
May move later.
|
|
Monday, April 26, 2027
|
2551Qv2018
|
Q1 2027 |
May move later.
|
May 2027
| Due |
Form |
For |
Notes |
|
Monday, May 10, 2027
|
1601Cv2018
|
April 2027 |
May move later.
|
|
Monday, May 31, 2027
|
1702Qv2018C
|
Q1 2027 |
May move later.
|
June 2027
| Due |
Form |
For |
Notes |
|
Thursday, June 10, 2027
|
1601Cv2018
|
May 2027 |
May move later.
|
July 2027
| Due |
Form |
For |
Notes |
|
Monday, July 12, 2027
|
1601Cv2018
|
June 2027 |
May move later.
|
|
Monday, July 26, 2027
|
2551Qv2018
|
Q2 2027 |
May move later.
|
August 2027
| Due |
Form |
For |
Notes |
|
Tuesday, August 10, 2027
|
1601Cv2018
|
July 2027 |
May move later.
|
|
Monday, August 30, 2027
|
1702Qv2018C
|
Q2 2027 |
May move later.
|
September 2027
| Due |
Form |
For |
Notes |
|
Friday, September 10, 2027
|
1601Cv2018
|
August 2027 |
May move later.
|
October 2027
| Due |
Form |
For |
Notes |
|
Monday, October 11, 2027
|
1601Cv2018
|
September 2027 |
May move later.
|
|
Monday, October 25, 2027
|
2551Qv2018
|
Q3 2027 |
May move later.
|
November 2027
| Due |
Form |
For |
Notes |
|
Wednesday, November 10, 2027
|
1601Cv2018
|
October 2027 |
May move later.
|
How each deadline is set
-
1601Cv2018 (Monthly Remittance Return of Income Taxes Withheld on Compensation): File it on or before the 10th day of the month after the month it covers. December's return is due on or before January 15 of the next year.
How to file 1601Cv2018
-
1702Qv2018C (Quarterly Income Tax Return for Corporations, Partnerships and Other Non-Individual Taxpayers): File it within 60 days after each of the first three quarters of the taxable year ends: for a calendar year, the quarters ending March, June and September.
How to file 1702Qv2018C
-
2551Qv2018 (Quarterly Percentage Tax Return): File it within 25 days after each quarter ends, for quarters ending March, June, September and December.
How to file 2551Qv2018
A deadline on a Saturday, Sunday or regular holiday moves to the next working day. Tax Techie doesn't file through eFPS: eFPS filers have their own deadlines. Each form's rule and its sources are in its guide.