What is the GSTR-3B due date in December 2026?

For monthly filers, GSTR-3B for Nov 2026 is due on 20 December 2026. QRMP taxpayers file quarterly, by the 22nd or 24th of the month after the quarter depending on their state.

What is the GSTR-1 due date in December 2026?

For monthly filers, GSTR-1 for Nov 2026 is due on 11 December 2026.

When is TDS to be deposited in December 2026?

TDS deducted in Nov 2026 is to be deposited by 7 December 2026.

Do these dates include extensions?

No. They are the default statutory dates. When the government extends a date, the notification overrides what is shown here.

COMPLIANCE CALENDAR

GST, TDS, income tax and ROC due dates: December 2026

The main statutory due dates in December 2026 are: 7 December: Challan 281N; 11 December: GSTR-1; 15 December: Challan 280N; 20 December: GSTR-3B; 31 December: GSTR-9 / 9C, ITR. These are the default dates; an extension notified by CBDT, CBIC or MCA overrides them, and a date that falls on a Sunday or public holiday moves to the next working day.

Mon

Challan 281N · Deposit TDS / TCS · Nov 2026

Thu

GSTR-7 / GSTR-8 · GSTR-7 (GST TDS) / GSTR-8 (e-commerce TCS) · Nov 2026

Fri

GSTR-1 · GSTR-1 (monthly) · Nov 2026

Sun *

GSTR-6 · GSTR-6 (input service distributor) · Nov 2026
IFF · IFF: optional B2B invoices (QRMP) · Nov 2026

Tue

Challan 280N · Advance tax instalment 3 (75% cumulative) · FY 2026-27
ECR / ESI challan · PF and ESI payment with ECR · Nov 2026

Sun *

GSTR-3B · GSTR-3B (monthly) with tax payment · Nov 2026Table 3.1 is locked to GSTR-1 from the July 2025 period: correct GSTR-1 through GSTR-1A before filing.

Fri

PMT-06 · PMT-06 monthly tax payment (QRMP) · Nov 2026

Thu

GSTR-9 / 9C · GST annual return and reconciliation statement · FY 2025-26GSTR-9 is mandatory above Rs 2 crore turnover and GSTR-9C above Rs 5 crore.
ITR · Belated or revised income-tax return · FY 2025-26Finance Act 2026 allows a revised return up to 12 months from the end of the year, with a fee if filed after nine months. Belated returns remain due by this date.

* Falls on a Sunday, so the next working day applies. ROC dates assume the AGM is held on 30 September.

Common questions

What is the GSTR-3B due date in December 2026?: For monthly filers, GSTR-3B for Nov 2026 is due on 20 December 2026. QRMP taxpayers file quarterly, by the 22nd or 24th of the month after the quarter depending on their state.
What is the GSTR-1 due date in December 2026?: For monthly filers, GSTR-1 for Nov 2026 is due on 11 December 2026.
When is TDS to be deposited in December 2026?: TDS deducted in Nov 2026 is to be deposited by 7 December 2026.
Do these dates include extensions?: No. They are the default statutory dates. When the government extends a date, the notification overrides what is shown here.

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