GST filing dates vary by country and return type, but generally involve monthly/quarterly filings for sales (GSTR-1) around the 11th/13th, summary returns (GSTR-3B) by the 20th-24th, and annual returns (GSTR-9/9C) by December 31st, with specific dates depending on turnover (like the QRMP scheme in India) or filing frequency (monthly, quarterly, semi-annual) for different taxpayers, so always check your specific jurisdiction (e.g., IRAS for Singapore, Canada Revenue Agency for Canada).
Quarterly GST Returns Due Dates
The GSTR-1 due date is the 13th of the month following the quarter. It has details of the outward sales results of the quarter. The GSTR-3B due date for those who file tax quarterly is the 22nd or 24th of the month next to the quarter.
GST Notification 17/2025-Central Tax dt. 18-October-2025
Registered taxpayers can now file their GSTR-3B for the month of September 2025 or the quarter of July–September 2025 by October 25, 2025, instead of the earlier due date.
Annual GST/HST Filers (Individuals with December 31 fiscal year-ends) For sole proprietors who are annual GST/HST filers and have a December 31 year-end, the deadline for filing your GST/HST return is June 15. If you owe GST/HST, the balance owed is April 30.
Interest on Late Payment of GST:
If the taxpayer is unable to pay GST on time due to some reason, an interest is charged on the GST payment. An interest on late payment of GST is of 18% per annum and will be charged for the days after the due date.
You face a penalty when you file your GST/HST return late if you owe money. The penalty equals 1% of your unpaid amount plus 0.25% of that amount for each full month your return is late. The maximum penalty period is 12 months. After that, no additional monthly charges apply.
Here are some of the primary and most common errors made by enterprises, and this is how you can fix them as well.
Tax bodies are demanding an extension because “For FY 2024–25, the format, instructions and disclosure requirements of Forms GSTR-9 and GSTR-9C were revised through multiple notifications issued during the year, including those released in June 2024, December 2024 and mid-2025.
Grace periods typically range from 15 to 30 days. While technically a customer could wait until the exemption date to pay, insurers may still treat the premium as GST-inclusive based on the due date, not the payment date. ...
The CRA will make these payments on the 5th day of July and October 2025, and of January and April 2026.
The shift to a two-slab system of 5% and 18%, removing the earlier 12% and 28% rates, will make taxation more transparent and easier to follow. At the same time, a 40% on luxury and sin goods such as pan masala, tobacco, aerated drinks, high-end cars, yachts, and private aircraft ensures fairness and revenue balance.
The GST network issued another advisory on 7th June 2025, implementing the rule of time-barring of GST return filing beyond three years from the due date. By this update, taxpayers will not be able to file GST returns after three years from the due date of such return.
If you're filing your GST every two months, your due dates will be:
Interest, currently 8.96% p.a. calculated on a daily rate, will be added to the overdue amount. Where you cannot pay the overdue amount, the ATO will discuss a payment plan and whether the debts can be waived if there is financial hardship.
Requesting for extensions
GST-registered businesses must maintain proper transaction tracking systems and ensure adequate resources to file their GST returns on time. We may grant extensions to filing due date in these circumstances: Newly registered businesses. Cases that meet our acceptable reasons (listed below)
The return for September 2025 may now be filed till October 25, 2025, and similarly, for taxpayers filing quarterly returns (July–September 2025 quarter), the due date is also extended to October 25, 2025.
For GST, the CRA filing and payment deadline is 3 months after your fiscal year end. For GST filed and paid annually, the CRA payment deadline is April 30 and the filing deadline is June 15. For GST filed and paid monthly and quarterly, the CRA filing and payment deadline is one month after the reporting period.
Penalties for a late GST return
GST returns are due every two months or six months, depending on the option you chose when you registered. You'll be charged a penalty for late filing – $50 if you're on the payments basis; $250 if you're on the hybrid or invoice basis.
Types of GST in India
CGST (Central Goods and Services Tax) SGST (State Goods and Services. IGST (Integrated Goods and Services Tax) UTGST (Union Territory Goods and Services Tax)
Late submission penalty. A late submission penalty of $200 is imposed immediately when the GST return is not filed by the due date. A further penalty of $200 is imposed for every completed month that the GST F5/F8 return remains outstanding. The maximum penalty amount for each outstanding F5/F8 return is $10,000.
Backdating your GST registration
Backdating a GST registration is limited to 4 years. This means, unless there is fraud or evasion: we can't backdate your GST registration by more than 4 years. you are not required to be registered before that date.
The Indian Government has amended the GST Rules, 2022, to provide that failure to file monthly or quarterly GST reports in form GSTR 3B for a continuous period of 6 months, or for two consecutive tax periods or simply GST not filed for 6 months continuously, would henceforth result in GST registration cancellation.