

Output GST - Input Tax Credit (ITC) = Net GST Payable
Output GST is the tax you collect from customers. Input Tax Credit (ITC) mechanisms allow you to reduce your payable tax by the tax you’ve already paid on your purchases of goods and services. Accurate records of sales, purchases, and their HSN (Harmonised System of Nomenclature) or SAC (Services Accounting Code) classifications are crucial for precise calculation.
| Return Type | Monthly Filing Due Date | Quarterly Filing Due Date (for QRMP Scheme) |
|---|---|---|
| GSTR-1 (Details of Outward Supplies) | 11th of the next month | 13th of the month following the quarter |
| GSTR-3B (Summary Return & Payment) | 20th of the next month | 22nd or 24th of the month following the quarter (based on state) |
If you’d like tailored guidance, speak with a cross‑border tax professional at Tohme Accounting.
| Reporting Period | Filing & Payment Due Date |
|---|---|
| Annual | Three months after your fiscal year-end. |
| Quarterly | One month after the end of each quarter. |
| Monthly | One month after the end of each month. |
| Reporting Period | Filing Deadline | Payment Deadline |
|---|---|---|
| Annual (Taxable supplies under $1.5 million) | Three months after your fiscal year-end. | Three months after your fiscal year-end. |
| Quarterly (Taxable supplies between $1.5 million and $6 million) | One month after the end of your fiscal quarter. | One month after the end of your fiscal quarter. |
| Monthly (Taxable supplies over $6 million) | One month after the end of your fiscal month. | One month after the end of your fiscal month. |
| Note: If your deadline falls on a weekend or public holiday, it shifts to the next business day. |
You can remit your GST/HST payments through your financial institution, either online, by phone, or in person. The CRA also accepts payments by pre-authorized debit via My Business Account, or by mail with a cheque or money order. Understanding GST planning for your business is key to managing these obligations.
Your GST/HST payment due date depends on your reporting period, which could be monthly, quarterly, or annually. Generally, the payment is due one month after the end of your reporting period, but annual filers have an extra two months to pay compared to their filing deadline.
If you pay your GST/HST late, the CRA will charge interest on the overdue amount. Penalties for late tax payments may also apply if you repeatedly miss payment deadlines or fail to file on time, so it is always best to submit payments promptly.
Yes, you can make a payment directly to the CRA using My Business Account via the “Pay now” service. This method allows you to set up a pre-authorized debit from your Canadian bank account for current or future payments.
You will always need your 15-character GST/HST account number, which identifies your business. Ensure you use the correct number to avoid misapplied payments and potential penalties, especially when paying through a financial institution.
Samer Tohme, CPA – Tohme Accounting is a Canadian firm (Ottawa & Toronto) specialising in cross-border Canadian-U.S. tax, corporate tax filing, bookkeeping, GST/HST, and crypto accounting for SMBs and individuals. We take on US and Canadian clients and take on all tax and accounting related work.