GST/HST Filing for Canadian Small Businesses: What You Need to Know

Do you need to register for GST/HST?

Generally, businesses that are no longer a 'small supplier' under CRA rules must register to collect and remit GST/HST. Many businesses choose to register earlier than required so they can claim input tax credits on business expenses.

Because thresholds and rules can change and vary by circumstance, this is worth confirming directly with the CRA or a qualified advisor rather than relying on general guidance alone.

Filing frequency

Once registered, the CRA assigns a filing frequency — typically monthly, quarterly, or annually — based on your revenue. Higher-revenue businesses often file more frequently. Whatever your frequency, consistency matters: reconciling GST/HST collected and paid every period prevents a stressful scramble at year-end.

Common mistakes we see

Missing input tax credits on legitimate business expenses, filing late and incurring penalties, mixing personal and business transactions, and not reconciling GST/HST payable against actual bank activity are the most frequent issues we help clients correct.

How we help

Our GST/HST Filing service handles preparation, filing, reconciliations, and CRA correspondence, so returns go in accurately and on time — and if the CRA does reach out, our CRA Audit & Compliance Support service helps you respond with confidence.