GST/HST instalments: the $3,000 tests for annual filers

Goods and services tax or harmonized sales tax (GST/HST) instalments are advance payments toward the year's net tax. This rule concerns annual filers whose net tax meets a threshold in both the previous and current fiscal years. A fiscal year is the business's financial year. Monthly and quarterly filers have a different regular payment schedule. This article does not cover that schedule.

Who this actually applies to

An annual filer reports GST/HST once for the full fiscal year, rather than monthly or quarterly. Check the client's actual filing frequency first. Applying this threshold to a quarterly filer could create a false warning. Overlooking it for an annual filer could miss a real payment requirement.

The $3,000 net-tax threshold

An annual filer must make quarterly instalments only if net tax is at least $3,000 in both the previous fiscal year and the current fiscal year. The previous year alone is not enough. Net tax is the tax amount calculated under the GST/HST return rules, before the other rebates or adjustments discussed here. Passing $3,000 once does not create a permanent requirement. If a later year's net tax is below $3,000, this requirement does not apply to that year on that basis. A past year below the threshold does not guarantee exemption in future years either. A rebate or other adjustment may reduce the final payment without removing the requirement. Check each year's net tax against $3,000, not just the final balance after other adjustments. For branches or divisions filing separate returns, use the whole business's combined net tax for the $3,000 test. Do not test each branch separately. Short fiscal years and new registrants without a full prior year may have different treatment. Check the current rule in the Canada Revenue Agency's (CRA) Guide RC4022 for those cases.

Worked example: a studio business crossing the threshold

A fictional design studio owned by one person files GST/HST annually. Last fiscal year, it collected $14,200 in GST/HST on sales. It claimed $10,800 in input tax credits, which recover eligible GST/HST paid on business purchases.

Original worked example: net tax against the instalment threshold

Item	Amount
GST/HST collected on sales	$14,200
Input tax credits claimed	$10,800
Net tax ($14,200 − $10,800)	$3,400

The $3,400 meets the previous-year test of $3,000. Now suppose the current year's net tax is also expected to be at least $3,000. Both conditions are then met for the current year. One common calculation uses the previous year's net tax: $3,400 ÷ 4 = $850 per quarter. Each payment is due within one month after the fiscal quarter ends. A business expecting lower current-year net tax may instead use a lower current-year estimate. But CRA may charge instalment interest on the shortfall if that estimate is too low. Using the previous year is therefore usually the more cautious choice unless there is a clear reason to expect a lower current year. Use current CRA rules to calculate a real business's exact amounts and dates. This example does not replace them.

What this does not cover

This article covers only the annual-filer instalment rule described above. CRA's guide covers other annual-filer and instalment situations too. Check it if your case differs. Monthly and quarterly payment dates are a separate topic. This article is not an instalment calculator; use current CRA tools and guidance for exact amounts. Bookwits tasks and budget features can keep a recurring “GST/HST instalment due” reminder with the client file once the requirement and dates are confirmed elsewhere. Bookwits does not calculate net tax or decide who needs instalments. An instalment is part-payment of the year's eventual net tax, not another tax. Keep the full annual return and compare its amount with the instalments actually paid.