GST/HST filing in Mississauga

The work covers the GST/HST return (the GST34), input tax credits, the filing frequency, instalments where they apply and the notice of assessment that follows.

One tax, one registration, one return

Ontario harmonized, and the structural consequences run further than most owners realize. The 13% HST is a single tax comprising a 5% federal component and an 8% provincial component, collected and administered by the Canada Revenue Agency. There is no separate Ontario registration, no separate provincial return, and no provincial audit body to satisfy alongside the federal one.

The more important consequence is on the purchasing side. In a harmonized province the entire 13% paid on business inputs is recoverable through input tax credits, not just the federal 5%. A Mississauga business buying raw materials, machinery, racking, vehicles, fuel or professional services carries no embedded provincial sales tax in its cost base. That is genuinely different from operating in a province that runs a separate retail sales tax, where the provincial layer sticks to every input and quietly compresses margin. The rate and its composition are tabled with the source on the Ontario tax facts page.

Imports: the tax paid at the border

Mississauga is home to Canada’s largest airport and a large logistics sector, and many of the small companies we work with bring goods in from outside the country. Commercial imports generally attract GST, or the HST equivalent, at the border, usually paid through a customs broker along with any duty. That tax is not a cost of the goods. It is an input tax credit, claimed on your return from the customs accounting documents, provided the importer of record is your registered business.

Two problems recur. The first is that the broker’s invoice bundles duty, brokerage fees, the tax on the goods and the tax on the broker’s own fees into one total, and the whole amount is posted to cost of goods. The second is that the import was declared under the wrong business number, or under the supplier’s, so the credit cannot be supported. Both are fixed at the bookkeeping stage by splitting each customs entry properly and keeping the supporting documents with the return. A credit you cannot document is a credit the CRA can deny on review.

Exports and zero-rated sales

Goods sold and shipped to customers outside Canada are generally zero-rated, which means HST is charged at 0% rather than 13%. A zero-rated sale is still a taxable supply, so you keep claiming input tax credits on the costs that went into it. For a Mississauga manufacturer or wholesaler with significant export sales, that can turn the return into a regular refund rather than a payment. Refund returns attract more scrutiny, and the CRA will want proof of export: shipping documents, bills of lading and the customer’s address outside Canada. Zero-rated is not the same as exempt; an exempt supply carries no tax and no credits. Zero-rated versus exempt and HST on exports cover the distinctions.

Sales to customers in other provinces follow the place-of-supply rules, which decide whether you charge 13%, 5% or another HST rate depending on where the goods are delivered or the service is used. A Mississauga business shipping to several provinces needs its invoicing system to apply the destination rate, not the Ontario rate by default.

The Quick Method arithmetic looks different at 13%

The Quick Method lets an eligible registrant remit a flat percentage of tax-included sales instead of tracking input tax credits on day-to-day operating purchases. You continue to charge customers the normal rate; what changes is how the remittance is calculated. There is also a credit on an initial portion of eligible supplies each year, which improves the arithmetic further for smaller registrants.

Whether it pays turns on a single question: how much tax do you actually pay on operating inputs? A service business with few purchases typically remits less under the Quick Method, because the credits it gives up are small. A Mississauga distributor or manufacturer with heavy purchases usually does worse, and a business with large zero-rated export sales generally does better on the regular method. Collecting 13% rather than 5% also changes the base the flat rate applies to, so an intuition formed in a GST-only province does not transfer. Our Quick Method guide works through it, and significant capital purchases are generally still claimable either way.

Related companies, and the election that stops tax circulating

Family businesses in Mississauga often grow into groups: an operating company, a holding company, and a property company that owns the plant or warehouse and charges rent to the operating company. Each intercompany charge normally carries HST, which the recipient then claims back. The tax nets to nothing across the group yet moves real cash between entities and across reporting periods.

Where the conditions are met, closely related corporations can elect to treat certain supplies between them as made for no consideration, which removes the tax from those intercompany charges. It is a filing with real eligibility requirements rather than a default, and it does not apply to every transaction between related parties. Our note on the election between related corporations sets out the conditions.

Filing frequency and instalments

The CRA assigns a reporting period based on your annual taxable sales: monthly, quarterly or annual. Smaller businesses can often choose to file more frequently than required, which suits an exporter in a regular refund position because the money comes back sooner. Annual filers whose net tax passes the threshold pay quarterly instalments through the year, which catches owners out when a growing business stays on an annual return. We review the period once a year against your actual numbers. Changing your filing frequency explains the options.

What is covered

• HST registration, or review of your current reporting period
• Returns prepared and filed on your assigned schedule
• Input tax credits claimed on the full 13%, including capital purchases
• Customs entries split so import GST/HST is claimed and duty is costed correctly
• Zero-rated export sales supported with the documents the CRA expects
• Quick Method modelled against the regular method with your actual numbers
• Returns reconciled to the sales ledger rather than to bank activity
• CRA correspondence and review requests handled for you

Remote, and there is no Mississauga office

The same service covers Brampton, Caledon, Toronto and the rest of Ontario. EverStone is a fully virtual CPA firm serving BC, Alberta, Ontario and Manitoba; there is no Mississauga office. Mississauga businesses are served entirely online, through email, video meetings, secure document exchange and e-signature. Sales tax work is a records-and-returns exercise, so nothing about it is improved by being in the same building.