The Sales Tax That Never Comes Back
GST and PST are spoken about together and behave nothing alike. GST flows through your business: you collect it, claim back what you paid on your own purchases, and remit the difference. PST is a cost. What you pay stays paid, and what you should have charged and did not comes out of your margin instead of your customer’s pocket.
That asymmetry is why PST deserves more attention than it gets. We work out what is taxable in your business, what you can buy exempt, calculate each period, and file with the province on its own schedule.
It also affects the numbers further up. PST you pay is an expense rather than something recoverable, so it lands in the results your corporate tax return is calculated from. Posting it as if it were coming back understates your costs all year and overstates your profit at the end.
Nothing comes back, so the only saving is not paying it
Because there is no credit to claim afterwards, everything worth doing about PST happens at the moment of purchase. That is where the exemptions live and where most businesses leave money behind.
Goods you buy to resell can be purchased exempt using your PST number, and manufacturers can buy qualifying production machinery and equipment exempt too. Businesses miss these routinely, because nobody told them the exemption existed and the supplier charged tax by default. We check what you buy against what you are entitled to buy exempt, then make sure your suppliers have what they need on file. A supplier’s default setting is not a ruling.
Working out what you actually have to charge
The Dominion Triangle in Port Coquitlam is one of the largest regional retail hubs in the Lower Mainland, now filling in around the edges with light-industrial space. That mix is where the question gets difficult, because one business in a district like that will often sell a good, install it, and service it later.
Those three do not carry the same treatment. Goods are generally taxable, most professional services are not, and services performed on taxable goods are. Software has its own rules and so does delivery. Owners who assume the whole invoice follows one rule are wrong in one direction or the other. We go through what your business sells, line by line, and set the tax codes so the answer is built into the invoice.
Two sales taxes that share nothing but your invoices
| GST/HST | BC PST |
|---|---|
| Federal, filed with the CRA | Provincial, filed through eTaxBC |
| Tax you pay comes back as credits | Tax you pay is gone for good |
| Reporting period set by the CRA | Reporting period set separately |
They also disagree on what is taxable in the first place, so one sale can carry one and not the other. Running them as a single job is the only sensible way to handle it, because the same invoice feeds both. We calculate and file your PST alongside your GST/HST returns from the same reconciled books, on each one’s schedule, so a change in what you sell is reflected in both at once instead of remembered for one and forgotten for the other.
Growing into another province brings its own registration
Saskatchewan and Manitoba run their own provincial sales tax, and neither cares that you already file in BC. Sell into them with any regularity and you can pick up an obligation to register and file there, separately.
This catches businesses that grew into online or out-of-province sales gradually, where no single month felt like the moment anything changed. We handle BC, Saskatchewan, and Manitoba, so if your customer base is drifting east it gets flagged as it happens. Hearing about a registration obligation from the province two years after it started is the expensive version of this.
PST Return Filing FAQs
It depends entirely on which services. Most professional services have historically sat outside PST, while services performed on taxable goods, such as repair, maintenance, and installation, are taxable. Businesses that sell only exempt services may not need to register at all, and businesses that assumed they were in that group have frequently turned out not to be.
No, and this is the single biggest difference between PST and GST. There is no credit mechanism. PST you pay on supplies, equipment, and services is a permanent cost that sits in your expenses. The only relief available is an exemption at the point of purchase, which is why using the exemptions you already qualify for matters so much.
BC PST applies to goods delivered into BC, and other provinces apply the same logic in reverse. Saskatchewan and Manitoba both operate their own provincial sales tax with their own registration rules, and selling into them regularly can create an obligation to register there. We handle BC, Saskatchewan, and Manitoba filings, so this stays one conversation rather than three.
It needs correcting, and the direction matters. Tax you collected has to be remitted or properly refunded to the customer, since keeping it is not an option. Tax you charged on exempt sales usually means credit notes and a difficult call with the customers involved. Both are more manageable the earlier they are found, which is why we review what you are charging rather than simply totalling it.
Through eTaxBC, on the frequency the province assigns you, which is separate from and often out of step with your GST/HST periods. We calculate what is due from your books, file it, and keep the confirmation. You do not need a login for the provincial system, though you can have one if you want your own visibility into it.
