Inventory Software in Canada: Tax, Currency and Compliance Considerations

Sales tax: GST, HST and PST

• HST provinces (Ontario, the Atlantic provinces) charge one combined rate; GST-plus-PST provinces (BC, Saskatchewan, Manitoba) and Quebec's QST need two lines.
• Tax depends on the destination for shipped goods, so the software needs place-of-supply logic, not one flat rate.
• Some products are zero-rated or exempt; the item master needs a tax category, not a tax rate.
• Reporting has to produce input tax credit totals your accountant can reconcile.

Buying in USD, selling in CAD

Most Canadian retailers and distributors buy at least some stock in US dollars. The software needs to record the purchase in the supplier's currency, convert at the actual rate paid, and carry the CAD cost into margin reporting. Tools that store a single cost field in one currency quietly misstate margins every time the exchange rate moves.

Landed cost: freight, duty and brokerage

For imported goods, the true unit cost includes freight, customs duty by tariff classification, brokerage and sometimes excise. Software that supports landed cost allocation lets you spread those charges across a shipment so pricing and margin decisions are based on real numbers. This is the feature most often missing in the cheaper tools.

Tools that handle Canada reasonably

Zoho Inventory, Cin7 Core and inFlow handle Canadian tax and multi-currency with varying depth; QuickBooks Online's inventory covers simple cases; Shopify's tax engine is solid for sales but weak for purchasing. Katana and MRPeasy serve small manufacturers. Verify each against your provinces and your import volume rather than trusting a feature list.

When custom inventory software makes sense in Canada

• Your tax situation is unusual: mixed exempt and taxable products, multiple provinces, or First Nations exemptions.
• Import volume is high enough that landed cost accuracy is a competitive advantage.
• Inventory is linked to something else you run in custom software: jobs, rentals, service, or regulated tracking.
• Existing tools force workarounds in more than one of tax, currency and landed cost.

A custom inventory module integrated with your accounting system, with tax and landed cost done properly, typically starts in the tens of thousands of dollars and is quoted fixed-scope.

A checklist before you sign

• Show me a sale shipped to BC and one to Ontario from the same warehouse.
• Show me a USD purchase order landing into CAD stock cost.
• Show me duty and freight allocated across a shipment.
• Show me the GST/HST report my accountant will file.
• Show me where the data is stored.