Main issue: Connecting a Canada Post account to Shopify only displays negotiated rates at checkout; labels bought in Shopify use Shopify’s rates/account and do not contribute to a merchant’s Canada Post discount tiers. Merchants request that labels be purchased under their own Canada Post accounts.
Shopify response: Feedback forwarded; no timeline or commitment. “Carrier-calculated shipping” (CCS) shows your rates at checkout, but label purchasing still uses Shopify Shipping. Earlier guidance said CCS could be added to standard plans for $20/month or free on annual billing, but a 2023 report says this is no longer available and requires upgrading to a higher plan (and possibly paying the add-on).
Workarounds adopted: Third‑party apps that buy labels on your Canada Post account so shipments count toward tiers:
Other concerns: Taxes at checkout (HST/PST) appear misapplied for interprovincial orders; Shopify bills labels in USD; rate parity varies by plan.
Status: Unresolved. Merchants rely on apps; plan/CCS availability remains inconsistent.
I’m currently purchasing labels with Canada Post in commercial tier 8, and using shipstation integration with Shopify.
Jump into shipstation, refresh it, print your labels and it automatically updates and closes out the Shopify order.
All you have to do is remember to do your end of day every day or they (Canada Post) charge you $1 per package that you forget to do end of day for.