Carrier Shipping Rate Calls: Include call for TNT

Shopify Discussion
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1

  • Title

    :Add UPS Time in Transit (TNT) to carrier-calculated rate API call

  • Problem

    : Shopify’s UPS rate call omits TNT parameters, so transit times don’t display at checkout for UPS carrier-calculated rates

  • Impact

    : Customers can’t see UPS delivery speed and compare with Shopify USPS TNT, leading to checkout friction and rate selection confusion

  • Request

    : Include a TNT request in the UPS rate API call so transit times surface natively at checkout

3

This is great suggestion that addresses a real checkout usability gap. Displaying transit times alongside UPS carrier-calculated rates would help customers make more informed shipping decisions instead of choosing based on price alone.

Since Shopify already surfaces estimated delivery times for USPS in some cases, extending the UPS rate request to include Time in Transit (TNT) data would create a more consistent checkout experience. It would reduce customer uncertainty, improve rate selection, and potentially increase conversion by giving shoppers the context they need without requiring third-party workarounds. This would be a valuable enhancement for both merchants and customers.