sales tax change mid transaction

Shopify Discussion
2

Hi @RGWELD ,

This issue with Shopify updating the tax amount after a customer has checked out is frustrating and understandably causing customer dissatisfaction. Here’s a concise breakdown of possible causes and solutions:

Possible Causes:

  1. Third-Party Apps: Sometimes, tax apps or third-party integrations can update the tax calculation after the transaction.
  2. Address Validation: Shopify may update tax rates if it receives updated address information post-checkout.
  3. Shopify Tax Calculation: Shopify’s tax engine could be recalculating taxes if there’s a delay or error in the initial calculation, possibly due to server-side issues.

Solutions:

  1. Audit Third-Party Apps: Check if any tax-related apps are integrated with your store and causing recalculations. Disable them temporarily to test.
  2. Manual Tax Override: If the issue persists, consider setting up manual tax rates for your state to avoid automatic updates.
  3. Clear Communication: Notify customers at checkout that taxes are estimated and may adjust slightly based on address validation, but that double-charging is not your intention.
  4. Shopify Support Escalation: Request to escalate the issue to a higher level of Shopify support or a technical specialist who can investigate the backend processes and resolve the problem.

If it resolves your issue, please mark my answer as a solution or if you still need assistance, let me know. Thank you.