How can I resolve the 'payment couldn't be processed' error on my website?

Topic summary

Issue: Customers encounter the checkout error “Your payment couldn’t be processed because your order total has changed. Check your order total and try again.”

Context: Multiple merchants report the same problem affecting payments at checkout. No specific store settings or recent changes were detailed.

Likely cause: A support rep suggests it’s related to international selling via Shopify Markets and taxes. Markets can adjust totals (e.g., tax, currency, shipping) during checkout, causing mismatches that trigger the error.

Action recommended: Contact Shopify Support directly via the Help Center for an account-specific review, as the Community cannot access store details. Support can verify the root cause and apply the necessary fix.

Status: Unresolved within the thread. No confirmed solution shared.

Open questions: What precise configuration (tax, shipping, currency, Markets settings) is changing the order total and how to prevent recalculation during payment.

Summarized with AI on January 3. AI used: gpt-5.

Your payment couldn’t be processed because your order total has changed. Check your order total and try again.

Is The error my customers are getting I don’t kno how to fix it please help.

How did you fix it?? Our customers keep getting this error as well.

Hi @paragxshah ,

Thank you for reaching out to the Community! I’d be happy to provide some assistance with this request, to ensure it gets resolved.

As this error is likely related to selling internationally with Shopify Markets and taxes, I’d encourage you to connect with us directly. This will allow our support team to take a closer look, as I wouldn’t have access to any account specific information through the Community. They will be able to confirm the error and ensure it gets resolved.

Please let me know if you have any other questions.