Discount applied at checkout that doesn't exist

Topic summary

  • Shopify store on the Dawn theme using a build-a-box app showed an unexpected discount at checkout. Screenshots depict line-through prices and an automatic “discount” before a shipping address is entered.

  • After entering an address, prices returned to their correct amounts. The app developer noted they don’t have checkout access, suggesting the issue wasn’t caused by the app.

  • Only two intended discounts were active: 10% off for new customers and free shipping over $100. No other discount codes or scripts were configured.

  • Resolution from Shopify Support: in Tax settings, uncheck “Include taxes” (taxes in prices). This setting had been causing the anomaly in how prices displayed prior to address entry, creating the appearance of a discount/strikethrough.

  • Outcome: Strikethroughs and price adjustments disappeared, and checkout totals remained consistent. No theme code or checkout scripting changes were required. Status: resolved.

Summarized with AI on December 27. AI used: gpt-5.

I’m on Dawn Theme and have a build a box app but I’m running into a strange discount applied at checkout (developer said they do not have access to checkout and can’t see why this is happening)

Then when I input an address, prices change back to what they should be.

Help! How do I not have these strikethroughs and weird price adjustments? I only have 2 discounts saved - 1) 10% off for new customers and 2) Free Shipping over $100.

NVM - Support helped - I had to uncheck “include taxes” in Tax settings.