how to put GST on the invoice after discount

Retired Boards Appdev Store Design

Topic summary

A Shopify store owner in India is encountering an issue with GST (Goods and Services Tax) calculation on invoices after applying discount codes.

The Problem:

  • Products are priced at INR 259 (including 18% GST)
  • When a discount code of INR 708 is applied, the generated invoice only shows the base price and then the discount
  • The GST amount is not being included or displayed correctly on the invoice

Current Situation:

  • The store owner is using an order printer app to generate invoices
  • They consulted a Shopify expert who suggested editing the template
  • However, the store owner has no coding knowledge and is unable to make the necessary template modifications

Status: The issue remains unresolved, with the store owner seeking guidance on how to properly display GST on invoices after discounts are applied.

Summarized with AI on November 18. AI used: claude-sonnet-4-5-20250929.
1

hi, i do not know how to code.
i am making a website of my own in India in Shopify platform. it has taxes like GST. the problem that i am facing is as under-

a product is being sell at INR 259 (including 18% GST) i have created a discount code of INR 708. So, whenever a customer purchases a product of INR 259, the invoice that is generated does not include the GST price in it. it only shows the base price and then the discount. i am using order printer app for the same. I asked the shopify expert and he told me to edit the template. i am unable to do so. can you help?