## Zoho Commerce Help Documentation Index Access the complete documentation index at: https://www.zoho.com/en-us/commerce/kb/llms.txt Use this file to discover all available documentation pages before proceeding. [Back](../) # Why do issues occur in tax calculation? ![](/commerce/images/ue-resources/llm-utility-menu/sparkle-ai.svg) Explore With AI ![](/commerce/images/ue-resources/llm-utility-menu/dd-arrow.svg) * [Open in ChatGPT (opens in new tab)](https://chatgpt.com/?prompt=Analyze+the+content+of+https%3A%2F%2Fwww.zoho.com%2Fen-us%2Fcommerce%2Fkb%2Ftaxes%2Fissues-in-tax-calculation%2F+and+understand+it+thoroughly+so+I+can+ask+questions+about+it.) * [Open in Claude (opens in new tab)](https://claude.ai/new?q=Analyze+the+content+of+https%3A%2F%2Fwww.zoho.com%2Fen-us%2Fcommerce%2Fkb%2Ftaxes%2Fissues-in-tax-calculation%2F+and+understand+it+thoroughly+so+I+can+ask+questions+about+it.) * ![Copy for LLM](/commerce/images/ue-resources/llm-utility-menu/copy.svg) Copy for LLM * [![View as Markdown](/commerce/images/ue-resources/llm-utility-menu/md.svg) View as Markdown (opens in new tab)](/en-us/commerce/kb/taxes/issues-in-tax-calculation/index.md) Always check whether you have configured Discount Before Tax or Discount After Tax in the inventory settings. You will need to log in to Zoho Inventory to verify this and make changes accordingly.