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Small and medium business | Business Central, N...
Suggested Answer

GST calculation - Customer type "SEZ Development"

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Dear Experts,

In a Blanket Sales Order, when the Customer Type is SEZ Development and Price Inclusive of Tax is enabled, GST is calculated correctly. However, when I create a Sales Order from the Blanket Sales Order, the GST amount is removed and merged into the Base Amount. For example, if I enter ₹1,000 as the Unit Price Incl. of Tax with the boolean enabled, the system correctly calculates the Unit Price Excl. of Tax (without GST) as approximately ₹820 in the Blanket Sales Order.

This works correctly at the Blanket Sales Order level. But in the Sales Order, both Unit Price Incl. of Tax and Unit Price Excl. of Tax appear as ₹1,000, and even the Use Case changes automatically. 

I want the same flow to be maintained from Blanket Sales Order → Sales Order → Posted Sales Shipment → Sales Invoice (Get Shipment Lines).

Request to guide me.

I have the same question (0)
  • Suggested answer
    Dhiren Nagar Profile Picture
    2,876 Super User 2026 Season 1 on at
    Hi,
     
    I think this is a issue from Microsoft side regarding the Use cases. Indian Localization has many bugs.
     
    The ideal solution will be to create/Replicate the workflow from Blanket Sales Order to Sales Order and test it to get proper result.
     
    Regards,
    Dhiren.
  • Suggested answer
    Assisted by AI
    OussamaSabbouh Profile Picture
    11,401 Super User 2026 Season 1 on at
    Hello ,
    This is standard Indian GST behavior in Business Central: Blanket Sales Orders are only planning documents, so GST (including Price Inclusive of Tax and SEZ use cases) is recalculated when a Sales Order is created. For SEZ Development customers, GST becomes zero-rated at Sales Order level, so BC automatically changes the GST Use Case and treats the entered price as exclusive, which is why ₹1,000 shows as both Incl. and Excl. and the GST amount disappears. The GST calculation shown on the Blanket Sales Order is informational only and is not carried forward. There is no standard setup to keep the same tax flow from Blanket → Sales Order → Shipment → Invoice; to keep consistency, you must either avoid Blanket Orders or customize the Blanket-to-Order conversion logic.
    Regards,
    Oussama Sabbouh
  • Suggested answer
    YUN ZHU Profile Picture
    98,266 Super User 2026 Season 1 on at
    You can submit this idea to Microsoft.
    Missing a feature? Post or vote for ideas on: aka.ms/BCIdeas
     
    Thanks.
    ZHU

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