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Taxes not calculating automatically in Sales Order after changing Customer

  • January 8, 2026
  • 6 replies
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Hi everyone,

I'm having an issue with automatic tax calculation in Sales Orders (SO301000).

The scenario: When I create a new Sales Order and select or change a Customer, the Tax Zone is correctly pulled from the Customer profile (Shipping tab) and updated on the Financial tab of the Order. However, the Taxes tab remains empty.
 

Best answer by Laura03

Hello,

Please connect all Tax ID’s except 0% Exempt to your Taxable tax category in Tax Category screen.

Then connect each Tax to the correct zone in Tax Zones screen. 

Laura

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6 replies

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Have you checked the Item. Is it taxable?

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Forum|alt.badge.img+2

Hello ​@bihalivan15 

Is this tax configuration setup natively in Acumatica or utilizing an External Tax Provider?

Amaan

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  • Author
  • Captain I
  • January 8, 2026

Hello ​@bihalivan15 

Is this tax configuration setup natively in Acumatica or utilizing an External Tax Provider?

Amaan

natively in Acumatica

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Hello ​@bihalivan15 

I would suggest checking the following links:

Tax Zone > Tax Category> Tax ID

is there an error if a Tax ID is manually added to the document?

Amaan

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Laura03
Captain II
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  • Captain II
  • Answer
  • January 8, 2026

Hello,

Please connect all Tax ID’s except 0% Exempt to your Taxable tax category in Tax Category screen.

Then connect each Tax to the correct zone in Tax Zones screen. 

Laura

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mohammadnawaz51
Varsity I
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​@bihalivan15 Do you have any customizations on this? 

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