How To Setup Tax in Odoo 18?

Setup tax in Odoo properly ensures automated tax calculations on customer invoices, vendor bills, and point-of-sale transactions, maintaining compliance with local tax regulations (such as GST in India).

Key Configuration Steps to setup tax

1. Accessing Tax Management

  • Go to Accounting / Invoicing → Configuration → Taxes.
  • Click New to set up a custom tax rule or select an existing tax to modify.

2. Core Settings

  • Tax Name: Enter a clear descriptive title (e.g., CGST 9%, SGST 9%, or IGST 18%).
  • Tax Computation: Choose how the tax amount is calculated:
    • Percentage of Price (most common)
    • Fixed Amount
    • Percentage of Price Tax Included
    • Group of Taxes (combining multiple taxes into a single line item, such as CGST + SGST)
  • Tax Type / Scope: Define whether the tax applies to Sales, Purchases, or None.

3. Tax Details & Accounting Mapping

  • Amount / Rate: Specify the percentage or fixed value.
  • Active Status: Enable or disable taxes based on current operational requirements.
  • Account Mapping: Link appropriate Tax Received (for sales) and Tax Paid (for purchases) accounts from your Chart of Accounts.

4. Advanced & Localized Rules (India GST)

  • Set up GST grids and tax tags for automated statutory returns reporting.
  • Configure tax inclusions/exclusions on sales line items to control whether tax is added on top of base prices or included within listed prices.
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