Hi

Thanks for your input.  Is there anyway in which we can store the Tax value in 3 or 4 decimals.  Because when we split 3.33 Tax into CGST, SGST, then 3.33/2 comes to Rs. 1.665/-.

Regards

Hi,

What’s Happening in Your Example

       * Product Selling Price (SP) = ₹70

       * GST 5% is included in the price (Tax-Included method).

       * Taxable Base = ₹66.66 (approx).

       * Tax = ₹3.34 (split into CGST ₹1.67 + SGST ₹1.67).

- On each line, Odoo is rounding per line, not at the global report level.

Now, when you sum over 12 transactions:

     * Odoo way (line-level rounding):

                - Taxable = 12 × 66.66 = ₹799.92

                - Tax = 12 × 3.34 = ₹40.08

      * Manual way (global rounding):

                    - Tax = 799.92 × 5% = ₹39.996 → 40.00

So the difference of 0.08 arises because Odoo rounds per line, while your accountants are rounding on the total.

Odoo is mathematically correct. It’s just following its default rounding method:

    By default, Odoo rounds at line level (per invoice line).

    This is standard accounting practice in most countries, but in India GST returns are usually computed on the total, not per line.

So Odoo’s result differs slightly from what your accountants expect.

Global Rounding (Preferred for GST Filing in India)

    You can configure "Tax Rounding Method" in Odoo:

        Go to Invoicing → Configuration → Settings → Taxes → Tax Calculation Rounding Method

        Options:

            Round per line (default, what you’re seeing).

            Round globally (round at invoice total).

    If you set Round Globally, Odoo will compute the tax on the invoice total instead of per line.

    In your example, it would show:

                   Taxable = ₹799.92

                    Tax = ₹39.996 → ₹40.00 (instead of 40.08).

Hope it helps