On July 4th, 2024, the Binh Duong Provincial Tax Department issued Official Letter No. 18137/CTHN-TTHT, accordingly:
In cases where the trade discount is based on the quantity or sales of goods and services, the discount amount for goods already sold is calculated and adjusted on the last or the next period sales invoice of goods and services. In cases where the discount amount is issued at the end of the sales discount program (period), an adjustment invoice
will be issued with a list of invoice numbers to be adjusted, amount, and adjusted tax amount. On the adjusted invoice, the Company does not record a negative number because it is not a case of an invoice error.
Regarding documents recording for the trade discount amount: the Company based on the adjustment invoice, with both the seller and buyer declaring adjustments to sales revenue, purchase revenue, output tax, and input tax.
