Need to Identify Whether Supplier Quoted Prices Include Taxes or Not in Negotiations

Summary:

Need to identify whether supplier quoted prices in Oracle Sourcing include or exclude taxes (for example, ICMS/VAT).

Content (please ensure you mask any confidential information):

In Oracle Sourcing, there is currently no option to specify if the prices entered by suppliers include or exclude taxes.
Suppliers may submit total amounts with or without tax, but buyers cannot confirm how each supplier calculated the price.

This lack of control makes it difficult to compare offers accurately and to evaluate the real net cost per item, especially when suppliers operate under different tax regimes.
The business need is to add a simple indicator or checkbox in the supplier response section, allowing the supplier to declare whether the quoted price is tax-inclusive or tax-exclusive.