I know that displaying a product price including/excluding tax can be set globally under System->Configuration->Sales->Tax. Is there a way to be more specific, depending on a Customer Group?
Generally I want all prices to display including Tax, but have a Trade Group that need to show prices excluding tax.
I am very green to Magento and by no means 'good' at customising xml, so an idiots guide would be appreciated.
Thanks
Best Answer
Check following function
Mage_Tax_Model_Config class::priceIncludesTax();
this function returns true and false base on system -> config -> tax ->calculation setting -> Catalog Prices.
you can add condition here by customer group(do not change core file move to local first).