Discount problem, magento ignores apply discount excluding tax

[jesuscampos]

Hi,

I have a discount catalog rule that apply a discount on some categories but the price produce is wrong. Magento are calculating the discount including tax but I need that the discount be calculated without tax. I already verify the option System -> Options -> Sales -> Tax -> Calculation -> Apply discount to prices: Excluding taxes but still the error.

Any tip? Thanks

Example: 

Product price: 32 (without tax)

Tax: 23%

Discount: 23%

Value expected: 32

Value calculated: 30.31

[heaven7]

Hello,

Are you applied rules on the admin panel?

Are you reindexed the price indexes?

Regards,