How to display discounted amount including tax

[biltong]

Hi,

How do I change the front-end product and cart display to show the Discount amount including Tax?

E.g. instead of displaying this:

Base price with tax: £28.00
Sales price: £16.80
Discount: £9.33

I want it to display this:

Base price with tax: £28.00
Sales price: £16.80
Discount: £11.20

Assuming tax of 20%.


Thanks

[Studio 42]

Have you check your price config ?