Display Pricing - Tax Inclusive

Hello

I am from Australia, and our tax (GST) is usually inclusive of a price. I would like to know if its possible to show this in OpenCart. For example, in the category pages, you would see:

Price (Inc GST): $49.95

Then in the cart, you would see:

Product Price
xxxxxx $49.95
xxxxxx $29.95
xxxxxx $24.95

TAX (Inc) $10.48
TOTAL $104.85

Most billing systems I have used are able to calculate inclusive tax automatically. Can someone help with this?

Thanks

I have the same problem, I have no idea how to change it D: