Show prices including VAT, then VAT price in cart

[dancingkazzaf]

Hi,
I am using VM 3.0.9, Joomla 3.4.1
I am trying to show this combination of pricing on the site and I just can't figure out the combination of variants in the back end.

The front end products must just show the final price including VAT (eg £12)
The cart should show the final price, the amount of VAT they are paying, then the total price which would be the same as the final price (£12, VAT £2, £12)
(So the actual price before tax is £10 but that doesn't need to be shown at all.)
I have set up a Tax rule, but whatever I choose it either adds the price on in the cart or minuses it which I don't want. I have tried + or - 0 even. Just can't work it out.
Can anyone help?
Thanks

[AH]

And make sure you have price display and tax settings correct in the admin

I have posted images of my pricing and tax settings - these may work for your needs

The front end products must just show the final price including VAT (eg £12)

You need to do an template override to the prices sublayout display as, when you enable tax price displays (which is required to show tax in cart), they show up on the product which you do not want