Paypal express checkout removes the vat from the total when on order summary

Help.....:no:
I'm currently running version 1.3.9h. I installed PayPal Express Checkout on to our website with ease at the beginning of November 2012, it's been working perfectly. However, yesterday we had complaints saying that when they clicked on Express Checkout the order summary page then removed the vat from invoice total amount! Also it doesn't display any details in the order summary! Now what has changed? I have changed nothing on our admin? PayPal suggest its a problem with Zencart? I've un-installed and re-installed Express Checkout from Zencart but still the same...
I would really like to keep using Express checkout as I think it makes the whole checkout process so much quicker and stress free for the end user. However, I've had to remove this function from our website until I can resolve this issue
Any ideas, suggestions would be grateful?
Thanks

Zen Cart's pricing is always based on pre-tax prices. Tax is added based on the customer's address/zone. Tax is added AFTER Zen Cart has the customer's address, and if the customer starts checkout without having first given their address, Zen Cart can't correctly assess tax in order to pass it along to PayPal. It's only after the customer has provided an address that it will include applicable taxes in the final payment amounts.

Hey there, if it was working and then suddenly stopped working then something has changed, if not in the admin (are you 100% sure nothing changed) then somewhere in the code. If not then it wasn't working in the first place! Mind you it was very kind of your customers to tell you that VAT was being removed, are you sure it was on all the previous orders?

It's hard to guess whats wrong without seeing some code, can you post the url for your site and ppl can take a look?

Thanks guys for you quick response. First off Barricades I can understand your point, yes we are lucky customers were letting us know. It was adding the tax previously as we have to cross check the retail prices. Why is it not now is the key...my IT have said they haven't changed anything...Very Frustrating.
DrByte, I totally get what your saying regarding adding the tax on after they have registered, At what stage then would they see the correct vat inclusive price?
If you want to take a look at my website it's tyreandgo.co.uk, the only thing is I've disabled PayPal Express until I'm confident it's performing correctly again..I can re-install this quickly if you wanted to have a look for yourself?
once again thanks for your help..

G'day,

We've just started to encounter this problem suddenly in the last few days. Maybe the settings for how Zen Cart handles taxes need to be altered, or new settings added to handle various tax scenarios.

Here in Australia, the law requires us to show prices inc tax to Australians. Only when the goods are being shipped overseas does the GST tax get taken off.

Thus it would make sense for Zen Cart to be able to be told that this is what has to happen rather than Zen Cart simply assuming the opposite.

Best regards, Lloyd Borrett.