Tax on Paid Subscritions?

[SweDev]

Hi
Just wonder, saw it was possible to add tax in Paid Subscriptions to my subscriptions. Got a couple of questions on that;

- Do I have to add tax to my subscriptions?

And if so;
- My members will come from all over the world, which country's / states tax will be applied?
- Is this handled and reported automatically by PayPal?

Also, Sweden has a tax agreement with, among other countries, US.

Just wonder how I shall handle all of this. BTW: Need to know before friday (when we open officially and starts taking payments).

Thanks :-)