khards

After some playing about I can confirm that the shipping tax is not calculated correctly when using the weight based shipping plugin, however it is calculated correctly when I uninstall it and use standard shipping.

It seems that this plugin applies the tax rate without checking the cart items to see if the tax is applicable.

Test cases:

• Cart with no taxable items (or zero rate tax) there should be no shipping tax
• Cart with 1 or more taxable items and 0 or more non-taxable (or zero rate) items, tax should pply.

How it currently works:

If shipping is taxable tax is applied, if shipping has zero rate tax then zero rate is applied. The contents of the cart are not considered during calculation.

I’ll make a patch to solve this and share it with you