If you set it to 17.5 VAT will be charged at 17.5% of (presumably) the shipping costs, if you set it to prorata it will be charged as a percentage of the order value.
I think that it is normal to set it to prorata but am definately not an expert on VAT so can't give any solid advice.
Regards,
I think that it is normal to set it to prorata but am definately not an expert on VAT so can't give any solid advice.
Regards,
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