How to track the residency status of a Party for EBTax

Dear All

We  need to derive tax rules for service items based on the residency status of the party. residency status is determined based on the below logic.

if the country of registration is not the transacting cuntry, then the party is non resident. or in other words if the customer is registered in nigeria and transacting in south africa, he is non resident for south africa.and the transaction will be zero rated.

how will we configure the residency status based on the country of registrations?

any ideas are welcomed