Multiple Taxes Being Added

i have created a new zone. within the zone, i created a new tax rate. when i go to checkout, the tax being calculated appears to be that of my store's zone PLUS that of my billing/shipping zone (which is the newly created zone).

the two tax rates that i currently have established are different prioirties.

dont know how to fix this.

thanks for any insight.

Most likely one or both of your zones contain duplicate regions in their zone definitions details settings.