On the web
In your store admin, go to Markets and open the market.
Open the Tax tab and select the Zones section.
Select New tax zone, name it, and pick the countries or regions it covers — regions another zone already claims are shown as taken.
Save. Return to the Tax tab, open Tax rates, and select Manage tax rates to configure rates for this zone.
You can create the country zone or the state-specific zone first. A country that already has a country zone remains available so you can select unclaimed states or provinces. Select at least one region before saving another zone for that country. Regions already assigned to another state-specific zone are unavailable.
Creating a default zone
Turn on the default switch instead of picking regions — the default zone covers every address the other zones don't, so it takes no country list of its own. A market keeps at most one default zone: making a zone the default un-defaults the previous one.
Setting up the business exemption
In the zone form, turn on the business tax exemption and choose which tax ID the zone accepts — an EU VAT number, an Indian GSTIN, a custom ID with your own label, and so on. Then choose the effect: exempt removes the tax, while invoice only keeps the tax and marks the order for a business invoice. You can also set the text shown at checkout next to the tax ID field. The checkout entry is collected for verification; it does not approve its own exemption.
Deleting a zone
Deleting a zone removes its rates with it. A remaining state or province zone applies first, then a matching whole-country zone, then the market's default zone. If no remaining zone covers the address, no zone tax is charged. The default zone itself can't be deleted while it is the default — make another zone the default first, or edit the zone instead.
On mobile
In the Tringify app, open Markets, choose the market, and then go to Tax > Zones. You can create, edit, export, and delete tax zones.