Manual Tax Engine

The Manual Tax Engine plugin lets you define your own tax rates without relying on any external service. You configure a global default rate as a fallback, then add per-country rules with one or more named rates each. Rates can be a percentage of the order amount or a fixed currency amount.

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Opening the settings

Navigate to Settings > Tax Engines in your admin panel, then click Manual Tax.

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Default tax rate

The Default Tax Rate section at the top of the page applies a fallback rate to any customer whose billing address does not match a country rule.

• Use the toggle to enable or disable the default rate entirely.
• Enter the rate value in the Rate field. The rate is a percentage by default — click the % button to switch to a fixed currency amount instead.

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Country rules

The Rules section lists per-country tax rules. Each rule overrides the default rate for customers billing from that country and can contain multiple named rates that are added together.

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Adding a rule

1. Click + Add rule.
2. Select a country from the dropdown.
3. If the selected country has subdivisions (states or provinces), an additional Subdivision dropdown appears. Selecting a subdivision is optional — leave it blank to apply the rule to the entire country, or select a specific state/province to target that subdivision only.
4. Click Add rule to confirm.

The new rule appears in the rules list. Click on it to open the rule and add tax rates.

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Adding rates to a rule

Each country rule can have one or more named rates:

1. Click on a country rule to open it.
2. Click + Add rate.
3. Enter a name (shown to the customer, e.g. “VAT”) and a value (percentage or fixed amount).
4. Repeat for any additional rates.

Multiple rates within a rule are added together. For example, a rule with 18% VAT and 14% Custom Handling Fee results in a combined 32% tax for customers in that country.

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Zero-rating a country

To explicitly exempt a country from tax, add a rule for that country and set the rate value to 0. This ensures the default rate does not apply to customers from that country.

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Saving changes

Click Save changes at the bottom of the page to apply your configuration.

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Testing

After configuring your rules, create a test purchase using a billing address that matches each of your configured countries. Verify that the correct tax rates appear in the checkout summary.

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Need Help?

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