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# Method name: calculateTax(options: CalculateTaxOptions)

# Method package: wixBillingV2

# Method menu location: wixBillingV2 --> taxCalculation --> calculateTax

# Method Link: https://dev.wix.com/docs/velo/apis/wix-billing-v2/tax-calculation/calculate-tax.md

# Method Description:

Calculates tax for the provided line items.

Tax is calculated for each line item based on the tax region (see TaxRegions API) that corresponds to the address provided in `lineItems.addressIndex` and the tax group (see TaxGroups API) in `taxGroupId`. If no tax region is found for the line item's address then no tax will be calculated for this line item. If no tax group with that `taxGroupId` is found then the default tax group is used to calculate tax. To check the default tax groups, use `listDefaultTaxGroups()` in the TaxGroups API.

The tax is calculated by a tax calculator app installed on the site.
Use `listTaxCalculators()` to see which tax calculators are available. To provide your own tax calculations, use the Tax Calculation service plugin.

The breakdown of calculated tax returned, includes:
+ `taxSummary`: The overall total tax calculated.
+ `taxSummary.aggregatedTaxBreakdown`: The total tax calculated for each jurisdiction.
+ `lineItemTaxDetails.taxSummary`: The total tax calculated for each line item.
+ `lineItemTaxDetails.taxBreakdown`: The tax calculated for each line item in each jurisdiction.



# Method Code Examples:

*** Note: do not assume any prop names or enum values other than the ones in the example.

## calculateTax example

```javascript
import { taxCalculation } from 'wix-billing.v2';

async function calculateTax(options) {
  try {
    const result = await taxCalculation.calculateTax(options);
    return result;
  } catch (error) {
    console.error(error);
    // Handle the error
  }
}

```

## calculateTax example for exporting from backend code

```javascript
import { taxCalculation } from 'wix-billing.v2';
import { webMethod, Permissions } from 'wix-web-module';

export const calculateTax = webMethod(
  Permissions.Anyone,
  async (options) => {
    try {
      const result = await taxCalculation.calculateTax(options);
      return result;
    } catch (error) {
      console.error(error);
      // Handle the error
    }
  }
);

```

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