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medusa-store/www/apps/docs/content/references/tax/interfaces/tax.ITaxService.mdx
2024-01-22 18:38:35 +01:00

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---
displayed_sidebar: modules
---
import ParameterTypes from "@site/src/components/ParameterTypes"
# ITaxService
## Overview
A tax provider is used to retrieve the tax lines in a cart. The Medusa backend provides a default `system` provider. You can create your own tax provider,
either in a plugin or directly in your Medusa backend, then use it in any region.
A tax provider class is defined in a TypeScript or JavaScript file under the `src/services` directory and the class must extend the
`AbstractTaxService` class imported from `@medusajs/medusa`. The file's name is the tax provider's class name as a slug and without the word `Service`.
For example, you can create the file `src/services/my-tax.ts` with the following content:
```ts title="src/services/my-tax.ts"
import {
AbstractTaxService,
ItemTaxCalculationLine,
ShippingTaxCalculationLine,
TaxCalculationContext,
} from "@medusajs/medusa"
import {
ProviderTaxLine,
} from "@medusajs/medusa/dist/types/tax-service"
class MyTaxService extends AbstractTaxService {
async getTaxLines(
itemLines: ItemTaxCalculationLine[],
shippingLines: ShippingTaxCalculationLine[],
context: TaxCalculationContext):
Promise<ProviderTaxLine[]> {
throw new Error("Method not implemented.")
}
}
export default MyTaxService
```
---
## Identifier Property
The `TaxProvider` entity has 2 properties: `identifier` and `is_installed`. The `identifier` property in the tax provider service is used when the tax provider is added to the database.
The value of this property is also used to reference the tax provider throughout Medusa. For example, it is used to [change the tax provider](https://docs.medusajs.com/modules/taxes/admin/manage-tax-settings#change-tax-provider-of-a-region) to a region.
```ts title="src/services/my-tax.ts"
class MyTaxService extends AbstractTaxService {
static identifier = "my-tax"
// ...
}
```
---
## Methods
### getTaxLines
This method is used when retrieving the tax lines for line items and shipping methods.
This occurs during checkout or when calculating totals for orders, swaps, or returns.
#### Example
An example of how this method is implemented in the `system` provider implemented in the Medusa backend:
```ts
// ...
class SystemTaxService extends AbstractTaxService {
// ...
async getTaxLines(
itemLines: ItemTaxCalculationLine[],
shippingLines: ShippingTaxCalculationLine[],
context: TaxCalculationContext
): Promise<ProviderTaxLine[]> {
let taxLines: ProviderTaxLine[] = itemLines.flatMap((l) => {
return l.rates.map((r) => ({
rate: r.rate || 0,
name: r.name,
code: r.code,
item_id: l.item.id,
}))
})
taxLines = taxLines.concat(
shippingLines.flatMap((l) => {
return l.rates.map((r) => ({
rate: r.rate || 0,
name: r.name,
code: r.code,
shipping_method_id: l.shipping_method.id,
}))
})
)
return taxLines
}
}
```
#### Parameters
<ParameterTypes parameters={[{"name":"itemLines","type":"[ItemTaxCalculationLine](../types/tax.ItemTaxCalculationLine.mdx)[]","description":"The line item lines to calculate taxes for.","optional":false,"defaultValue":"","expandable":false,"children":[{"name":"item","type":"[LineItem](../../entities/classes/entities.LineItem.mdx)","description":"The line item to calculate taxes for.","optional":false,"defaultValue":"","expandable":false,"children":[{"name":"adjustments","type":"[LineItemAdjustment](../../entities/classes/entities.LineItemAdjustment.mdx)[]","description":"The details of the item's adjustments, which are available when a discount is applied on the item.","optional":false,"defaultValue":"","expandable":true,"children":[]},{"name":"allow_discounts","type":"`boolean`","description":"Flag to indicate if the Line Item should be included when doing discount calculations.","optional":false,"defaultValue":"true","expandable":false,"children":[]},{"name":"cart","type":"[Cart](../../entities/classes/entities.Cart.mdx)","description":"The details of the cart that the line item may belongs to.","optional":false,"defaultValue":"","expandable":true,"children":[]},{"name":"cart_id","type":"`string`","description":"The ID of the cart that the line item may belongs to.","optional":false,"defaultValue":"","expandable":false,"children":[]},{"name":"claim_order","type":"[ClaimOrder](../../entities/classes/entities.ClaimOrder.mdx)","description":"The details of the claim that the line item may belong to.","optional":false,"defaultValue":"","expandable":true,"children":[]},{"name":"claim_order_id","type":"`string`","description":"The ID of the claim that the line item may belong to.","optional":false,"defaultValue":"","expandable":false,"children":[]},{"name":"created_at","type":"`Date`","description":"The date with timezone at which the resource was created.","optional":false,"defaultValue":"","expandable":false,"children":[]},{"name":"description","type":"`null` \\| `string`","description":"A more detailed description of the contents of the Line Item.","optional":false,"defaultValue":"","expandable":false,"children":[]},{"name":"fulfilled_quantity","type":"`null` \\| `number`","description":"The quantity of the Line Item that has been fulfilled.","optional":false,"defaultValue":"","expandable":false,"children":[]},{"name":"has_shipping","type":"`null` \\| `boolean`","description":"Flag to indicate if the Line Item has fulfillment associated with it.","optional":false,"defaultValue":"","expandable":false,"children":[]},{"name":"id","type":"`string`","description":"The line item's ID","optional":false,"defaultValue":"","expandable":false,"children":[]},{"name":"includes_tax","type":"`boolean`","description":"Indicates if the line item unit\\_price include tax","optional":false,"defaultValue":"false","expandable":false,"featureFlag":"tax_inclusive_pricing","children":[]},{"name":"is_giftcard","type":"`boolean`","description":"Flag to indicate if the Line Item is a Gift Card.","optional":false,"defaultValue":"false","expandable":false,"children":[]},{"name":"is_return","type":"`boolean`","description":"Is the item being returned","optional":false,"defaultValue":"false","expandable":false,"children":[]},{"name":"metadata","type":"`Record<string, unknown>`","description":"An optional key-value map with additional details","optional":false,"defaultValue":"","expandable":false,"children":[]},{"name":"order","type":"[Order](../../entities/classes/entities.Order.mdx)","description":"The details of the order that the line item may belongs to.","optional":false,"defaultValue":"","expandable":true,"children":[]},{"name":"order_id","type":"`null` \\| `string`","description":"The ID of the order that the line item may belongs to.","optional":false,"defaultValue":"","expandable":false,"children":[]},{"name":"product_id","type":"`null` \\| `string`","description":"","optional":false,"defaultValue":"","expandable":false,"children":[]},{"name":"quantity","type":"`number`","description":"The quantity of the content in the Line Item.","optional":false,"defaultValue":"","expandable":false,"children":[]},{"name":"returned_quantity","type":"`null` \\| `number`","description":"The quantity of the Line Item that has been returned.","optional":false,"defaultValue":"","expandable":false,"children":[]},{"name":"shipped_quantity","type":"`null` \\| `number`","description":"The quantity of the Line Item that has been shipped.","optional":false,"defaultValue":"","expandable":false,"children":[]},{"name":"should_merge","type":"`boolean`","description":"Flag to indicate if new Line Items with the same variant should be merged or added as an additional Line Item.","optional":false,"defaultValue":"true","expandable":false,"children":[]},{"name":"swap","type":"[Swap](../../entities/classes/entities.Swap.mdx)","description":"The details of the swap that the line item may belong to.","optional":false,"defaultValue":"","expandable":true,"children":[]},{"name":"swap_id","type":"`string`","description":"The ID of the swap that the line item may belong to.","optional":false,"defaultValue":"","expandable":false,"children":[]},{"name":"tax_lines","type":"[LineItemTaxLine](../../entities/classes/entities.LineItemTaxLine.mdx)[]","description":"The details of the item's tax lines.","optional":false,"defaultValue":"","expandable":true,"children":[]},{"name":"thumbnail","type":"`null` \\| `string`","description":"A URL string to a small image of the contents of the Line Item.","optional":false,"defaultValue":"","expandable":false,"children":[]},{"name":"title","type":"`string`","description":"The title of the Line Item.","optional":false,"defaultValue":"","expandable":false,"children":[]},{"name":"unit_price","type":"`number`","description":"The price of one unit of the content in the Line Item. This should be in the currency defined by the Cart/Order/Swap/Claim that the Line Item belongs to.","optional":false,"defaultValue":"","expandable":false,"children":[]},{"name":"updated_at","type":"`Date`","description":"The date with timezone at which the resource was updated.","optional":false,"defaultValue":"","expandable":false,"children":[]},{"name":"variant","type":"[ProductVariant](../../entities/classes/entities.ProductVariant.mdx)","description":"The details of the product variant that this item was created from.","optional":false,"defaultValue":"","expandable":true,"children":[]},{"name":"variant_id","type":"`null` \\| `string`","description":"The id of the Product Variant contained in the Line Item.","optional":false,"defaultValue":"","expandable":false,"children":[]},{"name":"discount_total","type":"`null` \\| `number`","description":"The total of discount of the line item rounded","optional":true,"defaultValue":"","expandable":false,"children":[]},{"name":"gift_card_total","type":"`null` \\| `number`","description":"The total of the gift card of the line item","optional":true,"defaultValue":"","expandable":false,"children":[]},{"name":"order_edit","type":"`null` \\| [OrderEdit](../../entities/classes/entities.OrderEdit.mdx)","description":"The details of the order edit.","optional":true,"defaultValue":"","expandable":true,"children":[]},{"name":"order_edit_id","type":"`null` \\| `string`","description":"The ID of the order edit that the item may belong to.","optional":true,"defaultValue":"","expandable":false,"children":[]},{"name":"original_item_id","type":"`null` \\| `string`","description":"The ID of the original line item. This is useful if the line item belongs to a resource that references an order, such as a return or an order edit.","optional":true,"defaultValue":"","expandable":false,"children":[]},{"name":"original_tax_total","type":"`null` \\| `number`","description":"The original tax total amount of the line item","optional":true,"defaultValue":"","expandable":false,"children":[]},{"name":"original_total","type":"`null` \\| `number`","description":"The original total amount of the line item","optional":true,"defaultValue":"","expandable":false,"children":[]},{"name":"raw_discount_total","type":"`null` \\| `number`","description":"The total of discount of the line item","optional":true,"defaultValue":"","expandable":false,"children":[]},{"name":"refundable","type":"`null` \\| `number`","description":"The amount that can be refunded from the given Line Item. Takes taxes and discounts into consideration.","optional":true,"defaultValue":"","expandable":false,"children":[]},{"name":"subtotal","type":"`null` \\| `number`","description":"The subtotal of the line item","optional":true,"defaultValue":"","expandable":false,"children":[]},{"name":"tax_total","type":"`null` \\| `number`","description":"The total of tax of the line item","optional":true,"defaultValue":"","expandable":false,"children":[]},{"name":"total","type":"`null` \\| `number`","description":"The total amount of the line item","optional":true,"defaultValue":"","expandable":false,"children":[]}]},{"name":"rates","type":"[TaxServiceRate](../../medusa/types/medusa.TaxServiceRate.mdx)[]","description":"The rates applicable on the item.","optional":false,"defaultValue":"","expandable":false,"children":[{"name":"name","type":"`string`","description":"The tax rate's name.","optional":false,"defaultValue":"","expandable":false,"children":[]},{"name":"code","type":"`string` \\| `null`","description":"The tax rate's code.","optional":false,"defaultValue":"","expandable":false,"children":[]},{"name":"rate","type":"`number` \\| `null`","description":"The tax rate.","optional":true,"defaultValue":"","expandable":false,"children":[]}]}]},{"name":"shippingLines","type":"[ShippingTaxCalculationLine](../types/tax.ShippingTaxCalculationLine.mdx)[]","description":"The shipping method lines to calculate taxes for.","optional":false,"defaultValue":"","expandable":false,"children":[{"name":"rates","type":"[TaxServiceRate](../../medusa/types/medusa.TaxServiceRate.mdx)[]","description":"The rates applicable on the shipping method.","optional":false,"defaultValue":"","expandable":false,"children":[{"name":"name","type":"`string`","description":"The tax rate's name.","optional":false,"defaultValue":"","expandable":false,"children":[]},{"name":"code","type":"`string` \\| `null`","description":"The tax rate's code.","optional":false,"defaultValue":"","expandable":false,"children":[]},{"name":"rate","type":"`number` \\| `null`","description":"The tax rate.","optional":true,"defaultValue":"","expandable":false,"children":[]}]},{"name":"shipping_method","type":"[ShippingMethod](../../entities/classes/entities.ShippingMethod.mdx)","description":"The shipping method to calculate taxes for.","optional":false,"defaultValue":"","expandable":false,"children":[{"name":"cart","type":"[Cart](../../entities/classes/entities.Cart.mdx)","description":"The details of the cart that the shipping method is used in.","optional":false,"defaultValue":"","expandable":true,"children":[]},{"name":"cart_id","type":"`string`","description":"The ID of the cart that the shipping method is used in.","optional":false,"defaultValue":"","expandable":false,"children":[]},{"name":"claim_order","type":"[ClaimOrder](../../entities/classes/entities.ClaimOrder.mdx)","description":"The details of the claim that the shipping method is used in.","optional":false,"defaultValue":"","expandable":true,"children":[]},{"name":"claim_order_id","type":"`null` \\| `string`","description":"The ID of the claim that the shipping method is used in.","optional":false,"defaultValue":"","expandable":false,"children":[]},{"name":"data","type":"`Record<string, unknown>`","description":"Additional data that the Fulfillment Provider needs to fulfill the shipment. This is used in combination with the Shipping Options data, and may contain information such as a drop point id.","optional":false,"defaultValue":"","expandable":false,"children":[]},{"name":"id","type":"`string`","description":"The shipping method's ID","optional":false,"defaultValue":"","expandable":false,"children":[]},{"name":"includes_tax","type":"`boolean`","description":"Whether the shipping method price include tax","optional":false,"defaultValue":"false","expandable":false,"featureFlag":"tax_inclusive_pricing","children":[]},{"name":"order","type":"[Order](../../entities/classes/entities.Order.mdx)","description":"The details of the order that the shipping method is used in.","optional":false,"defaultValue":"","expandable":true,"children":[]},{"name":"order_id","type":"`string`","description":"The ID of the order that the shipping method is used in.","optional":false,"defaultValue":"","expandable":false,"children":[]},{"name":"price","type":"`number`","description":"The amount to charge for the Shipping Method. The currency of the price is defined by the Region that the Order that the Shipping Method belongs to is a part of.","optional":false,"defaultValue":"","expandable":false,"children":[]},{"name":"return_id","type":"`string`","description":"The ID of the return that the shipping method is used in.","optional":false,"defaultValue":"","expandable":false,"children":[]},{"name":"return_order","type":"[Return](../../entities/classes/entities.Return.mdx)","description":"The details of the return that the shipping method is used in.","optional":false,"defaultValue":"","expandable":true,"children":[]},{"name":"shipping_option","type":"[ShippingOption](../../entities/classes/entities.ShippingOption.mdx)","description":"The details of the shipping option the method was created from.","optional":false,"defaultValue":"","expandable":true,"children":[]},{"name":"shipping_option_id","type":"`string`","description":"The ID of the Shipping Option that the Shipping Method is built from.","optional":false,"defaultValue":"","expandable":false,"children":[]},{"name":"swap","type":"[Swap](../../entities/classes/entities.Swap.mdx)","description":"The details of the swap that the shipping method is used in.","optional":false,"defaultValue":"","expandable":true,"children":[]},{"name":"swap_id","type":"`string`","description":"The ID of the swap that the shipping method is used in.","optional":false,"defaultValue":"","expandable":false,"children":[]},{"name":"tax_lines","type":"[ShippingMethodTaxLine](../../entities/classes/entities.ShippingMethodTaxLine.mdx)[]","description":"The details of the tax lines applied on the shipping method.","optional":false,"defaultValue":"","expandable":true,"children":[]},{"name":"subtotal","type":"`number`","description":"The subtotal of the shipping","optional":true,"defaultValue":"","expandable":false,"children":[]},{"name":"tax_total","type":"`number`","description":"The total of tax","optional":true,"defaultValue":"","expandable":false,"children":[]},{"name":"total","type":"`number`","description":"The total amount of the shipping","optional":true,"defaultValue":"","expandable":false,"children":[]}]}]},{"name":"context","type":"[TaxCalculationContext](../types/tax.TaxCalculationContext.mdx)","description":"Context relevant and useful for the taxes calculation.","optional":false,"defaultValue":"","expandable":false,"children":[{"name":"allocation_map","type":"[LineAllocationsMap](../../medusa/types/medusa.LineAllocationsMap.mdx)","description":"The gift cards and discounts applied on line items.\nEach object key or property is an ID of a line item","optional":false,"defaultValue":"","expandable":false,"children":[]},{"name":"customer","type":"[Customer](../../entities/classes/entities.Customer.mdx)","description":"The cart's customer.","optional":false,"defaultValue":"","expandable":false,"children":[{"name":"billing_address","type":"[Address](../../entities/classes/entities.Address.mdx)","description":"The details of the billing address associated with the customer.","optional":false,"defaultValue":"","expandable":true,"children":[]},{"name":"billing_address_id","type":"`null` \\| `string`","description":"The customer's billing address ID","optional":false,"defaultValue":"","expandable":false,"children":[]},{"name":"created_at","type":"`Date`","description":"The date with timezone at which the resource was created.","optional":false,"defaultValue":"","expandable":false,"children":[]},{"name":"deleted_at","type":"`null` \\| `Date`","description":"The date with timezone at which the resource was deleted.","optional":false,"defaultValue":"","expandable":false,"children":[]},{"name":"email","type":"`string`","description":"The customer's email","optional":false,"defaultValue":"","expandable":false,"children":[]},{"name":"first_name","type":"`string`","description":"The customer's first name","optional":false,"defaultValue":"","expandable":false,"children":[]},{"name":"groups","type":"[CustomerGroup](../../entities/classes/entities.CustomerGroup.mdx)[]","description":"The customer groups the customer belongs to.","optional":false,"defaultValue":"","expandable":true,"children":[]},{"name":"has_account","type":"`boolean`","description":"Whether the customer has an account or not","optional":false,"defaultValue":"false","expandable":false,"children":[]},{"name":"id","type":"`string`","description":"The customer's ID","optional":false,"defaultValue":"","expandable":false,"children":[]},{"name":"last_name","type":"`string`","description":"The customer's last name","optional":false,"defaultValue":"","expandable":false,"children":[]},{"name":"metadata","type":"`Record<string, unknown>`","description":"An optional key-value map with additional details","optional":false,"defaultValue":"","expandable":false,"children":[]},{"name":"orders","type":"[Order](../../entities/classes/entities.Order.mdx)[]","description":"The details of the orders this customer placed.","optional":false,"defaultValue":"","expandable":true,"children":[]},{"name":"password_hash","type":"`string`","description":"","optional":false,"defaultValue":"","expandable":false,"children":[]},{"name":"phone","type":"`string`","description":"The customer's phone number","optional":false,"defaultValue":"","expandable":false,"children":[]},{"name":"shipping_addresses","type":"[Address](../../entities/classes/entities.Address.mdx)[]","description":"The details of the shipping addresses associated with the customer.","optional":false,"defaultValue":"","expandable":true,"children":[]},{"name":"updated_at","type":"`Date`","description":"The date with timezone at which the resource was updated.","optional":false,"defaultValue":"","expandable":false,"children":[]}]},{"name":"is_return","type":"`boolean`","description":"Whether the cart is used in a return flow.","optional":false,"defaultValue":"","expandable":false,"children":[]},{"name":"region","type":"[Region](../../entities/classes/entities.Region.mdx)","description":"The cart's region.","optional":false,"defaultValue":"","expandable":false,"children":[{"name":"automatic_taxes","type":"`boolean`","description":"Whether taxes should be automated in this region.","optional":false,"defaultValue":"true","expandable":false,"children":[]},{"name":"countries","type":"[Country](../../entities/classes/entities.Country.mdx)[]","description":"The details of the countries included in this region.","optional":false,"defaultValue":"","expandable":true,"children":[]},{"name":"created_at","type":"`Date`","description":"The date with timezone at which the resource was created.","optional":false,"defaultValue":"","expandable":false,"children":[]},{"name":"currency","type":"[Currency](../../entities/classes/entities.Currency.mdx)","description":"The details of the currency used in the region.","optional":false,"defaultValue":"","expandable":true,"children":[]},{"name":"currency_code","type":"`string`","description":"The three character currency code used in the region.","optional":false,"defaultValue":"","expandable":false,"children":[]},{"name":"deleted_at","type":"`null` \\| `Date`","description":"The date with timezone at which the resource was deleted.","optional":false,"defaultValue":"","expandable":false,"children":[]},{"name":"fulfillment_providers","type":"[FulfillmentProvider](../../entities/classes/entities.FulfillmentProvider.mdx)[]","description":"The details of the fulfillment providers that can be used to fulfill items of orders and similar resources in the region.","optional":false,"defaultValue":"","expandable":true,"children":[]},{"name":"gift_cards_taxable","type":"`boolean`","description":"Whether the gift cards are taxable or not in this region.","optional":false,"defaultValue":"true","expandable":false,"children":[]},{"name":"id","type":"`string`","description":"The region's ID","optional":false,"defaultValue":"","expandable":false,"children":[]},{"name":"includes_tax","type":"`boolean`","description":"Whether the prices for the region include tax","optional":false,"defaultValue":"false","expandable":false,"featureFlag":"tax_inclusive_pricing","children":[]},{"name":"metadata","type":"`Record<string, unknown>`","description":"An optional key-value map with additional details","optional":false,"defaultValue":"","expandable":false,"children":[]},{"name":"name","type":"`string`","description":"The name of the region as displayed to the customer. If the Region only has one country it is recommended to write the country name.","optional":false,"defaultValue":"","expandable":false,"children":[]},{"name":"payment_providers","type":"[PaymentProvider](../../entities/classes/entities.PaymentProvider.mdx)[]","description":"The details of the payment providers that can be used to process payments in the region.","optional":false,"defaultValue":"","expandable":true,"children":[]},{"name":"tax_code","type":"`string`","description":"The tax code used on purchases in the Region. This may be used by other systems for accounting purposes.","optional":false,"defaultValue":"","expandable":false,"children":[]},{"name":"tax_provider","type":"[TaxProvider](../../entities/classes/entities.TaxProvider.mdx)","description":"The details of the tax provider used in the region.","optional":false,"defaultValue":"","expandable":true,"children":[]},{"name":"tax_provider_id","type":"`null` \\| `string`","description":"The ID of the tax provider used in this region","optional":false,"defaultValue":"","expandable":false,"children":[]},{"name":"tax_rate","type":"`number`","description":"The tax rate that should be charged on purchases in the Region.","optional":false,"defaultValue":"","expandable":false,"children":[]},{"name":"tax_rates","type":"`null` \\| [TaxRate](../../entities/classes/entities.TaxRate.mdx)[]","description":"The details of the tax rates used in the region, aside from the default rate.","optional":false,"defaultValue":"","expandable":true,"children":[]},{"name":"updated_at","type":"`Date`","description":"The date with timezone at which the resource was updated.","optional":false,"defaultValue":"","expandable":false,"children":[]}]},{"name":"shipping_address","type":"[Address](../../entities/classes/entities.Address.mdx) \\| `null`","description":"The shipping address in the cart.","optional":false,"defaultValue":"","expandable":false,"children":[]},{"name":"shipping_methods","type":"[ShippingMethod](../../entities/classes/entities.ShippingMethod.mdx)[]","description":"The shipping methods used in the cart.","optional":false,"defaultValue":"","expandable":false,"children":[{"name":"cart","type":"[Cart](../../entities/classes/entities.Cart.mdx)","description":"The details of the cart that the shipping method is used in.","optional":false,"defaultValue":"","expandable":true,"children":[]},{"name":"cart_id","type":"`string`","description":"The ID of the cart that the shipping method is used in.","optional":false,"defaultValue":"","expandable":false,"children":[]},{"name":"claim_order","type":"[ClaimOrder](../../entities/classes/entities.ClaimOrder.mdx)","description":"The details of the claim that the shipping method is used in.","optional":false,"defaultValue":"","expandable":true,"children":[]},{"name":"claim_order_id","type":"`null` \\| `string`","description":"The ID of the claim that the shipping method is used in.","optional":false,"defaultValue":"","expandable":false,"children":[]},{"name":"data","type":"`Record<string, unknown>`","description":"Additional data that the Fulfillment Provider needs to fulfill the shipment. This is used in combination with the Shipping Options data, and may contain information such as a drop point id.","optional":false,"defaultValue":"","expandable":false,"children":[]},{"name":"id","type":"`string`","description":"The shipping method's ID","optional":false,"defaultValue":"","expandable":false,"children":[]},{"name":"includes_tax","type":"`boolean`","description":"Whether the shipping method price include tax","optional":false,"defaultValue":"false","expandable":false,"featureFlag":"tax_inclusive_pricing","children":[]},{"name":"order","type":"[Order](../../entities/classes/entities.Order.mdx)","description":"The details of the order that the shipping method is used in.","optional":false,"defaultValue":"","expandable":true,"children":[]},{"name":"order_id","type":"`string`","description":"The ID of the order that the shipping method is used in.","optional":false,"defaultValue":"","expandable":false,"children":[]},{"name":"price","type":"`number`","description":"The amount to charge for the Shipping Method. The currency of the price is defined by the Region that the Order that the Shipping Method belongs to is a part of.","optional":false,"defaultValue":"","expandable":false,"children":[]},{"name":"return_id","type":"`string`","description":"The ID of the return that the shipping method is used in.","optional":false,"defaultValue":"","expandable":false,"children":[]},{"name":"return_order","type":"[Return](../../entities/classes/entities.Return.mdx)","description":"The details of the return that the shipping method is used in.","optional":false,"defaultValue":"","expandable":true,"children":[]},{"name":"shipping_option","type":"[ShippingOption](../../entities/classes/entities.ShippingOption.mdx)","description":"The details of the shipping option the method was created from.","optional":false,"defaultValue":"","expandable":true,"children":[]},{"name":"shipping_option_id","type":"`string`","description":"The ID of the Shipping Option that the Shipping Method is built from.","optional":false,"defaultValue":"","expandable":false,"children":[]},{"name":"swap","type":"[Swap](../../entities/classes/entities.Swap.mdx)","description":"The details of the swap that the shipping method is used in.","optional":false,"defaultValue":"","expandable":true,"children":[]},{"name":"swap_id","type":"`string`","description":"The ID of the swap that the shipping method is used in.","optional":false,"defaultValue":"","expandable":false,"children":[]},{"name":"tax_lines","type":"[ShippingMethodTaxLine](../../entities/classes/entities.ShippingMethodTaxLine.mdx)[]","description":"The details of the tax lines applied on the shipping method.","optional":false,"defaultValue":"","expandable":true,"children":[]},{"name":"subtotal","type":"`number`","description":"The subtotal of the shipping","optional":true,"defaultValue":"","expandable":false,"children":[]},{"name":"tax_total","type":"`number`","description":"The total of tax","optional":true,"defaultValue":"","expandable":false,"children":[]},{"name":"total","type":"`number`","description":"The total amount of the shipping","optional":true,"defaultValue":"","expandable":false,"children":[]}]}]}]} />
#### Returns
<ParameterTypes parameters={[{"name":"Promise","type":"Promise&#60;[ProviderTaxLine](../../medusa/types/medusa.ProviderTaxLine.mdx)[]&#62;","optional":false,"defaultValue":"","description":"The list of calculated line item and shipping method tax lines.\nIf an item in the array has the `shipping_method_id` property, then it's a shipping method tax line. Otherwise, if it has\nthe `item_id` property, then it's a line item tax line.","expandable":false,"children":[{"name":"ProviderTaxLine[]","type":"[ProviderTaxLine](../../medusa/types/medusa.ProviderTaxLine.mdx)[]","optional":false,"defaultValue":"","description":"","expandable":false,"children":[{"name":"ProviderTaxLine","type":"[ProviderLineItemTaxLine](../../medusa/types/medusa.ProviderLineItemTaxLine.mdx) \\| [ProviderShippingMethodTaxLine](../../medusa/types/medusa.ProviderShippingMethodTaxLine.mdx)","description":"A union type of the possible provider tax lines.","optional":false,"defaultValue":"","expandable":false,"children":[]}]}]}]} />