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medusa-store/www/apps/docs/content/references/services/interfaces/ITaxCalculationStrategy.mdx
github-actions[bot] cdd42dbdcd chore(docs): Generated References (#5743)
Generated the following references:
- `entities`
- `inventory`
- `js-client`
- `pricing`
- `product`
- `services`
- `stock-location`
- `workflows`

Co-authored-by: Oli Juhl <59018053+olivermrbl@users.noreply.github.com>
Co-authored-by: Shahed Nasser <27354907+shahednasser@users.noreply.github.com>
2023-11-27 18:58:52 +00:00

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---
displayed_sidebar: servicesSidebar
---
import ParameterTypes from "@site/src/components/ParameterTypes"
# ITaxCalculationStrategy
## Methods
#### calculate
`**calculate**(items, taxLines, calculationContext): Promise&#60;number&#62;`
Calculates the tax amount for a given set of line items under applicable
tax conditions and calculation contexts.
##### Parameters
<ParameterTypes parameters={[
{
"name": "items",
"type": "[LineItem](../classes/LineItem.mdx)[]",
"description": "the line items to calculate the tax total for",
"optional": false,
"defaultValue": "",
"expandable": false,
"children": []
},
{
"name": "taxLines",
"type": "([LineItemTaxLine](../classes/LineItemTaxLine.mdx) \\| [ShippingMethodTaxLine](../classes/ShippingMethodTaxLine.mdx))[]",
"description": "the tax lines that applies to the calculation",
"optional": false,
"defaultValue": "",
"expandable": false,
"children": []
},
{
"name": "calculationContext",
"type": "[TaxCalculationContext](../types/TaxCalculationContext.mdx)",
"description": "other details relevant for the calculation",
"optional": false,
"defaultValue": "",
"expandable": false,
"children": []
}
]} />
##### Returns
Promise&#60;number&#62;
<ParameterTypes parameters={[
{
"name": "Promise",
"type": "Promise&#60;number&#62;",
"optional": false,
"defaultValue": "",
"description": "the tax total",
"expandable": false,
"children": []
}
]} />