# Option to display prices with tax included

Source: https://developer.avalara.com/vat-ecom/designing/tax-included-option/

**Element type:** Required

**Endpoints/Models used:** [LineItemModel](https://developer.avalara.com/api-reference/avatax/rest/v2/models/LineItemModel/)

When creating transactions, include an option that shows prices with tax included. A `taxIncluded` parameter tells AvaTax to use a product’s price as a target for the total sale. As a result, AvaTax will back the tax out of the total amount provided in the request.

The `taxIncluded` option appears on the line element in your CreateTransaction model. This means that you can sell a mixture of tax-included and tax-excluded items in a single transaction.

[![Closed](https://avalara-devdocs-prod.mcoutput.com/vat-ecom/Skins/Default/Stylesheets/Images/transparent.gif)View example](javascript:void\(0\);)

```
 {  "lines": [    {      "number": "1",      "quantity": 1,      "amount": 107.50,      "taxCode": "PS081282",      "itemCode": "Y0001",      "description": "Yarn",      "taxIncluded": "true"    }  ],  ...} 
```