# Add Avalara Tax to a Campaign
*Click* on **CRM > Campaigns >** *Click* on the blue **“Edit Icon”** located next to the Campaign you want to add AvaTax to.
This will take you to the **Campaign's** Edit page.
* In the “General Details” Section under **"Billing options”**. Below Tax Service *click* on the drop down and select **AvaTax**. Then Click on the blue **"Update"**.
* Check the box next to “Auto Tax Calculation” if you want it to automatically calculate the sales tax and then click **"Update"**.
**Note: *****AvaTax automatically determines the sales tax rates at checkout. Avalara makes setting up and calculating sales tax for your online store much easier to manage.***
