> ## Documentation Index
> Fetch the complete documentation index at: https://docs.numeral.com/llms.txt
> Use this file to discover all available pages before exploring further.

# CheckoutChamp

> Connect your CheckoutChamp account to Numeral in 3 steps for automated US sales tax calculation.

***

## Before You Begin

Make sure you have the following ready:

* Admin access to your CheckoutChamp account
* Access to your Numeral account

***

## Step 1 — Create an API User in CheckoutChamp

Numeral needs a dedicated user to communicate securely with CheckoutChamp. Do not use your regular login account.

**1.1** Go to the **Users** page in CheckoutChamp.

**1.2** Create a new dedicated API user.

For reference, see the [CheckoutChamp API Documentation](https://help.checkoutchamp.com/api-documentation/api-documentation/performing-api-calls).

**1.3** Add the following IPs to the API user's **whitelist**:

<Warning>
  You must add all 6 IPs. If any are missing, the connection will fail.

  ```
  44.239.47.99
  34.217.165.100
  44.239.45.96
  52.41.70.142
  35.86.36.89
  54.212.227.116
  ```
</Warning>

**1.4** Save the **Login ID** and **Password** of the API user — you'll need them in the next step.

***

## Step 2 — Connect in Numeral

**2.1** In Numeral, go to **Connections** and select **Add Connection → CheckoutChamp**.

**2.2** Enter the **Login ID** and **Password** from the API user created in Step 1.

**2.3** Click **Validate Credentials** — the system will automatically verify your credentials.

**2.4** If validation succeeds, the wizard will automatically advance to the next step.

***

## Step 3 — Configure the Tax Service Plugin in CheckoutChamp

**3.1** On step 2 of the Numeral wizard, click **Open CheckoutChamp Documentation**.

**3.2** Follow the instructions on that page to enable the Numeral tax service plugin.

For reference, see the [Numeral Tax Plugin on CheckoutChamp](https://help.checkoutchamp.com/crm/plugins/tax-services/numeral).

**3.3** Return to Numeral and click **Confirm Connection** to complete the setup.

***

## What Happens After Connecting?

* Numeral will automatically begin **importing your order history**.
* Taxes will be **calculated automatically** on new orders through the configured plugin.