How do I get my Account ID and License Key?

This depends on whether you have access to the Avalara Portal:

If you have portal access (for example, use AvaTax or CertCapture):
1. Sign in to the Avalara Portal.
2. Go to Settings > License and API Keys.
3. Select Generate New Key (this invalidates any existing key).
4. Your Account ID is shown under the Account menu.

If you don’t have portal access:

Contact Avalara 1099 Customer Support to request API activation.
The Account Owner will receive an email to set up their credentials.

Activate your account and accept the Terms via:

curl -X POST \
  'https://rest.avatax.com/api/v2/accounts/{accountId}/activate' \
  -H 'authorization: Basic {base64Encoded(email:password)}' \
  -d '{ "acceptAvalaraTermsAndConditions": true, "haveReadAvalaraTermsAndConditions": true }'

Retrieve your account information and license key using the API.

curl -X GET \
 'https://rest.avatax.com/api/v2/accounts' \
 -H 'accept: application/json' \
 -H 'authorization: Basic {base64Encoded(email:password)}'

curl -X POST \
  'https://rest.avatax.com/api/v2/accounts/{accountId}/licensekey' \
  -H 'accept: application/json' \
  -H 'authorization: Basic {base64Encoded(email:password)}' \
  -H 'Content-Type: application/json-patch+json' \
  -d '{
    "name": "{{licenseKeyName}}",
    "accountId": "{{accountId}}"
  }'

Use these credentials to request a bearer token as shown above.