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Validate Addresses with AvaTax

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Last updated on Aug 24, 2026

Address validation ensures Customer, Contract, and Invoice addresses are accurate before AvaTax calculates Sales Tax. By validating or correcting addresses, individually or in bulk, you reduce tax errors, prevent commit failures, and maintain clean data across your billing records. You can use this feature even if you have Commit Sales Tax disabled in your AvaTax integration settings.

Important: Address validation requires Enable Address Validation to be turned on in your AvaTax integration settings.

Automatic validation on save

When Enable Address Validation is on, Maxio won't let you save a Customer, Contract, or Invoice with an invalid Billing or Shipping address. If you try, an alert message appears above the invalid address and the record isn't saved until you correct it.

Edit Invoice address tab with an alert that the state or province is invalid and the address incomplete
Invalid address alert

Manually validate an address

You don't have to wait for Maxio to catch an invalid address on save. You can check an address on demand, any time.

To manually validate an address

  1. Click Validate with AvaTax on a Customer, Contract, or Invoice.
  2. If the address is valid, choose either your original entry or its AvaTax-validated equivalent as the final address.
Address Data tab with billing and shipping panels, each with a Validate with AvaTax control
Validate with AvaTax option
Address validation dialog comparing the original address against the AvaTax-validated one
Choose your original or AvaTax-validated address

Validate addresses in bulk

Enabling AvaTax doesn't retroactively validate your existing Customers' addresses.

To validate existing Customer addresses in bulk

  1. Go to the Customers tab on the AvaTax landing page.
  2. Select the Customers you want to validate.
  3. Choose Validate Addresses as the bulk action. Since this makes a real API call to Avalara for every Customer checked, Maxio warns you before continuing.
  4. Click Yes to confirm.
AvaTax customers tab with row checkboxes and a bulk validate-addresses action
Bulk validate Customer addresses

To update your Merchant Address or Address Validation setting, see Configure the AvaTax Integration.

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