Enterprise tax automation,
for US and UK.

These are two separate steps. Tax is calculated when the order is created: directly by Fulfil for orders you enter manually, or at checkout by Shopify or another platform for e-commerce orders. Fulfil then reports the completed transaction to Avalara when the invoice is posted, which is typically when the order ships, so your filings reflect the final shipped amounts and confirmed addresses.

Yes. Shopify can continue calculating tax at checkout while Fulfil sends the shipped transactions to Avalara for filing, and the two work together without conflict. If you want to avoid duplicate records in Avalara, you can disable transaction sending from Shopify while keeping its tax calculation on.

Yes. You manage Avalara tax codes at the product category level or the individual product level, and a product-level code overrides its category for items like apparel, food, and supplements. Tax codes are not inherited from parent categories, so each subcategory needs its own code.

Yes. The integration is certified by Avalara for VAT and carries the official VAT badge. For UK entities you can set the tax rule to cover both sales and purchase transactions, which lets Fulfil send supplier invoices for input tax, and Fulfil adds required VAT messages such as reverse charge and intra-community supply notes to your invoices.

No. Fulfil sends transaction data to Avalara but does not file your returns. You use the transaction data collected in AvaTax to complete your VAT filing to HMRC separately.

Yes. If your companies share one Avalara account, you need only one integration, with separate tax rules for each company. If a company uses its own Avalara account, you create a separate integration for it, and either way each company's transactions stay segregated.