Shopify changed how it calculates VAT for Great Britain orders on October 23. For orders above £135 before tax and shipping, the platform now uses the fulfillment location selected by order routing to decide whether the order counts as a domestic sale or an import.

If routing picks a location outside the UK, Shopify treats the order as an import and charges no VAT at checkout. That holds even when the merchant also has inventory at a UK location.

The Rule Is Narrower Than It Sounds

Three conditions have to align: the customer ships to Great Britain, the order exceeds £135 before tax and shipping, and routing selects a fulfillment location outside the UK.

Orders of £135 or less are unaffected. Northern Ireland orders fall outside the change. Existing orders are not recalculated.

The operational problem is that routing depends on inventory, location priority, and other fulfillment rules. Two customers buying the same product at the same price can see different tax treatment if one order routes to a UK warehouse and the other routes to the EU.

Shopify's Help Center adds a detail worth catching: the fulfillment location used for VAT is determined at checkout. Changing it after the order is created does not recalculate VAT. Draft orders can also produce different results, because a fulfillment location might not be assigned.

Shopify's Logic Is Not Tax Advice

The change moves Shopify closer to the UK distinction between goods already in the country and goods imported after sale.

HMRC says normal import VAT and customs rules apply to consignments above £135 when goods sit outside the UK at the point of sale. It also says overseas sellers owning goods already located in the UK generally must register and account for VAT on direct sales to UK customers.

Those rules carry details and exceptions beyond Shopify's routing logic. The £135 test applies to the consignment rather than automatically to each item, and separately stated transport or insurance can affect intrinsic value. B2B orders, excise goods, and special rates need different treatment.

Treat Shopify as a calculation tool, not the authority on your legal obligation. A UK tax adviser should confirm who acts as importer of record, when VAT gets collected, and what your invoices and returns must show.

Inventory Placement Is Now Tax Configuration

A merchant with stock in London and Amsterdam has to review more than the VAT settings page.

If the London location runs out of inventory or sits below Amsterdam in routing priority, an order over £135 can route outside the UK and lose checkout VAT. The buyer then faces import VAT, duty, or carrier charges during delivery.

Responsibility depends on your shipping terms. Incoterms and who bears shipping costs is the relevant mapping exercise before making any delivered-cost promise.

Shopify offers two ways to charge VAT at checkout on affected orders: update routing so the order assigns to a UK location, or configure collection of duties and import taxes at checkout.

Neither should be enabled without testing. Routing every qualifying order to the UK can create split shipments or stock imbalances. Collecting import charges requires accurate classifications, countries of origin, and shipping terms, and a checkout duty estimate does not necessarily cover every brokerage or disbursement charge.

Test Real Checkouts, Not Draft Orders

Shopify warns that draft orders can produce different results because they may lack an assigned fulfillment location. For a Great Britain order over £135, run a real checkout test.

Build a matrix covering an order below £135 and one above, each with inventory available only in the UK, only outside the UK, and in both places. Confirm the selected location, VAT line, shipping method, and customer-facing import language in each case.

Then test what happens when the preferred UK location runs out of stock. That is the scenario most likely to produce a surprise after a routing rule quietly picks another warehouse.

Document the expected result for support and fulfillment staff. The signal worth watching is not whether Shopify calls the calculation more accurate. It is whether your live checkout, customs paperwork, and carrier invoice all assign the same cost to the same party.