Rule BR-Z-05
A zero rated line must have a VAT rate of zero
On a line marked zero rated, the VAT rate is zero. VAT applies to the supply; the rate that applies is nought.
Business term BT-152, Invoiced item VAT rate (with BT-151, category code Z). Source: EN 16931. Our wording, not the normative text, which is published in the Peppol BIS Billing 3.0 rule list and was checked against it on 2026-08-16.
Why it fires on invoices that look fine
Almost nobody hits this rule because they forgot the field exists. They hit it because something between their system and the document dropped it, changed its shape, or filled it with a value that is right somewhere else. These are the causes worth checking first.
- The category was set to Z while the rate stayed at the domestic percentage, usually because the two fields are populated by different parts of the export.
- Zero rated was chosen when exempt (E) was meant. Both produce no VAT to pay and they are not interchangeable: zero rated supplies usually keep the right to deduct input VAT, exempt ones usually do not.
What to change
- Set the rate to 0 on every line whose category is Z.
- Confirm the category is the right one for the supply before changing the rate. The distinction between Z and E rarely changes the invoice total and often changes the VAT return.
The validator runs in your browser. Nothing is uploaded, and you can confirm that yourself with the network panel open.
Rules you are likely to hit next
A document that breaks BR-Z-05 usually breaks one of these too, because the same mapping gap tends to affect neighbouring fields.
Questions people actually ask
- What does BR-Z-05 mean?
- On a line marked zero rated, the VAT rate is zero. VAT applies to the supply; the rate that applies is nought.
- Which field does BR-Z-05 apply to?
- BT-152, Invoiced item VAT rate (with BT-151, category code Z). That is the name the semantic model uses, which is what you search for in your own system's mapping when the identifier alone does not tell you which field to look at.
- Does our validator check BR-Z-05?
- Yes. Paste your invoice data into the free validator and it reports this rule with the value it actually saw, without the document leaving your browser.