What causes the BR-CO-13 error?

The VAT amount must equal TaxableAmount × Rate / 100 (with rounding).

How do I fix BR-CO-13?

Verify TaxAmount = TaxableAmount × Percent ÷ 100. You can also use Invoice Navigator's automatic Fixer tool to correct this instantly.

Is BR-CO-13 a critical error?

Yes, BR-CO-13 is a critical error that will cause invoice rejection. It must be fixed before submission to ensure your invoice is accepted by the recipient's system.

Can BR-CO-13 be automatically fixed?

Many instances of BR-CO-13 can be automatically corrected using Invoice Navigator's Fixer tool. Upload your invoice and the tool will identify and fix common issues, including tax amount calculation error.

Which accounting software causes BR-CO-13?

BR-CO-13 is commonly seen in exports from All invoicing software. These software packages sometimes generate invoices that need adjustment to meet full compliance standards.

Error codes · EN 16931

BR-CO-13Partly

Invoice total without VAT calculation must be correct

This is the rejection, word for word: „[BR-CO-13] Invoice total without VAT (BT-109) = sum of line net amounts (BT-131) minus allowances (BT-107) plus charges (BT-108).“

What to have readyThe correct figures from your bookkeeping; we show you which field is affected.

What we doInvoice Navigator automatically fixes this issue by correcting the `cbc:TaxExclusiveAmount` element in your Invoice.

Choose the rejected invoiceor drop it here

XRechnung XML or ZUGFeRD PDF. Checking is free · corrected file €1.90 · the first every 30 days is free · no sign-up.

If you enter it yourself in your invoicing software

Before

<cac:LegalMonetaryTotal>
  <cbc:TaxExclusiveAmount>999.99</cbc:TaxExclusiveAmount>
  <!-- Does not match expected calculation -->
</cac:LegalMonetaryTotal>

After

<cac:LegalMonetaryTotal>
  <cbc:TaxExclusiveAmount>100.00</cbc:TaxExclusiveAmount>
  <!-- Matches expected calculation -->
</cac:LegalMonetaryTotal>

What the finding looks likeExample

FindingNeeds your check · BR-CO-13

Location/Invoice/cac:LegalMonetaryTotal/cbc:TaxExclusiveAmount

From youThe correct figures

ThenChecked again

ProofSHA-256 and /verify link after the check

Often appears together with

BR-CO-10Sum of Invoice line net amount (BT-106) = Σ Invoice line net amount (BT-131)BR-CO-14Invoice total VAT amount must equal the sum of VAT category tax amounts