BR-CO-16 Amount due doesn't match

The amount due must equal the total with VAT, minus anything already paid, plus rounding.

What the rule says

Amount due for payment (BT-115) = Invoice total amount with VAT (BT-112) -Paid amount (BT-113) +Rounding amount (BT-114).

The rule's official wording (CEN / KoSIT). The German XRechnung rules are published in German.

Why it happens

The amount due (BT-115) isn't the total with VAT, minus the amount already paid (BT-113), plus rounding (BT-114).

How to fix it

Record prepayments in the prepaid amount field rather than lowering the total, and recalculate the amount due.

Applies to

Every EN 16931 e-invoice: XRechnung, ZUGFeRD / Factur-X, Peppol and others.

Check your invoice again Create an invoice that passes

More about BR-CO-16

The amount due is what the buyer still has to pay. It must equal the total with VAT, minus anything already paid, plus the rounding amount. Unlike the other totals, this one is compared exactly, without any rounding step in between.

Worked example: a final invoice of 1,190.00 including VAT, after a deposit of 500.00. The total with VAT stays 1,190.00, the paid amount (BT-113) is 500.00, and the amount due is 690.00. If the file instead sets the amount due to 690.00 without a paid amount, or lowers the total with VAT to 690.00, the numbers no longer add up.

For a credit note or a fully prepaid invoice, the amount due can be 0.00. It must still be written into the file.

The fields involved

BT-115 Amount due for payment: CII ram:SpecifiedTradeSettlementHeaderMonetarySummation/ram:DuePayableAmount; UBL cac:LegalMonetaryTotal/cbc:PayableAmount
BT-112 Invoice total amount with VAT: CII ram:SpecifiedTradeSettlementHeaderMonetarySummation/ram:GrandTotalAmount; UBL cac:LegalMonetaryTotal/cbc:TaxInclusiveAmount
BT-113 Paid amount: CII ram:SpecifiedTradeSettlementHeaderMonetarySummation/ram:TotalPrepaidAmount; UBL cac:LegalMonetaryTotal/cbc:PrepaidAmount
BT-114 Rounding amount: CII ram:SpecifiedTradeSettlementHeaderMonetarySummation/ram:RoundingAmount; UBL cac:LegalMonetaryTotal/cbc:PayableRoundingAmount

Typical situations

A final invoice after deposits or partial invoices, where the deposits weren't recorded as paid.
The amount due was rounded without stating the rounding amount.
A partial payment was entered as a negative line or a discount instead of a paid amount.

Example

A final invoice after a deposit (CII):

<ram:GrandTotalAmount>1190.00</ram:GrandTotalAmount>
<ram:TotalPrepaidAmount>500.00</ram:TotalPrepaidAmount>
<ram:DuePayableAmount>690.00</ram:DuePayableAmount>