# BT-115 Amount Due for Payment

The outstanding amount that is requested to be paid. This is BT-112 (Invoice total amount with VAT) minus BT-113 (Paid amount) plus BT-114 (Rounding amount).

> BT-115 (Amount due for payment) is the final outstanding sum the buyer must remit. Mandatory under EN 16931 and XRechnung. It equals BT-112 minus prepaid amounts (BT-113) plus rounding (BT-114). Must be present even on fully paid (zero-due) invoices. Example: 1190.00.
>
> BT-115 · EN 16931 / XRechnung 3.x

## BT Reference Card

Canonical EN 16931 / XRechnung facts for this business term — citable from this anchor.

- **BT code**: BT-115
- **Name**: Amount Due for Payment
- **Cardinality**: Mandatory (M) — XRechnung; Mandatory (M) — EN 16931
- **Business group**: BG-22 DOCUMENT TOTALS
- **Data type**: Amount
- **Example value**: 1190.00
- **Common error**: BR-CO-16: Amount due for payment (BT-115) shall equal BT-112 (total with VAT) minus BT-113 (paid amount) plus BT-114 (rounding amount). Required to be present even when zero.

## Quick answer

The outstanding amount that is requested to be paid. This is BT-112 (Invoice total amount with VAT) minus BT-113 (Paid amount) plus BT-114 (Rounding amount).

> **Taxes and totals**: VAT treatment, tax breakdowns, and document totals that validators check closely.

## In plain language

The outstanding amount that is requested to be paid. This is BT-112 (Invoice total amount with VAT) minus BT-113 (Paid amount) plus BT-114 (Rounding amount).

The outstanding amount that is requested to be paid. This is BT-112 (Invoice total amount with VAT) minus BT-113 (Paid amount) plus BT-114 (Rounding amount).

This is the actual amount the customer needs to pay, considering any prepayments or deposits already made. For new invoices without prepayments, this equals BT-112.

## What you usually enter here

Decimal number with up to 2 decimal places, non-negative

Typical valid values include: 1190.00, 595.00, 0.00, 1199999.99

Mandatory according to EN 16931-1. Must be mathematically correct and represents the legally enforceable payment amount.

## What goes wrong often

Avoid values like: -119.00, 1190,00, 1.190.00, amount

Relevant rule codes: BR-2, BR-15

## Examples in context

This is the actual amount the customer needs to pay, considering any prepayments or deposits already made. For new invoices without prepayments, this equals BT-112.

Mandatory according to EN 16931-1. Must be mathematically correct and represents the legally enforceable payment amount.

## Valid Examples

- 1190.00
- 595.00
- 0.00
- 1199999.99

## Invalid Examples

- -119.00
- 1190,00
- 1.190.00
- amount

## Related Fields

This is the actual amount the customer needs to pay, considering any prepayments or deposits already made. For new invoices without prepayments, this equals BT-112.

- [BT-112 Invoice Total Amount With VAT](/resources/xrechnung/bt-112-invoice-total-amount-with-vat)
- [BT-113 Paid Amount](/resources/xrechnung/bt-113-paid-amount)
- [BT-114 Rounding Amount](/resources/xrechnung/bt-114-rounding-amount)

## XML mapping and field facts

Open the technical reference if you need XML paths, validator rule codes, legal wording, or schema-specific mapping details.

### Field ID:
BT-115

### Data Type:
amount

### Cardinality:
1..1

### Requirement:
Mandatory

### Since Version:
XRechnung 1.0+

## XML Implementation

### UBL 2.1 Syntax
```
/Invoice/cac:LegalMonetaryTotal/cbc:PayableAmount
```

### CII (UN/CEFACT) Syntax
```
/CrossIndustryInvoice/SupplyChainTradeTransaction/ApplicableHeaderTradeSettlement/ram:SpecifiedTradeSettlementHeaderMonetarySummation/ram:DuePayableAmount
```

## Validation Rules

### BR-2
BR-2

### BR-15
BR-15

## Why the standard cares about this field

### Business Context
This is the actual amount the customer needs to pay, considering any prepayments or deposits already made. For new invoices without prepayments, this equals BT-112.

### Legal Requirement
Mandatory according to EN 16931-1. Must be mathematically correct and represents the legally enforceable payment amount.

## FAQ

### When is BT-115 different from BT-112?
BT-115 differs from BT-112 when prepayments (BT-113) have been made or rounding amounts (BT-114) apply. Formula: BT-115 = BT-112 - BT-113 + BT-114.

### Can the amount due for payment be zero?
Yes, if the total invoice amount has been fully covered by prepayments, BT-115 can be 0.00.

## Official sources and tools

- [KoSIT Validator](https://erechnungsvalidator.service-bw.de/)
- [Invoice Converter](/pdf-to-xrechnung)
- [XRechnung Standard](https://xeinkauf.de/xrechnung/)
- [Test Suite](https://github.com/itplr-kosit/xrechnung-testsuite)