# BT-123 Total VAT amount

The total VAT amount for the invoice. This is the same as BT-110.

## Quick answer

The total VAT amount for the invoice. This is the same as BT-110.

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

## In plain language

The total VAT amount for the invoice. This is the same as BT-110.

The total VAT amount for the invoice. This is the same as BT-110.

Total VAT amount for the entire invoice.

## What you usually enter here

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

Typical valid values include: 190.00, 0.00, 1520.38

Optional according to EN 16931-1. Same as BT-110.

## What goes wrong often

Avoid values like: -190.00, 190,00, 190.999

Relevant rule codes: BR-2

## Examples in context

Total VAT amount for the entire invoice.

Optional according to EN 16931-1. Same as BT-110.

## Valid Examples

- 190.00
- 0.00
- 1520.38

## Invalid Examples

- -190.00
- 190,00
- 190.999

## Related Fields

Total VAT amount for the entire invoice.

- [BT-110 Invoice Total VAT Amount](/resources/xrechnung/bt-110-invoice-total-vat-amount)
- [BT-117 VAT Category Tax Amount](/resources/xrechnung/bt-117-vat-category-tax-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-123

### Data Type:
amount

### Cardinality:
0..1

### Requirement:
Optional

### Since Version:
Optional

## XML Implementation

### UBL 2.1 Syntax
```
/Invoice/cac:TaxTotal/cbc:TaxAmount
```

### CII (UN/CEFACT) Syntax
```
/CrossIndustryInvoice/SupplyChainTradeTransaction/ApplicableHeaderTradeSettlement/ram:ApplicableTradeTax/ram:CalculatedAmount
```

## Validation Rules

### BR-2
BR-2

## Why the standard cares about this field

### Business Context
Total VAT amount for the entire invoice.

### Legal Requirement
Optional according to EN 16931-1. Same as BT-110.

## 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)