# BT-8 VAT point date code

Code that explains how the VAT point date was determined.

## Quick answer

Code that explains how the VAT point date was determined.

> **Invoice basics**: Core document identifiers, dates, process identifiers, and high-level invoice context.

## In plain language

Code that explains how the VAT point date was determined.

Code that explains how the VAT point date was determined.

Use this field only when tax law requires the invoice to explain the rule behind the VAT point date.

## What you usually enter here

Approved VAT point date code

Typical valid values include: 3, 35

Optional according to EN 16931-1. Use the approved code list when it is present.

## What goes wrong often

Avoid values like: VAT date, 03

## Examples in context

Use this field only when tax law requires the invoice to explain the rule behind the VAT point date.

Optional according to EN 16931-1. Use the approved code list when it is present.

## Valid Examples

- 3
- 35

## Invalid Examples

- VAT date
- 03

## Related Fields

Use this field only when tax law requires the invoice to explain the rule behind the VAT point date.

- [BT-7 Value Added Tax Point Date](/resources/xrechnung/bt-7-vat-point-date)

## 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-8

### Data Type:
code

### Cardinality:
0..1

### Requirement:
Optional

### Max Length:
4 characters

### Since Version:
Optional

## XML Implementation

### UBL 2.1 Syntax
```
/Invoice/cbc:TaxPointDateCode
```

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

## Why the standard cares about this field

### Business Context
Use this field only when tax law requires the invoice to explain the rule behind the VAT point date.

### Legal Requirement
Optional according to EN 16931-1. Use the approved code list when it is present.

## 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)