# BR-KSA-79

Source: https://xmlvalid.com/rules/BR-KSA-79

> The Prepayment VAT Category Tax Amount (KSA-32) must be Prepayment VAT category Taxable Amount( (KSA-31) x Prepayment VAT rate (KSA-34) /100).

- Level: warning
- Rule sets: ZATCA e-invoicing rules (Saudi Arabia) SDK 3.4.6
- Context: `/ubl:Invoice/cac:InvoiceLine/cac:DocumentReference/cbc:DocumentTypeCode`
- Test: `/ubl:Invoice/cac:InvoiceLine/cac:TaxTotal/cac:TaxSubtotal/cbc:TaxAmount`

Validate a document against these rules: https://xmlvalid.com/validate