A discount can be applied at the item level or globally. Below is an example for each case:
Item discount
Line-item discounts are applied directly to each item. When a discount is present the full_amount is calculated as follows:
full_amount = ((unit_amount - discount) * quantity) + VAT
The discount is applied per unit, excluding VAT.
{
"content": {
"type": "SIMPLIFIED",
"number": "E-3",
"text": "Factura de venta de prendas de vestir",
"full_amount": "50.45",
"items": [
{
"text": "Sombrero",
"quantity": "3",
"unit_amount": "16.52",
"full_amount": "45.45",
"discount":"4.00",
"system": {
"type": "REGULAR",
"category": {
"type": "VAT"
}
}
},
{
"text": "Bufanda",
"quantity": "1",
"unit_amount": "4.13",
"full_amount": "5",
"system": {
"type": "REGULAR",
"category": {
"type": "VAT"
}
}
}
]
},
"metadata": {
"metadata1": "metadata1",
"metadata2": "metadata2"
}
}
Global discount
Global discounts must be included as an additional line in the invoice, with a negative amount.
{
"content": {
"type": "SIMPLIFIED",
"number": "E-1",
"text": "Factura de venta de prendas de vestir",
"full_amount": "980.10",
"items": [
{
"text": "Zapatos",
"quantity": "1",
"unit_amount": "300.00",
"discount": "90.00",
"full_amount": "254.10",
"system": {
"type": "REGULAR",
"category": {
"type": "VAT"
}
}
},
{
"text": "Chaqueta",
"quantity": "1",
"unit_amount": "800.0",
"full_amount": "968.0",
"system": {
"type": "REGULAR",
"category": {
"type": "VAT"
}
}
},
{
"text": "Discount",
"quantity": "1",
"unit_amount": "-200.0",
"full_amount": "-242.0",
"system": {
"type": "REGULAR",
"category": {
"type": "VAT"
}
}
}
]
},
"metadata": {
"metadata1": "metadata1",
"metadata2": "metadata2"
}
}
How should a global discount be represented when multiple VAT rates apply?
A separate global discount line must be created for each VAT rate. If no VAT rate is provided, a default rate of 21% is applied.
{
"text": "Discount",
"quantity": "1",
"unit_amount": "-200.0",
"full_amount": "-242.0",
"system": {
"type": "REGULAR",
"category": {
"type": "VAT"
}
}
},
{
"text": "Discount",
"quantity": "1",
"unit_amount": "-100.0",
"full_amount": "-100.0",
"system": {
"type": "REGULAR",
"category": {
"type": "NO_VAT",
"cause": "TAXABLE_EXEMPT_1"
}
}
}