TaxItem — VeriFactu Invoice Tax Breakdown (Desglose)

using VeriFactu.Business;
using VeriFactu.Xml.Factu;
using VeriFactu.Xml.Factu.Alta;

// Standard 21 % IVA line — general regime
var standardLine = new TaxItem
{
    TaxScheme = ClaveRegimen.RegimenGeneral,
    TaxType   = CalificacionOperacion.S1,
    TaxRate   = 21,
    TaxBase   = 1000,
    TaxAmount = 210
};

// Reduced 10 % IVA line
var reducedLine = new TaxItem
{
    TaxScheme = ClaveRegimen.RegimenGeneral,
    TaxType   = CalificacionOperacion.S1,
    TaxRate   = 10,
    TaxBase   = 500,
    TaxAmount = 50
};

// Exempt line — Article 20 LIVA (E1)
var exemptLine = new TaxItem
{
    TaxException = CausaExencion.E1,
    TaxBase      = 750
    // TaxRate, TaxAmount, TaxRateSurcharge, TaxAmountSurcharge must stay at 0
};

// Non-subject line (N1) — no rate or amount fields
var nonSubjectLine = new TaxItem
{
    TaxType = CalificacionOperacion.N1,
    TaxBase = 200
};

// Equivalence surcharge (recargo de equivalencia) — 21 % + 5.2 % surcharge
var surchargeItem = new TaxItem
{
    TaxScheme          = ClaveRegimen.RegimenEspecialRecargo,
    TaxType            = CalificacionOperacion.S1,
    TaxRate            = 21,
    TaxBase            = 1000,
    TaxAmount          = 210,
    TaxRateSurcharge   = 5.2m,
    TaxAmountSurcharge = 52
};

var invoice = new Invoice("FAC-2024-002", new DateTime(2024, 11, 15), "B72877814")
{
    InvoiceType = TipoFactura.F1,
    SellerName  = "MI EMPRESA SL",
    TaxItems    = new List<TaxItem> { standardLine, reducedLine }
};