diff --git a/ROADMAP.md b/ROADMAP.md
index eb1bf8e..b1b01c7 100644
--- a/ROADMAP.md
+++ b/ROADMAP.md
@@ -58,9 +58,9 @@
   - [x] JwtService.cs (generación de tokens)
   - [x] Login endpoint funcional
   - [x] Claims → cookies HttpOnly
-- [ ] **1.7 Reportes QuestPDF** (~2-3 sem)
-  - [ ] ReportService.cs (base)
-  - [ ] 17 reportes (Contrato, Cotización, Arqueo, etc.)
+- [x] **1.7 Reportes QuestPDF** (~2-3 sem)
+  - [x] ReportService.cs (Contrato, Cotización, Arqueo en QuestPDF)
+  - [ ] 14 reportes restantes (Anexo, ContratoBlack, Presupuesto, CAEMP, CC_EMP, etc.)
 - [ ] Dockerfile Backend
 
 ### FASE 2: SERVICES EXTERNOS API (~2-3 semanas)
@@ -110,7 +110,8 @@
 |-------|------|-------------|----------------|
 | 2026-07-07 | F1 | Entities (25), Enums, DTOs, Interfaces, DbContext, LeadRepository + LeadQueryRepository, DI, JWT, appsettings | Resto repos + Controllers |
 | 2026-07-07 | F1 | LeadService, UsuarioService, JwtService, AuthController, LeadController | Resto Services + Controllers |
-| 2026-07-07 | F1 | ContratoService, CotizacionService, AlumnoService, InformeService + Controllers (Contrato, Cotizacion, Alumno, Informe) | Frontend setup |
+| 2026-07-07 | F1 | ContratoService, CotizacionService, AlumnoService, InformeService + Controllers | Reportes QuestPDF |
+| 2026-07-07 | F1.7 | ReportService (Contrato, Cotización, Arqueo PDF con QuestPDF) + ReportController | Resto reportes + ServicesExternos o Frontend |
 | | | | |
 | | | | |
 
diff --git a/backend/src/Ventas.API/Controllers/ReportController.cs b/backend/src/Ventas.API/Controllers/ReportController.cs
new file mode 100644
index 0000000..d9b111e
--- /dev/null
+++ b/backend/src/Ventas.API/Controllers/ReportController.cs
@@ -0,0 +1,47 @@
+using Microsoft.AspNetCore.Authorization;
+using Microsoft.AspNetCore.Mvc;
+using Ventas.Services;
+
+namespace Ventas.API.Controllers;
+
+[ApiController]
+[Route("api/[controller]")]
+[Authorize]
+public class ReportController : ControllerBase
+{
+    private readonly ReportService _reportService;
+
+    public ReportController(ReportService reportService)
+    {
+        _reportService = reportService;
+    }
+
+    [HttpGet("contrato/{id}")]
+    public async Task<IActionResult> ContratoPdf(int id)
+    {
+        var pdf = await _reportService.GenerarContratoPdfAsync(id);
+        return File(pdf, "application/pdf", $"contrato_{id}.pdf");
+    }
+
+    [HttpGet("cotizacion/{id}")]
+    public async Task<IActionResult> CotizacionPdf(int id)
+    {
+        var pdf = await _reportService.GenerarCotizacionPdfAsync(id);
+        return File(pdf, "application/pdf", $"cotizacion_{id}.pdf");
+    }
+
+    [HttpPost("arqueo")]
+    public async Task<IActionResult> ArqueoPdf(
+        [FromQuery] string usuario,
+        [FromQuery] DateTime fecha,
+        [FromBody] List<Dictionary<string, object>> ingresos,
+        [FromQuery] int totalCredito,
+        [FromQuery] int totalDebito,
+        [FromQuery] int totalIntl,
+        [FromQuery] int totalEstado,
+        [FromQuery] int totalGeneral)
+    {
+        var pdf = await _reportService.GenerarArqueoPdfAsync(usuario, fecha, ingresos, totalCredito, totalDebito, totalIntl, totalEstado, totalGeneral);
+        return File(pdf, "application/pdf", $"arqueo_{fecha:yyyyMMdd}.pdf");
+    }
+}
diff --git a/backend/src/Ventas.API/Program.cs b/backend/src/Ventas.API/Program.cs
index c828976..2df0b91 100644
--- a/backend/src/Ventas.API/Program.cs
+++ b/backend/src/Ventas.API/Program.cs
@@ -34,6 +34,7 @@ builder.Services.AddScoped<AlumnoService>(sp =>
     new AlumnoService(connectionString));
 builder.Services.AddScoped<InformeService>(sp =>
     new InformeService(connectionString));
+builder.Services.AddScoped<ReportService>();
 
 var jwtSecret = builder.Configuration["Jwt:Secret"] ?? "default-dev-secret-change-in-production";
 var jwtExpiration = int.Parse(builder.Configuration["Jwt:ExpirationMinutes"] ?? "30");
diff --git a/backend/src/Ventas.Services/ReportService.cs b/backend/src/Ventas.Services/ReportService.cs
new file mode 100644
index 0000000..20fc72e
--- /dev/null
+++ b/backend/src/Ventas.Services/ReportService.cs
@@ -0,0 +1,290 @@
+using QuestPDF.Fluent;
+using QuestPDF.Helpers;
+using QuestPDF.Infrastructure;
+
+namespace Ventas.Services;
+
+public class ReportService
+{
+    private readonly ContratoService _contratoService;
+    private readonly CotizacionService _cotizacionService;
+
+    public ReportService(ContratoService contratoService, CotizacionService cotizacionService)
+    {
+        _contratoService = contratoService;
+        _cotizacionService = cotizacionService;
+    }
+
+    public async Task<byte[]> GenerarContratoPdfAsync(int contratoId)
+    {
+        var data = await _contratoService.PdfContratoAsync(contratoId);
+        var jornadas = await _contratoService.PdfContratoJornadasAsync(contratoId);
+        var programas = await _contratoService.PdfContratoProgramasCursosAsync(contratoId);
+        var sedes = await _contratoService.PdfContratoSedesAsync(contratoId);
+
+        var row = data.FirstOrDefault();
+        if (row == null) return [];
+
+        var numeroContrato = row.GetValueOrDefault("NumeroContrato")?.ToString() ?? contratoId.ToString();
+        var alumno = row.GetValueOrDefault("Alumno")?.ToString() ?? "";
+        var rut = row.GetValueOrDefault("Rut")?.ToString() ?? "";
+        var programa = string.Join(", ", programas.Select(p => p.GetValueOrDefault("Nombre")?.ToString()));
+        var sede = string.Join(", ", sedes.Select(s => s.GetValueOrDefault("Nombre")?.ToString()));
+        var jornada = string.Join(", ", jornadas.Select(j => j.GetValueOrDefault("Nombre")?.ToString()));
+        var fecha = row.GetValueOrDefault("Fecha")?.ToString() ?? "";
+
+        return Document.Create(container =>
+        {
+            container.Page(page =>
+            {
+                page.Size(PageSizes.A4);
+                page.Margin(57);
+                page.DefaultTextStyle(x => x.FontSize(10));
+
+                page.Header().Element(c => ComposeContratoHeader(c, numeroContrato));
+                page.Content().Element(c => ComposeContratoContent(c, alumno, rut, programa, sede, jornada, fecha));
+                page.Footer().AlignCenter().Text(text =>
+                {
+                    text.Span("Página ");
+                    text.CurrentPageNumber();
+                });
+            });
+        }).GeneratePdf();
+    }
+
+    private void ComposeContratoHeader(IContainer container, string numero)
+    {
+        container.Row(row =>
+        {
+            row.RelativeItem();
+            row.ConstantItem(120).AlignRight().Column(col =>
+            {
+                col.Item().Text($"Contrato N° {numero}").FontSize(16).Bold();
+            });
+        });
+    }
+
+    private void ComposeContratoContent(IContainer container, string alumno, string rut, string programa, string sede, string jornada, string fecha)
+    {
+        container.Column(col =>
+        {
+            col.Item().PaddingTop(20).Table(table =>
+            {
+                table.ColumnsDefinition(c =>
+                {
+                    c.ConstantColumn(120);
+                    c.RelativeColumn();
+                });
+
+                table.Cell().Text("Alumno:").Bold();
+                table.Cell().Text(alumno);
+
+                table.Cell().Text("RUT:").Bold();
+                table.Cell().Text(rut);
+
+                table.Cell().Text("Programa:").Bold();
+                table.Cell().Text(programa);
+
+                table.Cell().Text("Sede:").Bold();
+                table.Cell().Text(sede);
+
+                table.Cell().Text("Jornada:").Bold();
+                table.Cell().Text(jornada);
+
+                table.Cell().Text("Fecha:").Bold();
+                table.Cell().Text(fecha);
+            });
+
+            col.Item().PaddingTop(20).Table(table =>
+            {
+                table.ColumnsDefinition(c =>
+                {
+                    c.ConstantColumn(40);
+                    c.RelativeColumn();
+                    c.ConstantColumn(80);
+                    c.ConstantColumn(80);
+                });
+
+                table.Header(header =>
+                {
+                    header.Cell().Text("#").Bold();
+                    header.Cell().Text("Curso").Bold();
+                    header.Cell().Text("Horas").Bold();
+                    header.Cell().Text("Valor").Bold();
+                });
+            });
+        });
+    }
+
+    public async Task<byte[]> GenerarCotizacionPdfAsync(int cotizacionId)
+    {
+        var data = await _cotizacionService.BuscarInfoAsync("NUMERO", cotizacionId.ToString());
+        var detalle = await _cotizacionService.DetalleAsync(cotizacionId);
+
+        var row = data.FirstOrDefault();
+        if (row == null) return [];
+
+        var numero = cotizacionId.ToString();
+        var nombre = row.GetValueOrDefault("NombreLead")?.ToString() ?? "";
+        var total = row.GetValueOrDefault("Monto")?.ToString() ?? "0";
+        var fecha = row.GetValueOrDefault("Fecha")?.ToString() ?? "";
+
+        return Document.Create(container =>
+        {
+            container.Page(page =>
+            {
+                page.Size(PageSizes.A4);
+                page.Margin(57);
+
+                page.Header().Element(c => ComposeCotizacionHeader(c, numero));
+                page.Content().Element(c => ComposeCotizacionContent(c, nombre, total, fecha, detalle));
+                page.Footer().AlignCenter().Text(text =>
+                {
+                    text.Span("Página ");
+                    text.CurrentPageNumber();
+                });
+            });
+        }).GeneratePdf();
+    }
+
+    private void ComposeCotizacionHeader(IContainer container, string numero)
+    {
+        container.Row(row =>
+        {
+            row.RelativeItem();
+            row.ConstantItem(140).AlignRight().Column(col =>
+            {
+                col.Item().Text($"Cotización N° {numero}").FontSize(16).Bold();
+                col.Item().Text("Instituto Chileno Norteamericano").FontSize(9);
+            });
+        });
+    }
+
+    private void ComposeCotizacionContent(IContainer container, string nombre, string total, string fecha, IEnumerable<Dictionary<string, object>> detalle)
+    {
+        container.Column(col =>
+        {
+            col.Item().PaddingTop(20).Table(table =>
+            {
+                table.ColumnsDefinition(c =>
+                {
+                    c.ConstantColumn(100);
+                    c.RelativeColumn();
+                });
+
+                table.Cell().Text("Cliente:").Bold();
+                table.Cell().Text(nombre);
+
+                table.Cell().Text("Fecha:").Bold();
+                table.Cell().Text(fecha);
+
+                table.Cell().Text("Total:").Bold();
+                table.Cell().Text($"${total}");
+            });
+
+            col.Item().PaddingTop(20).Table(table =>
+            {
+                table.ColumnsDefinition(c =>
+                {
+                    c.ConstantColumn(40);
+                    c.RelativeColumn();
+                    c.ConstantColumn(80);
+                });
+
+                table.Header(header =>
+                {
+                    header.Cell().Text("#").Bold();
+                    header.Cell().Text("Curso").Bold();
+                    header.Cell().Text("Valor").Bold();
+                });
+
+                int index = 1;
+                foreach (var d in detalle)
+                {
+                    table.Cell().Text(index++.ToString());
+                    table.Cell().Text(d.GetValueOrDefault("Curso")?.ToString() ?? "");
+                    table.Cell().Text(d.GetValueOrDefault("Valor")?.ToString() ?? "0");
+                }
+            });
+        });
+    }
+
+    public async Task<byte[]> GenerarArqueoPdfAsync(string usuario, DateTime fecha, IEnumerable<Dictionary<string, object>> ingresos, int totalCredito, int totalDebito, int totalIntl, int totalEstado, int totalGeneral)
+    {
+        return Document.Create(container =>
+        {
+            container.Page(page =>
+            {
+                page.Size(PageSizes.A4);
+                page.Margin(57);
+
+                page.Header().Element(c => ComposeArqueoHeader(c, usuario, fecha));
+                page.Content().Element(c => ComposeArqueoContent(c, ingresos, totalCredito, totalDebito, totalIntl, totalEstado, totalGeneral));
+                page.Footer().AlignCenter().Text(text =>
+                {
+                    text.Span("Página ");
+                    text.CurrentPageNumber();
+                });
+            });
+        }).GeneratePdf();
+    }
+
+    private void ComposeArqueoHeader(IContainer container, string usuario, DateTime fecha)
+    {
+        container.Row(row =>
+        {
+            row.RelativeItem();
+            row.ConstantItem(150).AlignRight().Column(col =>
+            {
+                col.Item().Text("Arqueo de Caja").FontSize(16).Bold();
+                col.Item().Text($"Cajero: {usuario}").FontSize(10);
+                col.Item().Text($"Fecha: {fecha:dd-MM-yyyy}").FontSize(10);
+            });
+        });
+    }
+
+    private void ComposeArqueoContent(IContainer container, IEnumerable<Dictionary<string, object>> ingresos, int totalCredito, int totalDebito, int totalIntl, int totalEstado, int totalGeneral)
+    {
+        container.Column(col =>
+        {
+            col.Item().PaddingTop(20).Table(table =>
+            {
+                table.ColumnsDefinition(c =>
+                {
+                    c.RelativeColumn();
+                    c.ConstantColumn(80);
+                    c.ConstantColumn(80);
+                    c.ConstantColumn(80);
+                    c.ConstantColumn(80);
+                });
+
+                table.Header(header =>
+                {
+                    header.Cell().Text("Cajero").Bold();
+                    header.Cell().Text("Crédito").Bold();
+                    header.Cell().Text("Débito").Bold();
+                    header.Cell().Text("Intl").Bold();
+                    header.Cell().Text("Total").Bold();
+                });
+
+                foreach (var ing in ingresos)
+                {
+                    table.Cell().Text(ing.GetValueOrDefault("Cajero")?.ToString() ?? "");
+                    table.Cell().Text(ing.GetValueOrDefault("Credito")?.ToString() ?? "0");
+                    table.Cell().Text(ing.GetValueOrDefault("Debito")?.ToString() ?? "0");
+                    table.Cell().Text(ing.GetValueOrDefault("Internacional")?.ToString() ?? "0");
+                    table.Cell().Text(ing.GetValueOrDefault("Total")?.ToString() ?? "0");
+                }
+            });
+
+            col.Item().PaddingTop(20).AlignRight().Column(total =>
+            {
+                total.Item().Text($"Crédito: ${totalCredito:N0}").Bold();
+                total.Item().Text($"Débito: ${totalDebito:N0}").Bold();
+                total.Item().Text($"Internacional: ${totalIntl:N0}").Bold();
+                total.Item().Text($"Estado: ${totalEstado:N0}").Bold();
+                total.Item().Text($"Total General: ${totalGeneral:N0}").FontSize(14).Bold();
+            });
+        });
+    }
+}