npm package discovery and stats viewer.

Discover Tips

  • General search

    [free text search, go nuts!]

  • Package details

    pkg:[package-name]

  • User packages

    @[username]

Sponsor

Optimize Toolset

I’ve always been into building performant and accessible sites, but lately I’ve been taking it extremely seriously. So much so that I’ve been building a tool to help me optimize and monitor the sites that I build to make sure that I’m making an attempt to offer the best experience to those who visit them. If you’re into performant, accessible and SEO friendly sites, you might like it too! You can check it out at Optimize Toolset.

About

Hi, 👋, I’m Ryan Hefner  and I built this site for me, and you! The goal of this site was to provide an easy way for me to check the stats on my npm packages, both for prioritizing issues and updates, and to give me a little kick in the pants to keep up on stuff.

As I was building it, I realized that I was actually using the tool to build the tool, and figured I might as well put this out there and hopefully others will find it to be a fast and useful way to search and browse npm packages as I have.

If you’re interested in other things I’m working on, follow me on Twitter or check out the open source projects I’ve been publishing on GitHub.

I am also working on a Twitter bot for this site to tweet the most popular, newest, random packages from npm. Please follow that account now and it will start sending out packages soon–ish.

Open Software & Tools

This site wouldn’t be possible without the immense generosity and tireless efforts from the people who make contributions to the world and share their work via open source initiatives. Thank you 🙏

© 2026 – Pkg Stats / Ryan Hefner

calculadora-iva

v1.0.3

Published

Calculadora de IVA (Impuesto al Valor Agregado) para México con tasas 16%, 8% y 0%

Readme

Calculadora de IVA

Ko-fi BuyMeACoffee

npm version License: MIT Node.js CI

Librería moderna para calcular IVA (Impuesto al Valor Agregado) en México con las 3 tasas oficiales: 16% (general), 8% (frontera) y 0% (exento).

🚀 Características

  • 3 tasas de IVA - 16%, 8% y 0%
  • Cálculo desde subtotal - Obtener IVA y total
  • Cálculo inverso - Obtener subtotal desde total con IVA
  • Múltiples conceptos - Calcula IVA para varios productos
  • Categorías exentas - Identifica productos sin IVA
  • TypeScript ready - Incluye definiciones de tipos
  • Zero dependencies - Totalmente standalone
  • Totalmente probado - Cobertura > 90%

📦 Instalación

npm install calculadora-iva

🔧 Uso

Calcular IVA (desde subtotal)

import { calcularIVA } from 'calculadora-iva';

// IVA al 16% (tasa general)
const resultado = calcularIVA(1000);
console.log(resultado);
// {
//   subtotal: 1000,
//   tasaIVA: 16,
//   iva: 160,
//   total: 1160
// }

// IVA al 8% (zona fronteriza)
const frontera = calcularIVA(1000, 0.08);
console.log(frontera);
// { subtotal: 1000, tasaIVA: 8, iva: 80, total: 1080 }

Calcular subtotal (desde total)

import { calcularSubtotal } from 'calculadora-iva';

// Obtener subtotal desde un total que ya incluye IVA
const desglose = calcularSubtotal(1160);
console.log(desglose);
// {
//   total: 1160,
//   tasaIVA: 16,
//   subtotal: 1000,
//   iva: 160
// }

Múltiples conceptos

import { calcularIVAMultiple } from 'calculadora-iva';

const conceptos = [
  { subtotal: 100, tasa: 0.16, descripcion: 'Laptop' },
  { subtotal: 50, tasa: 0.16, descripcion: 'Mouse' },
  { subtotal: 200, tasa: 0, descripcion: 'Libro' } // Exento
];

const factura = calcularIVAMultiple(conceptos);
console.log(factura.totales);
// {
//   subtotal: 350,
//   iva: 24,
//   total: 374
// }

Usar constantes

import { calcularIVA, IVA_GENERAL, IVA_FRONTERA, IVA_EXENTO } from 'calculadora-iva';

const general = calcularIVA(1000, IVA_GENERAL);   // 16%
const frontera = calcularIVA(1000, IVA_FRONTERA); // 8%
const exento = calcularIVA(1000, IVA_EXENTO);     // 0%

📋 API

calcularIVA(subtotal, tasa?): Object

calcularSubtotal(total, tasa?): Object

calcularTotal(subtotal, tasa?): number

calcularIVAMultiple(conceptos): Object

obtenerTasasIVA(): Object

estaExento(categoria): boolean

💰 Tasas de IVA en México

| Tasa | Porcentaje | Aplicación | |------|------------|------------| | General | 16% | Todo el país | | Fronteriza | 8% | Región fronteriza norte | | Exenta | 0% | Alimentos, medicinas, libros, educación, salud |

📄 Licencia

MIT © Gerardo Lucero

💖 Apoya el Ecosistema Mexicano OSS