UK Tax Module

A Node.js module that provides simple tax calculations for income tax and national insurance tax.

Installation

npm install uk_tax_calc

Example Use

import { calculateIncomeTaxDetailed } from 'uk_tax_calc'

try {
    const incomeTax = calculateIncomeTaxDetailed(30000, '2024/25');
    console.log('Income Tax ' + year + ': ', incomeTax);
}
catch (error) {
    console.error(error.message);  // Outputs: "Invalid income: Must be a positive number."
}

TODO

• add Scottish rates
• check the 2023 rates
• account for mid year changes to NI