The base amount before tax.
The province or territory.
The tax year.
An object containing the breakdown of taxes and the total amount.
const salesTax = getSalesTax(100, "Quebec", 2025);
console.log(salesTax);
// { gst: 5, pst: 9.975, hst: 0, totalTax: 14.975, totalAmount: 114.975 }
Reference: https://www.retailcouncil.org/resources/quick-facts/sales-tax-rates-by-province/
Calculates the Canadian sales tax for a given amount, province, and year.