Guides
Short, practical explainers behind the calculators — the formulas, worked examples, and the mistakes to avoid.
How EMI Is CalculatedUnderstand how your monthly loan installment (EMI) is calculated, with the formula, a worked example in rupees, and tips to pay less interest.How Zakat Is CalculatedA clear guide to calculating Zakat: what counts as zakatable wealth, the nisab threshold, the 2.5% rate, and a worked example.Margin vs Markup: What’s the Difference?Margin and markup are not the same. Learn the difference, the formulas, a conversion table, and which one to use when pricing products.GST & Sales Tax: Adding and Removing It CorrectlyHow to add GST/sales tax to a price, and how to correctly extract the tax from a tax-inclusive amount (it is not the same percentage).How to Set Your Freelance Hourly RateA practical method to set a freelance hourly rate that actually covers your income goal, expenses and unbillable time — with a worked example.