How the FD Calculator Works
A Fixed Deposit (FD) is one of India's most popular savings instruments: you deposit a lump sum for a fixed tenure at a fixed interest rate. Indian banks typically compound FD interest quarterly by default (this calculator's default), though monthly, half-yearly, and annual compounding options exist depending on the bank and product.
Non-Cumulative FD: Interest paid out periodically = Principal × Rate × Years (simple interest); Principal returned at maturity
TDS on FD Interest
Banks in India are required to deduct 10% Tax Deducted at Source (TDS) if your total FD interest income across all FDs with that bank exceeds ₹40,000 in a financial year (₹50,000 for senior citizens). If your total annual income is below the taxable threshold, you can submit Form 15G (or Form 15H for senior citizens) to avoid this deduction.
How This Differs From a Generic CD Calculator
This calculator is built specifically around Indian FD conventions: quarterly compounding by default (the common Indian bank practice), a senior-citizen bonus rate toggle, cumulative vs. non-cumulative FD types, and an estimated TDS deduction — details a generic certificate-of-deposit calculator doesn't account for.
โ Frequently Asked Questions
๐ About This Tool โ Accuracy & Trust
๐ Data Privacy: All calculations run entirely within your browser using JavaScript. Nothing you enter here is ever transmitted to our servers, stored, sold, or shared.
๐ Accuracy Note: This tool uses standard, widely published formulas and guidelines. Results are estimates for informational purposes; for financial, medical, or engineering decisions, consult a licensed professional.
๐ Last Updated: September 2026.