Finance & Property · Introduction
Fixed Deposit Calculator
Compare simple interest, compounding and monthly payouts. Simple interest is the default.
Updated 2026-10-25 · ThinkVault Tools
What can this tool help you do?
Compare simple interest, compounding and monthly payouts. Simple interest is the default.
Check the purpose and assumptions, then open the tool. Return to the guide for details.
How is fixed-deposit interest calculated?
How is fixed-deposit interest calculated?
Assume 100,000 currency units at 4% for 6 months: simple interest is 100,000 × 4% × 6/12 = 2,000, with about 102,000 units at maturity. Use one currency for all amounts; the values are examples only.
Simple, compound and monthly payout
- Simple: interest on the original principal only. Check whether your product actually uses simple interest, compounding or payouts; no method is assumed to apply to every bank or jurisdiction.
- Compound: interest is added to principal and earns interest itself; only applies if the product truly rolls over.
- Monthly payout: annual interest estimated and paid monthly; the principal does not grow.
Method
Simple interest, annual compounding and monthly-payout scenarios; no live bank rates are loaded or compared.
Last checked: 2026-10-24
Before you begin
Tax, lending, holiday and protection rules vary by place and date. Check current local rules and provider terms. Results are estimates.