FD Calculator – Fixed Deposit Maturity & Interest | INDwallet
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FD Calculator – Know your maturity & interest

Adjust principal, rate & tenure — see instant maturity, interest earned, effective yield, and annual compounding. 100% private, no data stored. India-first fixed deposit planning in your browser.

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Step 1 · Interactive

Run your FD calculation

Move any slider to see instant results. Three variables — principal, interest rate, and tenure — control everything. All computed locally in your browser using annual compounding.

  • Annual compounding at 7% p.a. default
  • Principal vs interest bar chart + live narrative
  • Every slider updates the story and FAQ values live
🎛️
Your FD parameters Slide to adjust — see maturity change instantly
Principal amount (₹)1,00,000
Interest rate (%) p.a.7.0%
Tenure (years)5 yrs
₹1,40,255
📈 Total Interest₹40,255
⚡ Effective Yield (CAGR)8.0%
💡 Insight: Compounding amplifies returns over longer tenures.
₹1,00,000
🏦 Principal
₹1,40,255
📈 Maturity
₹40,255
💰 Interest
8.0%
⚡ Effective Yield
📊
Principal vs interestUpdates live with every slider move
📊Gold: Principal · Green: Interest
Principal: ₹1,00,000 · Interest: ₹40,255
📖
Your FD story Based on current selection
Live

With a one-time investment of ₹1,00,000 for 5 years at 7.0% p.a., your maturity amount will be ₹1,40,255. Interest earned: ₹40,255 — that’s an effective annual yield of 8.0%. Longer tenure significantly boosts compounding.

See the number? Now act on it: track the FD →  ·  model tax on interest →

Step 2 · Deep dive

How FD interest works

Three concepts, one formula. Understanding annual compounding makes it easy to compare FD options and plan maturities.

📘
FD interest calculationAnnual compounding formula
  • Formula: A = P × (1 + r)^t — where P is principal, r is annual rate, t is tenure in years. For quarterly compounding banks use A = P × (1 + r/4)^(4t), slightly more than this calculator.
  • Effective yield (CAGR): ((1 + r)^t − 1) × 100 — total return expressed as an annualised percentage. Your yield is 8.0%.
  • Why tenure matters: Compounding is exponential. Doubling tenure more than doubles interest on longer tenures.
  • Compare with RD: For monthly savings, use the RD Calculator — the math is similar but the principal accumulates monthly.
Step 3 · Real-life example

How Meera & Vikram planned their FDs

Two common FD investors — different goals, different tenures. Both used the calculator to plan for safety, yield, and tax efficiency before locking money away.

👥
Real-life example: Meera & VikramHow FD planning secured two different futures
  • Meera’s ₹15L windfall: Inherited from a relative, she parked it in a 3-year FD at 7.2%. The calculator showed ₹1.86L in interest — enough to fund her daughter’s tuition in 3 years without touching principal.
  • Laddering strategy: Rather than one big FD, Meera split ₹15L into 1L, 3L, 5L, 6L across 1/3/5/7 year tenures. Use the laddering pattern from the practices section below.
  • Vikram’s ₹5L emergency cushion: Kept 2 months in savings (liquid) and the rest in a 1-year FD. When a job change hit, the FD matured exactly when he needed it — no penalty.
  • Tax reality: Vikram’s FD interest of ₹35K/year was below the ₹40K TDS threshold. Meera, with ₹1.86L interest, paid 10% TDS + slab rate — she modelled this with the Tax Regime Simulator.
  • Senior parents’ FDs: Meera’s father, 65, gets +0.5% senior citizen rate. His ₹10L FD earns ₹85,000/year at 8.5% — tax-free up to ₹50K under Section 80TTB.
  • Premature withdrawal penalty: Vikram learnt that breaking an FD mid-term costs 0.5–1% in reduced rate. He kept the ₹5L accessible via a sweep-in FD instead of one rigid lock-in.
  • Tracking everything: Both track FDs in the Wealth Wallet so maturity dates never sneak up on them.
Step 4 · Playbook

FD best practices & strategies

Six rules that turn FD knowledge into real safety and returns. Values below update live with your slider selections — this is your interactive playbook.

  • Ladder tenures to balance liquidity and yield
  • Compare small finance banks vs major banks
  • Account for tax before comparing returns
✅
Your live FD playbookAuto-updated from sliders
  • Current rate: 7.0% — compare with small finance banks (up to 8.5%).
  • Laddering: Split corpus across 1-, 3-, and 5-year FDs to balance liquidity & yield.
  • Taxation: Interest ₹40,255 is added to income; consider tax-saving FDs (5yr lock-in). Use Tax Simulator.
  • Senior citizen benefit: Extra 0.25–0.5% rate if eligible.
  • Avoid premature withdrawal: Penalty reduces effective yield.
  • Reinvest interest: Cumulative option (default) maximises compounding.
Step 5 · Read more

Fixed deposit articles

Six India-first guides covering what shows up most in our inbox — FD formula, tax rules, laddering, cumulative vs non-cumulative, senior benefits, and best rates.

  • Six focused guides
  • Covers every calculator assumption in depth
  • All at INDwallet blog
FD Formula

FD Interest Calculation India: Formula & Examples (2026)

How banks compute your fixed deposit maturity step by step.

Read → Tax Rules

FD Tax Rules India 2026: TDS, 80TTB & Tax-Saving FDs

Maximise post-tax returns with smart FD tax planning.

Read → Laddering

FD Laddering Strategy India: How to Balance Yield & Liquidity

Split your corpus across tenures for better cash flow.

Read → Cumulative

Cumulative vs Non-Cumulative FD: Which Is Better for You?

Reinvest interest vs regular payouts — the math matters.

Read → Senior Citizens

Senior Citizen FD Benefits India: Extra Interest & Tax Advantage

0.5% higher rates and Section 80TTB deductions explained.

Read → Rates

Best FD Interest Rates in India 2026: Bank-wise Comparison

Where to park your fixed deposit for the highest safe returns.

Read →
📱 INDwallet app · on Base44

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Goals & sync, hosted on Base44.

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Step 6 · Answers

Frequently asked questions

🏦 FD Basics
What is a fixed deposit and how does it work in Indian banks?
A fixed deposit (FD) is a lump-sum investment where you lock money for a chosen tenure at a guaranteed interest rate. The bank pays interest compounded quarterly (usually). Your current FD of ₹1,00,000 at 7.0% for 5 yrs will mature at ₹1,40,255. Track your overall wealth in the Wealth Wallet.
How is fixed deposit interest calculated, and what is the compound interest formula?
Banks use the formula A = P × (1 + r/n)^(n×t), where P is principal, r is annual rate, n = 4 (quarterly compounding), t = years. For annual compounding (simpler calculator), A = P × (1 + r)^t. Your effective yield (CAGR) is 8.0%. Interest earned = ₹40,255. Compare with RD Calculator for monthly savings.
📈 Returns & Strategy
What is a good FD interest rate in India today, and which banks offer the highest rates?
Currently 7.0% is competitive for major banks. Small finance banks and NBFCs often offer 0.5–1.5% higher. Senior citizens get an additional 0.25–0.5%. Use the Tax Regime Simulator to compare post-tax returns.
How does the tenure of a fixed deposit affect the final maturity amount?
Longer tenure dramatically increases compounding. Your 5-year FD earns ₹40,255 in interest. Extending to 10 years more than doubles the interest earned. For goal-based planning, use the Savings Sprint Simulator.
💰 Tax & Premature Withdrawal
Is fixed deposit interest taxable in India, and what are the TDS rules?
Yes, FD interest is fully taxable as per your income tax slab. TDS is deducted at 10% if annual interest across all deposits exceeds ₹40,000 (₹50,000 for senior citizens). Your interest of ₹40,255 over 5 years is taxable annually. Consider tax-saving FDs (5-year lock-in) under Section 80C. Use the Tax Simulator to estimate liability.
Can I break my fixed deposit before maturity, and what is the penalty?
Yes, but banks charge a premature withdrawal penalty, typically 0.5% to 1% reduction in the applicable interest rate. This can significantly reduce your effective yield. To avoid this, build an emergency fund first using the Emergency Fund Calculator.
🔄 FD vs Other Instruments
Fixed deposit vs recurring deposit (RD) – which is better for my savings goal?
FD is ideal for lump-sum investments, while RD suits monthly savings. For goal-based comparisons, use the RD Calculator alongside this FD Calculator. For long-term wealth, also explore Investment Wallet for equity SIPs.
How does FD compare with debt mutual funds for post-tax returns in India?
Debt mutual funds held for over 3 years get indexation benefit, reducing tax on gains. FDs are taxed annually at slab rate. If you’re in the 30% bracket, debt funds may be more tax-efficient. Use the Tax Simulator to compare both scenarios.

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Disclaimer: All content, calculations, scores, personas, styles and recommendations are illustrative and educational. INDwallet is not a registered investment adviser, broker, bank or insurer, and this is not financial, investment, tax, insurance or legal advice. FD rates change frequently. Please verify current rates with your bank before making any deposit decision.

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