Fixed Deposit Calculator – Calculate FD Interest & Maturity Amount

This free Fixed Deposit Calculator shows you exactly what your FD will be worth when it matures. Just plug in your deposit amount, the interest rate your bank is paying, and how long you’re locking the money away — and it instantly tells you your maturity amount, how much interest you earned, and the growth multiple. Works with any bank, any currency, any tenure from months to years.

Maturity Amount
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Principal
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Interest Earned
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Growth Multiple
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Your FD Maturity Value
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Enter your details to calculate
Detail Value

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Quick heads up — what you’re seeing is a projection based on the fixed rate you enter. FD rates offered by banks can change before you open or renew a deposit. Once you lock a fixed-rate FD, the applicable rate is generally determined by the deposit terms. Different banks may also use their own rounding rules, so treat this for planning and comparison rather than as a replacement for your bank’s official statement.

💱 Currency note: You won’t see any currency symbols here — that’s deliberate. Use whatever currency you like (INR, USD, EUR, GBP, PKR, anything) and just stick with the same one from start to finish. This tool doesn’t convert between currencies.

What Is a Fixed Deposit Calculator?

A Fixed Deposit Calculator is a tool that tells you exactly what your FD will be worth at maturity. You feed it three things — your deposit amount, the interest rate your bank is offering, and how long you’re locking the money away — and it hands you back your maturity amount, the total interest you earned, and the growth multiple.

The real value of running one is comparison. Before you commit to a 5-year FD at one bank, don’t you want to know what the same amount would look like at 6.5% instead of 7%? Or what a 3-year term would earn compared to 5? An FD maturity amount calculator gives you those answers in seconds, and that clarity matters when you’re making a decision you can’t easily reverse.

How to Use This Fixed Deposit Calculator

Using this is about as easy as it gets. Here’s the whole process.

Step 1 — Put in your deposit amount. This is the principal — the lump sum you’re putting into the FD. Enter whatever you’re actually planning to deposit. No minimum or maximum on this tool.

Step 2 — Enter the annual interest rate. Whatever rate your bank is offering. Rates vary between banks, between tenures, and between countries, and they shift with the broader interest rate environment. If you’re not sure what yours pays, check the bank’s website or ask at the branch. Senior citizens often get a slightly better rate — worth checking if it applies to you.

Step 3 — Enter the tenure, and pick your unit. You can enter the tenure in years or months — the toggle next to the input handles both. Shorter FDs are often quoted in months (like 6 months or 18 months), while longer ones are usually in years. Either way works here. Longer tenures usually mean higher total interest, but you’ll want to be comfortable with the money being locked for that long.

Step 4 — Pick your compounding frequency. This is how often interest gets added back to the principal and starts earning its own interest. Quarterly is a common choice for FDs in many markets, so it’s the default here — but check what your specific bank uses, since the convention can vary by institution and country. Monthly, semi-annual, and annual options are also there if you want to model those.

Step 5 — Read the numbers. The right panel shows your maturity amount, the original principal, the interest earned, and the growth multiple. There’s a breakdown table below with more detail. You can copy the result or save it as a PDF if you want a record.

The Fixed Deposit Formula Explained

You don’t need to understand the math to use the calculator, but knowing what’s happening under the hood makes the numbers much more meaningful — and it helps you spot when a projection might be too optimistic.

Many fixed deposits use compound-interest calculations, but the compounding and interest-crediting method varies by bank and country. Under the standard compound-interest approach, the formula looks like this:

M = P × (1 + r/n)^(n×t)

Where:

  • M is the maturity amount.
  • P is your principal (the deposit amount).
  • r is the annual interest rate as a decimal (7% = 0.07).
  • n is how many times interest compounds per year (4 for quarterly, 12 for monthly).
  • t is the tenure in years.

In plain English: your money grows at a rate that speeds up every time interest gets added back. The more often interest compounds, the faster the balance grows — though the difference between, say, monthly and quarterly is pretty small in practice.

The magic lives in that exponent. If you deposit 1,00,000 at 7% for 5 years with quarterly compounding, your money doesn’t grow in a straight line — it curves upward. You earn less interest in year one than in year five, because by year five your interest is itself earning interest. That’s why longer tenures reward you disproportionately, and why stretching a 3-year FD to 5 years adds much more than a simple proportion would suggest.

One important caveat: banks can follow slightly different methods. Some compound quarterly, some monthly, and a few use their own rounding conventions. The differences are usually small — often just a few rupees — but if you compare your calculator’s result against a bank statement and spot a small gap, that’s usually why.

Fixed Deposit vs Recurring Deposit — Which One Fits?

Both are safe, straightforward ways to save with a bank. Both pay fixed interest. But they suit different situations.

A Fixed Deposit (FD) is a single lump sum you deposit once, and it grows for the chosen tenure. If you already have a chunk of money sitting idle — a bonus, maturity proceeds, accumulated savings, sale of an asset — an FD is usually the simplest way to lock it in at a good rate.

A Recurring Deposit (RD) is a series of monthly deposits, all earning the same rate. If you don’t have a lump sum but you do have steady monthly income, an RD lets you build up the same kind of disciplined savings without needing the full amount upfront.

Feature Fixed Deposit Recurring Deposit
Deposit type One-time lump sum Monthly instalments
Best for People with idle cash Regular savers, salaried employees
Interest rate Typically similar to RD rates Typically similar to FD rates
Compounding Usually quarterly Usually quarterly
Flexibility One-time commitment Fixed monthly commitment
Discipline required Low (one decision) High (monthly deposits)

If you’re not sure which one suits you, think about where the money is coming from. If it’s already sitting in your account doing nothing, an FD puts it to work right away. If it’s arriving in monthly salary credits, an RD matches that rhythm.

Worked Examples You Can Actually Relate To

Numbers on a screen are dry. Let’s walk through a few realistic scenarios so you can see how the pieces fit together. All examples use quarterly compounding.

Example 1: A Small Short-Term FD

You’ve got 1,00,000 to lock into a 5-year FD at 7% annual interest, with quarterly compounding.

  • Principal: 1,00,000
  • Interest rate: 7% per year, compounded quarterly
  • Tenure: 5 years
  • Maturity amount: approximately 1,41,478
  • Interest earned: roughly 41,478
  • Growth multiple: about 1.415×

You didn’t touch the money for five years, and it grew by over 40%. That’s compounding doing the work — no effort required on your part.

Example 2: A Medium-Term FD at a Higher Rate

You put 5,00,000 into a 3-year FD at 7.5%, quarterly compounding.

  • Principal: 5,00,000
  • Interest rate: 7.5% per year, compounded quarterly
  • Tenure: 3 years
  • Maturity amount: approximately 6,24,858
  • Interest earned: roughly 1,24,858
  • Growth multiple: about 1.250×

Even a modest rate bump makes a real difference at scale. The 0.5% extra rate on 5 lakh over three years adds more than 15,000 in interest compared to a 7% rate.

Example 3: A Shorter FD at a Lower Rate

You put 2,00,000 into a 2-year FD at 6.5%, quarterly compounding.

  • Principal: 2,00,000
  • Interest rate: 6.5% per year, compounded quarterly
  • Tenure: 2 years
  • Maturity amount: approximately 2,27,528
  • Interest earned: roughly 27,528
  • Growth multiple: about 1.138×

Short tenures don’t produce dramatic compounding, but they give you quick liquidity without losing the guaranteed return. Perfect if you know you’ll need the money in a couple of years.

Example 4: A Long-Term FD for Serious Compounding

You put 10,00,000 into a 10-year FD at 7%, quarterly compounding.

  • Principal: 10,00,000
  • Interest rate: 7% per year, compounded quarterly
  • Tenure: 10 years
  • Maturity amount: approximately 20,01,597
  • Interest earned: roughly 10,01,597
  • Growth multiple: about 2.002×

Over 10 years, your money literally doubles. That’s the quiet power of compound interest — and it’s why people with idle capital often choose long-tenure FDs to park it safely.

Understanding Fixed Deposit Interest Rates

FD interest rates are set by the bank, and they vary widely depending on a few factors.

  • Tenure matters. Longer tenures usually pay slightly higher rates, though this isn’t always true. Some banks have a sweet spot where the best rate is at 1 or 2 years, and longer tenures pay the same or even less.
  • Senior citizens often get a bump. Many banks offer an extra 0.25% to 0.50% for senior citizens, though the exact difference varies by institution and country.
  • Smaller banks and NBFCs may pay more. Rates at small finance banks or non-banking financial companies can be meaningfully higher than what traditional banks offer. Just check deposit insurance limits and the institution’s financial health.
  • Rates change with the environment. When central banks cut or raise benchmark rates, FD rates follow. A rate you lock today stays for the entire tenure — that’s the whole point of an FD. So a rate that looks great now might look less exciting in a year, and vice versa.

If you’re deciding between two banks, the difference in a fixed deposit interest rate calculator’s output might look small in absolute terms. But over 5 or 10 years, even a small difference in rate adds up to serious money. Worth running the numbers on both.

Things to Keep in Mind About Fixed Deposits

A fixed deposit return calculator gives you a number. What you do with that number is what determines whether the FD actually serves your goals. A few practical points worth keeping in mind:

Premature withdrawal usually costs you. If you need the money before the tenure ends, banks typically charge a penalty — often around 0.5% to 1% off the applicable interest rate. The maturity amount you’d have received drops meaningfully. Only break an FD early if you genuinely have to.

Interest is usually taxable. In most countries, FD interest is taxed as ordinary income. Many banks deduct tax at source once interest crosses a threshold, and you’re expected to report it on your tax return. The calculator shows gross interest, not post-tax interest. If you want a more realistic view of what you actually keep, mentally subtract your marginal tax rate from the interest figure.

Inflation eats into real returns. If your FD earns 7% but inflation is running at 6%, your real return is only about 1%. Over short tenures, that’s fine — you’re prioritising safety over growth. Over long tenures, it’s worth asking whether a different instrument might serve you better.

Laddering can be smart. Instead of putting all your money into a single long-term FD, some people split it across multiple FDs with staggered maturities. This gives you regular access to cash without breaking the entire deposit early. A fixed deposit maturity calculator is handy for planning a ladder.

FDs are safe but not exciting. Deposit insurance protects your money up to the applicable limit in most countries — the specific coverage limit, terms, and insurer vary by jurisdiction. That’s genuinely reassuring, but it also means FD rates are modest. Don’t expect FD returns to beat inflation by a wide margin over the long term.

Fixed Deposits Around the World

FDs are most popular in India and South Asia, but similar products exist in many countries under different names. The core idea — a lump sum earning compound interest for a fixed period — is universal.

India. Fixed deposits are a standard offering at almost every bank and post office. Tenures typically range from 7 days to 10 years, and rates are usually higher for longer tenures. Post office time deposits have fixed rates set by the government.

United States. The closest equivalent is a Certificate of Deposit (CD), offered by most banks and credit unions. CDs work almost identically to FDs, though the terminology and disclosure requirements differ. FDIC insurance covers deposits up to $250,000 per depositor per bank.

Europe and the UK. Fixed-rate bonds, term deposits, and notice accounts fill the same role. Deposit guarantee schemes generally protect savings up to a set limit per depositor per bank, with the exact figure varying by country.

Middle East and Pakistan. Fixed deposits are widely offered by both conventional and Islamic banks. Islamic versions typically structure the returns as profit-sharing rather than interest, but the underlying math for compounding and tenure works the same way.

Wherever you are, the same practical advice holds: match the tenure to your goal, compare rates between institutions, and don’t break the FD unless you genuinely need to.

If this FD calculator was useful, these related tools might round out your financial planning.

Additional Financial Resources

For a plain-English overview of fixed deposits and certificates of deposit — how they work, what to look for, and how they compare with other savings products — the Investopedia guide on fixed deposits is a solid reference.

For official banking-related resources in India, including deposit schemes and consumer awareness material, the Reserve Bank of India (RBI) website publishes regulator-endorsed information on deposits, interest rates, and bank consumer protections.

Frequently Asked Questions About Fixed Deposits

It’s a tool that works out how much your fixed deposit will be worth when it matures. You enter your deposit amount, the annual interest rate, and the tenure, and it shows you the maturity amount, total interest earned, and growth multiple.
Many banks use compound interest, with quarterly compounding being a common convention in several markets. The formula is M = P × (1 + r/n)^(n×t), where n is the number of times interest compounds per year. Banks can follow different methods, so it’s worth confirming the exact approach with yours.
Neither is universally better. FDs suit people who already have a lump sum ready to invest. RDs suit people with regular monthly income who want to build savings gradually. Both usually pay similar interest rates for the same tenure.
Depends on the bank. Many banks offer tenures starting at 7 days going up to 10 years, while others offer shorter or longer options. Check with your bank for their specific tenures.
Yes, most banks allow premature withdrawal, but they often charge a penalty — usually a small reduction in the applicable interest rate. The maturity amount you’d have received drops, so it’s best to break an FD early only if you really need the money.
Usually not. FDs are typically fixed at the principal amount you deposit when opening the account. If you want to invest more, most banks suggest opening a second FD. Some banks offer top-up FDs as a special product, but that’s not standard.
In most countries, yes. Interest earned on an FD is usually treated as ordinary income and is taxable. Many banks deduct tax at source if interest crosses a threshold. The calculator shows gross interest, not post-tax.
Cumulative FDs reinvest the interest and pay everything at maturity — that’s what most calculators model. Non-cumulative FDs pay out interest periodically (monthly, quarterly, or annually) and give you the principal back at maturity. Cumulative FDs usually produce a higher total return because the interest compounds.
In most countries, deposit insurance covers FD balances up to a certain limit per depositor per bank. The specific coverage limit, terms, and insurer vary by jurisdiction — check with your bank or local regulator for the specifics that apply to you.
It uses the standard compound interest formula with quarterly compounding as the default, since that’s a common convention in many markets. Your bank may use a different compounding method, rounding rule, or interest crediting convention, so its official maturity figure should be treated as final.

⚠️ Disclaimer: The results from this calculator are mathematical projections based on the inputs you provide. They are for educational and informational purposes only and should not be treated as financial, tax, or investment advice. Actual FD maturity amounts can vary slightly based on your bank’s specific calculation method. Please confirm final figures with your bank before making decisions.