Post Office FD Calculator
Calculate your Post Office Fixed Deposit maturity amount and interest
📈 Calculation Results
🏛️ Current Post Office FD Interest Rates (September 2025)
| Scheme | Tenure | Interest Rate | Compounding |
|---|---|---|---|
| Post Office Time Deposit (1 Year) | 1 Year | 6.8% | Quarterly |
| Post Office Time Deposit (2 Years) | 2 Years | 6.9% | Quarterly |
| Post Office Time Deposit (3 Years) | 3 Years | 7.0% | Quarterly |
| Post Office Time Deposit (5 Years) | 5 Years | 7.2% | Quarterly |
ℹ️ About Post Office Fixed Deposit
Post Office Time Deposit Account is a fixed deposit scheme offered by India Post. It provides a safe and secure investment option with guaranteed returns.
🔑 Key Features:
• Minimum deposit: ₹200
• Maximum deposit: No limit
• Interest compounded quarterly
• Premature withdrawal allowed after 6 months with penalty
• Tax benefits under Section 80C (for 5-year deposit)
Investing your money wisely is essential for financial security and future growth. Among various investment options in India, Post Office Fixed Deposits (FDs) remain a popular choice due to safety, government backing, and attractive interest rates. But how can you figure out exactly how much money you will earn from your investment? The Post Office FD Calculator is the answer.
What is a Post Office Fixed Deposit (FD)?
A Fixed Deposit (FD) with the Post Office in India is an investment option where you deposit a lump sum amount for a fixed period (tenure) at a pre-decided interest rate. The money earns guaranteed interest till maturity, and the principal plus interest is returned at the end of the tenure.
Post Office FDs are popular because:
- They are safe and backed by the Government of India.
- They offer fixed and assured returns.
- Interest rates are competitive compared to many banks.
- Tenure ranges from 1 year to 5 years.
- Senior citizens may get additional interest benefits.
These features make Post Office FDs an ideal choice for risk-averse investors looking for steady growth in their savings.
What is a Post Office FD Calculator?
A Post Office FD Calculator is a free, online tool that helps you estimate the maturity amount and interest earned on your fixed deposit investment. Instead of manually doing complex calculations, you enter some basic details like.

- Principal amount (the amount you want to invest)
- Interest rate (post office FD interest rates applicable currently)
- Tenure (duration of your investment)
- Compounding frequency (usually quarterly for Post Office FDs)
The calculator then computes the total interest earned and the maturity value you will receive at the end of the tenure.
Why Use a Post Office FD Calculator?
Using an FD calculator offers several benefits:
- Accuracy: It gives an exact estimate of your maturity amount based on compound interest.
- Convenience: You save time and avoid errors that happen with manual calculations.
- Planning: Helps you plan your finances by comparing returns on different tenures or investment amounts.
- Decision Making: Allows you to understand the growth pattern of your investments and choose the best options.
- Free and Accessible: Available online and free to use anytime from anywhere.
How Does the Post Office FD Calculator Work?
The calculator uses the compound interest formula to calculate returns:Maturity Amount = P×(1+nr)nt

Where:
- P = Principal amount (initial deposit)
- r = Annual interest rate (in decimal)
- n = Number of times interest is compounded per year (usually 4 for Post Office FD)
- t = Number of years (tenure)
Example Calculation:
If you invest ₹2,00,000 in a Post Office FD for 5 years at 7.5% interest compounded quarterly, the maturity amount will be: M=2,00,000×(1+40.075)4×5=₹2,77,000≈
This means after 5 years, you will get around ₹2,77,000 including your principal.
Current Post Office FD Interest Rates (2025)
Below are the approximate interest rates offered by the Indian Post Office on fixed deposits as of 2025:

| Tenure (Years) | Regular Customers | Senior Citizens |
|---|---|---|
| 1 year | 6.90% | 6.90% |
| >1 year to 2 years | 7.00% | 7.00% |
| >2 years to 3 years | 7.10% | 7.00% |
| >3 years to 5 years | 7.50% | 7.50% |
Note: Rates are subject to change quarterly by the government. Always check the latest rates before investing.
How to Use the Post Office FD Calculator Step-by-Step
Follow these simple steps to calculate your Post Office FD returns:
- Open an Online Post Office FD Calculator: You can access it on websites like Groww, ClearTax, Angel One, or India Post itself.
- Enter the Principal Amount: This is the lump sum of money you plan to invest.
- Select the Interest Rate: Choose or enter the current interest rate according to your FD tenure.
- Choose the Tenure: Enter the number of years you want to keep your money invested (1 to 5 years).
- Select Compounding Frequency: Usually quarterly compounding is selected for Post Office FDs.
- Click on Calculate: The tool will instantly show the maturity amount and total interest earned.
Benefits of Post Office FD and Using the Calculator
Benefits of Post Office FD
- Safety: Government-backed and secure.
- Fixed Returns: Guaranteed interest on the principal.
- Flexible Tenure: Choose from 1 to 5 years.
- Senior Citizen Benefits: Extra interest rates.
- Easy to Open: Available at all post offices and online.
Benefits of Using Post Office FD Calculator
- Planning tool: Helps in financial planning and goal setting.
- Comparison: Compare different tenures and amounts.
- Transparency: Know your earnings upfront.
- User-Friendly: No financial expert needed.
Frequently Asked Questions (FAQs)
Can I open a Post Office FD account online?
Yes, you can open a Post Office FD account online via India Post’s online portal or through net banking facilities provided by some banks linked with India Post.
Is the interest rate fixed for the entire tenure?
Yes, once you open the FD, the interest rate is fixed for the tenure you choose. However, the rates vary for new deposits depending on government decisions.
What is the minimum amount required for opening a Post Office FD?
The minimum deposit is usually ₹1,000.
Can I withdraw the money before maturity?
Post Office FDs generally do not offer premature withdrawals except under exceptional circumstances. Premature withdrawal might attract penalties.
Summary
The Post Office FD Calculator is an essential and user-friendly tool for every Indian investor planning their fixed deposit investments in post offices. By understanding how much your money will grow over time with the effect of compound interest, you can make smarter investment decisions and secure your financial future. Post Office FDs offer the perfect blend of safety and attractive returns, and with the FD calculator, estimating your maturity amount becomes effortless and precise.
If needed, a more comprehensive, longer explanation with more examples, tables, and detailed insights can be developed. Let me know if there is a particular section to expand or any other detail required.