Instant Calculation
View your estimated maturity amount, total interest and overall return immediately after entering the details.
National Savings Time Deposit
Post Office FD Calculator
Estimate the maturity amount and interest earned on your Post Office Time Deposit using the deposit amount, tenure and applicable annual interest rate.
Calculate Your FD Returns
Enter the investment details below.
Please enter valid investment details.
Estimated Returns
Your projected deposit summary.
Estimated Maturity Amount
₹1,07,082
Principal Amount
₹1,00,000
Total Interest
₹7,082
Interest Rate
6.90% p.a.
Deposit Period
1 Year
Calculation Breakdown
Investment date
—
Estimated maturity date
—
Average interest per year
₹7,082
Effective total return
7.08%
Principal
Interest earned
Key Features
Plan Your Post Office Fixed Deposit
Understand how the deposit amount, interest rate and tenure can affect your estimated maturity value.
Flexible Interest Rate
Update the default rate to calculate returns using the exact rate available when opening the account.
Clear Return Breakdown
Compare the deposited principal with the projected interest earned over the selected investment period.
Simple Process
How to Use the Post Office FD Calculator
Calculate your projected Post Office Time Deposit return in three straightforward steps.
1
Enter Deposit Amount
Add the lump-sum amount that you are planning to deposit in the Post Office Time Deposit account.
2
Select the Tenure
Choose a deposit term of 1, 2, 3 or 5 years. The corresponding default interest rate will be added.
3
Review Estimated Returns
Check the projected maturity amount, total interest, maturity date and effective return percentage.
What Is a Post Office Fixed Deposit?
A Post Office Fixed Deposit is officially known as a Post Office Time Deposit Account. It is a government-backed small savings product available through eligible post offices in India. Depositors invest a lump-sum amount for a fixed tenure and earn interest at the rate applicable when the account is opened.
Post Office Time Deposit accounts are generally available for terms of 1 year, 2 years, 3 years and 5 years. The interest rate may differ according to the selected term. This calculator estimates the compounded value of the deposit using the amount, annual rate, tenure and compounding frequency entered by the visitor.
Post Office Time Deposit Interest Rates
The calculator includes tenure-based default rates. Since small savings rates can be revised, visitors should verify the current rate before making a financial decision.
| Deposit Tenure | Default Calculator Rate | Compounding Used | Rate Editable |
|---|---|---|---|
| 1 Year | 6.90% p.a. | Quarterly | Yes |
| 2 Years | 7.00% p.a. | Quarterly | Yes |
| 3 Years | 7.10% p.a. | Quarterly | Yes |
| 5 Years | 7.50% p.a. | Quarterly | Yes |
How Is Post Office FD Maturity Calculated?
The calculator uses the compound interest formula:
Maturity Amount = P × (1 + r ÷ n)n × t
- P is the original deposit amount.
- r is the annual interest rate in decimal form.
- n is the number of compounding periods per year.
- t is the deposit tenure in years.
For example, when ₹1,00,000 is invested for one year at 6.90% per annum with quarterly compounding, the estimated maturity amount is calculated by applying interest four times during the year.
Benefits of Using This Calculator
- Estimate the maturity value before investing.
- Compare returns across available deposit tenures.
- Understand the difference between principal and interest.
- Test different deposit amounts and interest rates.
- Estimate the maturity date for financial planning.
Important Points to Consider
Calculator results are estimates and may not exactly match the final amount credited by the Post Office. Actual returns can be affected by official calculation rules, rounding, account-opening dates, premature closure, tax treatment and future regulatory changes.
A five-year Post Office Time Deposit may qualify for tax benefits subject to applicable income-tax provisions. However, interest income and tax eligibility depend on the depositor’s circumstances and current law. Consider obtaining qualified tax advice where necessary.
Common Questions
Post Office FD Calculator FAQs
Answers to common questions about Post Office Time Deposit calculations and estimated returns.
It is an online calculation tool that estimates the maturity amount and interest earned on a Post Office Time Deposit based on the deposit, tenure, interest rate and compounding frequency.
Post Office Time Deposit accounts are commonly available for terms of 1 year, 2 years, 3 years and 5 years. The applicable interest rate can vary by tenure.
No. The calculator provides default tenure-based rates, but the interest field is editable because the Government can revise small savings scheme rates.
This tool uses quarterly compounding as its default calculation method. Visitors can also select another frequency for comparison, although official account calculations will follow the applicable scheme rules.
No. The displayed result is an estimate for planning purposes. Confirm the official rate, maturity value and account conditions with India Post before investing.
Yes. Enter any valid annual rate in the interest-rate field and the calculator will recalculate the maturity value using that rate.
Disclaimer: This calculator provides
approximate results for general information only. It is not
financial, investment or tax advice. Official interest rates,
eligibility rules, tax benefits and maturity calculations
should be confirmed through India Post or another authorised
government source.