Post Office FD Calculator
Calculate your Post Office Fixed Deposit maturity amount with quarterly compounding — compare all 4 tenures side by side to find the best option for your goal.
Enter Your Details
Tenure
India Post official rate — edit to compare
Scheme Details
Compounding
Quarterly
Backed by
Govt. of India
Min. Deposit
₹1,000
Pre-closure
After 6 months
Maturity after 1 year at 6.9% p.a.
₹1.1L
₹7,081 earned · 7% gain
Principal
₹1.0L
Interest Earned
₹7,081
Total Gain
+7%
Compare all tenures
Standard India Post rates · ₹1.0L principal1 Year
baseline
2 Years
+₹7,808
3 Years
+₹16,427
5 Years ★
+₹37,914
Selected highlighted · ★ best return
What is a Post Office Fixed Deposit?
The Post Office Time Deposit (TD) — commonly called the Post Office Fixed Deposit — is a savings scheme offered by India Post and backed by the Government of India, making it one of the safest places to park your money. You can invest for four fixed tenures: 1 year, 2 years, 3 years, or 5 years, with interest compounded quarterly and credited annually to your account. Unlike most bank FDs, a Post Office TD carries a sovereign guarantee, which means your principal and interest are protected by the full faith of the Indian government — not just a deposit insurance limit. The 5-year TD also qualifies for a Section 80C tax deduction of up to ₹1.5 lakh, giving security-conscious investors a tax-efficient way to grow their savings.
How Post Office FD Interest is Calculated
Post Office FD interest follows the standard compound interest formula with quarterly compounding, applied consistently across all four tenures. Understanding the mechanics helps you make better comparisons between tenures and choose the deposit size that fits your financial plan.
Quarterly compounding grows your money faster than you think
Post Office FD uses quarterly compounding, which means interest is calculated and added to your principal every three months. For example, ₹1 lakh invested at 7.5% for 5 years grows to approximately ₹1,44,995 — a gain of ₹44,995 purely from compound interest. The difference between quarterly and annual compounding on a ₹5 lakh deposit over 5 years can easily add up to several thousand rupees in your favour.
Four tenures, each designed for a different savings goal
The 1-year tenure at 6.9% is ideal for parking short-term funds you may need within a year — such as annual expenses or insurance premiums. The 2-year and 3-year options at 7.0% and 7.1% suit medium-term goals like a home renovation or a child's school fees. The 5-year TD at 7.5% is best for long-term wealth preservation, retirement corpus building, or any goal where you want both safety and a tax deduction.
Interest is compounded quarterly but paid out annually
Under the Post Office TD scheme, interest accrues every quarter but is credited to your linked Post Office savings account once a year. This means you do not receive interest in your hand every three months — instead it accumulates and arrives as a lump sum annually. If you need regular monthly income, consider pairing this with a Post Office Monthly Income Scheme (MIS); the TD works better as a silent compounder for goals that are at least a year away.
Tax on interest and the special 80C benefit for 5 years
Interest earned on all Post Office TD tenures is fully taxable as per your income tax slab. TDS (Tax Deducted at Source) is applicable if your total interest from Post Office schemes exceeds ₹40,000 in a financial year (₹50,000 for senior citizens). However, the 5-year TD stands apart: your initial investment of up to ₹1.5 lakh is eligible for a deduction under Section 80C of the Income Tax Act, which can save a taxpayer in the 30% slab up to ₹46,800 in taxes on the deposit itself.
Current Post Office FD Interest Rates 2025
India Post interest rates are set by the Ministry of Finance and revised quarterly alongside other small savings schemes. Currently, Post Office FD rates range from 6.9% to 7.5% per annum — competitive with many public sector bank FDs and significantly more secure, since they carry a full sovereign guarantee rather than relying on DICGC insurance coverage.
| Tenure | Interest Rate | Compounding | Tax Benefit |
|---|---|---|---|
| 1 Year | 6.9% | Quarterly | No |
| 2 Years | 7.0% | Quarterly | No |
| 3 Years | 7.1% | Quarterly | No |
| 5 Years | 7.5% | Quarterly | 80C eligible |
Post Office FD vs Bank FD vs NSC
Choosing between a Post Office FD, a bank FD, and the National Savings Certificate (NSC) depends on your tenure flexibility, need for liquidity, and tax situation. The table below lays out the key differences so you can pick the right instrument for your goals.
| Feature | Post Office FD | Bank FD | NSC |
|---|---|---|---|
| Tenure Options | 1, 2, 3, 5 years | 7 days to 10 years (flexible) | 5 years only |
| Compounding | Quarterly compounded, paid annually | Quarterly or monthly (varies by bank) | Annual compounding, paid at maturity |
| Tax on Interest | Taxable as per slab; TDS if interest > ₹40,000/yr | Taxable as per slab; TDS if interest > ₹40,000/yr | Taxable, but auto-reinvested interest qualifies for 80C each year |
| 80C Benefit | Only on 5-year TD (up to ₹1.5 lakh) | Only on 5-year tax-saver FD (up to ₹1.5 lakh) | Yes, on full investment each year (up to ₹1.5 lakh) |
| Guaranteed by | Government of India (sovereign guarantee) | DICGC insurance up to ₹5 lakh per bank | Government of India (sovereign guarantee) |
How to Use the Post Office FD Calculator
Enter your investment amount in the "Principal Amount" field. For this example, type ₹1,00,000. The calculator accepts any amount from ₹1,000 upward, so you can model a small starter deposit or a large lump sum.
Select a tenure by clicking one of the four buttons — 1 Year, 2 Years, 3 Years, or 5 Years. Click "5 Years" to follow this example. The interest rate field will automatically fill in the current official rate of 7.5% per annum.
Review or adjust the interest rate if you want to compare scenarios. The pre-filled rate matches the current India Post official rate, but you can edit it to model a hypothetical future rate change or compare with a bank FD offering a slightly different rate.
Read your results instantly. For ₹1,00,000 at 7.5% for 5 years, the calculator will show a Maturity Amount of approximately ₹1,44,995, Total Interest Earned of ₹44,995, and a Total Gain of 44.99%. All figures update in real time as you change any input.
Use the 4-bar comparison chart at the bottom of the results to see how all four tenures perform with the same principal. This gives you an at-a-glance view of whether locking in for 5 years makes a meaningful difference over 3 years for your specific deposit amount.
Tips to Get the Most from Post Office FD
A Post Office FD is one of the safest investments available to Indian savers, but the right strategy maximises both your returns and your flexibility. These six practical tips help you invest smarter without taking on any additional risk.
Choose the 5-year TD for rate and tax savings
The 5-year Post Office TD offers the highest rate at 7.5% and is the only tenure that qualifies for a Section 80C deduction of up to ₹1.5 lakh. For a taxpayer in the 20% slab, this deduction alone saves ₹30,000 in tax in the year of investment, making the effective yield significantly higher than the headline rate.
Open a joint account to simplify nomination
Post Office TDs can be opened jointly by up to three adults. A joint account makes succession simpler because the surviving account holder has immediate access to the funds without waiting for legal formalities. This is particularly useful for senior citizens and retired couples who want to ensure continuity of access for their partner.
Ladder multiple FDs instead of one large deposit
Rather than placing ₹5 lakh in a single 5-year TD, consider splitting it into five deposits of ₹1 lakh each — maturing in 1, 2, 3, 4, and 5 years. This FD laddering strategy ensures you always have a deposit maturing soon, keeping liquidity available without breaking long-term investments and while still benefiting from compounding on the longer-dated deposits.
Know the premature withdrawal penalty before you lock in
Post Office TDs cannot be withdrawn within 6 months of opening. After 6 months but before 1 year, you earn only Post Office Savings Account interest (currently 4%). After 1 year, withdrawal is allowed with a 1% penalty deducted from the applicable rate. Plan your cash flow needs carefully before committing, as breaking the TD early substantially reduces your effective return.
Post Office FD is safer than most bank deposits
Bank FDs are insured by DICGC up to ₹5 lakh per depositor per bank. A Post Office TD, by contrast, carries a full sovereign guarantee from the Government of India with no upper cap on the insured amount. If safety of principal is your primary concern — especially for amounts above ₹5 lakh — the Post Office TD is the gold standard for risk-averse savers.
Enable auto-renewal to avoid reinvestment gaps
When your Post Office TD matures, idle funds sitting in a savings account earn only 4% instead of the TD rate. At the time of opening, request auto-renewal at your Post Office branch so the deposit automatically rolls over at the prevailing rate on the maturity date. This one-time instruction ensures your money is always working at the highest available rate without you having to visit the branch again.
Post Office FD Calculator — Frequently Asked Questions
The Post Office Time Deposit (TD) is a fixed-return savings scheme operated by India Post under the National Small Savings Fund and backed by the Government of India. It allows you to invest a lump sum for a fixed tenure of 1, 2, 3, or 5 years at a pre-announced interest rate, with interest compounded quarterly and credited to your account annually. Because it is a government-backed instrument, there is no credit risk — your principal and interest are guaranteed regardless of market conditions. The scheme is available at any Post Office branch across India and can be opened with a minimum deposit of just ₹1,000.
Disclaimer: These tools provide estimates based on the inputs provided. Results are for educational purposes only and should not be considered financial advice. Please consult a qualified financial advisor for personalized guidance.