Post Office FD Calculator - Calculate Your Returns

Use the Post Office FD Calculator to accurately calculate your returns and plan your investments based on current Post Office rates.

Last updated: June 2026 for FY 2025-26Formula verified against RBI / government guidelinesReviewed by Jashmin, Finance Professional
100% private: All calculations run in your browser. Your numbers never leave your device — no server, no storage, no account required.

Calculate Post Office FD

₹
₹10,000₹1,00,00,000

Amount you want to deposit in FD

%
3%10%

Annual interest rate offered by the bank

years
1years10years

Duration of your fixed deposit

Maturity Amount

₹0

Interest Earned

₹0

Effective Annual Rate

0.00%

How to Use This Post Office FD Calculator

Using our Post Office FD Calculator is simple and takes just a few seconds. Enter your values using the sliders or input fields above, and the results will update instantly — no need to click a calculate button.

All calculations are performed in your browser using standard financial formulas. Your data is never stored or transmitted to any server, ensuring complete privacy.

The results shown are estimates based on the inputs you provide. For precise figures, consult with your bank or financial advisor. Use this tool for quick comparisons, planning, and understanding how different variables affect your financial outcomes.

Formula & Explanation

A = P × (1 + r/n)^(n×t)

Where A = Maturity amount, P = Principal (deposit amount), r = Annual interest rate / 100, n = Compounding frequency (4 for quarterly), t = Tenure in years.

Calculation Examples

5-Year FD

₹5 Lakh FD at 7% for 5 years

Maturity: ₹7,10,678 | Interest: ₹2,10,678

Senior Citizen FD

₹10 Lakh FD at 7.5% for 3 years

Maturity: ₹12,50,751 | Interest: ₹2,50,751

Benefits

  • Guaranteed returns
  • Capital protection
  • Flexible tenure options
  • Loan against FD available
  • Senior citizen extra rates

Use Cases

  • Safe investment parking
  • Emergency fund
  • Retirement corpus
  • Tax saving (5-year FD)
  • Short-term goals

About Post Office FD Calculator

Our FD Calculator helps you estimate the maturity amount of your Fixed Deposit investment. Calculate interest earned with quarterly compounding and compare returns across different interest rates and tenures to make the best investment decision.

About the Post Office FD Calculator

The Post Office FD Calculator is designed to help you estimate your returns specifically using Post Office's current offerings. Our FD Calculator helps you estimate the maturity amount of your Fixed Deposit investment. Calculate interest earned with quarterly compounding and compare returns across different interest rates and tenures to make the best investment decision.

Why choose Post Office?

Post Office is one of the leading financial institutions offering competitive rates and reliable services for this product.

Frequently Asked Questions

FD interest uses compound interest: A = P × (1 + r/n)^(n×t), where P = principal, r = annual rate, n = compounding frequency (4 for quarterly), t = tenure in years. A ₹1 lakh FD at 7.5% for 3 years with quarterly compounding gives a maturity amount of approximately ₹1,25,023 — interest earned is ₹25,023. Use the free FD Calculator on AbacusHand to calculate your exact result instantly.

In a simple interest FD, interest is calculated only on the principal. A ₹1 lakh FD at 7% for 3 years = ₹21,000 interest. In compound interest FD, interest is added to the principal each period and earns further interest. The same ₹1 lakh at 7% compounded quarterly for 3 years earns ₹23,144 in interest. Most Indian bank FDs compound quarterly, making them more beneficial for longer tenures. Use the free FD Calculator on AbacusHand to calculate your exact result instantly.

As of 2025, small finance banks offer the highest FD rates at 8.5–9.5% p.a. Among major banks: SBI offers up to 7.25%, HDFC Bank up to 7.40%, ICICI Bank up to 7.35%, and Axis Bank up to 7.75% for 1–3 year tenures. Senior citizens get an additional 0.25–0.50% over the regular rate. A ₹5 lakh FD at 9% for 2 years matures to approximately ₹5,93,806. Use the free FD Calculator on AbacusHand to calculate your exact result instantly.

FD (Fixed Deposit) involves depositing a lump sum once and earning interest over the tenure. RD (Recurring Deposit) involves depositing a fixed amount every month. A ₹1 lakh FD at 7.5% for 1 year earns ₹7,763. An RD of ₹10,000/month for 12 months at the same rate earns approximately ₹4,016 — since contributions are spread over time. FD suits those with a lump sum; RD suits regular savers. Use the free FD Calculator on AbacusHand to calculate your exact result instantly.

Senior citizens (age 60+) receive a preferential FD rate, typically 0.25–0.75% higher than the regular rate. As of 2025, SBI offers 7.75% for senior citizens vs. 7.25% for general depositors on select tenures. On a ₹5 lakh FD at 7.75% for 3 years (quarterly compounding), senior citizens earn approximately ₹1,28,000 in interest vs. ₹1,16,000 at the regular rate — a ₹12,000 benefit. Use the free FD Calculator on AbacusHand to calculate your exact result instantly.

Related Calculators

SIP Calculator

Calculate SIP mutual fund returns

RD Calculator

Calculate recurring deposit returns

Gold Investment Calculator

Calculate gold investment returns

Compound Interest Calculator

Calculate compound interest growth

PPF Calculator

Calculate PPF maturity amount

CAGR Calculator

Calculate compound annual growth rate

Mutual Fund Returns Calculator

Estimate SIP and lump sum mutual fund growth

NPS Calculator

Calculate National Pension System returns

Related Articles

investments - 8 min read

FD vs RD: Which Fixed Income Option is Better?

Compare Fixed Deposit and Recurring Deposit across interest rates, flexibility, returns, and suitability. Find which option works best for your savings goals.