Post Office Time Deposit Calculator

Calculate the maturity amount on a Post Office Time Deposit (POTD), compounded quarterly and paid out annually, across the 1, 2, 3 or 5-year tenure options.

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No registration required
Works on all devices

Data period: Post Office Time Deposit rate for July–September 2026 (6.9% (1 yr), 7.0% (2 yr), 7.1% (3 yr), 7.5% (5 yr))
Source: National Savings Institute, Ministry of Finance (DEA), Government of India
Last updated: 24-09-2026

Enter your deposit amount, tenure, and the applicable POTD interest rate to calculate the maturity amount, compounded quarterly.

Deposit amount *

₹

Interest rate (per annum) *

Current POTD rates by tenure: 1yr ~6.9%, 2yr ~7.0%, 3yr ~7.1%, 5yr ~7.5% — enter the rate for your chosen tenure.

Tenure (months) *

Your result

₹1,44,994.80

Maturity amount

Total interest earned₹44,994.80

AI explanation

Formula

Maturity amount = principal × (1 + rate/4)^(4 × years), compounded quarterly (India Post convention), even though interest is credited annually

Worked example

₹1,00,000 for 5 years at 7.5%

Worked example: ₹1,00,000 for 5 years at 7.5%
Field	Value
Deposit amount	₹1,00,000
Interest rate (per annum)	7.5
Tenure (months)	60
Maturity amount	₹1,44,994.80
Total interest earned	₹44,994.80

Assumptions and limitations

This calculator assumes

POTD interest is compounded quarterly but credited to the account annually — this calculator computes the quarterly-compounded maturity value.
Rates vary by tenure and are revised quarterly by the Ministry of Finance — enter the rate for your chosen tenure using the help text as a guide.
The 5-year POTD also qualifies for Section 80C deduction, unlike the 1/2/3-year tenures.

What it does not account for

Uses the rate notified for July–September 2026. Rates are revised every quarter; whether a revision changes the return on an existing deposit depends on the scheme's rules.

Frequently asked questions

How is POTD interest compounded?

Quarterly — though it is actually credited to your account (or paid out, if you choose the payout option) annually. This calculator reflects the quarterly-compounded effective return.

Which POTD tenure gets an 80C tax deduction?

Only the 5-year Post Office Time Deposit qualifies for deduction under Section 80C — the 1, 2, and 3-year tenures do not.

Can I withdraw a POTD before maturity?

Premature withdrawal is allowed after 6 months, but at a reduced rate — withdrawals within the first year get only the Post Office Savings Account rate, while later withdrawals get the rate for the next-lower completed tenure.

Related calculators

Sources

Official sources

Interest Rate on National Savings Schemes (Post Office Time Deposit: 6.9% (1 yr), 7.0% (2 yr), 7.1% (3 yr), 7.5% (5 yr) for July–September 2026) — National Savings Institute, Ministry of Finance (DEA), Government of India. Effective 01-07-2026, checked 24-09-2026.