Post Office MIS Calculator — Monthly Income Scheme
This Post Office MIS calculator works out the monthly payout, total interest and maturity value of a Post Office Monthly Income Scheme (POMIS) deposit — a government-backed scheme that pays simple interest out every month rather than compounding it, so your original deposit is returned unchanged at the end of the fixed 5-year term. Enter your deposit amount, the current rate and your account type to see all three figures.
Minimum ₹1,000. Maximum ₹9,00,000 for a single account or ₹15,00,000 for a joint account — set the account type below to see the right limit.
Currently 7.4% for FY2025-26. The rate is fixed for the full 5-year tenure once your account is opened, even if the government revises it later for new accounts.
Determines the maximum deposit allowed — it doesn't change the interest math, which applies to whatever deposit amount you enter above.
Monthly payout
Log in to save₹5,550
Credited to your linked savings account every month for the full 5-year tenure.
The original deposit, returned at the end of 5 years — interest was already paid out monthly, not added to this amount.
How to use this post office mis calculator
- 1Deposit amount: the lump sum you invest when opening the account, minimum ₹1,000, up to ₹9,00,000 for a single account or ₹15,00,000 for a joint account.
- 2POMIS interest rate: currently 7.4% for FY2025-26 — this rate locks in for the full 5-year tenure of your account once opened, even if the government revises the rate for accounts opened later.
- 3Account type: single or joint — this only determines the maximum deposit you're allowed, it doesn't change how the interest is calculated on whatever amount you enter.
Understanding your results
Monthly payout is the simple interest credited to your linked savings account every month — POMIS doesn't reinvest or compound this, it pays it straight out. Total interest over 5 years is that monthly payout multiplied across all 60 months of the tenure. Maturity value is your original deposit, returned unchanged at the end of 5 years, since the interest was already paid out monthly rather than added to the balance.
The formula
Monthly payout = Deposit × rate / 12; Total interest (5 years) = Deposit × rate × 5; Maturity value = DepositPOMIS pays simple interest on the original deposit only, distributed monthly rather than compounded — so the monthly payout is one-twelfth of a year's simple interest, and multiplying that by 60 months gives the total interest paid over the 5-year tenure. Because none of the interest stays in the account, the maturity value at the end is exactly your original deposit.
A worked example
₹9,00,000 deposited at the default 7.4% rate: the monthly payout is ₹9,00,000 × 7.4% ÷ 12 = ₹5,550, credited every month. Over the full 5-year tenure (60 months), total interest received is ₹9,00,000 × 7.4% × 5 = ₹3,33,000. At maturity, the original ₹9,00,000 deposit is returned — the interest was already paid to you monthly, not compounded into this figure.
Things to know
POMIS is available through post offices, with the interest rate reviewed quarterly by the government for new accounts — the 7.4% used here is the FY2025-26 rate, and it stays fixed for the entire 5-year tenure of accounts opened while that rate applies, even if the government later revises the rate for newly opened accounts. Deposit limits are ₹9,00,000 for a single account and ₹15,00,000 for a joint account, with a ₹1,000 minimum. Always verify the current rate and account limits against official India Post guidance before investing.
Frequently asked questions
What's the difference between a single and joint POMIS account?+
A single account allows a maximum deposit of ₹9,00,000, while a joint account (up to 3 holders) allows up to ₹15,00,000. Interest is calculated the same way on either — the account type just changes the ceiling on how much you can deposit.
Does the interest rate change during my 5-year tenure?+
No — once you open a POMIS account, the interest rate at the time of opening is locked in for the full 5-year term, even if the government revises the rate for new accounts opened afterward. This is different from a floating-rate instrument.
Is POMIS interest taxable?+
Yes — POMIS interest is fully taxable as income at your slab rate; there's no 80C deduction on the deposit and no tax exemption on the payout, unlike PPF or SSY. TDS isn't deducted at source, but you're required to declare and pay tax on it yourself.