India Sukanya Samriddhi Yojana Calculator (SSY Maturity Value)

This calculator is built specifically for India's Sukanya Samriddhi Yojana (SSY), a government savings scheme reserved for a girl child's future, and every figure is shown in Indian Rupees (₹). It is not a generic child-savings calculator for another country. SSY offers the highest interest rate among small savings schemes tied for the top spot alongside SCSS, currently 8.2% per annum, compounded annually, and — like PPF — is a full EEE (Exempt-Exempt-Exempt) instrument: contributions qualify for a Section 80C deduction, the interest is tax-exempt, and the maturity proceeds are tax-free.

An account can be opened for a girl child at any time before she turns 10, by a parent or legal guardian. Contributions are required for the first 15 years from account opening (minimum ₹250, maximum ₹1,50,000 per financial year), after which no further deposits are needed — but the balance keeps earning interest until the account matures, which happens 21 years after opening (not 21 years from the girl's birth), unless she marries after turning 18, in which case the account can be closed early.

SSY follows the same annual compounding convention as PPF: interest is credited annually, but a deposit made early in the financial year (by the 5th of the relevant month) earns interest for that entire year, which this calculator models as a full year's interest on each year's contribution.

The projection runs in two phases. Phase one, years 1-15: each year, the balance grows by (Previous Balance + This Year's Contribution) × (1 + Annual Rate), with the contribution capped at ₹1,50,000/year. Phase two, years 16-21: no further contributions are required or modeled; the balance from year 15 simply keeps compounding at the same annual rate for the remaining years until the account reaches its 21-year maturity.

Because SSY's 15-year contribution window and 21-year maturity are fixed relative to the account's opening date — not adjustable inputs — this calculator derives the girl's age at maturity directly from her age when the account is opened (her current age, since this calculator assumes the account is opened today).

Consider an account opened for a 5-year-old girl, contributing ₹1,00,000 every year for 15 years, at the current 8.2% p.a. rate.

Phase one (years 1-15): Year 1 balance = (₹0 + ₹1,00,000) × 1.082 = ₹1,08,200. This compounds forward, and by the end of year 15, the balance reaches roughly ₹27,93,912 (from ₹15,00,000 of total contributions plus about ₹12,93,912 of interest).

Phase two (years 16-21): With no further contributions, that balance continues compounding at 8.2% for 6 more years, growing to a final maturity value of approximately ₹47,88,079 — meaning roughly ₹32,88,079 of the total came from compounded interest alone, more than double the original ₹15,00,000 in contributions, purely from letting the balance ride for the full 21-year term.

At maximum contribution (₹1,50,000/year for 15 years), the same structure grows to approximately ₹71,82,119 by maturity.

• Partial withdrawal at age 18. SSY rules allow withdrawing a portion of the balance (commonly cited as up to 50% of the immediately preceding financial year's balance) once the girl turns 18 or completes Class 10, for higher education or marriage expenses. This calculator flags an illustrative estimate for this but the exact 50% figure was not independently confirmed against a primary government source in this calculator's research pass — verify the current rule before relying on it.
• The 2-accounts-per-family limit. Generally, only one SSY account can be opened per girl child, and a family may open accounts for a maximum of two girl children (with an exception for twins/triplets). This eligibility rule is well-established but was not present on the specific primary source page checked for this calculator; confirm current details with your bank or post office.
• Marriage-triggered early closure. If the girl marries after turning 18, the account can be closed before the full 21-year maturity; this calculator only models the full-term scenario.
• Rate changes mid-projection. The entered rate is held constant across the full 21-year projection; SSY's actual rate is reviewed quarterly and can change.
• Irregular/missed contributions. This calculator assumes the same contribution amount every year for the full 15-year window; real-world irregular deposits (subject to the ₹250/year minimum to avoid the account going inactive) would produce a different, path-dependent result.

• Confusing the 15-year contribution window with the 21-year maturity. SSY does not mature when contributions stop — the account keeps compounding for a further 6 years (in the standard case of a 15-year contribution period against a 21-year maturity) with no new deposits needed.
• Assuming maturity happens at a fixed girl's age. Maturity is 21 years after the account's opening date, not a fixed age like 21; a girl whose account opened at age 3 matures at 24, while one opened at age 9 matures at 30.
• Missing the minimum ₹250/year deposit. Failing to deposit at least ₹250 in a financial year makes the account "discontinued," typically requiring a penalty payment per defaulted year to reactivate.
• Depositing late in the financial year. As with PPF, SSY's interest calculation rewards depositing early in the month/year; a deposit made late in March instead of April can meaningfully reduce that year's effective interest.
• Opening more than the permitted number of accounts. Exceeding the permitted number of SSY accounts per family (subject to the twin/triplet exception) can create compliance issues; check current rules with India Post or your bank before opening a second or third account.

• National Savings Institute, nsiindia.gov.in, Sukanya Samriddhi Account scheme page — interest rate, contribution limits, maturity rules, eligibility, tax treatment.
• Dept. of Economic Affairs, Ministry of Finance, Office Memorandum F.No.1/4/2019-NS (dated 2026-06-30) — Q2 FY 2026-27 (1 July - 30 September 2026) small savings interest rate notification, confirming 8.2% unchanged.
• Income Tax Act, 1961, Section 80C (contribution deduction) and Section 10 (interest exemption) — SSY's EEE tax treatment.