What the Sukanya Samriddhi Yojana Calculator does
This calculator estimates the maturity value of a Sukanya Samriddhi Yojana (SSY) account from the amount you deposit, how you deposit it, the girl's age, the year the account is opened and the interest rate. It follows the scheme's rules - deposits for 15 years from opening, maturity 21 years from opening, ₹250 to ₹1,50,000 per financial year, interest credited once a year - and shows a year-by-year table of deposits, interest and balance.
The rate is pre-filled with the current one: 8.2% a year for 1 October to 31 December 2026, unchanged from the previous quarter, as listed by the National Savings Institute and announced by the Ministry of Finance on 30 September 2026. Small savings rates are reset every quarter, so a 21-year projection at one rate is an estimate, not a guarantee; change the rate to see how much it matters. The calculation runs in your browser.
How to use it
- Choose how you deposit: once a year by 5 April (the best timing), every month by the 5th, or once a year late in the financial year.
- Enter the yearly deposit, or the monthly amount if you deposit every month. The scheme allows ₹250 to ₹1,50,000 in each financial year.
- Pick the girl's age when the account is opened (it must be opened before she turns 10) and the financial year of opening. These only label the table: maturity is always 21 years from opening, whatever her age.
- Keep the current rate or type another to test, say, 7.6% - the lowest SSY rate so far.
- Optionally open "Work backwards from a target" to find the deposit needed for a maturity amount, then copy the result or download the table.
Reading the results
The maturity value is everything paid out at the end: your deposits plus all the interest. Deposits stop after year 15, but the balance keeps earning interest for six more years, which is why the line in the chart still climbs steeply at the end.
Timing matters because interest is calculated monthly on the lowest balance between the 5th and the end of the month. A yearly deposit made by 5 April earns interest for the whole year; the same deposit made in March earns almost none until the next year. Over 21 years that difference is several lakh on the maximum deposit.
Interest is credited once, at the end of each financial year, so it compounds yearly. The monthly calculation only decides how much of each year's interest a deposit earns.
Worked example: the maximum deposit at 8.2%
Deposit ₹1,50,000 on or before 5 April every year. At the end of year 1 the balance is 1,50,000 × 1.082 = ₹1,62,300. In year 2, (1,62,300 + 1,50,000) × 1.082 = ₹3,37,908.60, and in year 3, (3,37,908.60 + 1,50,000) × 1.082 = ₹5,27,917.11.
After the 15th deposit the balance is 1,50,000 × 1.082 × (1.082^15 − 1) ÷ 0.082 = ₹44,75,989, with ₹22,50,000 paid in. Six more years at 8.2% multiply it by 1.082^6 = 1.6046, giving about ₹71,82,119 at maturity - ₹49,32,119 of it interest.
Paying ₹1,000 a month by the 5th instead (₹12,000 a year) gives about ₹5,54,612 from ₹1,80,000 of deposits. In the first year, each month's ₹1,000 earns interest only for the months it is in the account: 12,000 × 0.082 × 6.5 ÷ 12 = ₹533.
Formulas and scoring rules
- Yearly deposit by 5 April
B(n) = (B(n−1) + D) × (1 + r) for years 1-15; B(n) = B(n−1) × (1 + r) for years 16-21- Monthly deposits by the 5th
B(n) = B(n−1) × (1 + r) + D + r × D × 6.5 ÷ 12Month k earns r ÷ 12 on B(n−1) + k × D ÷ 12; the twelve months sum to 6.5 months of interest on D, credited at year end.- Late yearly deposit
B(n) = B(n−1) × (1 + r) + D- Balance after 15 yearly deposits
B15 = D × (1 + r) × ((1 + r)^15 − 1) ÷ r; maturity = B15 × (1 + r)^6- Deposit for a target
D = target ÷ maturity(D = 1)The maturity value is proportional to the deposit, so the target divides through.- Rounding
no rounding during the projection; amounts shown to the rupeeAccount statements round each year's interest, so they can differ by a few rupees.
Rules this calculator follows
From the National Savings Institute's summary of the scheme: the account can be opened for a girl until she turns 10, one account per girl, at a post office or an authorised bank; the minimum deposit is ₹250 and the maximum ₹1,50,000 in a financial year; the account matures 21 years from the date of opening. Deposits are made for 15 years from opening. Up to half the balance can be withdrawn for higher education once she turns 18, and the account can be closed early on her marriage after 18.
Deposits qualify for the Section 80C deduction (under the old income-tax regime) and the interest is exempt from income tax, per the NSI summary. Tax rules can change; check the current position for your return.
How the rate has moved
The rate has been 9.1% (December 2014 to March 2015), 9.2% in 2015-16, then gradually lower to 7.6% from April 2020 to March 2023, 8.0% for most of 2023 and 8.2% since January 2024. Every year's interest is paid at the rate in force at the time, so an account opened today will almost certainly see several different rates before it matures.
Limitations: what the result does not prove
- One rate is applied to all 21 years. The actual rate is set every quarter and will change; the result is an estimate, not a promised maturity value.
- The account is assumed to open at the start of a financial year. An account opened mid-year has a short first year and matures 21 years from its actual opening date.
- Missed years, a late-payment penalty, partial withdrawals for education and early closure are not modelled.
- It projects the scheme's arithmetic only; it does not tell you whether SSY suits your goals compared with other options.
Privacy: where your data goes
Everything you paste, type or drop is processed in this browser tab. It is not uploaded, logged, stored or sent to analytics. Session recording and tag-manager scripts are switched off on this page.
Standards and sources
- National Savings Institute (Ministry of Finance) - Sukanya Samriddhi Account - checked 19 Sep 2026
- National Savings Institute - Sukanya Samriddhi Account Scheme
- National Savings Institute - Sukanya Samriddhi interest rates since inception
- Ministry of Finance, Department of Economic Affairs
Frequently asked questions
What is the Sukanya Samriddhi interest rate now?
8.2% a year for 1 October to 31 December 2026, unchanged from the previous quarter, according to the Ministry of Finance announcement of 30 September 2026 and the National Savings Institute's rate table. It has been 8.2% since January 2024. The rate is reviewed every quarter.
How much will I get if I deposit ₹1.5 lakh a year in SSY?
At 8.2% held for the whole period, depositing ₹1,50,000 by 5 April each year for 15 years gives about ₹71.8 lakh at maturity after 21 years, from ₹22.5 lakh of deposits. Depositing later in each year, or at a lower rate, gives less.
For how many years do I have to pay into a Sukanya Samriddhi account?
Fifteen years from the date the account is opened. The account then keeps earning interest without deposits until it matures 21 years after opening. A girl whose account is opened at age 4 finishes deposits at 19 and the account matures at 25.
What happens if I deposit in March instead of April?
Interest is worked out monthly on the lowest balance between the 5th and the month end, so money deposited in March earns almost nothing that financial year. A yearly deposit made by 5 April earns a full year's interest. On the maximum deposit at 8.2%, early deposits add several lakh by maturity.
What is the minimum and maximum deposit in SSY?
At least ₹250 and at most ₹1,50,000 in each financial year, in one go or several deposits. The calculator refuses amounts outside that range, and the target mode tells you if a goal would need more than the yearly limit.
Is Sukanya Samriddhi maturity amount tax-free?
The NSI summary says interest earned is exempt from income tax under Section 10, and deposits qualify for deduction under Section 80C, which applies under the old tax regime. Confirm the current rules with the Income Tax Department or a tax adviser before filing.
Can I open an SSY account for a girl aged 10?
No. The account can be opened in the name of a girl only until she attains the age of 10, so the calculator accepts ages from under 1 to 9 completed years. Only one account can be opened per girl.
Last reviewed by the A2Z.Tools team against the sources listed above.
