Her 21st birthday is not the account's normal maturity date
The Sukanya Samriddhi Account Scheme links normal maturity to 21 years from opening. Opening at age 3 means a normal maturity age of about 24. Starting earlier makes funds available at a younger age; it does not change the account term.
Contributions run for up to 15 years from opening. This model then leaves the balance to grow for six more years with no new deposits. The timeline distinguishes the contribution deadline from the maturity date, so you can align it with education or other future needs.
A monthly ledger, not a simple 21-year annuity
Select the opening month, the girl's age then, an equal monthly or annual contribution and an assumed annual rate. The model schedules 180 monthly payments or 15 annual payments. Annual deposits repeat in the opening month; they are not silently moved to April.
Monthly interest accrual = Eligible monthly balance × Assumed annual rate ÷ 12FY closing balance = Previous balance + Deposits + Rounded FY interestProjected maturity amount = Total contributions + Estimated interestThe eligible balance follows the fifth-day cutoff. A day-6 payment does not earn interest for that month, whereas a day-1 payment does. Accrued interest is added at March financial-year end, rounded to the nearest rupee, and then earns interest in later periods.
Opening and ending financial years can be partial. The final complete calendar month before maturity is included; the closure month and daily pro-rata adjustments are excluded. The selected day is also the assumed opening day. This is a transparent planning convention, not a promise of the bank's exact closure quote.
The reviewed July–September 2026 rate is 8.2% per year. You can change the projection rate. Future government rate revisions are unknown; using 8.2% throughout 21 years is an assumption, including for an opening month outside that quarter.
A starting-age savings example
The loaded scenario opens at age 3 years 0 months in 2026-10, with ₹5,000 contributed monthly. It deposits a total of ₹9,00,000 over the contribution window.
At an assumed 8.2% annual rate, projected interest is ₹18,75,224 and the estimated maturity lump sum is ₹27,75,224. The modeled maturity date is 1 Oct 2047, when the girl is approximately 24 years 0 months old.
These figures illustrate the page-load scenario. Use Calculate maturity to update the result, and try a lower rate or a different deposit day to understand sensitivity.
Work backward from a desired maturity amount
Open Timing & maturity target and enter a desired lump sum. The tool searches equal contributions in increments of 50 under the same rate and schedule. It respects the supported annual contribution cap instead of suggesting a deposit the scheme does not permit.
If the target is larger than the capped plan can produce, the result shows the shortfall. That is a signal to revisit the assumed target, savings mix or time horizon-not a recommendation to exceed the SSY limit. The target calculation is nominal; inflation and the future cost of education are not estimated.
Eligibility and what this planner leaves out
A new account requires a girl below age 10, with account/family rules and documentation confirmed by the provider. Exact birthday eligibility is not determined from an approximate starting-age entry.
The scheme's financial-year contribution bounds are 250 to 150000, with subsequent deposits in multiples of 50. This planner's equal monthly schedule starts at 250 per month, so the opening deposit satisfies the minimum; that supported monthly minimum should not be confused with the legal annual minimum.
No education withdrawal, intended-marriage closure, death or compassionate closure, default penalty, existing balance, changing-rate history or tax saving is built into this full-term model. Education withdrawals and marriage closure have conditions and are not unrestricted age-18 maturity options.
Read the official NSI scheme, Central Bank of India's scheme details and the dated interest-rate table. This website is not an account-opening service or a government endorsement.
Frequently asked questions
Does Sukanya Samriddhi mature when my daughter turns 21?
No. Normal maturity is 21 years from account opening. If she is 3 years old at opening, she will be about 24 at normal maturity. Her starting age determines eligibility and the displayed milestone ages, not the scheme's term.
Who can open a Sukanya Samriddhi account?
A guardian can open an account for a girl who has not attained age 10 on the opening date, subject to the scheme's account and family rules. This planner uses starting age in years and months; confirm the exact date-of-birth eligibility and required documents with the bank or post office.
How long do I deposit, and how long does the account grow?
Deposits are allowed for 15 years from account opening. Normal maturity is after 21 years. This planner schedules 180 monthly contributions or 15 annual contributions, then no new deposits for the remaining six years, assuming no withdrawals or premature closure.
What contribution limits does the planner use?
The scheme requires at least 250 per financial year and permits up to 150000, with subsequent deposits in multiples of 50. This simple equal-contribution planner accepts monthly amounts from 250 to 12500, or annual amounts from 250 to 150000, in multiples of 50. Its monthly minimum is a supported schedule choice, not the legal annual minimum.
Is the 8.2% interest rate guaranteed until maturity?
No. 8.2% is the reviewed July–September 2026 annual rate. The government can change rates for later quarters. The planner applies your editable assumed rate throughout the projection; the result is an estimate, not a bank quote or a guaranteed future return.
How do deposit timing and financial years affect the estimate?
Interest uses the monthly eligible balance after the fifth-day cutoff, with annual crediting and rupee rounding at financial-year end. This model schedules deposits on day 1 or day 6 of the opening month and subsequent months or anniversaries. It models complete calendar months before maturity and excludes the closure month; exact daily closure adjustments and bank posting differences are not modeled.
Can I plan for a specific maturity lump sum?
Yes. Enter an optional target to see the smallest equal contribution, in 50 increments, that meets it under the same schedule and rate assumption. If the target exceeds the contribution-cap scenario, the planner shows that limit and a shortfall instead of recommending an invalid deposit amount.
Can I withdraw the whole balance at age 18?
Not as an unrestricted normal maturity option. Education withdrawals and closure for intended marriage have specific eligibility, documentation and timing conditions. This projection assumes no withdrawals or early closure. Read the official scheme and confirm your circumstances with the account provider.
Does this calculator require my child's name or date of birth?
No. It uses starting age and an opening month; it does not request a child name or exact date of birth. Shared scenario links contain the age, opening month and financial assumptions, which recipients, browser history and server logs may see. There is no account or calculator database.