Free Online Tool

SCSS Calculator: Quarterly Income From the Senior Citizen Savings Scheme

See exactly what your Senior Citizen Savings Scheme deposit pays every quarter at 8.2 percent, the post-tax income you keep after 80TTB, and the cost of closing early, with the principal returned intact at maturity.

8.2% Rate Locked 5 Years Quarterly Payout Post-Tax Income 30 Lakh Cap Premature Penalty PDF and WhatsApp

Quarterly Payout Model: Income From a Locked-Rate Deposit

Interest pays out every quarter and does not compound; principal returns at maturity.
Rs
Minimum 1,000, maximum 30 lakh per individual. Excess is returned without interest.
% p.a.
8.2 percent for Q1 FY 2026-27, locked for your full 5 year tenure.
Interest is taxable; the 80TTB deduction of up to 50,000 is applied automatically.

Remember: SCSS pays interest out to you each quarter and does not compound. Your principal is returned in full at the end of the 5 year tenure.

💰 Enter your deposit and click Calculate to see your quarterly and annual SCSS income.
Principal vs 5-Year Interest

The Retiree’s Income Scheme, Not a Wealth Builder

SCSS does not grow your money into a bigger corpus. It takes a lump sum you already have and turns it into safe, predictable quarterly income, returning your principal untouched after five years. Understanding that distinction is the key to using it well.

The Senior Citizen Savings Scheme is the single most generous guaranteed income option the Government of India offers to retirees. At 8.2 percent for the April to June 2026 quarter, it sits right at the very top of the entire post office rate table, comfortably above even senior citizen fixed deposits, and it carries a full sovereign guarantee.

That combination of a high rate and a sovereign guarantee is rare and worth pausing on. In most markets, higher returns come with higher risk, but SCSS offers a rate that beats bank deposits while carrying the backing of the Government of India itself, the safest credit in the country. There is no equity volatility, no credit risk, no chance of default. For money a retiree simply cannot afford to lose, this pairing of generosity and safety is close to unique among Indian savings products, and it explains why demand for SCSS is strong whenever rates are held high.

For anyone over 60 with a lump sum, a retirement corpus, a gratuity payout, the proceeds of a property sale, who wants that money to be both safe and productive, SCSS is usually the first place financial advisers point them.

The scale of the income it can produce is what makes it so valuable. A full 30 lakh deposit throws off about 2,46,000 a year, roughly 20,500 a month averaged out, from a completely safe, government-guaranteed source. For many middle-class retirees that single scheme covers a large share of their monthly needs on its own, before any pension, rental income or other savings are even counted into the picture. Few other instruments in India combine that level of income with that level of safety, which is precisely why the scheme is so heavily used despite its limits and its taxable interest.

But it works in a way that surprises people expecting a scheme like PPF or a cumulative fixed deposit. SCSS does not compound. The interest it earns is not reinvested to build a larger maturity value; instead it is paid straight out to your bank account every quarter as income.

At the end of the five year tenure you simply receive your original principal back, exactly as you deposited it, having drawn the quarterly interest throughout. There is no growing corpus and no lump sum bonus at the end.

That design is not a limitation; it is the entire point. A retiree does not usually need their capital to grow, they need it to generate reliable spending money without being eroded or put at risk. SCSS does precisely that: the principal stays safe and intact, and it throws off a dependable stream four times a year.

Framing SCSS as an income scheme rather than a growth scheme is the mental shift that makes it click, and it is why this calculator leads with the quarterly payout rather than a maturity figure. Once you stop looking for a big number at the end and start looking at the steady number every quarter, the scheme makes complete sense and its role in a retirement plan becomes obvious.

It complements the accumulation tools in our retirement suite. Where the EPF calculator and PPF calculator build a corpus during your working years, SCSS is what you do with a corpus once you have it and need income. Read on to understand the quarterly mechanics, the tax treatment that trips people up, and the rules on limits, penalties and extensions.

One clarification is worth making at the outset, because it shapes everything else. The 8.2 percent headline rate is attractive, but it is a pre-tax, non-compounding, simple-interest rate, not an equivalent to a compounding return of 8.2 percent. A cumulative fixed deposit compounding at 8.2 percent would produce a larger effective yield over five years than SCSS, because SCSS pays the interest out rather than letting it grow on itself. That is not a flaw, since the whole purpose is income rather than growth, but it means SCSS should be compared with other income options, not with compounding growth instruments, when you weigh it up.

How SCSS Income and the Rate-Lock Work

The mechanics are simple once the income-not-growth framing is clear. Four features define how SCSS pays you.

Interest is simple, not compound

Your deposit earns interest at the annual rate, and that interest is divided into four and paid out each quarter. Because it is paid out rather than reinvested, it never earns interest on itself, so there is no compounding.

A 30 lakh deposit at 8.2 percent earns 2,46,000 a year, paid as 61,500 every quarter, and that figure stays the same for all five years.

Because the quarterly figure never changes, budgeting around SCSS is unusually easy. Unlike a market-linked income that fluctuates or a dividend that may be cut, you know with certainty what will land in your account on each of the four dates for the full five years. For a retiree who values predictability above all, this fixed, guaranteed, unchanging payment is a large part of the appeal, and it stands in deliberate contrast to the variable income from equity or the deferred payoff of a growth scheme.

The rate is locked at opening

Although the government revises the SCSS rate every quarter, the rate you get is fixed at whatever it was when you opened the account, and it stays locked for the full five year tenure. If you open at 8.2 percent, you keep 8.2 percent even if the rate is later cut.

This rate-lock is a real advantage over a fresh fixed deposit and a strong reason to open when rates are high, as they are now.

To appreciate the rate-lock, consider the alternative. If rates fall over the next few years, a retiree who kept rolling short bank deposits would see their income shrink at each renewal, whereas the SCSS holder who locked 8.2 percent keeps that income untouched for the full five years. In a falling-rate environment this protection is genuinely valuable and can be worth more than a small difference in the headline rate. It is one reason advisers often suggest deploying into SCSS decisively when rates sit at the top of their range, rather than waiting for a marginally better rate that may never come.

Payouts land on fixed dates

Interest is credited on the first day of April, July, October and January, straight to your linked bank account. This predictable quarterly rhythm is what makes SCSS function as a kind of retirement salary, four dependable payments a year that you can budget your household around with confidence, rather than money locked away out of reach until a single distant maturity date.

Principal returns intact at maturity

At the end of five years you receive your original deposit back in full, unchanged. There is no maturity corpus larger than what you originally put in, for the simple reason that the growth was handed to you as income along the way rather than left to accumulate. You then choose whether to withdraw the principal, extend the account for a further three years, or redeploy the money into another instrument entirely.

This return-of-principal feature is a double-edged sword worth understanding. On the one hand, your capital is never consumed or at risk, which is deeply reassuring for a retiree. On the other, that same capital does not grow, so over a long retirement inflation quietly erodes its purchasing power: 30 lakh returned after five years buys noticeably less than 30 lakh did at the start. This is the central trade-off of any fixed-income scheme, and it is why SCSS is best used as the safe, income-generating core of a retirement portfolio rather than its entirety, with some growth assets alongside to counter inflation over the years.

The Tax Treatment That Trips People Up

SCSS tax catches retirees out constantly, because the deposit and the interest are treated very differently. Getting it right protects your income.

ItemTax treatment
Deposit (up to 1.5 lakh)80C deduction, old regime only
Quarterly interestFully taxable at your slab
Interest relief80TTB deduction up to 50,000
TDS thresholdInterest above 1 lakh a year

The deposit earns an 80C deduction

Your SCSS deposit qualifies for a Section 80C deduction of up to 1.5 lakh in the year you invest, the same limit shared with EPF, PPF and life insurance. But this benefit is available only under the old tax regime; if you have opted for the new regime, you get no deduction on the deposit.

Under the New Income Tax Act 2025 this provision is now referenced as Section 123, though the effect is the same.

The interest is fully taxable

Every rupee of SCSS interest is added to your income and taxed at your slab rate as income from other sources. This is the part people forget: the headline 8.2 percent is a pre-tax figure, and a retiree in the 20 or 30 percent slab keeps meaningfully less.

This calculator applies your slab so you see the real, after-tax income rather than the gross.

Section 80TTB softens the blow

Senior citizens can deduct up to 50,000 a year of interest income under Section 80TTB, covering SCSS, fixed deposits and savings interest together. This meaningfully reduces the tax on modest SCSS income and can eliminate it entirely for smaller deposits. This calculator applies the 80TTB deduction before computing the tax on your interest.

It is worth knowing that 80TTB is a combined limit across all interest income, not specific to SCSS. If you also earn interest from bank fixed deposits or savings accounts, those count toward the same 50,000 deduction, so a retiree with several interest-bearing accounts may find the 80TTB relief fully used up before all their SCSS interest is covered. When planning, look at your total interest income across every source, not SCSS in isolation, to judge how much of the deduction remains available.

TDS applies above 1 lakh

If your annual SCSS interest exceeds 1 lakh, a threshold raised from 50,000 in Budget 2025, the bank or post office deducts TDS. A full 30 lakh deposit generates 2,46,000 and so attracts TDS.

If your total income is below the taxable limit you can file Form 15H to prevent the deduction, and any excess TDS is refundable when you file your return.

A practical point on Form 15H: it is a self-declaration that your total income for the year is below the taxable threshold, and submitting it to your bank or post office at the start of the financial year prevents TDS from being deducted in the first place, saving you from having to claim a refund later. Many eligible retirees forget to file it and needlessly have TDS withheld on income that was never going to be taxable, then wait months for the refund. If your income genuinely falls below the limit, filing 15H promptly each year is a simple, worthwhile habit.

Where SCSS Fits in a Retirement Income Plan

SCSS is powerful but partial. Seeing how it sits alongside the other pillars of retirement income helps you use it for what it does best rather than expecting it to do everything.

The guaranteed-income core

Most sound retirement plans have a base layer of guaranteed income that covers essential expenses, so that food, utilities, medicine and housing are never at the mercy of markets. SCSS is close to ideal for this layer: government-guaranteed, high-yielding by safe-instrument standards, and paying out on a predictable quarterly rhythm. Filling this essential-expenses floor with SCSS, up to the 30 lakh limit, is often the first move a retiree makes. The logic is that once your essentials are covered by income that cannot fall or fail, everything else in your portfolio can be invested for growth with far less anxiety, because a market downturn no longer threatens your ability to pay the basic bills.

Alongside a pension or annuity

SCSS pairs naturally with a pension or an NPS annuity. Where an annuity pays monthly and is locked for life, SCSS pays quarterly and returns the principal after five years, giving more flexibility. A retiree might use an annuity for one slice of guaranteed income and SCSS for another, keeping some capital accessible rather than annuitising everything. This diversification also spreads provider and product risk, and gives the retiree the option to redeploy the SCSS principal in five years if a better instrument or a changed circumstance calls for it, flexibility a lifelong annuity can never offer. The two together can build a robust, diversified base of safe income from different sources.

Above it, some growth

Because SCSS does not grow and its real value erodes with inflation, a complete plan keeps a portion of the corpus in growth assets, typically equity through mutual funds, to counter that erosion over a retirement that may last decades. The usual structure is SCSS and other fixed income for the near-term, dependable spending, and a growth sleeve for the later years, drawn down gradually. SCSS anchors the safe end of that spectrum.

The right balance between the safe SCSS layer and the growth sleeve depends on your age, other income and risk tolerance, but the principle is constant: never rely on fixed income alone for a retirement that could span thirty years, and never expose money you need next quarter to the market. SCSS handles the second half of that rule beautifully, providing rock-solid near-term income, while leaving the growth job to assets better suited to it. Used that way, in concert rather than in isolation, it plays its part in a plan that is both safe today and resilient against inflation tomorrow.

Liquidity on the side

Finally, because SCSS carries a penalty for early exit, it should not hold money you might need at short notice. A separate liquid buffer, in a savings account or short fixed deposit, handles emergencies, leaving the SCSS deposit undisturbed to run its full term. A common guideline is to keep six months to two years of expenses in that liquid buffer depending on your comfort, sized so that ordinary surprises never force a penalised early exit from SCSS. Layering SCSS with a liquidity reserve in this way captures its high rate without sacrificing access to emergency funds, the best of both.

Three Retirees and Their SCSS Income

The scheme suits different situations differently, and the three retirees below show the range. All figures are reproducible in the tool above.

RN
Ramesh Nair, ChennaiMaxed out for full income
30 lakh
Rs 30 L
Deposit
Rs 61,500
Quarterly
Rs 2.46 L
Annual
Intact
Principal

Ramesh retired with a gratuity and provident fund payout and deposited the full 30 lakh in SCSS. He receives 61,500 every quarter, about 2,46,000 a year, credited to his bank account, which comfortably covers his household expenses. His principal stays completely intact and returns to him after five years.

Because his interest exceeds 1 lakh, TDS is deducted, but as it sits within his overall income he adjusts it when filing rather than submitting Form 15H.

A full 30 lakh deposit is the SCSS sweet spot for a retiree needing income: 61,500 a quarter, principal safe, government-guaranteed, and the rate locked for the full five years regardless of what happens to rates.
SB
Sushila Bose, KolkataModest deposit, tax-free income
80TTB
Rs 6 L
Deposit
Rs 12,300
Quarterly
Rs 49,200
Annual
Rs 0 tax
After 80TTB

Sushila deposited a more modest 6 lakh, part of her savings, keeping the rest liquid. Her SCSS pays 12,300 a quarter, about 49,200 a year. Because that annual interest is just under the 50,000 Section 80TTB deduction for seniors, effectively none of it is taxable, and no TDS applies since it is below the 1 lakh threshold.

Her SCSS income is, in practice, entirely tax-free, an ideal outcome for a smaller, income-focused deposit.

A deposit generating under 50,000 of interest a year is effectively tax-free for seniors thanks to 80TTB, with no TDS either, which makes a smaller SCSS deposit one of the most efficient safe-income options a modest retiree can hold.
JM
Joseph Mathew, PuneNeeded to exit early
Penalty
Rs 20 L
Deposit
Year 3
Closed
Rs 20,000
Penalty 1%
Rs 19.8 L
Returned

Joseph deposited 20 lakh but a family medical need forced an early exit in the third year. Because he closed after two years but before maturity, a 1 percent penalty of 20,000 applied, and he received 19,80,000 of principal back plus the quarterly interest already paid to that point.

While a penalty is never welcome, SCSS at least permits the exit, and the 1 percent cost was a small price for accessing the capital when he genuinely needed it.

SCSS allows premature closure with a modest penalty, 1 percent after two years, so the money is not entirely locked if an emergency strikes, though a separate liquid buffer would have been the better first line of defence.

Six Points to Get Right With SCSS

A few informed choices help a retiree extract the most from the scheme while avoiding its pitfalls. These six matter most.

None is complicated, but each addresses a way retirees either leave money on the table or get caught out by a rule they did not know.

01

Open when rates are high

The rate locks at opening for five years, so opening at the current 8.2 percent secures that rate even if it is later cut. With rates at the top of the range now, there is a real advantage to acting rather than waiting.

02

Use a couple’s double limit

If both spouses are 60 or above, each can deposit 30 lakh in separate accounts, taking household SCSS income to the equivalent of 60 lakh. Do not leave this capacity unused if you have the corpus.

03

Remember it is income, not growth

Do not expect a larger sum at maturity. The interest is paid out quarterly and the principal returns unchanged. Plan to use or reinvest the quarterly payouts yourself if you want them to grow.

04

Plan for the tax

The 8.2 percent is pre-tax. Apply the 80TTB deduction and your slab to know your real income, and file Form 15H if your total income is below the taxable limit to avoid unnecessary TDS.

05

Keep the maturity date in view

Apply to extend within one year of maturity if you want to continue, in 3-year blocks now allowed multiple times. Miss the window and the account closes, so diarise the date well ahead.

06

Layer with fixed deposits

Max SCSS first for the higher guaranteed rate, then use bank fixed deposits for any surplus and for liquidity. SCSS is the core of safe retirement income; deposits complement it for flexibility.

SCSS Numbers Worth Remembering

These reference points let you sanity-check any SCSS quote or calculation at a glance, and spot immediately when a tool has ignored the tax, the cap, or the non-compounding nature of the scheme.

ItemValue 2026Note
Interest rate8.2% p.a.Q1 FY 2026-27, locked at opening
Payout frequencyQuarterly1 Apr, 1 Jul, 1 Oct, 1 Jan
Full 30 lakh incomeRs 61,500 / quarterRs 2,46,000 a year
Maximum depositRs 30 lakhPer individual, all accounts
Minimum depositRs 1,000In multiples of 1,000
Tenure5 yearsExtendable in 3-year blocks
CompoundingNoneInterest paid out, not reinvested
Deposit tax benefit80C up to 1.5 lakhOld regime only
Interest taxTaxable at slab80TTB deducts up to 50,000
TDS thresholdInterest above 1 lakhRaised in Budget 2025
EligibilityAge 60+ (55+ VRS, 50+ defence)Resident individuals only
Premature penalty1% to 1.5%By year of closure

Premature Closure Penalties, Priced in Rupees

SCSS allows an early exit if you genuinely need the money, but with a penalty that depends on how long the account has run. After you calculate, the penalties below show in rupees for your specific deposit, so you can see the real cost of closing at each stage before committing.

When you closePenalty on your deposit
Within 1 yearRun the calculator to see
Between 1 and 2 yearsRun the calculator to see
After 2 years, before maturityRun the calculator to see

Closing within the first year is the most costly in relative terms, since no interest is paid at all and only your principal comes back. From the second year onward the penalty is a modest percentage of the deposit, 1.5 percent in the first-to-second year and 1 percent thereafter, which is small enough that SCSS should not be dismissed for fear of being locked in. In the event of the account holder passing away, the nominee receives the full amount with no penalty whatsoever, and the account can in some cases be continued by an eligible surviving spouse.

Frequently Asked Questions on SCSS

What is the SCSS interest rate in 2026?
The Senior Citizen Savings Scheme pays 8.2 percent per annum for the April to June 2026 quarter, among the highest of all post office small-savings rates. The government reviews the rate every quarter, but crucially the rate at which you open your account is locked for the entire 5 year tenure, so future revisions do not affect an existing account. A retiree who opens at 8.2 percent keeps 8.2 percent for five years even if the rate is later cut. This calculator uses 8.2 percent by default, which you can change if the rate has since been revised.
How much does 30 lakh in SCSS pay per quarter?
A full deposit of 30 lakh, the maximum allowed per individual, pays about 61,500 every quarter at the 8.2 percent rate, which is 2,46,000 a year. The interest is credited directly to your linked bank account on the first day of April, July, October and January. This quarterly income is the whole point of SCSS for most retirees: a large, safe lump sum converted into a predictable stream of money to live on. This calculator shows your exact quarterly and annual income for any deposit up to the 30 lakh limit.
Does SCSS interest compound?
No, and this is the most important thing to understand about SCSS. Unlike PPF or a cumulative fixed deposit, SCSS does not compound; the interest is paid out to you every quarter as income rather than being reinvested. So there is no growing maturity corpus. At the end of the 5 year tenure you simply get your original principal back, intact, having received the quarterly interest along the way. SCSS is an income scheme, not a wealth-building scheme, which is exactly why it suits retirees who need regular cash flow rather than long-term growth.
What is the maximum I can invest in SCSS?
The maximum deposit is 30 lakh per individual across all your SCSS accounts combined, raised from 15 lakh in 2023. A retired couple who are both 60 or above can open separate accounts and invest 30 lakh each, taking the household total to 60 lakh. Joint accounts count entirely toward the primary holder’s 30 lakh limit. If you inadvertently deposit more than 30 lakh, the excess is returned to you without earning any interest. This calculator caps the deposit at 30 lakh and flags any excess so you do not overestimate your income.
Is SCSS interest taxable?
Yes. The interest is fully taxable as income from other sources at your slab rate, and must be declared each year. However, senior citizens can claim a deduction of up to 50,000 a year on interest income under Section 80TTB, which covers SCSS, fixed deposits and savings interest combined. The deposit itself qualifies for a Section 80C deduction up to 1.5 lakh, but only under the old tax regime. This calculator applies the 80TTB deduction and your slab to show the net income you actually keep after tax.
Is TDS deducted on SCSS interest?
Yes, if your total SCSS interest in a year exceeds 1 lakh, the bank or post office deducts TDS, a threshold raised from 50,000 under Budget 2025. A full 30 lakh deposit generates 2,46,000 of interest, well above the threshold, so TDS applies. If your total income is below the taxable limit, you can submit Form 15H to avoid TDS being deducted. Any TDS deducted can be claimed back as a refund when you file your return if your actual tax liability is lower. This calculator flags when your interest crosses the 1 lakh TDS threshold.
Who is eligible for SCSS?
SCSS is open to resident Indians aged 60 and above. It is also available to those aged 55 to 60 who have retired under a voluntary retirement scheme or superannuation, provided they invest within one month of receiving their retirement benefits, and to defence personnel aged 50 and above. Non-resident Indians and Hindu Undivided Families are not eligible. The scheme is designed specifically as a safe, income-generating home for retirement money, which is why it carries these age-based eligibility rules. This calculator applies to any eligible senior planning to deposit a lump sum for quarterly income.
What is the SCSS tenure and can it be extended?
The standard SCSS tenure is 5 years. After maturity you can extend the account in blocks of 3 years, and since the November 2023 amendment this can be done multiple times rather than just once. You must apply for extension within one year of maturity. An extended account earns the interest rate prevailing at the time of extension, not your original locked rate, so the income may change on extension. This flexibility lets a retiree keep the money in a safe, high-rate scheme well beyond the initial five years if they do not need the principal back.
Can I withdraw from SCSS before maturity?
Yes, premature closure is allowed but with penalties. If you close within the first year, no interest is paid and only your principal is returned. Closing between one and two years incurs a penalty of 1.5 percent of the deposit. Closing after two years but before the five year maturity incurs a 1 percent penalty. In the event of the account holder’s death, the nominee receives the full amount without any penalty. This calculator shows the rupee penalty at each stage so you can see the cost of early exit before committing your money.
How is SCSS different from a bank fixed deposit?
SCSS typically pays a higher rate, 8.2 percent versus about 7 to 7.5 percent on senior citizen fixed deposits, carries a sovereign government guarantee, and offers the Section 80C deduction. Bank fixed deposits are more flexible: any tenure, any amount, and easy online access. Most retirees max out SCSS first at 30 lakh for the higher guaranteed rate, then use bank fixed deposits for any additional money or for liquidity. SCSS is the more generous choice for the core of a retiree’s safe income, while fixed deposits complement it for flexibility.
How is SCSS different from PPF?
They serve opposite purposes. PPF is a long-term wealth-building scheme with a 15 year lock-in that compounds and pays nothing until maturity, suited to accumulation during working years. SCSS is a retirement income scheme that pays interest out quarterly and returns the principal after five years, suited to generating cash flow from a lump sum you already have. SCSS also pays a higher current rate, 8.2 versus 7.1 percent, but its interest is taxable whereas PPF is entirely tax-free. A retiree uses SCSS for income; a younger saver uses PPF for growth.
When is SCSS interest paid?
Interest is credited quarterly, on the first day of April, July, October and January, directly to the bank account linked to your SCSS account. This fixed quarterly schedule is what makes SCSS useful as a retirement income source, since you receive predictable payments four times a year rather than a single lump at maturity. If a payout date is missed for any reason, the interest does not earn any further interest, so it is worth ensuring your linked account details are current. This calculator shows the quarterly figure you will receive on each of these dates.
Can I open more than one SCSS account?
Yes, you can open multiple SCSS accounts, individually or jointly with your spouse, but the total deposit across all your accounts cannot exceed the 30 lakh individual limit. A joint account with your spouse counts fully toward the primary holder’s limit, so it does not create extra capacity. To reach a household total of 60 lakh, each spouse who is individually eligible must open their own accounts up to 30 lakh each. This calculator computes income for a single 30 lakh limit; for a couple, run it twice, once for each spouse’s deposit.
Is SCSS safe?
Yes, SCSS is among the safest investments available in India. It is a Government of India scheme operated through post offices and authorised banks, carrying a full sovereign guarantee on both principal and interest, so there is no market risk or credit risk. For a retiree whose priority is preserving capital and receiving dependable income, this safety, combined with the high 8.2 percent rate, is precisely why SCSS is so widely recommended as the first home for retirement money before considering riskier options. This calculator models that guaranteed income with confidence, since the rate is locked and government-backed.
Does the SCSS rate change after I invest?
No. Although the government revises the SCSS rate every quarter for new accounts, the rate applicable to your account is fixed at the rate prevailing when you opened it, and stays locked for the full 5 year tenure. So if you open at 8.2 percent, you receive 8.2 percent for all five years even if the rate is later cut. This rate-lock protects your income from future reductions and is a strong reason to open an account when rates are high, as they are now. Only on extension after maturity does the then-current rate apply. This calculator uses your opening rate throughout.
Is this SCSS calculator accurate?
It applies the correct SCSS mechanics: simple interest paid out quarterly at your locked rate with no compounding, the 30 lakh deposit cap with excess returned without interest, the principal returned intact at maturity, the premature-closure penalties, and the post-tax income after the 80TTB deduction and your slab with the 2025 TDS threshold of 1 lakh. The figures match the official examples, such as 61,500 a quarter on a full 30 lakh deposit. Treat the result as an accurate income projection at the rate you enter, remembering that only the opening rate is locked and that tax depends on your total income and regime.