The January–March Calendar
For salaried earners in India the financial year ends on 31 March 2027, and the last quarter has its own rhythm: HR asks for investment proofs in January, the advance-tax instalment is due on 15 March, and every 80C, 80D and NPS contribution has to be made by 31 March to count for FY 2026-27. Miss the proof deadline and the extra TDS comes out of February and March salary; miss 31 March and the deduction is gone for the year.
The money problem is timing, not knowledge. Everyone knows PPF and ELSS exist; the difficulty is finding ₹50,000–₹1.5 lakh in February when Pongal, the school fees and the wedding season have just gone through the same account. This guide is a funding plan for the quarter, and a check on whether the old-regime scramble is even worth it for you any more.
| Date | What happens | What you need ready |
|---|---|---|
| Early–mid January 2027 | Most employers open the investment-proof window (dates vary by company) | Rent receipts, insurance premium receipts, PPF/ELSS statements, home-loan certificate |
| Late January – February | Proof submission closes; unproven declarations are reversed and TDS rises for Feb–Mar | The last 80C top-ups actually made, not just planned |
| 15 March 2027 | Fourth (final) advance-tax instalment for anyone with tax due beyond TDS (freelance income, capital gains, interest) | An estimate of non-salary income for the year |
| 31 March 2027 | Last day for 80C / 80D / 80CCD(1B) contributions to count for FY 2026-27 | The remaining gap funded |
Does 80C Still Matter? Old vs New Regime
Since FY 2023-24 the new regime is the default, and for FY 2026-27 Budget 2026 left its slabs unchanged: nil up to ₹4 lakh, 5% to ₹8 lakh, 10% to ₹12 lakh, 15% to ₹16 lakh, 20% to ₹20 lakh, 25% to ₹24 lakh and 30% above, with a ₹75,000 standard deduction for salaried earners and a Section 87A rebate that makes taxable income up to ₹12 lakh effectively tax-free. Under the new regime, 80C, 80D and HRA do not apply — there is nothing to prove in January.
The old regime still wins for some people: a large HRA claim in a metro, a home loan, and the full ₹1.5 lakh of 80C plus NPS and health insurance can add up to more than the new regime's simplicity. The honest test is to run both numbers once — our free income tax calculator and HRA calculator do it in a minute — and then stop investing for tax reasons if the new regime wins. A PPF contribution is still a fine savings decision; it is just not a tax decision any more, and it should not be funded by a March loan.
If the old regime wins for you, the rest of this guide is the plan. If the new regime wins, skip to the funding plan anyway: the same three months still carry advance tax, school fees and the wedding season, and the ₹1.5 lakh you would have scrambled for is better going to the emergency fund on a schedule.
A Three-Month Funding Plan
- Find the gap in the first week of January. Add up what you have already put into 80C this year — EPF employee contribution (check the payslip), the insurance premium, the children's tuition fees, any PPF or ELSS SIPs since April. Subtract from ₹1.5 lakh. That number, plus the NPS ₹50,000 under 80CCD(1B) if you use it, plus the health-insurance premium under 80D, is the target.
- Divide it by three, not by one. A ₹60,000 gap is ₹20,000 in January, February and March — survivable. The same ₹60,000 on 28 March is a credit-card cash advance at 3% a month.
- Cut the January spend, not the March investment. The Pongal and New Year spending is over; January is naturally the cheapest month of the quarter. Take the tax money out on salary day, before it reads as available.
- Use the SIP you already have. An ELSS SIP running since April has already done most of the work; a one-time top-up in February closes the gap without a new decision.
- Do not buy insurance for the deduction. The traditional endowment plan sold in March "for 80C" is the most expensive way to save ₹46,800 of tax that exists. PPF, ELSS, NPS and the EPF you already pay are enough.
Our PPF, NPS and SIP calculators show what each rupee does over the years — useful when deciding which of the three gets the top-up.
Investment Proofs Without the Panic
Proofs are a paperwork problem that turns into a money problem only when the paperwork is late. Keep one folder — physical or in your phone — with:
- Rent receipts for every month (and the landlord's PAN if annual rent exceeds ₹1 lakh); a rent agreement helps.
- Life and health insurance premium receipts for the policy year.
- PPF passbook or statement, ELSS account statements, NPS transaction statement.
- Home-loan interest certificate from the lender (issued in January for the year).
- Tuition fee receipts for up to two children.
- Form 12BB, the declaration your employer asks you to sign — fill it from the folder, not from memory.
Submit inside the window even if a contribution is still pending; most payroll systems let you add a proof up to the closing date, and a partial submission is better than a reversed declaration.
Advance Tax and Other 15 March Items
If you earn anything TDS does not fully cover — freelance income, rent received, capital gains from selling shares or mutual funds, interest on deposits above the threshold — and the tax due for the year exceeds ₹10,000, you owe advance tax in instalments, the last of them by 15 March 2027. Estimate the non-salary income in January, use the calculator to see the tax on it, and set that amount aside in February. Interest under sections 234B and 234C is small per month but it is a fine for not planning, and it is avoidable.
Two more March items that catch people: the PPF minimum of ₹500 to keep the account active, and NPS Tier I minimum of ₹1,000 a year. Both are small; both are forgotten.
Track It in Pocket Clear
Create a "Tax FY27" category in Pocket Clear with the January–March target as its budget, and log every contribution as you make it — the PPF transfer, the ELSS top-up, the NPS payment, the insurance premium. The category total on Home tells you how much of the target is funded; by 15 March you should be looking at a number, not a guess.
Log the tax money as Money Out on salary day, in a payment type called "Savings" or "Investments", so the Home balance reflects what is genuinely spendable this month. Pocket Clear never links your bank, works fully offline, and keeps every transaction on your phone — a proofs folder in your own hands, not on a server.
If the household has two salaries, Partner Mode gives both of you one shared view of the quarter, so the 80C gap is closed once, not twice.
Frequently Asked Questions
What is the last date to invest for tax saving in FY 2026-27?
Contributions under sections 80C, 80D and 80CCD(1B) must be made on or before 31 March 2027 to count for FY 2026-27. Employers typically close their investment-proof windows in January or February, so the contribution should ideally be made before the proof deadline your HR sets; anything after that is claimed in the ITR instead.
Do I still need 80C investments under the new tax regime?
No. Under the new regime, which is the default, 80C, 80D and HRA deductions do not apply; you get the ₹75,000 standard deduction and, for FY 2026-27, the Section 87A rebate that makes taxable income up to ₹12 lakh effectively tax-free. Run both regimes once with a calculator; if the new regime wins, keep investing for savings reasons, not for tax reasons.
When is the last advance tax instalment for FY 2026-27?
15 March 2027. Advance tax applies when your tax due for the year, beyond TDS, exceeds ₹10,000 — typically freelance income, rent received, capital gains or interest income. Interest under sections 234B and 234C applies if instalments are short or late.
How much tax does the full ₹1.5 lakh 80C limit save?
Under the old regime, up to ₹46,800 for someone in the 30% bracket (₹1.5 lakh × 31.2% including cess), less in lower brackets. Under the new regime it saves nothing, because 80C does not apply there.
What documents do I need for investment proof submission?
Rent receipts (with the landlord's PAN if annual rent exceeds ₹1 lakh), life and health insurance premium receipts, PPF, ELSS and NPS statements, the home-loan interest certificate, tuition fee receipts, and the Form 12BB declaration your employer provides. Keep them in one folder through the year and fill Form 12BB from the folder.
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