March 31 Deadline: Tax-Saving Checklist for FY2025-26

March 31 Tax-Saving Deadline: Your Complete FY2025-26 Checklist

The clock is ticking. March 31, 2026 marks the end of Financial Year 2025-26, and if you haven't completed your tax-saving investments yet, now is the time to act. Missing this deadline means missing out on deductions, facing penalties on advance tax, and potentially paying more tax than you need to.

Here's your complete checklist — task by task — to make sure you don't leave money on the table.

1. Pay Advance Tax by March 15

This one is urgent — the deadline is March 15, not March 31.

If you have income beyond salary — such as freelancing income, rental income, capital gains, or interest income — you're required to pay advance tax. By March 15, you should have paid 100% of your total estimated tax liability for the year.

What happens if you miss it?

• Section 234B: Interest of 1% per month on the shortfall amount if you've paid less than 90% of the total tax
• Section 234C: Interest of 1% per month for each missed quarterly instalment

Use our income tax calculator to quickly estimate your tax liability and check if you owe advance tax.

2. Complete Section 80C Investments (Up to ₹1.5 Lakh)

If you're on the old tax regime, Section 80C is your biggest tax-saving tool. You can claim deductions up to ₹1.5 lakh on investments in:

• PPF (Public Provident Fund) — safe, guaranteed returns, 15-year lock-in (PPF calculator)
• ELSS (Equity Linked Savings Scheme) — mutual funds with just 3-year lock-in, potential for higher returns (SIP calculator)
• Sukanya Samriddhi Yojana — for girl child education/marriage
• NSC (National Savings Certificate) — 5-year post office scheme
• Life insurance premiums — for policies with sum assured at least 10x the premium
• 5-year tax-saving FD — guaranteed returns but taxable interest (FD calculator)
• Home loan principal repayment — including stamp duty and registration
• Children's tuition fees — for up to 2 children

Quick tip: if you haven't invested yet and want the shortest lock-in, ELSS at 3 years is the winner. If you want the safest option, PPF gives you guaranteed returns with sovereign backing.

3. Claim the Extra ₹50,000 NPS Deduction

Under Section 80CCD(1B), you can get an additional ₹50,000 deduction by investing in NPS Tier-I — over and above the ₹1.5 lakh 80C limit. This is available only in the old tax regime.

For salaried employees, also check if your employer offers NPS contribution under 80CCD(2) — this works in both tax regimes and there's no upper cap beyond 14% of basic salary. Read our detailed guide on NPS tax benefits.

4. Submit Investment Proofs to Your Employer

Most companies set a deadline in February or March for submitting investment proofs. If you declared investments at the start of the year to reduce TDS, you need to back them up with documents:

• Life insurance premium receipts
• ELSS mutual fund investment statements
• PPF deposit receipts or passbook
• Home loan interest and principal certificates
• Health insurance premium receipts
• Rent receipts (for HRA claims)
• NPS contribution statements

If you don't submit proofs, your employer will deduct higher TDS in March, and you'll have to claim the refund when filing your ITR later.

5. Renew or Buy Health Insurance (Section 80D)

Health insurance premiums qualify for deduction under Section 80D — separate from 80C:

For Whom	Maximum Deduction
Self + Spouse + Children	₹25,000
Parents (below 60)	₹25,000
Parents (60 and above)	₹50,000
Total possible	Up to ₹75,000

If your health insurance is due for renewal, do it before March 31 to claim the deduction in this financial year.

6. Make Minimum PPF and SSY Deposits

This one catches people off guard. Both PPF and Sukanya Samriddhi Yojana (SSY) require minimum annual deposits to keep the account active:

• PPF minimum: ₹500 per year
• SSY minimum: ₹250 per year

If you miss the minimum deposit, your account becomes inactive/defaulted. Reviving it requires paying the shortfall plus a ₹50 penalty per year. Don't let a ₹500 deposit slip through the cracks!

7. Tax Loss Harvesting on Stocks and Mutual Funds

Under Section 112A, long-term capital gains (LTCG) from listed shares and equity mutual funds up to ₹1.25 lakh per year are tax-free.

If you have unrealised gains in your portfolio, consider this strategy:

1. Sell equity holdings with long-term gains (held over 1 year) up to ₹1.25 lakh
2. The gains are completely tax-free
3. Re-invest the same amount immediately (this resets your cost basis)

This is called tax loss harvesting (or more accurately, tax gain harvesting) and is perfectly legal. It effectively lets you "book" ₹1.25 lakh in profits each year without paying any tax.

8. File Updated ITR for FY2023-24

If you missed filing your income tax return for FY2023-24 (AY 2024-25), or need to correct a previously filed return, the deadline for filing an updated return is March 31, 2026.

Updated returns can be filed under Section 139(8A) by paying an additional 25% tax on the extra income. It's better to file late than face a notice later.

Quick Summary: March 31 Deadline Checklist

Task	Section	Max Benefit	Deadline
Advance tax payment	234B/234C	Avoid interest penalty	March 15
80C investments	80C	₹1.5 lakh deduction	March 31
NPS extra deduction	80CCD(1B)	₹50,000 deduction	March 31
Health insurance	80D	₹25,000-₹75,000	March 31
PPF/SSY minimum deposit	—	Keep account active	March 31
Tax gain harvesting	112A	₹1.25 lakh tax-free gains	March 31
Updated ITR (FY23-24)	139(8A)	Avoid future notice	March 31

Don't wait until the last day — online systems tend to slow down as March 31 approaches. Complete your tax-saving tasks this week and enter the new financial year stress-free.

Disclaimer: This article is for educational purposes only and does not constitute financial advice. Tax rules may change. Please consult a qualified tax advisor or chartered accountant for advice specific to your situation.