Income Tax Filing 2026: 10 Smart Tips to File Your ITR Correctly Under the New Income Tax Act

Are you ready for the ITR filing season for FY 2025-26 (AY 2026-27)? With the Income Tax Act, 2025 now in effect from April 1, 2026 — replacing the six-decade-old Income Tax Act, 1961 — there are important structural changes every taxpayer should know about. The good news: tax rates, deductions, and most rules remain unchanged. The better news: the law is now simpler, digitally-driven, and more taxpayer-friendly.

At TaxWink, we cut through the complexity so you don't have to. Here are 10 practical, SEO-optimised, and up-to-date tips to help you file your Income Tax Return accurately, on time, and with maximum savings.

What Has Changed Under the New Income Tax Act, 2025?

Before we dive into the tips, here is a quick overview of key changes effective from April 1, 2026:

• The Income Tax Act, 1961 is replaced by the Income Tax Act, 2025 (also referred to as the Income Tax Bill, 2025).
• The law is now leaner — reduced from 819 sections to 536 sections across 23 chapters.
• The term 'Assessment Year' and 'Financial Year' now coexist with a new term: 'Tax Year' (April 1 to March 31).

Importantly, tax rates, slabs, deductions under 80C/80D, HRA, and the old vs new regime structure all remain unchanged.

ITR Filing Deadlines for FY 2025-26 (AY 2026-27) — Know Your Due Date

Missing your ITR deadline can cost you penalties, interest, and the loss of carry-forward losses. Here are the updated deadlines:

⚠️ Note: ITR-1 and ITR-2 are due by 31 July 2026 for individuals whose accounts don't require an audit. ITR-3 and ITR-4 filers (business/profession income, non-audit) now have an extended deadline of 31 August 2026 — a new change introduced from FY 2025-26 onwards. Revised returns can now be filed up to 31 March of the assessment year — extended from the earlier deadline of 31 December. Do not bank on government extensions; always aim to file at least 2-3 weeks early.

Tip 1: Choose the Correct ITR Form

Filing the wrong ITR form leads to a 'defective return' notice and unnecessary follow-ups. As an individual taxpayer:

• ITR-1 (Sahaj): Salaried individuals with total income up to ₹50 lakh from salary, one house property, and other sources.
• ITR-2: Individuals with capital gains, more than one house property, or foreign income.
• ITR-3: Individuals with income from business or profession (with books of accounts).
• ITR-4 (Sugam): Individuals opting for presumptive taxation under Sections 44AD, 44ADA, or 44AE.

Always verify your applicable form on the official Income Tax e-Filing portal before you begin.

Tip 2: Reconcile Form 26AS and AIS Before Filing

One of the most common reasons for income tax notices is a mismatch between your return and the department's records. Before you file:

• Download your Form 26AS (Tax Credit Statement) from the IT portal — it shows TDS deducted by your employer, banks, and others.
• Download the Annual Information Statement (AIS) — it captures interest, dividends, mutual fund transactions, property purchases, and more.
• Verify that all figures in your return match the AIS and Form 26AS exactly.

Any mismatch can trigger a scrutiny notice under the Income Tax Act, 2025. Reconcile first, then file.

Tip 3: Compare the Old and New Tax Regime Before You Decide

The new tax regime remains the default regime under the Income Tax Act, 2025. However, individual taxpayers can still opt for the old regime if it results in lower tax. Here's a quick guide:

• New Tax Regime: Lower slab rates but no exemptions or deductions (no HRA, LTA, 80C, 80D, etc.).
• Old Tax Regime: Higher slab rates but full deductions and exemptions available.

Tip 4: Exhaust Your Section 80C Deduction Limit (₹1.5 Lakh)

Under the old tax regime, Section 80C remains one of the most powerful tax-saving tools — offering a deduction of up to ₹1.5 lakh on qualifying investments and expenses. These include PPF, ELSS mutual funds, 5-year bank FDs, life insurance premiums, NSC, tuition fees for children, and home loan principal repayment. Plan your 80C investments at the start of the financial year, not in March, to avoid rushed decisions.

Tip 5: Claim Health Insurance Deduction Under Section 80D

Premiums paid for health insurance are deductible under Section 80D — up to ₹25,000 for yourself, spouse, and children, and an additional ₹25,000 (or ₹50,000 if parents are senior citizens) for parents' health cover. Additionally, preventive health check-up expenses up to ₹5,000 are included within this limit. This is a widely underutilised deduction — make sure you claim it every year.

Tip 6: Report All Income Sources — No Exceptions

The Income Tax Department cross-references data from banks, employers, tenants, mutual fund houses, and buyers. Failure to disclose any income — even unintentionally — can result in penalties and interest. Make sure to report:

• Savings and fixed deposit interest income.
• Dividend income from shares and mutual funds.
• Rental income from house property.
• Freelance or consultancy earnings.
• Capital gains from sale of shares, mutual funds, or property.
• Cryptocurrency or virtual digital asset (VDA) income — now specifically tracked under the Income Tax Act, 2025.

When in doubt — disclose. The cost of transparency is zero; the cost of concealment can be enormous.

Tip 7: Pay Advance Tax to Avoid Interest Penalties

If your estimated tax liability for the year exceeds ₹10,000 (after TDS), you are required to pay advance tax in four instalments — 15 June (15%), 15 September (45%), 15 December (75%), and 15 March (100%). Failure to pay advance tax on time attracts interest under Section 234B and 234C. Salaried individuals whose entire tax is covered by TDS are generally exempt from this obligation.

Tip 8: Apply for a Nil TDS Certificate If Applicable

A key benefit restored under the Income Tax Act, 2025 is the Nil TDS Certificate (Lower Deduction Certificate). If you have no tax liability — for example, if you are a senior citizen with only tax-exempt interest income — you can apply for a nil or lower TDS certificate to avoid unnecessary deductions at source. This prevents over-deduction and the hassle of claiming refunds later.

Tip 9: E-Verify Your Return Within 30 Days of Filing

Filing your ITR is only step one. An unverified ITR is treated as if it was never filed. Always e-verify your return within 30 days of filing using one of these methods: Aadhaar OTP, net banking, bank ATM, Demat account, or Digital Signature Certificate (DSC). E-verification via Aadhaar OTP is the fastest and most convenient option for most taxpayers.

Tip 10: Stay Organised — Keep Documents Ready Year-Round

Good documentation is the foundation of stress-free tax filing. Maintain a dedicated folder (physical or digital) with the following:

• Form 16 (from employer) and Form 16A (for TDS on other income)
• Bank account statements for all accounts
• Investment proofs — PPF, ELSS, NSC, LIC premium receipts
• Health insurance premium receipts
• Rent receipts and rental agreement (for HRA claim)
• Capital gain statements from broker / mutual fund house
• Home loan certificate (principal and interest split)
• Advance tax payment challans

Keeping these organised throughout the year means you will never scramble for documents in July.

Bonus Tip: File Early — Don't Wait for an Extension

In AY 2025-26 (FY 2024-25), CBDT was forced to extend the ITR deadline from July 31 to September 16, 2025, due to structural changes in the ITR forms and portal readiness issues. However, extensions are never guaranteed. The Income Tax Act, 2025 introduces significant structural changes that may again affect ITR form designs for AY 2026-27. Filing early protects you against last-minute portal crashes, gives you more time to spot errors, and speeds up your refund.

Conclusion: Tax Filing Under the Income Tax Act, 2025 — What You Need to Remember

The Income Tax Act, 2025 is a landmark reform, but for most individual taxpayers, it means business as usual — the same tax rates, the same deductions, and the same filing process. What has changed is that the law is now simpler, more digital, and more transparent. At TaxWink, we believe that staying informed is the first step to staying compliant.

File early. Reconcile your AIS. Choose the right tax regime. And when in doubt, consult a tax professional.

Have questions about your specific tax situation? Explore more expert articles on TaxWink.com, or connect with our panel of Chartered Accountants for personalized guidance.

Disclaimer: This blog is for informational and educational purposes only and does not constitute professional tax or legal advice. Tax laws are subject to change. Please consult a qualified Chartered Accountant for advice specific to your situation.