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Avoid Costly ITR Filing Mistakes for FY 2025-26

CA Lokendra Singh Tomar
CA Lokendra Singh Tomar2 Aug 2026 · 8 min read

Avoid Costly ITR Filing Mistakes for FY 2025-26

ITR Filing FY 2025-26: Avoid 10 Costly Mistakes

Choosing the Correct ITR Form

As a CA, I often see how selecting the correct ITR form is pivotal in ensuring compliance and avoiding unnecessary penalties. For individuals whose income is up to ₹50 lakh from salary, one house property, and other sources, ITR-1 (SAHAJ) is the suitable choice. However, if your income includes business or professional earnings, ITR-3 becomes mandatory. Choosing incorrectly can result in the rejection of your return and possible penalties.

For HUFs and individuals with income above ₹50 lakh or multiple house properties, ITR-2 is advisable. For ITR filing FY 2025-26, it’s crucial to thoroughly analyze your income streams before deciding on the form. A consultation with a Chartered Accountant can be invaluable in providing clarity if you're uncertain about which form suits your situation.

Example:

Example: Consider Raj, who earns ₹48 lakh annually from his salary along with interest from savings. He should file using ITR-1. On the other hand, if Raj also had income from a side business, ITR-3 would be necessary.

  • Evaluate all your income sources.
  • Cross-check with Form 26AS for a comprehensive view of your income.
  • Select the form that aligns with your income profile.

Understanding Tax Regimes

For ITR filing FY 2025-26, the decision between the old and new tax regimes can significantly impact your tax liability. The old regime provides various deductions and exemptions, including Section 80C, HRA, and Home Loan Interest. In contrast, the new regime offers lower tax rates but fewer deductions.

For FY 2026-27, the new tax regime starts at 0% for income up to ₹3 lakh, increasing to 30% for income above ₹15 lakh. It’s important to consider your potential deductions under the old regime to determine which is more beneficial for you. Remember, taxpayers need to opt into the old regime every year since the new regime is the default option.

I recommend calculating your tax liability under both regimes to make a well-informed decision. This comparison can significantly aid in maximizing your tax savings.

  • Assess all available deductions under the old regime.
  • Compare the tax rates and slabs of both regimes.
  • Choose the regime that minimizes your tax liability.

Maximizing Deductions and Exemptions

Maximizing deductions is a strategic approach to reducing your taxable income. Key deductions under the old regime include Section 80C (up to ₹1.5 lakh), Section 80D (₹25,000 for medical insurance, ₹50,000 for senior citizens), and Section 80CCD(1B) for NPS (₹50,000). Ensure that you claim all eligible exemptions, such as HRA and LTA.

Investing in tax-saving instruments like PPF, ELSS, and NSC can significantly reduce your tax burden. It’s essential to fully utilize these opportunities.

For salaried individuals, Forms 16 and 26AS provide detailed breakdowns of TDS and income, helping to ensure that no deductions are overlooked. Regular review and planning can lead to optimal tax savings.

  • Examine Form 16 and Form 26AS for TDS details.
  • Invest in tax-saving instruments.
  • Claim all eligible deductions and exemptions.

Steps to File ITR Online

Filing ITR online is a streamlined process that facilitates quick and precise submission of returns. Here’s how to ensure a smooth experience:

Example: Consider Rajesh, a software engineer with an income of ₹15 lakhs, who claims HRA exemption on his Delhi rent of ₹20,000/month, resulting in a saving of nearly ₹1.8 lakhs in taxable income.
  • Access the official e-filing portal and log in with your credentials.
  • Download the relevant ITR form and fill it offline, or use the online option directly on the portal.
  • Ensure all income details match Form 26AS and AIS to avoid discrepancies.
  • Upload the completed form and proceed to verification using Aadhaar OTP, EVC, or by sending a signed ITR-V to CPC, Bangalore.

Accurate filing and timely submission can prevent penalties and expedite refunds. Following a step-by-step approach ensures compliance with tax regulations.

The deadline for filing ITR for individuals and HUFs for AY 2027-28 is July 31, 2027. Businesses requiring audit must file by October 31, 2027, and transfer pricing cases by November 30, 2027.

Common Mistakes and How to Avoid Them

As a professional, I’ve observed that many taxpayers make easily avoidable errors, such as using incorrect forms or missing deductions. Here are some common pitfalls and their solutions:

  • Using the wrong ITR form can cause rejection. Verify your form choice against your income sources.
  • Missing the deadline incurs a late filing fee under Section 234F: ₹1,000 if total income is ≤ ₹5 lakh, otherwise ₹5,000.
  • Failure to pay due taxes results in interest at 1% per month under Section 234A.

Timely planning and consultation with a tax advisor can help prevent these costly mistakes. Staying updated with tax laws and deadlines ensures compliance.

Penalties for under-reporting income can be severe, with Section 270A imposing a 50% penalty on under-reported income and 200% for misreporting.

Tax SlabOld Regime (FY 2026-27)New Regime (FY 2026-27)
Up to ₹2.5 lakh0%0%
₹2.5 lakh - ₹5 lakh5%5%
₹5 lakh - ₹10 lakh20%10%
Above ₹10 lakh30%15% - 30%

Frequently Asked Questions

Q: What is the late filing fee for ITR?

The late filing fee under Section 234F is ₹1,000 if the total income is ≤ ₹5 lakh, and ₹5,000 otherwise.

Q: Can I file a belated ITR after the deadline?

Yes, belated ITRs can be filed until December 31, 2027, for AY 2027-28, under Section 139(4).

Q: How much is the deduction limit under Section 80C?

The deduction limit under Section 80C is ₹1.5 lakh for specified investments like PPF, ELSS, and NSC.

Q: What are the tax rates under the new regime?

The new tax regime for FY 2026-27 starts at 0% for income up to ₹3 lakh, going up to 30% for income above ₹15 lakh.

Q: What penalties apply for under-reported income?

Under Section 270A, a 50% penalty applies to under-reported income, with 200% for misreporting.

Real-Life Scenarios

  • Scenario 1: An employee changes jobs mid-year — how to consolidate Form 16 from two employers and avoid TDS shortfall.
  • Scenario 2: A salaried employee receives ESOPs — taxation at exercise (perquisite) vs. at sale (Capital Gains).
  • Scenario 3: An employee has rental income alongside salary — how to combine property income with salary for correct ITR filing.

Pro Tips from Our CAs

  • 💡 Submit your investment declarations to HR in April — not February — to ensure TDS is spread correctly across all 12 months.
  • 💡 Verify Form 26AS and AIS before filing: mismatches are the #1 cause of income tax notices.
  • 💡 Open an NPS Tier-I account for an extra ₹50,000 deduction under Section 80CCD(1B) — applicable even in the old regime.
  • 💡 Keep scanned copies of all investment proofs, rent receipts, and Form 16s for at least 6 years.
  • 💡 If you changed jobs during the year, provide your new employer with salary details from the old employer to avoid a TDS shortfall.

Conclusion

Filing your ITR accurately and on time for FY 2026-27 is vital for compliance and maximizing tax savings. By choosing the correct ITR form, understanding the tax regimes, and claiming all eligible deductions, taxpayers can avoid penalties and enhance their financial planning. Stay informed and consider consulting a Chartered Accountant for personalized advice to navigate the complexities of tax filing.

⚠️ Disclaimer: This content is for informational purposes only and should not be construed as professional tax advice. Please consult a qualified Chartered Accountant for advice specific to your situation.

Tags:
itr filingsection 80chra exemptionppf investmenttax deductionsincome tax returnay 2026-27fy 2025-26
CA Lokendra Singh Tomar

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CA Lokendra Singh Tomar

Chartered Accountant specialising in salaried individual taxation, Form 16 compliance and investment planning.

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