Filing your first ITR? Here's a checklist to avoid costly mistakes

The deadline for filing income-tax returns (ITR) for the financial year 2025-26 has been extended to August 31.
Filing your first ITR? Here's a checklist to avoid costly mistakes
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With the deadline for filing income-tax returns (ITR) for the financial year 2025-26 (assessment year 2026-27) extended to August 31, first-time taxpayers have more time to complete the process. However, waiting until the last minute could lead to technical glitches, errors and delayed refunds. A little preparation can make filing your first return quick and hassle-free.

The Income Tax Department has already enabled the Excel utilities for ITR-1, ITR-2, ITR-3, ITR-4, ITR-5 and ITR-7, allowing taxpayers to prepare returns offline before uploading them through the e-filing portal.

Why filing early makes sense

  • Avoid heavy traffic on the e-filing portal near the deadline

  • Get tax refunds processed faster

  • Have enough time to correct mistakes or respond to notices

  • Reduce the risk of missing mandatory documents

1. Check whether you must file an ITR

Filing an income-tax return is mandatory if your income exceeds the prescribed exemption limit. You may also need to file a return if you meet certain specified financial criteria, including:

  • Holding assets in India or abroad

  • Investing in shares, securities or ESOPs

  • Bank deposits exceeding ₹50 lakh

  • Savings or current account transactions exceeding ₹1 crore

  • Annual electricity bills above ₹1 lakh

  • Overseas travel expenditure above ₹2 lakh

  • Business sales exceeding ₹60 lakh

2. Know your taxable income

Your taxable income is calculated after deducting eligible exemptions and deductions from your total income.

Besides salary, taxable income may include:

  • Interest from bank deposits

  • Capital gains

  • Dividend income

  • Rental income

  • Other taxable earnings

Eligible deductions may include investments in:

  • Public Provident Fund (PPF)

  • National Pension System (NPS)

  • Life insurance

  • Home loan interest

  • Other tax-saving investments

3. Choose the right tax regime

Taxpayers can opt for either the old tax regime or the new tax regime.

The better option depends on:

  • Your salary level

  • Eligible deductions and exemptions

  • Tax-saving investments

Using an online tax calculator or consulting a chartered accountant can help identify the more tax-efficient option.

4. Remember the filing deadline

For FY 2025-26 (AY 2026-27):

  • Due date for filing without penalty: August 31, 2026

  • Belated returns can be filed up to December 31, 2026

  • Late filing may attract a penalty depending on the delay and tax payable

5. Keep all documents ready

Before starting the filing process, keep these documents handy:

  • PAN card

  • Aadhaar card (linked with PAN)

  • Form 16 from your employer

  • Bank account details

  • Investment proof

  • Home loan interest certificate, if applicable

  • Insurance premium receipts

  • Details of other income

6. Verify Form 16 and Form 26AS

Do not rely only on Form 16.

Cross-check the following:

  • Form 16 issued by your employer

  • Form 26AS

  • Annual Information Statement (AIS)

These documents help verify:

  • Tax deducted at source (TDS)

  • Interest income

  • Dividend income

  • Securities transactions

  • Foreign remittances

  • Other reported financial transactions

Matching these records reduces the chances of receiving tax notices later.

7. Complete e-verification

Filing is not complete until the return is verified.

You can e-verify using:

  • Aadhaar OTP

  • Net banking

  • Electronic Verification Code (EVC)

Failure to complete verification within 30 days could delay processing of the return and any refund due.

8. Offline verification is also possible

Those unable to complete e-verification can verify their return by sending the signed ITR-V acknowledgement to the Centralised Processing Centre (CPC) in Bengaluru within the prescribed time limit.

9. Select the correct ITR form

Choosing the wrong form may result in rejection of the return.

The commonly used forms include:

  • ITR-1 (Sahaj): Salaried individuals with one house property and income from other sources

  • ITR-2: Individuals and Hindu Undivided Families (HUFs) without business income

  • ITR-3: Individuals or HUFs having business or professional income

  • ITR-4 (Sugam): Taxpayers opting for the presumptive taxation scheme

The Income Tax e-filing portal also offers a "Help me decide" feature to guide users to the appropriate form.

10. Missed returns? ITR-U can help

Taxpayers who failed to file returns for any of the previous assessment years can use the updated return facility (ITR-U), subject to applicable conditions.

For the current assessment year, taxpayers who miss the August 31 deadline can still submit a belated return, although they may have to pay a late filing fee and interest on any outstanding tax liability.

Cheer up!

For first-time taxpayers, the income-tax filing process can appear complicated, but proper preparation makes it much easier. Keeping the necessary documents ready, selecting the correct form, reconciling tax details with Form 26AS and AIS, and completing verification on time can help avoid penalties, delays and unnecessary compliance issues. Filing well before the deadline also leaves enough room to correct mistakes, if any.

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