Complete Guide to ITR Filing 2026: Last Date, Step-by-Step Process & Which ITR Form to Choose

Filing your Income Tax Return (ITR) is not just a legal obligation—it’s a crucial financial activity that ensures compliance, enables refunds, and keeps your financial records clean.

As the ITR filing season for FY 2025–26 (AY 2026–27) approaches, many taxpayers still have questions:

• What is the last date to file ITR?
• How do I file ITR online?
• Which ITR form should I choose?

This guide answers all of these in a clear, practical, and step-by-step manner.

ITR Filing Last Date 2026 (AY 2026–27)

For most individual taxpayers, the due date to file ITR is expected to be:

• Individuals/HUF (No Audit): July 31, 2026
• Non-Audit Businesses/Professionals: August 31, 2026
• Tax Audit Cases: October 31, 2026
• Belated/Revised Returns: December 31, 2026
• What if you miss the deadline?

You can still file a belated return under Section 139(4), but penalties apply:

• ₹5,000 penalty if filed after due date and your total income is greater than 5 lakh rupees.
• ₹1,000 penalty if total income is below ₹5 lakh
• Interest under Section 234A/B/C may also apply

Late filing can also lead to:

• Loss of certain deductions
• Delay in refunds
• Ineligibility to carry forward losses

Step-by-Step Guide to File ITR Online

Filing your ITR online is now a streamlined process through the Income Tax portal. Here’s how to do it:

Step 1: Login to Income Tax Portal

Visit the official e-filing portal and log in using your PAN/Aadhaar and password.

Step 2: Choose “File Income Tax Return”

• Select Assessment Year 2026–27
• Choose Online Mode

Step 3: Select the Correct ITR Form

(We’ll help you choose the right one in the next section.)

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Step 4: Pre-Filled Data Verification

The system auto-fills data from:

• Form 16
• AIS (Annual Information Statement)
• Form 26AS

👉 Carefully verify all details before proceeding.

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Step 5: Enter Income Details

Include:

• Salary income
• Business/professional income
• Capital gains
• Other income (interest, etc.)

Step 6: Claim Deductions

Add eligible deductions such as:

• Section 80C (LIC, PPF, ELSS)
• Section 80D (Health insurance)
• HRA, home loan interest, etc.

Step 7: Compute Tax & Verify Liability

• Check total tax payable or refund
• Pay any outstanding tax if applicable

Step 8: Submit & Verify ITR

Verification can be done via:

• Aadhaar OTP
• Net banking
• EVC or physical ITR-V

👉 Your return is valid only after verification

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Which ITR Form Should You Choose? (ITR-1, ITR-2, ITR-3, ITR-4 Explained in brief)

Choosing the correct ITR form is critical. Filing the wrong form can make your return defective and need to face other consequences too.

ITR-1 (Sahaj)

Best for: Salaried individuals

• Income up to ₹50 lakh
• Income from salary, one house property, and other sources

👉 Not suitable if you have capital gains or business income

ITR-2

Best for: Individuals/HUFs without business income

• Capital gains
• Multiple house properties
• Foreign income/assets

ITR-3

Best for: Business owners and professionals

• Income from business/profession
• Partners in firms

ITR-4 (Sugam)

Best for: Presumptive income scheme users

• Small businesses (Section 44AD)
• Professionals (Section 44ADA)

👉 Simplified return with lower compliance

ITR-5 for Partnership Firm

ITR- 6 FOR Private and Limited company

ITR-7 FOR TRUSTAND NGOs

Who can opt?

• Resident Individual
• Resident HUF
• Resident Partnership Firm (excluding LLP)

Turnover Limit

• Up to ₹2 crore
• Up to ₹3 crore if cash receipts ≤ 5%

Income Declaration

• 8% of turnover (normal cases)
• 6% of turnover (digital receipts)

Section 44ADA (For Professionals)

Who can opt?

• Resident professionals such as:
  • Doctors
  • Lawyers
  • Chartered Accountants
  • Engineers
  • Architects

Limit

• Gross receipts up to ₹75 lakh (subject to conditions)

Income Declaration

• Minimum 50% of gross receipts

Common Mistakes to Avoid While Filing ITR

Even experienced taxpayers make errors. Avoid these:

• ❌ Selecting the wrong ITR form
• ❌ Not matching AIS /TIS AND 26AS with income details
• ❌ Missing deductions
• ❌ Not reporting all income sources
• ❌ Choosing wrong Head and regime
• ❌ Avoiding actual banking turnover /receipts
• ❌ Forgetting to verify ITR

Documents Required for ITR Filing

Keep these ready:

• PAN & Aadhaar
• Form 16 -IF SALARIED
• ALL Bank statements
• Investment proofs
• Form 26AS & AIS/ TIS
• Capital gains statements includes, Trading PNL A/c., Holding Statement and Ledger for FY 25-26 (if applicable)

Pro Tips from Tax Experts

• Always cross-check AIS vs your income
• Choose between old vs new tax regime wisely
• Choose your consultant and see their steps whether is taking proper care of your incomes or not
• File early to avoid last-minute issues
• Consult a professional if you have complex income and transactions
• Don’t go for only cheap who works for 1000 or 1500/- by taking your only Bank passbook and other documents.

Final Thoughts

ITR filing doesn’t have to be complicated—if done correctly and on time, it can be a smooth process.

The key is to:

• Know your deadline
• Follow the correct process
• Choose your consultant wisely before assigning task.
• Choose the right ITR form

If you’re unsure at any step, it’s always better to seek expert guidance rather than risk notices or penalties.

Need Help with ITR Filing?

At CA Desk, we help individuals and businesses file accurate, compliant, and optimized tax returns.

👉 Get in touch today and file your ITR stress-free and on time. EXPLORE – https://thecadesk.com/itr-filing/

You may write us at info@thecadesk.com for filing request or any further enquiry or discussion.

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