Step-by-Step ITR Filing Guide (Before 15th Sept Deadline 2025)

Filing your Income Tax Return (ITR) on time is not just a legal obligation — it helps you avoid penalties, ensures smooth loan approvals, and keeps your financial records clean. With the 15th September 2025 ITR filing deadline approaching, now is the best time to complete your return and stay compliant.

In this guide, we explain how to do Income Tax Return Filing Online in India step by step, along with common mistakes to avoid.

✅ Why File ITR Before the Deadline?

1. Avoid penalty of ₹5,000 (under Section 234F).

2. Carry forward losses for future tax benefits.

3. Hassle-free loan and visa approvals.

4. Prevents unnecessary notices from the IT Department.

🛠️ Step-by-Step ITR Filing Process (Online)

Step 1: Collect All Required Documents

• PAN Card

• Aadhaar Card (linked with PAN)

• Form 16 (for salaried individuals)

• Bank account details

• Income proofs (salary slips, business income, capital gains, etc.)

• Investment proofs (LIC, ELSS, PPF, etc.)

• TDS certificates

Step 2: Log In to the Income Tax Portal

👉 Visit the official Income Tax Portal
👉 Log in using your PAN (as User ID), password, and captcha.

Step 3: Choose the Relevant ITR Form

• ITR-1 (Sahaj): Salaried individuals with income up to ₹50 lakhs.

• ITR-2: Individuals/HUFs with income from more than one source (like capital gains).

• ITR-3: Professionals, freelancers, business income.

• ITR-4 (Sugam): Presumptive income scheme under Section 44AD/44ADA.

Step 4: Enter Income Details

• Fill in your salary, house property, business income, and other income sources.

• Declare deductions (80C, 80D, etc.) to reduce taxable income.

Step 5: Validate & Preview

• Cross-check all data with Form 26AS (tax credit statement).

• Ensure there are no mismatches in TDS and declared income.

Step 6: Pay Tax (If Any)

If you have additional tax liability, pay it using Challan 280 on the portal.

Step 7: E-Verify Your ITR

• E-verify using Aadhaar OTP, Net Banking, or Digital Signature Certificate (DSC).

• Once verified, your ITR is successfully filed. 🎉

⚠️ Common Mistakes to Avoid

• Missing the deadline (results in ₹5,000 penalty).

• Choosing the wrong ITR form.

• Not reconciling TDS with Form 26AS.

• Skipping interest income from savings accounts.

📌 Key Dates for ITR Filing 2025

• 15th September 2025 → Last date to file ITR without penalty.

• After deadline → Late fee of up to ₹5,000 + interest under 234A.

🙌 Need Expert Help?

Filing ITR can be confusing, especially for business owners, freelancers, and professionals. At Professional Duniya, we offer end-to-end Income Tax Return Filing Online in India — quick, hassle-free, and affordable.

📞 Contact us at +91-9310326387 or visit Professional Duniya.

🔎 FAQs on ITR Filing (2025)

Q1. What happens if I miss the 15th Sept deadline?
👉 You’ll have to pay a penalty of ₹5,000 and may lose benefits like carrying forward losses.

Q2. Can I revise my ITR after filing?
👉 Yes, revised returns can be filed before the assessment year ends.

Q3. Is it mandatory to e-verify ITR?
👉 Yes, without e-verification, your return is considered incomplete.

Q4. Who is exempt from filing ITR?
👉 Individuals with income below the taxable limit are exempt, but filing is recommended to keep financial records clean.