Complete Guide to
Income Tax Return (ITR)
Filing in India
Everything you need to know about filing your Income Tax Return — ITR forms, eligibility, due dates, step-by-step process, penalties, and expert tips for Assessment Year 2025–26.
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What is Income Tax Return (ITR)?
An Income Tax Return (ITR) is a prescribed form through which a taxpayer declares their income earned during a financial year, deductions claimed, and taxes paid to the Income Tax Department of India. Filing an ITR is a legal obligation for eligible individuals and entities under the Income Tax Act, 1961.
For Assessment Year (AY) 2025–26 — which covers income earned during Financial Year (FY) 2024–25 (April 1, 2024 to March 31, 2025) — taxpayers are required to file their returns accurately and within the prescribed due dates.
Legal Compliance
Filing ITR is mandatory for incomes above ₹3 lakhs (New Regime) and is required for loans, visa applications, etc.
Claim Refunds
If excess TDS has been deducted, filing ITR is the only way to claim a refund from the Income Tax Department.
Carry Forward Losses
Losses from capital gains or business can be carried forward only if ITR is filed on time.
Proof of Income
ITR acknowledgement acts as official income proof for loans, credit cards, visa applications, and tenders.
Who is Required to File ITR?
Filing ITR is mandatory in the following situations for the AY 2025–26:
- Total income exceeds the basic exemption limit (₹3 lakh under New Regime / ₹2.5 lakh under Old Regime)
- Individual has deposited more than ₹1 crore in one or more bank accounts (current account)
- Has paid electricity bills exceeding ₹1 lakh in aggregate during the year
- Incurred foreign travel expenses of more than ₹2 lakh during the year
- Income from foreign assets or foreign income is present
- Eligible for TDS/TCS credit, and wishes to claim refund
- Resident with signing authority in a foreign account
- Companies and LLPs — mandatory filing regardless of profit or loss
- Firms (Partnership) — mandatory, even if no income
- Trusts and Associations — if income exceeds exemption or registration requires
- Sole Proprietors — if business income exceeds basic exemption
- Professionals (doctors, lawyers, CAs, etc.) — if professional income exceeds exemption
- Any entity with income from foreign sources or with foreign assets
- Deposited ≥ ₹1 crore in aggregate in one or more current bank accounts
- Incurred ≥ ₹2 lakh expenditure on foreign travel (for self or any other person)
- Incurred ≥ ₹1 lakh on electricity consumption during the year
- Business turnover ≥ ₹60 lakhs
- Professional income ≥ ₹10 lakhs
- TDS/TCS ≥ ₹25,000 (₹50,000 for senior citizens aged 60+)
ITR Forms — Which One to Use?
Choosing the correct ITR form is crucial. Using a wrong form can result in a defective return. Here is a quick guide:
| ITR Form | Who Should File | Income Sources Covered | Who CANNOT Use |
|---|---|---|---|
| ITR-1 (Sahaj) Most Common | Resident individuals with simple income | Salary/Pension, One house property, Other sources (interest etc.), Agricultural income up to ₹5,000 | Total income > ₹50 lakh; Foreign income/assets; Director in company; Unlisted equity shares |
| ITR-2 | Individuals & HUFs (no business income) | Salary, Multiple house properties, Capital gains, Foreign income/assets, Agricultural income > ₹5,000 | Those with income from business or profession |
| ITR-3 | Individuals & HUFs with business/profession income | Business/professional income (non-presumptive), All other income types | Partners in firms (they file ITR-2 or ITR-3) |
| ITR-4 (Sugam) Presumptive | Individuals, HUFs, Firms (not LLP) | Presumptive income under Sec 44AD, 44ADA, 44AE; Salary; One house property | Total income > ₹50 lakh; Foreign assets; Director in company |
| ITR-5 | Firms, LLPs, AOPs, BOIs, Cooperative Societies, etc. | All types applicable to these entities | Individuals, HUFs, Companies |
| ITR-6 | Companies (other than Sec 11 exempt) | All income types for companies | Companies claiming Sec 11 exemption (trusts use ITR-7) |
| ITR-7 | Trusts, political parties, research institutions, Sec 11/12 entities | Income from property held for charitable/religious purposes | Not for regular companies or individuals |
Example: Which ITR form should Ramesh file?
Ramesh is a salaried employee earning ₹8.5 lakh/year from his employer. He also earns ₹30,000 interest from FDs. He owns one house property (self-occupied). His total income is ₹8.8 lakh.
- Income under ₹50 lakh ✓
- Only salary + interest + one house ✓
- No capital gains, foreign income ✓
- → Ramesh should file ITR-1 (Sahaj)
Old Regime vs New Tax Regime
Taxpayers can choose between the Old Tax Regime and the New Tax Regime (default from FY 2023–24 onwards). Here is a side-by-side comparison:
| Income Slab | New Regime Rate | Old Regime Rate |
|---|---|---|
| Up to ₹3,00,000 | Nil | Nil |
| ₹3,00,001 – ₹7,00,000 | 5% | 5% (₹2.5L–₹5L) |
| ₹7,00,001 – ₹10,00,000 | 10% | 20% (₹5L–₹10L) |
| ₹10,00,001 – ₹12,00,000 | 15% | 30% |
| ₹12,00,001 – ₹15,00,000 | 20% | 30% |
| Above ₹15,00,000 | 30% | 30% |
| Feature | New Regime | Old Regime |
|---|---|---|
| Default regime | ✅ Yes (from FY 2023-24) | ❌ Needs to be opted in |
| Standard Deduction (Salaried) | ✅ ₹75,000 | ✅ ₹50,000 |
| Section 80C (LIC, PPF, ELSS) | ❌ Not available | ✅ Up to ₹1.5 lakh |
| HRA Exemption | ❌ Not available | ✅ Available |
| Home Loan Interest (Self-Occ.) | ❌ Not deductible | ✅ Up to ₹2 lakh |
| NPS (80CCD) | ✅ Employer's NPS (14%) | ✅ Self (₹50K) + Employer |
| LTA Exemption | ❌ Not available | ✅ Available |
| Best for | Those with fewer deductions | Those with high deductions |
Quick Rule of Thumb
Choose Old Regime if your total deductions (80C + HRA + Home Loan etc.) exceed approximately:
- Income ₹7–₹10 lakh: Deductions should exceed ~₹2–₹2.5 lakh
- Income ₹10–₹15 lakh: Deductions should exceed ~₹3–₹3.75 lakh
- Income above ₹15 lakh: Deductions should exceed ~₹4.25 lakh
If your deductions are lower, New Regime typically results in lower taxes.
ITR Due Dates for AY 2025–26
Missing the ITR due date results in late filing fees, interest, and loss of carry-forward benefits. Here are the key deadlines:
2025
Individuals & Non-Audit Cases
Salaried, freelancers, small businesses (no audit required)
2025
Audit Cases
Businesses & professionals requiring tax audit under Sec 44AB
2025
Transfer Pricing Cases
Businesses with international transactions requiring TP report
2025
Belated / Revised Return
Last date to file belated or revised ITR for AY 2025–26
Documents Required to File ITR
- PAN Card
- Aadhaar Card (linked to PAN)
- Form 16 / Form 16A (from employer / banks / deductors)
- Form 26AS and AIS / TIS (Annual Information Statement)
- Bank account statements for all accounts
- Interest certificates from banks/post office for FDs, savings accounts
- Home loan certificate (if applicable — for principal & interest breakup)
- HRA details — rent receipts, landlord PAN (if rent > ₹1 lakh/year)
- Investment proofs for 80C, 80D (LIC, PPF, ELSS, health insurance)
- Any other income proof (freelancing, rental income, etc.)
- PAN, Aadhaar, GST registration number (if applicable)
- Balance Sheet and Profit & Loss Account
- Books of accounts (if not opting for presumptive taxation)
- Bank statements for all business accounts
- Tax Audit Report (Form 3CB/3CD) if applicable
- TDS certificates — Form 16A from clients
- Form 26AS and AIS
- Details of depreciation claimed on assets
- GST returns filed (GSTR-1, GSTR-3B) for reconciliation
- Advance tax challan copies (if paid)
- Demat account capital gains statement from broker (CDSL/NSDL)
- Mutual fund capital gains statement (consolidated from AMC or CAMS/KFintech)
- Sale deed and purchase deed for immovable property transactions
- Indexed cost of acquisition for property (for LTCG)
- Details of ELSS redemption or NPS partial withdrawal
- Any tax-saving investment done against LTCG (Sec 54, 54F, 54EC bonds)
- Form 26AS to cross-check TDS on property sale (Sec 194-IA)
Step-by-Step ITR Filing Process (Online)
Here is a complete walkthrough of filing your ITR on the official Income Tax e-Filing Portal (incometax.gov.in):
-
1
Register / Login on the IT Portal
Visit incometax.gov.in. Login using your PAN as user ID. First-time users must register. Ensure your mobile number and email are updated for OTP verification.
-
2
Download & Review Form 26AS and AIS
Before filling your ITR, download Form 26AS (tax credit statement) and AIS (Annual Information Statement) from the portal. Cross-check TDS deducted, advance tax paid, interest income, and all reported transactions. Flag any discrepancies.
-
3
Select the Correct ITR Form
Based on your income sources (refer to the ITR Forms table above), choose the appropriate form — ITR-1 for simple salaried cases, ITR-2 for capital gains, ITR-3/4 for business income, etc.
-
4
Choose Tax Regime (Old vs New)
Decide whether to opt for the Old Regime or stick with the default New Regime. Calculate your tax liability under both before making the selection. This choice must be made before filing.
-
5
Fill in Income Details
Enter income from all sources — salary, house property (rental income or self-occupied), capital gains, business income, other sources (interest, dividends, etc.). The portal often pre-fills data from Form 26AS and AIS — verify and correct if needed.
-
6
Claim Deductions (Old Regime)
If opting for Old Regime, enter deductions under Chapter VI-A: 80C (LIC, PPF, ELSS), 80D (health insurance), 80TTA (savings interest), HRA, home loan interest (Sec 24), etc.
-
7
Compute Tax Liability & Pay Tax Due
Review the computed tax. If there is any remaining tax liability (after TDS, advance tax), pay it as Self-Assessment Tax using Challan 280 via the IT portal. Enter the BSR code and challan details in the return.
-
8
Submit the Return
Preview the completed ITR, verify all entries, and click Submit. Upon submission, an acknowledgement number is generated.
-
9
e-Verify Your Return
Your ITR is not complete until it is e-verified. E-verify within 30 days of filing using: Aadhaar OTP, Net Banking, Demat account EVC, Bank ATM EVC, or DSC. If not e-verified, the return is treated as invalid.
-
10
Receive ITR-V / Acknowledgement
After e-verification, you will receive ITR-V (acknowledgement) in your registered email. Save this document — it is your official proof of filing. Refunds (if any) will be credited to your pre-validated bank account.
Penalties for Late or Non-Filing
Missing ITR deadlines has financial and legal consequences. Here is what you should know:
| Default / Violation | Applicable Section | Penalty / Consequence |
|---|---|---|
| Late filing fee (income > ₹5 lakh) | Sec 234F | ₹5,000 |
| Late filing fee (income ≤ ₹5 lakh) | Sec 234F | ₹1,000 |
| Interest on unpaid tax | Sec 234A | 1% per month from due date |
| Interest on short advance tax | Sec 234B / 234C | 1% per month |
| Failure to carry forward losses | Sec 80 r.w.s. 139(3) | Capital/business losses CANNOT be carried forward |
| Concealment of income | Sec 271(1)(c) | 100%–300% of tax sought to be evaded |
| Wilful failure to furnish return | Sec 276CC | Imprisonment 3 months – 7 years + fine |
| Under-reporting of income | Sec 270A | 50% of tax on under-reported income |
Practical Examples
Priya – Software Engineer, Salary ₹12 Lakh/Year
Income Details:
- Basic + HRA + Allowances = ₹12,00,000
- FD Interest = ₹18,000
- Savings Account Interest = ₹4,200
Under New Regime:
- Gross Income = ₹12,22,200
- Standard Deduction = ₹75,000
- Taxable Income = ₹11,47,200
- Tax Payable ≈ ₹95,440 (incl. cess)
Under Old Regime (with deductions):
- 80C (ELSS + PPF) = ₹1,50,000; 80D = ₹25,000; HRA = ₹1,20,000; Std Deduction = ₹50,000
- Taxable Income ≈ ₹8,77,200; Tax ≈ ₹88,216
- → Old Regime saves ~₹7,224 for Priya. She should opt for Old Regime.
Rajan – Kirana Store Owner, Turnover ₹45 Lakh
Situation: Rajan has a retail grocery shop with ₹45 lakh turnover. He wants to take the easy route.
- Turnover is below ₹3 crore (digital receipts > 95%) → Eligible for Sec 44AD Presumptive Taxation
- Deemed profit = 6% of ₹45 lakh = ₹2,70,000 (digital) or 8% = ₹3,60,000 (cash)
- No books of accounts required under 44AD
- File ITR-4 (Sugam)
- Tax on ₹2,70,000 = NIL (below exemption limit under New Regime)
- → Rajan pays zero tax and doesn't need an accountant for complex books.
Kavya – Freelance Graphic Designer, Earning ₹8 Lakh
Situation: Kavya earns from multiple clients (Indian and foreign). TDS of ₹80,000 has been deducted.
- Professional income = ₹8,00,000
- Eligible for Sec 44ADA Presumptive Taxation (50% of gross = ₹4,00,000 deemed profit)
- Under New Regime: Taxable = ₹4,00,000 – ₹75,000 (Std Deduction) = ₹3,25,000 → NIL tax (below ₹3L slab)
- TDS of ₹80,000 → Full refund claimable!
- File ITR-4 (Sugam)
- → Kavya should definitely file ITR to claim ₹80,000 refund.
Frequently Asked Questions
Official Sources & Useful Links
Always refer to official government sources for the most accurate and up-to-date information on income tax rules and notifications:
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