Start by checking whether you need to file
Online ITR filing begins before you open the portal, because you first need to know whether filing is required for you and which income details must be reported. In India, Income Tax Return filing may be required based on income level, type of income, tax deducted at source, foreign assets, capital gains, business income, or other conditions notified by the Income Tax Department. Even when filing is not strictly mandatory, many taxpayers file voluntarily to claim refunds, maintain income records, or support future financial documentation.
The return you file in a financial year is for income earned in the previous financial year, and the portal asks you to select the correct assessment year. For example, income earned from 1 April 2024 to 31 March 2025 is generally reported in Assessment Year 2025-26. Always check the assessment year carefully on the e-Filing portal, because choosing the wrong year can lead to an incorrect return and may require correction later.
Keep your documents ready before logging in
Before filing your ITR online, collect the documents and details that help you verify the information already available on the portal. Common documents include PAN, Aadhaar, bank account details, salary slips, Form 16, Form 16A, interest certificates, home loan certificates, capital gains statements, rent receipts where applicable, and proof of deductions. You should also keep details of advance tax, self-assessment tax, and tax deducted at source available for cross-checking.
Download and review your Annual Information Statement, Taxpayer Information Summary, and Form 26AS from the Income Tax e-Filing portal. These documents show information reported to the tax department by employers, banks, mutual funds, brokers, and other reporting entities. If there is a mismatch between your records and the portal data, resolve it before filing or report the correct details with proper supporting records.
Log in to the Income Tax e-Filing portal
Go to the official Income Tax e-Filing portal and select the login option. Existing users can log in using their PAN or Aadhaar as the user ID, followed by the password and the required verification steps shown on the screen. If you are a first-time user, complete the registration process using your PAN, Aadhaar-linked mobile number, email address, and other required details before proceeding to file the return.
After logging in, check your profile information, especially your name, date of birth, contact details, address, Aadhaar linking status, and bank account validation status. A validated bank account is important if you are expecting a refund, because the refund is generally issued only to an eligible pre-validated bank account. If any profile detail is incorrect or incomplete, update it before starting the ITR filing process.
Open the file income tax return section
On the dashboard, go to e-File > Income Tax Returns > File Income Tax Return. The portal will ask you to select the assessment year, the mode of filing, and the type of taxpayer. Choose the assessment year that matches the financial year for which you are filing, select online mode if you want to complete the return directly on the portal, and continue to the next screen.
If you had already started a return earlier, the portal may show an option to resume filing. You can continue from the saved draft if the information is still correct, or you can discard it and start a new filing if you want to prepare the return again. Read each screen carefully, because the portal flow may vary slightly depending on your taxpayer category and the ITR form selected.
Select the correct ITR form
Choosing the correct ITR form is one of the most important steps in online filing. The form depends on your residential status, sources of income, total income, capital gains, business or professional income, foreign assets, agricultural income, and other conditions. The portal may help you choose a form by asking questions, but the responsibility for selecting the correct form remains with the taxpayer.
ITR-1 is commonly used by eligible resident individuals with simple income such as salary, one house property, other sources, and income within the prescribed limit, subject to the conditions listed by the department. ITR-2 is generally used when an individual or Hindu Undivided Family does not have income from business or profession but has items such as capital gains or more complex income. ITR-3 and ITR-4 apply in cases involving business or professional income, depending on eligibility and the presumptive taxation rules, so consult a financial advisor if you are unsure which form applies to you.
Review personal information and filing details
Once the form opens, verify your personal information on the return. Check your name, PAN, Aadhaar number, date of birth, address, mobile number, email ID, employer category, filing section, and return type. Many fields are prefilled from your profile, but you should not assume that every prefilled field is correct.
Select the correct filing section based on whether you are filing before the due date, filing a belated return, filing a revised return, or responding to a notice. The return type and filing section affect how the return is processed, so avoid guessing if you are filing after the original due date or correcting a previously filed return. If you are filing a revised return, keep the acknowledgment number and filing date of the original return ready.
Check income details carefully
The online ITR form usually includes prefilled income details from salary, interest, dividends, securities transactions, tax statements, and other reported sources. Compare these details with Form 16, bank certificates, broker statements, rent records, and your own books or records. If a prefilled figure is incomplete or incorrect, update the return using accurate information supported by documents.
Salary taxpayers should verify gross salary, exempt allowances, standard deduction where applicable, professional tax, and taxable salary. Those with house property income should correctly enter rent received, municipal taxes paid, interest on housing loan, and whether the property is self-occupied, let out, or deemed let out. Taxpayers with capital gains, business income, foreign income, or special income should be extra careful because these schedules often require more detailed reporting.
Enter deductions and exemptions accurately
The deductions section allows you to claim eligible deductions under the applicable tax regime and subject to the rules in force for that assessment year. Do not enter a deduction only because you made a payment, because eligibility may depend on the regime selected, the type of payment, the limit, and the documentation available. Keep proof of deductions safely even if the portal does not ask you to upload documents while filing.
If you are comparing the old and new tax regimes, review the impact on deductions, exemptions, and final tax payable before submitting the return. The better option depends on your income structure, eligible deductions, employer declarations, and applicable law for that year. If the choice is not clear, consult a financial advisor rather than relying on generic assumptions or social media advice.
Verify taxes paid and tax credit
After entering income and deductions, check the tax paid section of the return. This includes tax deducted at source, tax collected at source, advance tax, and self-assessment tax. The figures should broadly match Form 26AS, the Annual Information Statement, and your tax payment challans.
If the return shows tax payable, you usually need to pay it before final submission. The portal may redirect you to the e-Pay Tax service for payment, and after successful payment you should return to the filing flow to complete the return. Enter or confirm the challan details if required, and make sure the final tax payable is cleared before submission to avoid processing issues.
Preview and validate the return
Before submitting, use the preview option to review the complete return. Check income, deductions, tax paid, refund amount, tax payable, bank account details, address, and all schedules that apply to you. This is your last practical opportunity to catch errors before the return is filed.
The portal also validates the return and flags missing or inconsistent information. Some validation messages are errors that must be fixed before submission, while others may be warnings that require careful review. Do not ignore warnings automatically, because they may point to mismatches or incomplete disclosures that can affect processing later.
Submit and e-verify your ITR
After you preview and validate the return, submit it on the portal. Filing is not fully complete until the return is verified, and e-verification is the fastest method for most taxpayers. The portal provides options such as Aadhaar OTP, net banking, electronic verification code through bank account or demat account, and other methods available at the time of filing.
If you cannot e-verify immediately, complete verification within the permitted timeline shown by the Income Tax Department. A return that is submitted but not verified may be treated as invalid, which can delay refunds and create compliance problems. After successful verification, download the acknowledgment and keep it with your tax records.
Track processing and refund status
Once the ITR is filed and verified, the Income Tax Department processes it. You can track the status by logging in to the e-Filing portal and checking the filed returns section. The status may show that the return is successfully verified, under processing, processed, defective, or pending for further action.
If a refund is due, it is usually credited to the pre-validated bank account selected in the return, subject to successful processing and any adjustments allowed under law. If the department issues an intimation, notice, or defect communication, read it carefully and respond within the prescribed time. Do not ignore portal messages, emails, or SMS alerts related to your return, because delayed action can create avoidable complications.
Correct common mistakes before submission
Many filing errors happen because taxpayers rely only on prefilled information and do not compare it with their own records. Common mistakes include selecting the wrong assessment year, choosing the wrong ITR form, missing interest income, not reporting all bank accounts, claiming ineligible deductions, and entering incorrect tax challan details. These issues can lead to mismatch notices, delayed refunds, or the need to file a revised return.
Another common mistake is forgetting to e-verify the return after submission. Some taxpayers also fail to report small income items such as savings account interest, fixed deposit interest, dividend income, or income from more than one employer. The safest approach is to review the full return slowly, compare it with AIS, TIS, Form 26AS, and your documents, and submit only when the figures are consistent.
Know when to revise or seek help
If you discover a mistake after filing, you may be able to file a revised return within the time allowed under the Income Tax Act. A revised return is useful when income was missed, deductions were wrongly claimed, tax credit was incorrect, or personal details needed correction. Keep the acknowledgment of the original return available because the revised filing may require reference to it.
Some cases need professional review rather than self-filing. These include capital gains with multiple transactions, foreign assets, foreign income, crypto or virtual digital asset reporting, business income, professional receipts, presumptive taxation, losses to be carried forward, and notices from the department. If your situation is complex or the tax impact is significant, consult a financial advisor or tax professional before filing or revising your return.
Frequently asked questions
What is the official website for filing ITR online? The official filing platform is the Income Tax e-Filing portal of the Government of India. You should use the official portal and avoid entering your PAN, Aadhaar, password, or OTP on unverified websites.
Can I file ITR online without Form 16? Yes, it may be possible to file without Form 16 if you have salary slips, Form 26AS, AIS, TIS, bank statements, and other reliable income records. However, Form 16 is useful because it summarizes salary income, exemptions, deductions declared to the employer, and TDS. If Form 16 is unavailable or incorrect, verify the figures carefully before filing.
Which ITR form should a salaried person use? Many eligible salaried resident individuals with simple income use ITR-1, but it is not suitable for every salaried taxpayer. If you have capital gains, foreign assets, income from business or profession, more complex house property details, or other disqualifying conditions, another form may be required. Check the portal instructions and consult a financial advisor if you are unsure.
Is e-verification compulsory after filing ITR? Verification is required for the return to be treated as valid. E-verification through Aadhaar OTP, net banking, or other available electronic methods is usually quicker than physical verification. If you submit the return but do not verify it within the allowed time, the filing may not be completed properly.
What should I do if I made a mistake after submitting my ITR? If the law permits and the time limit has not expired, you can file a revised return to correct the mistake. Review the original acknowledgment, identify the incorrect schedules, and prepare the revised return with accurate details. If the mistake involves significant income, tax liability, losses, or a notice from the department, take professional help before making changes.