How to File ITR Online: Complete Step-by-Step Guide for Salaried Employees & Everyone Else

Filing your Income Tax Return (ITR) isn't just a legal formality — it's proof of income for loans, visas and credit cards, it's how you claim back excess TDS, and it's the only way to carry forward capital losses to future years. This guide walks through every step, whether you're a salaried employee with a single Form 16 or a freelancer, business owner, NRI, or retiree filing on your own for the first time.

Who needs to file an ITR?

Filing is mandatory if any of these apply to you for the financial year:

• Your total income before deductions exceeds the basic exemption limit (₹2.5 lakh under the old regime, ₹3 lakh / ₹4 lakh under the new regime depending on the year's slabs)
• You have deposited more than ₹1 crore in a current account, or ₹50 lakh in savings accounts
• You've spent more than ₹2 lakh on foreign travel or more than ₹1 lakh on electricity bills in the year
• You hold assets or signing authority for accounts outside India (even if income is below the exemption limit)
• You want to carry forward a capital loss or business loss to set off against future gains
• You're claiming a TDS refund — even if your income is below the taxable limit

Even when it's not mandatory, filing a "nil return" is a good habit — many banks and embassies ask for the last 2-3 years of ITRs for loan and visa processing.

Which ITR form applies to you

Form	Who should use it
ITR-1 (Sahaj)	Salaried individuals with income up to ₹50 lakh from salary, one house property, and other sources (interest, dividends) — no capital gains, no foreign assets
ITR-2	Individuals with capital gains (stocks, mutual funds, property), more than one house property, or foreign income/assets, but no business income
ITR-3	Individuals with income from business or profession (including F&O trading, intraday trading, freelancing without presumptive scheme)
ITR-4 (Sugam)	Small business owners and professionals opting for presumptive taxation under Sections 44AD, 44ADA or 44AE, with total income up to ₹50 lakh

Picking the wrong form is one of the most common reasons returns get marked defective — when in doubt, the portal's pre-fill and "help me choose" prompts on incometax.gov.in will guide you, but the table above covers 95% of cases.

Documents to keep ready

For salaried employees

• Form 16 (Part A and Part B) from your employer — or multiple Form 16s if you switched jobs during the year
• Form 26AS and the Annual Information Statement (AIS) / Taxpayer Information Summary (TIS), downloaded from the income tax portal
• Bank account statements and interest certificates (savings + fixed deposits)
• Rent receipts and landlord PAN (if claiming HRA and rent exceeds ₹1 lakh/year)
• Home loan interest certificate from your bank (for Section 24(b) deduction)
• Investment proofs — LIC, PPF, ELSS, NSC, tuition fees (Section 80C); health insurance premium receipts (Section 80D)
• Capital gains statements from your broker/mutual fund platform, if you sold stocks, mutual funds or property

For freelancers, professionals and business owners

• Profit & loss account and balance sheet (or a simple income-expense summary if under presumptive taxation)
• Bank statements for all business accounts
• GST returns, if registered
• Details of advance tax paid during the year (challans)
• Depreciation schedule for business assets, if applicable

Old regime vs new regime — which should you pick?

Since FY 2023-24, the new tax regime is the default. You can still opt for the old regime every year while filing (salaried individuals can switch each year; business owners get one-time flexibility to switch back). Under the current new-regime slabs, income up to ₹12 lakh is effectively tax-free after the Section 87A rebate (₹12.75 lakh for salaried taxpayers after the standard deduction), which makes the new regime attractive for most people who don't have large deductions to claim.

Factor	Old regime	New regime
Standard deduction (salaried)	₹50,000	₹75,000
80C, 80D, HRA, home loan interest	Fully available	Not available (except NPS employer contribution)
Best suited for	Those with home loans, high 80C/80D investments, HRA claims	Those with few deductions, or income comfortably under ₹12-13 lakh

Rule of thumb: if your total eligible deductions (80C + 80D + HRA + home loan interest) cross roughly ₹3.5-4 lakh a year, the old regime usually works out cheaper. Use an income tax calculator to compare both regimes with your actual numbers before deciding — don't guess.

Step-by-step: how to file your ITR online

Step 1 — Log in to the income tax portal

Go to incometax.gov.in and log in using your PAN as the user ID. First-time users need to register with PAN, Aadhaar-linked mobile number, and email. Make sure your PAN and Aadhaar are linked — an unlinked PAN can block e-verification later.

Step 2 — Check your pre-filled data

Download and review your Form 26AS and AIS/TIS from the portal (under "Services"). These show all TDS deducted, high-value transactions, dividend and interest income reported by banks, and mutual fund/stock transactions reported by brokers. Cross-check every entry against your own records — this is the single most important step to avoid a tax notice later.

Step 3 — Start a new return and select the assessment year

Click "File Now" under "e-File → Income Tax Returns → File Income Tax Return." Select the correct Assessment Year (for income earned between April and March, the AY is the following year — e.g., income earned in FY 2025-26 is filed under AY 2026-27), choose "Online" mode, and pick the ITR form from the table above.

Step 4 — Choose your tax regime

The portal will ask you to confirm old or new regime. If you want the old regime and are salaried, you must select it explicitly every year before the due date — it doesn't carry over automatically.

Step 5 — Fill in personal and income details

Most fields (salary breakup, TDS, bank interest) will be pre-filled from Form 16 and AIS. Verify each figure — gross salary, exemptions like HRA and LTA, and perquisites — against your actual Form 16 Part B. Correct any mismatches manually.

Step 6 — Claim your deductions

If you're on the old regime, fill in Chapter VI-A deductions: Section 80C (up to ₹1.5 lakh — PPF, ELSS, life insurance, principal repayment of home loan), Section 80D (health insurance premiums), Section 80CCD(1B) (additional ₹50,000 for NPS), Section 24(b) (up to ₹2 lakh home loan interest on self-occupied property), and 80G (donations).

Step 7 — Report all other income

Add income from house property (rent received, minus municipal taxes and 30% standard deduction), capital gains (short-term and long-term, from the broker's statement), and any other income (interest, family pension, gifts above ₹50,000 from non-relatives). This is where salaried filers most often under-report — casual stock market gains and savings account interest above ₹10,000 are frequently missed.

Step 8 — Check the tax computation and pay any balance

The portal auto-computes tax payable or refund due after adjusting TDS already deducted. If tax is still payable, pay it as self-assessment tax via Challan 280 on the e-filing portal before submitting the return — an unpaid balance will make your return defective.

Step 9 — Preview, validate and submit

Review the full return summary, fix any validation errors the portal flags, and submit. You'll get an acknowledgement number instantly.

Step 10 — E-verify within 30 days

Your return is not considered filed until it's verified. The fastest way is e-verification via Aadhaar OTP, net banking, or a bank/demat account-based EVC — all instant. If you can't e-verify online, you can post a signed physical ITR-V to CPC Bengaluru within 30 days, though electronic verification is strongly recommended since it's instant and free.

Notes specific to salaried employees

• If you changed jobs during the year, combine income and TDS from all Form 16s issued by each employer — don't file based on just the latest one.
• HRA exemption is the minimum of: actual HRA received, rent paid minus 10% of salary, or 50%/40% of salary (metro/non-metro) — the portal calculates this automatically if you enter rent paid and city correctly.
• If your employer under-deducted TDS because you didn't submit investment proofs on time, you may owe additional tax at filing — check this before the due date to avoid interest under Section 234B/234C.

Notes specific to freelancers, professionals and business owners

• Under presumptive taxation (Section 44ADA), professionals (doctors, consultants, freelancers) can declare 50% of gross receipts as taxable income (up to ₹75 lakh turnover) without maintaining detailed books.
• Under Section 44AD, small traders/businesses can declare 6-8% of turnover as profit (up to ₹3 crore turnover for mostly digital receipts) without a full audit.
• If your tax liability for the year exceeds ₹10,000, you're required to pay advance tax in quarterly instalments (June, September, December, March) — missing this attracts interest even if you pay the full amount at filing.
• Businesses/professionals exceeding the presumptive scheme's turnover limits, or opting out of it, need a tax audit under Section 44AB and must file ITR-3 with audited accounts.

Notes for senior citizens, pensioners and NRIs

• Senior citizens (60+) get a higher basic exemption limit under the old regime (₹3 lakh; ₹5 lakh for super seniors aged 80+) and can claim a higher 80D limit (₹50,000) for health insurance/medical expenses.
• Pensioners can claim the same standard deduction as salaried employees on pension income.
• Senior citizens with only pension and interest income, and no business income, are exempt from advance tax.
• NRIs must use ITR-2 or ITR-3 (never ITR-1/ITR-4), report global assets if "Resident and Ordinarily Resident," and can claim relief on foreign taxes paid under DTAA where applicable.

Common mistakes to avoid

• Not reconciling income with AIS/26AS before filing — mismatches are the top trigger for tax notices
• Forgetting to report interest from savings accounts, FDs, or small side-income like YouTube/freelance payments
• Choosing the wrong ITR form for capital gains or F&O trading income
• Skipping e-verification — an unverified return is treated as not filed at all
• Claiming HRA without actual rent payment or a valid landlord PAN when rent exceeds ₹1 lakh/year
• Missing quarterly advance tax if you have significant freelance, capital gains, or rental income

Due dates and penalties

Category	Typical due date
Individuals, salaried (no audit required)	31 July of the assessment year
Businesses requiring audit	31 October of the assessment year
Belated return (with late fee)	31 December of the assessment year

Filing after the due date attracts a late fee under Section 234F (₹1,000 if total income is under ₹5 lakh, ₹5,000 otherwise), plus interest under Sections 234A/B/C on any unpaid tax. Deadlines are occasionally extended by CBDT notification — always confirm the current year's date on incometax.gov.in before assuming an extension applies.

After you file: refunds, revisions and rectifications

• Refund tracking — refunds are usually credited within 4-6 weeks of e-verification, directly to your pre-validated bank account. Track status under "e-File → Income Tax Returns → View Filed Returns."
• Revised return — if you spot an error after filing, you can file a revised return under Section 139(5) any time before 31 December of the assessment year (or before assessment, whichever is earlier) — as many times as needed.
• Rectification (Section 154) — for correcting a mistake in the department's processing (not your own data error), file an online rectification request instead of a revised return.

Frequently asked questions

Do I need a CA to file my ITR?

No — ITR-1 and ITR-4 for straightforward salary/presumptive income can be self-filed on the portal in under 30 minutes using pre-filled data. A CA becomes genuinely useful if you have business accounts requiring audit, complex capital gains, foreign income, or a notice to respond to.

What happens if I don't file at all?

Besides the late fee and interest, you lose the ability to carry forward capital/business losses, and repeated non-filing above the taxable threshold can attract prosecution under Section 276CC in serious cases, though this is rare for genuine small taxpayers.

Can I switch between old and new regime every year?

Salaried individuals (with no business income) can choose either regime every single year at the time of filing. Individuals with business/professional income can switch back to the old regime only once in their lifetime after opting for the new regime.

Is a nil return (income below exemption limit) worth filing?

Yes — it establishes an income record for visa applications, loan approvals, and credit cards, and lets you claim a refund if any TDS was deducted (e.g., on FD interest) despite your income being below the taxable limit.