A plain-language guide for salaried employees, freelancers, and SME owners — file your Income Tax Return for FY 2025-26 correctly, on time, without paying a rupee more than you owe.

Every July, millions of Indian taxpayers rush to file their Income Tax Return — and every July, thousands of them make the same preventable mistakes: wrong ITR form, AIS mismatches, missed deductions, forgotten interest income, and the single most costly error of all — not e-verifying within 30 days of submission.

For FY 2025-26 (AY 2026-27), there is an additional reason to pay attention. Budget 2026 introduced staggered filing deadlines for the first time, which means your deadline is no longer automatically July 31. Picking the wrong deadline for your income type can result in a late fee even if you file what you thought was on time.

This guide covers everything: who needs to file, which form applies to you, what documents to gather, the step-by-step filing process, and the eight most expensive mistakes to avoid this season.

Key ITR Deadlines for FY 2025-26 (AY 2026-27) at a Glance

This is the first year with staggered ITR deadlines. Your deadline depends on your income type and ITR form — not a single universal date.

Taxpayer Category	ITR Form	Deadline	Key Note
Salaried, pensioners, investors (no business income)	ITR-1 or ITR-2	31 July 2026	July deadline unchanged from previous years
Freelancers, professionals, small businesses (no audit required)	ITR-3 or ITR-4	31 August 2026	New extended deadline introduced in Budget 2026
Businesses & professionals requiring tax audit	ITR-3 or ITR-4	31 October 2026	Audit report (Form 3CA/3CB-3CD) due 30 September 2026
Transfer pricing cases	ITR-3 / ITR-6	30 November 2026	TP report due one month before ITR
Belated return (missed original deadline)/Revised Return	Any applicable form	31 December 2026	Late fee + interest on tax due applies for belated returns only
Revised return (correct errors after filing) on Payment of Additional Fee	Any applicable form	31 March 2027	Extended from December — Budget 2026 change                       Additional Late Fee with applicable interest

Who Needs to File an ITR for FY 2025-26?

You are required to file an ITR if any of the following apply to you:

• Income above the basic exemption limit: ₹4 lakh under the new tax regime, ₹2.5 lakh under the old regime (₹3 lakh for senior citizens aged 60–80, ₹5 lakh for those above 80)
• You have capital gains from shares, mutual funds, or property — even if below the exemption limit
• You want to claim a tax refund on TDS deducted by your employer or bank
• You have foreign income, foreign assets, or foreign bank accounts
• Your gross sales or professional receipts exceeded ₹60 lakh or ₹10 lakh respectively
• You have deposited more than ₹1 crore in a current account or ₹50 lakh in a savings account during the year
• You want to carry forward losses (capital, business, or speculation) to set off in future years

Which ITR Form Should You File?

Choosing the wrong ITR form makes your return defective. The Income Tax Department issues a notice under Section 139(9) giving you 15 days to rectify it — and if you miss that window, the return is treated as not filed, with full late fees and penalties.

Form	Who It’s For	Key Conditions
ITR-1 (Sahaj)	Salaried individuals, pensioners	Income up to ₹50 lakh. Only one or two house properties. No business income, no capital gains (other than LTCG on listed equity up to ₹1.25 lakh). No foreign income or assets.
ITR-2	Salaried + investors	Income above ₹50 lakh, or capital gains from shares/MFs/property, or more than two house properties, or foreign income/assets. No business income.
ITR-3	Business & professional income	Individuals and HUFs with income from business or profession. Also used for F&O trading. No turnover limit.
ITR-4 (Sugam)	Small businesses & professionals under presumptive scheme	Turnover up to ₹3 crore (business) or ₹75 lakh (professional). Must opt for presumptive taxation under Section 44AD or 44ADA. Income up to ₹50 lakh from other sources allowed.
ITR-5	Partnership Firm/ LLP	Any income from Business or Profession, including Nil Income or Loss
ITR-6	All Companies	All Limited or Private Limited Companies for all income including Nil Income or Loss
ITR-7	Trusts, Societies, Associations, Political Parties, NGOs	All Trusts, Societies, Associations whether registered or not, all Political Parties, NGOS etc mandatory filing for all incomes including Nil Incomes and losses

Documents to Gather Before You Start Filing

Having all documents ready before you log in to the portal saves time, prevents errors, and ensures you do not have to abandon a half-completed filing. Collect these before you start:

Identity & Basic Details

• PAN card and Aadhaar number (Aadhaar-PAN linking is mandatory)
• Bank account details with IFSC code for refund credit

Income Documents

• Form 16 / Form 16A: Issued by your employer (salary TDS) or deductors (non-salary TDS). Your employer must issue Form 16 by 15 June 2026.
• Form 26AS: Download from the Income Tax e-filing portal. This shows all TDS credited against your PAN, advance tax, and self-assessment tax paid.
• AIS (Annual Information Statement): Also on the e-filing portal. Broader than Form 26AS — includes savings interest, dividends, mutual fund transactions, property purchases, and more.
• Bank statements: For interest income on savings and FD accounts. Interest income is taxable but often forgotten.
• Capital gains statements: From your broker or depository participant for shares, mutual fund redemptions, or property sales.
• Rental income: Rent receipts and property tax paid if you own let-out property.

Deduction Proofs (if claiming under old tax regime)

• Section 80C: LIC premium receipts, PPF passbook, ELSS statements, home loan principal repayment certificate, school fee receipts
• Section 80D: Health insurance premium receipts
• Section 80G: Donation receipts with 80G certificate
• Home loan interest certificate from the bank (Section 24b)
• HRA: Rent receipts and landlord’s PAN (if annual rent exceeds ₹1 lakh)

Step-by-Step ITR Filing Process for FY 2025-26

Filing is done on the Income Tax e-filing portal at incometax.gov.in. Here is the complete process:

1. Log in and select the correct assessment year

Go to incometax.gov.in and log in with your PAN and password. Under ‘e-File’, select ‘Income Tax Returns’ → ‘File Income Tax Return’. Select Assessment Year 2026-27 (for income earned in FY 2025-26) and choose ‘Online’ mode.

2. Select your ITR form

Choose the correct ITR form based on your income type (see the form table above). The portal may suggest a form based on your per-filled data — verify it matches your actual income profile before proceeding.

3. Check and verify per-filled data

The portal pre-fills salary income from Form 16, TDS credits from Form 26AS, and additional income from AIS. Do not accept this data without verification. Cross-check every figure — salary, interest income, capital gains, TDS amounts — against your actual documents. Errors in per-filled data are your responsibility to correct before filing.

4. Reconcile AIS with Form 26AS

This is the step most people skip — and the one that causes most post-filing notices. Download both AIS and Form 26AS and compare:

• TDS credits: Must match between Form 26AS and your Form 16/16A. If TDS is missing from Form 26AS, your employer or bank has not deposited it yet — follow up before claiming the credit.
• Interest income: AIS may show FD interest your bank has reported. Ensure it is included in your return.
• Capital gains: AIS shows gross sale value of shares and mutual funds — not taxable profit. Do not use AIS figures directly as income. Calculate actual gains from your broker’s capital gains statement.
• unrecognized entries: If you see income or transactions in AIS that do not belong to you, use the AIS feedback facility on the portal to flag them before filing.

5. Choose your tax regime

This is a financial decision, not just a compliance one. For FY 2025-26:

• New Tax Regime (default): Lower slab rates, basic exemption of ₹4 lakh, Section 87A rebate making income up to ₹12 lakh effectively tax-free. No deductions under 80C, 80D, HRA, etc.
• Old Tax Regime: Higher rates but full deductions available — 80C, 80D, HRA, home loan interest, etc. Beneficial if your actual deductions are significant (typically above ₹3–4 lakh in legitimate claims).
• Critical: If you miss the filing deadline, you lose the option to choose the old tax regime. The new regime becomes default for belated returns. This alone is a strong reason to file on time.

6. Claim all eligible deductions

If you are filing under the old regime, ensure you have claimed every deduction you are entitled to:

• Section 80C: Up to ₹1.5 lakh (LIC, PPF, ELSS, home loan principal, tuition fees)
• Section 80D: Up to ₹25,000 for self/family health insurance; ₹50,000 for senior citizen parents
• Section 24b: Home loan interest up to ₹2 lakh for self-occupied property
• Section 80G: Donations to eligible charitable institutions
• HRA exemption: If you pay rent and receive HRA from your employer
• Section 80TTA / 80TTB: Savings account interest (₹10,000 for general; ₹50,000 for senior citizens)

7. Pay any balance tax due

After computing tax, if there is a balance payable (self-assessment tax), pay it online using Challan 280 on the Income Tax portal before submitting the return. Note the Challan Serial Number — you will need it during filing. Submitting an ITR with outstanding tax due without payment leads to a demand notice.

8. Submit and e-verify within 30 days

Submit the return and then e-verify it. Without e-verification, the return is treated as not filed — even if you received an acknowledgement number.

E-verification options: 

• Aadhaar OTP (fastest — instant verification)
• Net banking login
• Demat account login
• Bank account EVC (Electronic Verification Code)
• Physical signature on ITR-V sent to CPC Bengaluru (within 30 days — slowest option)

Deadline: E-verify within 30 days of submission. Missing this window means the ITR has no legal standing.

8 Common ITR Filing Mistakes That Trigger Notices or Cost You Money

These are not hypothetical errors — they are the mistakes CPC Services corrects every filing season for SME clients who come to us after filing on their own.

1. Filing the wrong ITR form

Using ITR-1 when you have F&O income (must be ITR-3), or ITR-2 when you have any business income, makes the return defective under Section 139(9). You get 15 days to fix it. Miss that and the return is treated as not filed — with full penalties. Always verify your form choice against your actual income sources before logging in.

2. Not reconciling AIS with Form 26AS before filing

AIS and Form 26AS are different documents and may show different amounts. TDS credits are validated against Form 26AS during CPC processing — not AIS. If your ITR claims TDS that appears only in AIS and not in Form 26AS, your refund will be adjusted down or a notice will follow. Always reconcile both documents before filing, using the latest versions.

3. Forgetting to report interest income

Savings account interest, fixed deposit interest, recurring deposit interest, and post office interest are all taxable and must be reported. AIS captures most of this automatically from bank reporting — but many taxpayers do not cross-check. If your ITR shows no interest income but AIS shows ₹40,000 in FD interest, expect a mismatch notice.

4. Choosing the wrong tax regime — or not choosing at all

The new tax regime is the default from FY 2024-25 onwards. If you intend to claim deductions under the old regime, you must explicitly select it before filing. Salaried employees who submitted a declaration to their employer but forget to select the old regime in the portal end up in the default new regime — losing all deduction benefits. Run the comparison before filing, not after.

5. Reporting capital gains incorrectly

AIS shows the gross sale value of shares and mutual funds — not the taxable gain. Many taxpayers mistakenly enter the gross sale value as income instead of computing the actual capital gain (sale price minus cost of acquisition minus indexed cost where applicable). This results in significantly overstated income and excess tax. For property sales, indexation benefits and Section 54 exemptions must be correctly applied.

6. Missing the e-verification deadline

This is the most avoidable mistake. Filing the return and receiving an acknowledgement number is not enough. Without e-verification within 30 days of submission, the return has no legal validity — it is treated as not filed. The e-verification step takes two minutes via Aadhaar OTP. Do it immediately after submission, not later.

7. Not reporting all income sources

The Income Tax Department now receives data from banks, mutual fund registrars, stock exchanges, property registrars, and credit card companies. Rental income managed by a family member, freelance income received in a different account, dividend income from older investments — all of it appears in AIS. If it is in AIS and not in your ITR, you will receive a notice. Report all income, even if no TDS was deducted.

8. Filing a belated return and losing old regime option

If you miss your deadline (31 July for ITR-1/ITR-2, 31 August for ITR-3/ITR-4), you lose the right to choose the old tax regime for that year. For anyone with significant 80C, 80D, or home loan deductions, this can mean paying considerably more tax. For a taxpayer with ₹2 lakh in deductions and ₹15 lakh income, the difference between regimes can be ₹50,000–₹75,000. File on time.

What Happens If You Miss the ITR Filing Deadline

Missing the 31 July deadline (for ITR-1 and ITR-2) or 31 August deadline (for ITR-3 and ITR-4) does not mean you cannot file — but it does have consequences:

Consequence	Detail
Late fee under Section 234F	₹1,000 if total income does not exceed ₹5 lakh. ₹5,000 in all other cases. This fee is fixed and mandatory — even if no tax is due.
Interest under Section 234A	1% per month on outstanding tax from the due date to the date of filing. This compounds monthly — a month that starts on the 1st of the month is counted as a full month even if you file on the 3rd.
Loss of old tax regime option	Belated returns are processed under the new tax regime by default. You cannot switch to the old regime after the deadline.
Loss of carry-forward of losses	Business losses and capital losses can only be carried forward to future years if the return is filed within the original deadline. A belated return forfeits this right permanently for that year.
Delayed refunds	Belated returns are processed later in the queue. If you are owed a refund, expect a longer wait.
Belated return window	You can still file until 31 March 2027, with the additional late fee and interest. After March 31, only an Updated Return (ITR-U) is possible — with an additional tax of 25%–75% on the incremental ta depending upon the period for which updation is required.

When to File Yourself vs When to Involve a Professional

For most salaried individuals with a simple income profile — one employer, one or two bank accounts, standard 80C investments — self-filing on the portal is straightforward if you reconcile your AIS carefully.

Consider professional assistance if any of these apply to your situation:

• You have capital gains from multiple sources — equity, mutual funds, property, ESOP
• You have business or freelance income alongside salary
• You received ESOPs, RSUs, or equity-based compensation
• You have income from multiple employers in the same year
• You own property that was let out for part of the year
• You are an NRI or have foreign income, foreign bank accounts, or overseas investments
• You have received a scrutiny notice or demand notice in a previous year
• You have a high value of transactions appearing in AIS that you cannot easily reconcile
• You are a director in a company or a partner in a firm

Does CPC Services file ITRs for individuals and business owners?

Yes. CPC Services handles ITR filing for salaried individuals, freelancers, business owners, directors, HUFs, and firms across Faridabad and Delhi NCR — including AIS reconciliation, regime comparison, capital gains computation, and advance tax planning. We also handle cases with prior notices, demands, or complex income profiles.

→ Talk to CPC Services | Explore Direct Tax Services

Related Reading

→ July 2026 GST & TDS Due Dates: Don’t Miss These Compliance Deadlines

→ 10 Signs Your Growing Business Needs a Virtual CFO Right Now

→ Startup Budgeting 2026: How Founders Can Plan Smart for Growth

File Right. File on Time. File Once.

CPC Services handles ITR filing for individuals, business owners, and directors across Faridabad and Delhi NCR — with AIS reconciliation, regime comparison, and zero errors. Since 1987.

📋  Direct Tax Services     |     🔗  Compliance Desk     |     💬  Talk to an Expert