What Is an Income Tax Return (ITR)?
An income tax return is the form you file each year to tell the government what you earned, what tax you've paid, and whether anything is still due — or owed back to you. Here's everything that means, in plain language.
Get your ITR filed by a CAAn Income Tax Return (ITR) is a form filed with the Income Tax Department that declares your income, deductions and taxes paid for a financial year, and works out whether you owe more tax or are due a refund. Most people file it once a year, online, on the e-filing portal.
Financial year vs assessment year
You earn in one year and file the next. The year you earn is the financial year; the year you report and it's assessed is the assessment year.
1 April 2025 to 31 March 2026 — the year you actually earn the income.
The next year — when you file the return for that income and it's assessed.
So the return you file in 2026 for what you earned in FY 2025-26 is your AY 2026-27 return.
The new ‘Tax Year’ concept
From the Income-tax Act, 2025, the confusing pair of “previous year” and “assessment year” is replaced by a single term — the Tax Year. You earn and file for the same year, with no second label to match.
Two labels: you earn in the financial year and file in the next assessment year.
One label: you earn and file for the same Tax Year — a 12-month April-to-March period.
Does this change your filing now? No. Income earned up to 31 March 2026 is still filed for AY 2026-27 under the Income-tax Act, 1961 — the FY-and-AY system above still applies this season. The Tax Year takes over from 1 April 2026, the first being Tax Year 2026-27.
Why file an income tax return?
It may be the law
If your income is above the basic exemption — or you cross certain triggers — filing is mandatory.
Claim your refund
Paid more via TDS or advance tax than you owe? You only get it back by filing a return.
Carry forward losses
Business, trading or capital losses can be carried forward to save tax later — only if you file on time.
Proof of income
Banks and embassies ask for ITRs for loans, credit cards and visas. It's your financial track record.
Avoid penalty & notices
Late or missed filing brings a fee, interest, and a higher chance of a notice.
Big transactions on record
Filing keeps you clean when high-value spends and investments show up in your AIS.
Some of these apply even if your income is below the limit — see who should file an ITR and what happens if you file late.
What's inside an ITR?
Every return, however simple or complex, walks through the same five things.
Your income
From salary, business, house property, capital gains, and other sources — added up for the year.
Deductions & exemptions
Amounts the law lets you subtract — like 80C, 80D or the new-regime standard deduction.
Tax computation
Your tax on the net income, under the new or old regime, after any rebate.
Taxes already paid
TDS, advance tax and self-assessment tax — matched against your AIS and Form 26AS.
Payable or refund
The final line: a little more tax to pay, or a refund of what you overpaid.
Who files, and on which form
Filing is mandatory once your income crosses the basic exemption, and for companies, firms and LLPs always — plus several other triggers. The form depends on your income type.
How filing actually works
Gather your documents
Form 16, AIS, 26AS, bank and deduction proofs.
File and e-verify
Fill the right form on the portal, submit, and e-verify within 30 days.
Get processed & refunded
The department processes it and pays any refund to your bank.
Mind the calendar — see the income tax due dates for AY 2026-27 so you don't miss your deadline.
Key terms, decoded
Your Permanent Account Number — the ID every return is filed under.
The year you earn (financial year) and the year you file (assessment year).
Tax Deducted at Source — tax your employer or bank already cut and deposited.
Statements showing income and tax already reported to the department in your name.
The rebate that makes income up to ₹12 lakh tax-free under the new regime.
The final step that confirms your return — without it, it's not treated as filed.
Income tax return — FAQs
What is an income tax return (ITR)?
An ITR is a form filed with the Income Tax Department that reports your income, deductions and taxes paid for a financial year, and computes whether you owe more tax or are due a refund.
What is the full form of ITR?
ITR stands for Income Tax Return.
What is the difference between financial year and assessment year?
The financial year (FY) is when you earn the income — for example FY 2025-26. The assessment year (AY) is the next year, when you file the return and it is assessed — AY 2026-27.
Is filing an income tax return mandatory?
It is mandatory once your income crosses the basic exemption limit, and always for companies, firms and LLPs — plus several other triggers such as large deposits or foreign assets, even below the limit.
What happens if I don't file my ITR?
You can face a late-filing fee and interest, lose the ability to carry forward losses, delay any refund, and raise your chances of a notice from the department.
Do I need an ITR even if there's no tax to pay?
Often yes — to claim a refund, to carry forward a loss, or because a trigger makes filing mandatory. An ITR is also useful proof of income for loans and visas.
New to all this? Let a CA file it for you
Understanding the ITR is one thing; filing it correctly is another. Send your documents on WhatsApp and a Chartered Accountant picks the right form, the best regime, and files it on time — refund and all.
File my ITR with a CAThis explainer on income tax returns is for AY 2026-27 (FY 2025-26) and is for general information only — not tax, legal or financial advice. Rules, limits and forms are governed by the Income-tax Act, 1961 and may change. Verify the current position, or consult a Chartered Accountant, before filing.