The deadline is tomorrow and you have not started. It is a more common position than you might think, and it is entirely recoverable - a straightforward salaried return can be filed in well under two hours if you work in the right order.
Here is what to do tonight, and what it actually costs if you cannot make the date.
Hour one: gather your documents
Do not open the portal yet. Almost all last-minute filing errors come from hunting for a document mid-form and guessing at a number instead. Collect everything first:
- PAN and Aadhaar, and confirm the two are linked - your return will not process otherwise.
- Form 16 from your employer, if you are salaried.
- Form 26AS and your Annual Information Statement (AIS), both downloadable from the e-filing portal. These are the most important documents in the stack.
- Bank statements and interest certificates for the financial year.
- Investment and premium proofs for any deductions you intend to claim.
- Capital gains statements from your broker or mutual fund, if applicable.
- Last year's return, if you have it, as a reference for what you claimed.
Hour two: file
With documents in hand, you have two realistic routes.
Filing it yourself. Log in to the official income tax e-filing portal using your PAN. Select the assessment year and the correct form for your income - ITR-1 if you are salaried with simple income, ITR-2 or ITR-3 if you have capital gains or business income. Much of the return comes pre-filled; your job is to check every pre-filled figure against your own documents rather than trusting it. Choose your tax regime, enter your deductions, pay any balance tax through the portal, and submit.
Handing it to a CA. If your return involves capital gains, business income, multiple properties, or foreign assets, a rushed self-filed return is a false economy. A professional can turn a complete document set around quickly, and the cost of getting the form and regime right is usually less than the cost of getting them wrong.
The step people forget: e-verification
Submitting is not filing. Your return is not treated as filed until it is verified. Every year, a number of people submit on the last night, close the laptop, and discover months later that their return was never valid because they skipped this step.
E-verify immediately after submitting - Aadhaar OTP is the fastest route, and net banking also works. Do it in the same sitting.
If you genuinely cannot file in time
Missing the deadline is not a catastrophe, but be clear-eyed about the cost. You can still file a belated return, and you should do so as soon as possible. What it costs you:
- A late filing fee under Section 234F.
- Interest under Section 234A on any unpaid tax, running from the due date until you pay.
- The loss of the right to carry forward certain losses - business losses and capital losses - to set off against future income. For anyone with trading or business losses, this is usually the most expensive consequence by a wide margin.
The belated return window and every key date is set out in our guide to the ITR filing last date for FY 2025-26.
After you file
- Save the acknowledgement number and download the acknowledgement PDF.
- Confirm the return shows as verified, not merely submitted.
- Check that the bank account nominated for your refund is correct and pre-validated.
- Keep your supporting documents - you may need them if the department asks questions later.
If you spot a mistake after filing, you are not stuck with it. A revised return lets you correct it - see our guide on filing a revised ITR.
Frequently Asked Questions
Can I still file after the due date?
Yes, as a belated return. It attracts a late fee under Section 234F and interest under Section 234A on unpaid tax, and you lose the ability to carry forward certain losses.
Can I file my return without Form 16?
Yes. Form 16 makes it easier but is not mandatory. You can reconstruct your salary income from payslips, your bank statements, Form 26AS, and the AIS.
Is my return complete once I hit submit?
No. A return is not treated as filed until it is verified. E-verify immediately using Aadhaar OTP or net banking - a submitted but unverified return is not a filed return.
Is it safe to trust the pre-filled data on the portal?
Treat it as a starting point, not a final answer. Check every pre-filled figure against Form 16, Form 26AS, and the AIS, and correct any discrepancy before submitting.
What is the single most expensive mistake when filing late?
For most people with business or trading losses, it is losing the right to carry those losses forward. The late fee is fixed; a forfeited loss carry-forward can cost far more over subsequent years.
Running out of time? Talk to Regikart
A deadline-night return is exactly when the expensive mistakes happen - the wrong form, the wrong regime, an unverified submission. Regikart's Chartered Accountants file returns quickly and correctly, including complex cases with capital gains, business income, or foreign assets.
We handle income tax filing for salaried professionals, freelancers, and business owners across India, from offices in Kolkata, Delhi, Gurugram, and Pune. Get in touch and we will file it properly, even at short notice.
About the author
Srishty
Senior Advisor at Regikart. Want to discuss this in the context of your business?
