Every year, thousands of individuals and businesses in Pakistan either miss their tax filing deadline or make avoidable mistakes during registration — often simply because the process feels more complicated than it actually is. Whether you’re a salaried employee filing for the first time, a freelancer figuring out where to start, or a business owner registering a company with the FBR, this guide walks through exactly what’s involved.

Under the Income Tax Ordinance, 2001, filing a return isn’t optional for most people earning an income in Pakistan. You’re generally required to register and file if you:

Who Needs to Register and File a Tax Return?

• Earn a taxable salary or business income
• Own property above a certain value
• Run a registered company, partnership, or sole proprietorship
• Hold a bank account above the prescribed threshold
• Earn income from freelancing, rent, or investments

Even if your income falls below the taxable limit, registering and filing has real practical value — being on the Active Taxpayer List (ATL) significantly reduces the withholding tax you pay on property purchases, vehicle registration, banking transactions, and more. Non-filers routinely pay double the withholding tax that filers pay on the same transactions.

Step 1: Registration — Getting Your NTN

For individuals, there’s a helpful shortcut: your CNIC itself acts as your National Tax Number (NTN). You don’t need to apply for a separate number.

To register on FBR’s online portal, IRIS:

1. Visit iris.fbr.gov.pk (the current version is IRIS 2.0, with a redesigned, more mobile-friendly interface)
2. Click “Registration for Unregistered Person”
3. Enter your 13-digit CNIC (without dashes)
4. Verify via the OTP sent to your NADRA-registered mobile number and email
5. Complete the registration form (Form 181) with your personal and income details
6. Set your password

Once submitted, your NTN is generated automatically, and login credentials are sent via SMS and email. If your CNIC and mobile number are properly linked with NADRA, the whole process typically takes under 15 minutes.

Companies and AOPs (Associations of Persons) register separately and are issued a 7-digit NTN, used alongside their CNIC/registration details for all subsequent filings.

Common hiccup: If your mobile number isn’t NADRA-verified, the OTP won’t go through. In that case, a visit to your nearest NADRA e-Sahulat center to update your details is required before you can proceed.

Step 2: Filing Your Income Tax Return

Once registered, filing itself happens entirely through IRIS:

1. Log in at iris.fbr.gov.pk using your CNIC (or NTN, for companies) and password
2. From the left panel, go to Declaration → Income Tax Return
3. Select the correct tax year — for the year ended 30 June 2026, this is Tax Year 2026
4. Enter your income details across the relevant categories: salary, business income, rental income, capital gains, or freelance/foreign income
5. Enter tax already withheld — this includes withholding on your salary, bank profit, mobile top-ups, and any property or vehicle transactions
6. Complete the wealth statement, which is mandatory alongside the return for most filers
7. Review the auto-computed tax liability
8. If tax is payable, generate a PSID (Payment Slip ID) and pay through your bank or a mobile wallet
9. Submit the return and download your Acknowledgement Slip as proof of filing

One important change with IRIS 2.0: the system now pre-populates parts of your return using data FBR already holds — including property records, vehicle registrations, and bank withholding information. This makes it easier to file accurately, but it also means that omitting an asset the state already knows about is a common trigger for a mismatch notice. Reviewing your FBR-Maloomat profile before filing is a good habit.

Step 3: Sales Tax Registration (For Applicable Businesses)

If your business’s annual turnover exceeds PKR 10 million, sales tax registration becomes mandatory:

1. Log in to IRIS and select Registration → Sales Tax Registration
2. Fill in your business details
3. Upload supporting documents — proof of business ownership, CNIC, lease agreement, and a utility bill for the business premises
4. Submit the application

Once reviewed and approved, your business is issued a Sales Tax Registration Number (STRN). Registered businesses are then required to file monthly sales tax returns — typically due by the 18th of the following month — and late filing attracts penalties.

Deadlines You Shouldn’t Miss

• Salaried individuals, other individuals, and AOPs: Return due 30th September each year
• Companies with a 30th June year-end: Return due 31st December
• Monthly sales tax returns: Due by the 18th of the following month for registered businesses

FBR periodically extends the individual filing deadline, so it’s worth confirming the current date closer to the deadline rather than assuming it will always fall on the same day.

Where People Commonly Go Wrong

• Treating the wealth statement as optional. It isn’t, for most filers, and inconsistencies between declared income and net wealth are a frequent source of FBR notices.
• Relying entirely on IRIS’s auto-calculation for business income. If you have property income, capital gains, or fall under minimum tax provisions, the computation is rarely as simple as the portal suggests, and a professional review can prevent an incorrect filing.
• Ignoring pre-populated data mismatches. If IRIS shows a property or vehicle you didn’t declare, resolving it before submission is far easier than responding to a notice afterward.
• Missing the distinction between individual and business filing requirements — sole proprietors, AOPs, and private limited companies are taxed differently, and the correct structure affects both your filing obligations and your tax liability.

Why Professional Guidance Matters

The IRIS portal has made self-filing more accessible than it used to be, but for anyone with more than a straightforward salary — business income, rental property, capital gains, or a company structure to account for — an incorrect filing can lead to notices, penalties, or an inflated tax liability that a proper review would have avoided.

At Nadeem Malik Advocate, we regularly assist individuals and businesses across Islamabad and Rawalpindi with NTN registration, income tax return filing, sales tax registration, and FBR compliance more broadly — along with representation in cases where a dispute or notice needs to be addressed directly with the tax authorities.

You can also use our Tax Calculator to get a quick estimate of your tax liability before filing.

Need help with your registration or filing this year? Get in touch or reach out on WhatsApp to book a consultation.

Disclaimer: This article is intended for general informational purposes and reflects the FBR IRIS process and tax year deadlines as of 2026. Tax laws, slabs, and deadlines are subject to change by the Finance Act each year — for guidance specific to your situation, please consult directly.