Sales Tax Registration (STRN): How to Register with FBR

Before you can charge sales tax, reclaim input tax, or report invoices under FBR Digital Invoicing, you need to be registered — and that means obtaining a Sales Tax Registration Number (STRN) from FBR. The STRN is your identity in the sales tax system for goods.

This guide explains what an STRN is, who needs one, what to have ready before you apply, and how the registration process generally works. Because FBR's online systems and exact requirements are updated from time to time, treat this as an orientation and confirm the current steps on FBR's portal or with your tax adviser.

What is an STRN?

An STRN is the number FBR assigns to a registered person for sales tax purposes. It appears on your sales tax invoices and is how FBR identifies you when you file returns and report invoices. Being registered means you are formally inside the sales tax system — charging output tax, claiming input tax, and filing monthly returns.

NTN first, then STRN

Sales tax registration sits alongside your income tax identity. In practice you generally need a National Tax Number (NTN) in place before or as part of registering for sales tax, because the two are linked in FBR's system. If you do not yet have an NTN, our guide to NTN registration covers that first step.

Who needs to register?

Whether you are required to register for sales tax depends on factors such as what you supply, your business activity, and whether you meet the conditions FBR sets. Because thresholds and criteria change with each budget and through notifications, do not rely on a fixed figure — confirm your obligation directly with FBR or a tax adviser.

Broadly, businesses making taxable supplies of goods, and those wanting to reclaim input tax and issue proper tax invoices, will need to register. Remember that if you supply services, that is a provincial matter and requires separate registration with the relevant provincial authority.

What you need before you apply

Having your information ready makes registration much smoother. You will typically need details such as:

• Your NTN and basic business particulars;
• Business bank account information;
• Details of your business premises;
• Information about your business activity and the goods you supply;
• Contact details, including a mobile number and email for verification.

The precise list is set by FBR and may include biometric or other verification, so check the current requirements before you begin.

How the registration process works

Sales tax registration is done through FBR's online system. In general terms the flow is:

1. Log in to FBR's online portal using your credentials;
2. Complete the sales tax registration application with your business details;
3. Provide the required supporting information and documents;
4. Complete any verification steps FBR requires;
5. Receive your STRN once the application is processed and approved.

Because the exact screens and steps evolve, follow the on-portal guidance at the time you apply. If in doubt, a tax adviser can complete the registration on your behalf.

After you are registered

Once you hold an STRN, some new responsibilities follow:

• Issue proper tax invoices showing your STRN and the tax charged;
• File monthly sales tax returns — see how to file your monthly sales tax return;
• Report invoices under FBR Digital Invoicing where it applies to you;
• Keep clean records of sales and purchases to support your input and output tax.

Registration is a commitment as well as a benefit — but it is also what lets you reclaim input tax and trade as a fully compliant business.

Frequently asked questions

Is an STRN the same as an NTN?

No. An NTN is your National Tax Number for income tax purposes; an STRN is your sales tax registration number. They are linked, and you generally need an NTN before registering for sales tax.

Do I need an STRN to report under FBR Digital Invoicing?

Yes. Reporting sales tax invoices to FBR requires being a registered person with a sales tax registration. Digital invoicing builds on that registration.

What if I only provide services?

Services are taxed provincially, so you register with the relevant provincial authority rather than for an FBR STRN. If you supply both goods and services you may need both. See our FAQs for more.

Once you have your STRN, Iris Accounts helps you issue compliant tax invoices, report them to FBR, and file your monthly return — so your registration translates straight into day-to-day compliance.