Sales Tax in Pakistan: A Beginner's Guide for Small Businesses

If you are running a small business in Pakistan and just starting to deal with sales tax, the terminology can feel overwhelming — GST, input tax, output tax, STRN, annexures, provincial authorities. In reality, the core ideas are straightforward once you see how they fit together.

This beginner guide walks through the essentials in plain language: what sales tax is, the crucial split between goods and services, how the tax you collect and pay balance out, and what registration and returns involve.

What is sales tax?

Sales tax is a tax on the supply of goods and certain services. As a registered business, you charge it on your sales (this is your output tax) and you pay it on your purchases (your input tax). You are essentially collecting the tax on the government's behalf and passing on the difference. The end consumer ultimately bears the cost.

People often use "GST" (General Sales Tax) and "sales tax" interchangeably in Pakistan, and for everyday purposes they mean the same thing.

The most important split: goods vs services

The single most important thing for a newcomer to understand is that sales tax in Pakistan is split between two levels of government:

• Sales tax on goods is federal — administered by the Federal Board of Revenue (FBR).
• Sales tax on services is provincial — administered by each province's own authority.

This matters because it determines who you register with, which return you file, and which portal you use. If you sell goods you deal with FBR; if you provide services you deal with your provincial authority. Some businesses do both and therefore deal with both. We explain this split in more depth in sales tax on services vs goods.

The provincial service authorities

Each authority has its own registration, return and portal, and its own standard rate for services.

The standard GST rate on goods

Sales tax on goods is charged at a standard rate set by FBR, currently 18%. Some items are taxed at reduced rates, some are zero-rated, and some are exempt. Because rates and item classifications change over time, always confirm the rate for your specific goods with FBR or your tax adviser. Our guide to the GST rate in Pakistan goes into the standard and reduced rates in more detail.

How input tax and output tax work together

This is the heart of how sales tax actually works. Each tax period:

• You add up the output tax you charged on sales;
• You add up the input tax you paid on eligible purchases;
• You pay FBR the difference (output minus input), or carry forward a credit if input exceeds output.

This offsetting is why keeping your purchase invoices is so important — every rupee of eligible input tax reduces what you owe. We break the mechanics down in input tax vs output tax adjustment.

Registration: getting your STRN

To charge and reclaim sales tax on goods, you register with FBR and receive a Sales Tax Registration Number (STRN). Registration is done through FBR's online system, and you will typically need your business details and NTN in place first. Our step-by-step guide to sales tax registration (STRN) covers the process.

If you supply services, you register separately with the relevant provincial authority — and if you do both, you may need both registrations.

Filing your monthly return

Registered persons file a sales tax return monthly, supported by annexures that list your sales and purchases. The return brings together your output and input tax for the period and establishes what you owe or carry forward. With FBR Digital Invoicing reporting your sales invoices in real time, much of the sales side is captured as you go — see our guide on how to file your monthly sales tax return.

Further tax on unregistered buyers

One rule that catches newcomers out: when you make a taxable supply to a buyer who is not registered for sales tax, a further tax of 3% generally applies on top of the normal sales tax. It is a nudge to encourage buyers into the tax net. We explain when it applies in further tax on unregistered buyers.

Frequently asked questions

Do I have to register for sales tax?

It depends on what you supply and whether you meet the conditions for registration. Requirements and thresholds change, so confirm your obligation with FBR, your provincial authority, or a tax adviser.

What is the difference between input and output tax?

Output tax is what you charge customers on your sales; input tax is what you pay suppliers on your purchases. You pay the government the difference each period.

Is GST the same as sales tax?

In everyday Pakistani usage, yes — GST (General Sales Tax) and sales tax refer to the same thing. See our FAQs for more beginner questions.

Iris Accounts keeps track of your input and output tax as you trade, reports your sales invoices to FBR, and helps you prepare your monthly return without the manual reconciliation.