About this sales tax calculator
Pakistan sales tax calculator for GST, invoice totals and tax-inclusive prices
Sales tax — often called GST in everyday business language — is a consumption tax added to most goods sold in Pakistan. The standard rate is 18%, but some products are exempt, zero-rated, or taxed at different rates, and services are handled by provincial authorities. This Pakistan sales tax calculator handles the two situations people actually meet in practice: adding tax to a net price (when you price a product) and extracting tax from a total (when you read a retail price that already includes GST).
How the calculator works
- 1
Pick a mode
Choose 'Add Tax to Price' for tax-exclusive amounts or 'Extract Tax from Total' for tax-inclusive amounts.
- 2
Enter the amount
Add the price, quantity and any discount. The subtotal is worked out as price × quantity, minus discount.
- 3
Select the rate
Use the 18% default, another preset, or enter a custom rate for a specific product or sector.
- 4
Read the breakdown
The result shows the base price, sales tax amount and total — including a per-unit view for each line.
Worked example: adding 18% GST to PKR 10,000
A shopkeeper prices a product at PKR 10,000 (before tax) and needs to add 18% sales tax.
- Price before tax
- PKR 10,000
- Sales tax at 18%
- PKR 1,800
- Total payable
- PKR 11,800
Estimated result
Customer pays PKR 11,800, of which PKR 1,800 is sales tax
If instead a customer sees a price of PKR 11,800 marked 'tax included', the extract mode reverses this: base = 11,800 ÷ 1.18 = 10,000 and tax = 1,800.
Why a single rate is not enough
Pakistan's sales tax system is not one flat rate. The 18% standard rate applies to most goods, but there are zero-rated items (for example, some export-related goods), exempt items, and different treatment for services such as telecom, restaurants and professional services, where provincial boards like PRA, SRB and KPRA set the rates. That is why the calculator lets you enter any custom rate rather than forcing one number.
Check the right authority for services
Common mistakes when working out sales tax
- Dividing by (1 + rate) when adding tax. To extract tax you divide, to add tax you multiply. Mixing these up is the most common error.
- Using 18% for everything. Exempt, zero-rated and reduced-rate goods all behave differently.
- Ignoring quantity and discounts. Tax is calculated on the discounted subtotal, not the per-unit list price times quantity.
- Treating services like goods. Provincial service tax is a separate regime from FBR's goods sales tax.
Limitations
This calculator estimates the tax amount only. It does not decide whether a product is taxable, exempt, or zero-rated, does not handle input tax adjustment (ITC) on your own purchases, and does not file returns. For compliance, check the Sales Tax Act 1990 rules and your province's revenue authority.
Official references
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