Take a tax-inclusive total of Rs 118,000 at the 18% standard sales tax rate. Because the price
already includes GST, you cannot just take 18% of Rs 118,000. Instead you divide the total by 1.18,
which gives a base price of Rs 100,000. The GST component is whatever is left, Rs 118,000 minus
Rs 100,000, which is Rs 18,000. As a check, 18% of the Rs 100,000 base is exactly Rs 18,000, and the
two add back to the Rs 118,000 you started with. This is the calculation you need when a supplier
quotes an all-in price and you have to show the base and the tax separately on an invoice or claim
input tax.
Step
Amount (PKR)
Tax-inclusive total
Rs 118,000
Divide by 1.18 for base
Rs 100,000
GST component (18%)
Rs 18,000
Base price (excl. GST)
Rs 100,000
How it is calculated
When a price already includes GST, the tax sits on top of a smaller base, so the embedded tax is not
18% of the gross figure. The tool removes GST by dividing the tax-inclusive total by one plus the
standard rate, that is by 1.18 at the 18% rate, which recovers the base price. The GST component is
then the inclusive total minus that base. Equivalently, the GST equals the inclusive total times
0.18 divided by 1.18, which works out to roughly 15.25% of the gross amount. The split always adds
back to the original total, so it is exact rather than an approximation. Use it whenever you receive
an all-in quote and need to report the net price and the sales tax on it separately.
Frequently asked questions
How do I remove GST from a price in Pakistan?
Divide the tax-inclusive total by 1.18 to get the base price, then subtract that from the total to get the GST. For example a 1,180 rupee inclusive price has a base of 1,000 rupees and 180 rupees of GST at the 18% standard rate.
Why is the GST component not simply 18% of the tax-inclusive price in Pakistan?
When a price already includes GST, the 18% was calculated on the smaller base price, not on the final total. Taking 18% of the inclusive total would overstate the tax. The correct figure is the inclusive total multiplied by 0.18 divided by 1.18, which works out to about 15.25% of the gross. This calculator does that arithmetic automatically.
When would I need to extract GST from an inclusive price in Pakistan?
Common situations include claiming input tax credit on a purchase where only the all-in total was quoted, separating the net value from tax on a supplier invoice for accounting entries, and checking whether a retail receipt correctly reflects the 18% standard sales tax rate. Registered businesses file GST returns on the base price, so splitting the tax out from inclusive totals is a routine bookkeeping step.
Are all goods and services taxed at 18% GST in Pakistan?
No. The 18% rate is the standard rate for goods under the federal Sales Tax Act. Many goods carry reduced rates, exemptions, or zero-rating, and services are taxed under provincial sales-tax laws at rates that vary by province and service type. This calculator is designed for the 18% standard goods rate. If your purchase falls under a different rate or a provincial services tax, the calculation will not apply directly.