Calculate Sindh Sales Tax on services (SST) for FY2025-26 via Sindh Revenue Board (SRB). Standard 13% rate plus reduced rates for restaurants, IT, and construction. Add or extract SST in PKR.
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SST = Base Amount × Rate% | Base = Inclusive Amount ÷ (1 + Rate)Base AmountService price before SST (exclusive)RateSST rate as decimal (e.g. 0.13 for 13%)Inclusive AmountPrice already containing SSTSindh Revenue Board (SRB) levies Sales Tax on Services (SST) under the Sindh Sales Tax on Services Act 2011. The standard rate is 13%, lower than Punjab's 16%. IT/software services are zero-rated for Sindh — a significant advantage for Karachi's tech sector. Restaurants pay 8% and construction pays 5%.
Sindh Revenue Board (SRB) levies Sales Tax on Services (SST) at 13% — lower than Punjab's 16% and competitive for Karachi's large service sector. IT services in Sindh are fully zero-rated, making SRB particularly business-friendly for the technology industry. This calculator handles both directions: adding SST to service invoices and extracting it from SST-inclusive amounts.
Enter the amount, select the service category (standard 13%, restaurants 8%, IT 0%, or construction 5%), and choose add or extract mode. The calculator applies the correct SRB rate and shows the full breakdown.
A Karachi business billing Rs. 25,000 for standard services under SRB.
The client pays Rs. 28,250; Rs. 3,250 is SST payable to the SRB.
A software house in Karachi billing Rs. 100,000 for IT/software services.
No SST — IT services are zero-rated under the SRB schedule.
This is why many Karachi IT firms register with the SRB rather than FBR (18% GST): the service becomes zero-rated.
Karachi businesses switching from FBR GST (18%) registration to SRB registration often save significantly — especially IT companies who become zero-rated. This calculator helps price services correctly and split invoices for input tax credit claims.
A common mistake is applying FBR's 18% GST rate to services in Sindh — that rate applies to goods, not services. Sindh services are taxed at SRB's 13% (or lower reduced rates). Also, SRB and PRA are completely separate — if you provide services in both Punjab and Sindh, you need to register with both authorities and file separate returns.
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