--- title: "Polygraph Test Services | Professional Polygraph Test Solutions" description: "Expert polygraph test services covering compliant, reliable, and high-quality solutions tailored to your needs. SAC Code 998527." canonical: "https://busy.in/sac-code-998527/" --- # Polygraph Test under SAC Code 998527 Part of [SAC 9985: Support services to business](https://busy.in/sac-code-9985/). Polygraph services under SAC code 998527 relate to lie detector tests used in sensitive hiring, internal investigations and high risk security checks. A trained examiner conducts the test, records responses and prepares a clear report for the client. Businesses, government bodies and law firms use these services when they need an additional tool to judge honesty in sensitive situations. These assignments are normally booked case by case and invoiced with GST as per the applicable security services rate. ## 998527 SAC Code GST rate Polygraph testing services are part of investigation and security services and are used mainly in high sensitivity matters. Under GST they follow the standard 18% rate, with input tax credit generally available to registered business clients. The September 2025 GST restructuring kept such professional security services in the 18% slab. There was no movement to the lower 5% or higher 40% buckets, so most polygraph engagements continue to be billed with 18% GST on the agreed fee. **The table below shows the latest standard GST rate applicable to SAC code 998527.** | SAC code | Description | New GST rate (from 22 Sep 2025) | Old GST rate (till 21 Sep 2025) | Notes | | --- | --- | --- | --- | --- | | 998527 | Polygraph services | 18% with ITC | 18% with ITC | Polygraph / lie-detector services are listed at 18% GST under support-services headings; event-specific concessional entries do not change the normal business rate. | While billing for lie detector examinations, the examiner or agency should use this SAC, show the service value separately and apply 18% GST. Clients who use the report in the course of taxable business may be able to claim full input tax credit, subject to general rules. ## Practical classification guidance If the main work is field investigation, guard deployment, armoured transportation or security consulting, one of the other SAC codes from this group will be more accurate. Matching the service description closely with the SAC label reduces confusion when officers review invoices and returns. ## Conclusion Polygraph testing is a niche service used only in sensitive cases but its GST treatment is simple. It is taxed at 18% with normal credit, the same as most investigation and security support services. Service providers and users should keep clear engagement letters, invoices and reports so that the tax trail for each assignment stays easy to follow. ## Explore more ### Other SAC services under 9985 - [998511: Executive Search Firm](https://busy.in/sac-code-998511/) - [998512: Recruitment Agency](https://busy.in/sac-code-998512/) - [998513: Contract Staffing](https://busy.in/sac-code-998513/) - [998514: Temporary Staffing](https://busy.in/sac-code-998514/) - [998515: Payroll Outsourcing](https://busy.in/sac-code-998515/) - [998516: Temp To Perm Staffing](https://busy.in/sac-code-998516/) - [998517: Co Employment](https://busy.in/sac-code-998517/) - [998519: Labour Supply](https://busy.in/sac-code-998519/) - [998521: Investigation](https://busy.in/sac-code-998521/) - [998522: Security Consulting](https://busy.in/sac-code-998522/) - [998523: Security System Installation](https://busy.in/sac-code-998523/) - [998524: Armoured Car](https://busy.in/sac-code-998524/) - [998525: Security Guard](https://busy.in/sac-code-998525/) - [998526: Dog Training](https://busy.in/sac-code-998526/) - [998528: Fingerprinting](https://busy.in/sac-code-998528/) - [998529: Security](https://busy.in/sac-code-998529/) - [998531: Disinfection](https://busy.in/sac-code-998531/) - [998532: Window Cleaning](https://busy.in/sac-code-998532/) - [998533: Cleaning](https://busy.in/sac-code-998533/) - [998534: Water Tank Cleaning](https://busy.in/sac-code-998534/) - [998535: Sterilization](https://busy.in/sac-code-998535/) - [998536: Chimney Cleaning](https://busy.in/sac-code-998536/) - [998537: Exterior Building Cleaning](https://busy.in/sac-code-998537/) - [998538: Vehicle Cleaning](https://busy.in/sac-code-998538/) - [998539: Professional Cleaning](https://busy.in/sac-code-998539/) - [998540: Packaging](https://busy.in/sac-code-998540/) - [998541: Parcel Packing](https://busy.in/sac-code-998541/) - [998542: Coin Packing](https://busy.in/sac-code-998542/) - [998549: Packaging Solutions](https://busy.in/sac-code-998549/) - [998551: Travel Reservation](https://busy.in/sac-code-998551/) - [998552: Tour Package Booking](https://busy.in/sac-code-998552/) - [998553: Convention Centre Booking](https://busy.in/sac-code-998553/) - [998554: Cinema Ticket Booking](https://busy.in/sac-code-998554/) - [998555: Tour Operator](https://busy.in/sac-code-998555/) - [998556: Tourist Guide](https://busy.in/sac-code-998556/) - [998557: Tourism Promotion](https://busy.in/sac-code-998557/) - [998559: Travel Management](https://busy.in/sac-code-998559/) - [998591: Credit Rating](https://busy.in/sac-code-998591/) - [998592: Collection Agency](https://busy.in/sac-code-998592/) - [998593: Customer Support](https://busy.in/sac-code-998593/) - [998594: Office Administration](https://busy.in/sac-code-998594/) - [998595: Mailing](https://busy.in/sac-code-998595/) - [998596: Event Management](https://busy.in/sac-code-998596/) - [998597: Landscape Maintenance](https://busy.in/sac-code-998597/) - [998598: Information](https://busy.in/sac-code-998598/) - [998599: Business Support](https://busy.in/sac-code-998599/) ### All SAC headings - [99: All Services Accounting](https://busy.in/sac-code-99/) - [9954: Services in building & construction](https://busy.in/sac-code-9954/) - [9961: Services in wholesale trade](https://busy.in/sac-code-9961/) - [9962: Services in retail trade](https://busy.in/sac-code-9962/) - [9963: Accommodation, food & beverage services](https://busy.in/sac-code-9963/) - [9964: Passenger transport services](https://busy.in/sac-code-9964/) - [9965: Goods transport services](https://busy.in/sac-code-9965/) - [9966: Rental services of transport vehicles](https://busy.in/sac-code-9966/) - [9967: Supporting services in transport](https://busy.in/sac-code-9967/) - [9968: Postal & courier services](https://busy.in/sac-code-9968/) - [9969: Electricity, gas & water supply services](https://busy.in/sac-code-9969/) - [9971: Financial & related services](https://busy.in/sac-code-9971/) - [9972: Real estate services](https://busy.in/sac-code-9972/) - [9973: Leasing or rental services](https://busy.in/sac-code-9973/) - [9981: Research & development services](https://busy.in/sac-code-9981/) - [9982: Legal & accounting services](https://busy.in/sac-code-9982/) - [9983: Professional, technical & business services](https://busy.in/sac-code-9983/) - [9984: Telecommunications & broadcasting supply services](https://busy.in/sac-code-9984/) - [9985: Support services to business](https://busy.in/sac-code-9985/) - [9986: Support services to agriculture, hunting, forestry & more](https://busy.in/sac-code-9986/) - [9987: Maintenance, repair & installation services](https://busy.in/sac-code-9987/) - [9988: Manufacturing services on physical inputs](https://busy.in/sac-code-9988/) - [9989: Services in publishing, printing & bookbinding](https://busy.in/sac-code-9989/) - [9991: Public administration & other services](https://busy.in/sac-code-9991/) - [9992: Education services](https://busy.in/sac-code-9992/) - [9993: Human health & social care services](https://busy.in/sac-code-9993/) - [9994: Sewage & waste collection](https://busy.in/sac-code-9994/) - [9995: Services of membership organizations](https://busy.in/sac-code-9995/) - [9996: Recreational, cultural & sporting services](https://busy.in/sac-code-9996/) - [9997: Other Services](https://busy.in/sac-code-9997/)