Engineering & Technical Services SAC Codes & GST Rate
Engineering design, technical testing, inspection, certification, and R&D services.
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| Item Description | Qty | Rate | Tax % | Amount | |
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Engineering & Technical Services — SAC Code List
| SAC Code | Service Description | GST Rate |
|---|---|---|
| 998311 | Engineering design & consultancy | 18% |
| 998312 | Technical testing & analysis | 18% |
| 998313 | Quality inspection & certification | 18% |
| 998314 | R&D technical services | 18% |
| 998315 | Environmental engineering services | 18% |
Source: CBIC GST Rate Notification. Always verify the current rate at cbic-gst.gov.in before filing returns.
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Sample GST Invoice — Engineering & Technical Services
A Chennai engineering consultancy invoices a manufacturing client ₹3,00,000 for factory design and layout services (SAC 998311). GST at 18% = ₹54,000. Total invoice: ₹3,54,000.
How to enter on your GST invoice:
- Select "Service" type in the invoice generator
- Enter SAC code: 998311
- Enter the service description matching your work
- Select GST rate: 18%
- Enter buyer's state — CGST+SGST applies for intra-state, IGST for inter-state
GST Applicability — Engineering & Technical Services
| Scenario | Tax Type | Rate |
|---|---|---|
| Intra-state supply (seller & buyer same state) | CGST + SGST | 18% split equally |
| Inter-state supply (different states) | IGST | 18% (full) |
| Export (service recipient outside India) | Zero-rated (IGST 0% or LUT) | 0% (refundable) |
Frequently Asked Questions
What SAC code do engineering consultants use?
Engineering consultancy, design, and advisory services use SAC 998311. Technical testing and laboratory analysis services use SAC 998312. Both attract 18% GST.
Is R&D expenditure subject to GST?
Yes. R&D services provided on a contract basis (by research firms, institutions, or laboratories) attract 18% GST under SAC 998314. However, R&D grants and funding received by recognised research institutions may be treated as non-taxable grants.
What GST applies to quality certification and inspection?
Quality inspection, product testing, and certification services (BIS, ISO certification facilitation) attract 18% GST. Third-party inspection agencies must charge GST on their professional fees at 18%.
Can an engineering company export services zero-rated?
Yes. Engineering design, CAD/BIM services, and technical consulting provided to overseas clients qualify as service exports. These are zero-rated under GST — either export with IGST payment and claim refund, or export under LUT without paying IGST.
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