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For Civil, Mechanical, Electrical & IT Engineers
Generate professional GST invoices for engineering consultancy, project design, site supervision, and technical advisory services. Handles 18% GST with correct CGST, SGST, and IGST split.
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| Item Description | Qty | Rate | Tax % | Amount | |
|---|---|---|---|---|---|
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All engineering consultancy and professional services attract 18% GST under SAC 998311. This covers civil engineering design, mechanical engineering consultancy, electrical system design, structural analysis, IT system design, and project management services. There are no exemptions for any discipline of engineering consultancy.
A key distinction exists between engineering advisory (pure services, SAC 998311 at 18%) and works contracts where the engineer also executes physical work (SAC 995411–995422). Works contracts for construction attract 12% or 18% depending on the project type. Our invoice generator handles pure service invoicing with the correct SAC and GST calculation.
| Service | SAC Code | GST Rate |
|---|---|---|
| Engineering design & consultancy (all disciplines) | 998311 | 18% |
| Project management & site supervision | 998311 | 18% |
| Construction & civil works contract | 995411 | 12–18% |
| Electrical installation works | 995421 | 18% |
| IT & software systems design | 998314 | 18% |
A Pune structural engineer invoices a Mumbai real estate developer ₹4,00,000 for structural design and drawings for a commercial building (SAC 998311). This is inter-state supply (Pune = Maharashtra, Mumbai = Maharashtra — same state): CGST 9% = ₹36,000 + SGST 9% (Maharashtra) = ₹36,000. Total invoice: ₹4,72,000. The developer can claim ITC on ₹72,000 if the project is for sale.
18% GST applies to all engineering consultancy, design, and advisory services across all disciplines — civil, structural, mechanical, electrical, and IT engineering. SAC code 998311 covers most engineering consultancy services.
SAC 998311 for design, consultancy, and project management. SAC 995411 for civil works contracts. SAC 995421 for electrical installation. Choose the SAC that best describes the primary service being billed.
18% GST applies to engineering services for government projects. The government entity pays GST and can claim ITC if registered. Some infrastructure projects (affordable housing, government buildings) may qualify for 12% works contract rate.
Yes, if annual consultancy income exceeds ₹20 lakh. For inter-state projects — billing clients in other states — registration is mandatory from the first rupee. Freelance engineers working with foreign clients should register to file LUT and export at 0% GST.
Engineering design and consultancy exported to foreign clients is a zero-rated supply — 0% GST. File a Letter of Undertaking (LUT) with the GST department and receive payment in foreign exchange. This is a significant advantage for engineering consultants with international projects.
Free, no signup. Correct SAC codes and 18% GST for engineering consultancy and project services.