GST on Solar Panels and Installation in India (2026) — Complete Tax Guide for Dealers
GST treatment of solar products is one of the most commonly misunderstood areas in the solar business. Mistakes in GST billing can lead to penalties, input tax credit (ITC) denial, and customer disputes. This guide covers the correct GST rates, HSN codes, and practical billing guidance for solar dealers in India as of 2026.
GST Rates on Solar Products (2026)
| Product / Service | HSN Code | GST Rate | Notes |
|---|---|---|---|
| Solar PV Modules (panels) | 8541 40 11 | 12% | Increased from 5% in 2022 |
| Solar Inverters | 8504 40 90 | 12% | |
| Solar Charge Controllers | 8504 40 30 | 12% | |
| Solar Batteries (Lithium) | 8507 60 00 | 18% | |
| Solar Batteries (Lead Acid) | 8507 10 00 | 28% | Higher rate — specify correctly |
| Mounting Structures (GI/Aluminium) | 7308 / 7610 | 18% | Varies by material |
| DC Cables | 8544 49 90 | 12% | |
| Solar Water Pumps | 8413 | 12% | |
| Installation & EPC Service | 9954 | 12% | Works contract for solar |
| Annual Maintenance Contract (AMC) | 9987 | 18% | Service contract |
HSN codes and rates as understood as of June 2026. Always confirm with your CA. Composite supply rules may apply if equipment + installation are bundled.
Composite Supply: The "Works Contract" Rule
When you sell solar panels + installation as a single bundled "turnkey solar installation" contract, it may qualify as a Works Contract under GST. Key implications:
- A works contract for immovable property (rooftop solar is treated as immovable in many interpretations) attracts GST as applicable to the principal supply
- If solar is the principal supply (which it is in most EPC contracts), some argue the composite rate should apply
- Practical approach used by most dealers: Issue separate invoices for equipment (12%) and installation service (12%) to maintain clarity and avoid ambiguity
This area has seen litigation and evolving rulings. Consult a CA specialising in GST before finalising your billing structure.
Input Tax Credit (ITC) for Solar Dealers
As a GST-registered solar dealer, you can claim ITC on:
- Solar panels, inverters, cables purchased for resale (claim ITC at purchase, pay GST on sale)
- Business expenses like vehicle fuel (limited ITC), office rent, etc.
- Tools and equipment purchased for your business
ITC is not claimable by end customers (homeowners) on solar system purchases, as it is used for personal consumption (not for taxable output supply).
Billing Best Practices for Solar Dealers
- Always issue GST-compliant invoices with correct HSN codes, GSTIN of buyer (if B2B), and tax breakdowns
- Separate equipment and service line items on your invoice for clarity
- File GSTR-1 and GSTR-3B on time — delays attract interest and late fees
- Maintain purchase invoices from suppliers for ITC claims — always buy from GST-registered distributors
- Check e-invoicing requirement — applicable if your annual turnover exceeds ₹5 crore (as of 2026)
GST and PM Surya Ghar Subsidy
The PM Surya Ghar subsidy is deducted from the total system cost by the government before billing the customer. Your GST invoice to the customer should be for the net amount after subsidy deduction, or alternatively, issue the invoice for the full amount and show the subsidy as a reduction — your CA should guide you on the correct treatment to avoid GST liability mismatch.
🔗 Related Guides
Business Registration Documents How to Become Solar Dealer Dealership Investment Guide Solar Cost CalculatorFrequently Asked Questions
Ready to Start Your Solar Business?
Register on SolarCalculators.in — get verified leads from homeowners in your city, free to join.
Register as Solar Installer →