Solar Billing & Invoicing Software
GST 2026
Create, customize, and print/download professional, GST-compliant invoices for solar systems and installation. Real-time updates, local auto-save, and QR payments.
Frequently Asked Questions — Solar Invoices in India
What HSN code should I use for a solar invoice?
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Solar panels and modules fall under HSN code 8541 (taxed at 12% GST). Solar inverters fall under HSN 8504. Installation and EPC services typically use SAC code 9954 or 9983. Always confirm with your CA before filing returns.
Is GST applicable on solar panel installation in India?
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Yes. Solar power generating systems attract 12% GST on most components. For composite EPC contracts, the government clarified that 70% of the contract value is treated as "goods" (12% GST) and 30% as "services" (18% GST), giving a blended rate of around 13.8%. Many small installers simplify to a flat 12% — consult your CA for the exact treatment.
When should I charge CGST+SGST vs IGST?
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Charge CGST + SGST (split equally, e.g. 6% + 6% for 12% GST) when the buyer is in the same state as your registered business (intra-state supply). Charge IGST (full rate, e.g. 12%) when the buyer is in a different state (inter-state supply). This generator detects this automatically based on the seller and buyer state you enter.
Can I use this invoice for official GST filing?
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This tool generates a print-ready invoice format suitable for sharing with customers and for your records. For GST return filing (GSTR-1), ensure your accounting software records match the invoice number, date, and tax amounts shown here. We recommend reconciling with your CA periodically.
Is this solar invoice generator free?
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Yes, it is 100% free with no signup required. Fill in your details, add line items, and download or print the invoice as a PDF directly from your browser using the "Print / Save as PDF" button.
How to Create a GST Invoice for Solar Sales & Installation
Whether you're a solar EPC company, a rooftop installer, or a panel distributor, every sale in India needs a proper GST tax invoice — with your GSTIN, the buyer's details, HSN/SAC codes, and the correct tax split (CGST/SGST for intra-state, IGST for inter-state).
What to include in a solar invoice
- Seller details: business name, address, GSTIN, state
- Buyer details: name, address, GSTIN (if registered), state
- Invoice number & date — sequential and unique per financial year
- Line items with description, HSN/SAC code, quantity, rate, and GST%
- Tax breakup: CGST+SGST or IGST depending on place of supply
- Grand total in INR
Common HSN/SAC codes for solar businesses
- 8541 — Solar PV panels/modules (12% GST)
- 8504 — Solar inverters and charge controllers
- 9954 / 9983 — EPC/installation/works contract services
- 8507 — Batteries (varies by chemistry, typically 18-28%)
Why CGST/SGST vs IGST matters
If you and your customer are in the same state, GST is split equally into central GST (CGST) and state GST (SGST) — for example, 6% + 6% for a 12% rate. If the customer is in a different state, the full rate is charged as IGST (e.g. 12%). Getting this wrong can cause input tax credit mismatches for your customer, so this generator auto-detects the split based on the states you enter.
Why use a free generator instead of manual Excel sheets?
A consistent invoice format builds trust with customers, reduces calculation errors in GST amounts, and saves time compared to manually building tables in Word or Excel for every job. Use this tool to quickly draft an invoice, then print or save it as a PDF to email or WhatsApp to your customer.
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