Electrical and electronics
GST billing software for electrical manufacturers
Bill ten DOL starter panels and a box of spare contactors to a pump dealer in Erode, then a star-delta panel to a farmer's dealer in Palakkad, without thinking about which tax applies.
In short
SimpleERP is GST billing software for electrical manufacturers in India. Starter panels go out under HSN 8537 and contactors and relays under 8536, dealer discounts sit on each line, and CGST and SGST or IGST follow the dealer's GSTIN.
Illustration of the keyboard-first invoice editor with a focused line, live tax totals and shortcut hints.
A GST billing day at Kovai Pump Controls
Kovai Pump Controls in the Ganapathy industrial estate of Coimbatore builds DOL and star-delta starter panels for submersible and monoblock pumps. Its buyers are pump dealers in western Tamil Nadu and across the border in Palakkad, who fit the panels at farms and borewells.
The sales desk bills both the panels it makes and the spares it trades: a contactor, an overload relay, a capacitor for a single-phase pump. A busy morning before the summer irrigation season can mean fifteen invoices, half of them with a dealer discount and two of them going to Kerala.
Which HSN codes go on a starter panel bill?
Set the HSN and rate once on each product, and every invoice line carries them. A dealer's bill often mixes panels the factory made with spares it traded.
- HSN-wise summary on the print for the dealer's accountant.
- SAC on service lines, such as a panel repair or rewiring charge.
- Sales register and HSN summary export to CSV for whoever files your GSTR-1.
| Product | HSN or SAC | Usual rate | Billed in |
|---|---|---|---|
| DOL starter panel 7.5 HP | 8537 10 | 18% | Nos |
| Star-delta starter panel 15 HP | 8537 10 | 18% | Nos |
| Contactor 25 A, overload relay | 8536 49, 8536 30 | 18% | Nos |
| Capacitor for single-phase pumps | 8532 29 | 18% | Nos |
| Copper wire 2.5 sq mm sold loose | 8544 49 | 18% | Metres or coils |
| Panel repair and rewiring | 9987 | 18% | Job |
What does a bill to a pump dealer in Erode add up to?
Erode is in Tamil Nadu like Coimbatore, so the dealer's GSTIN starting with 33 gives CGST and SGST. The same panels to a Palakkad dealer, whose GSTIN starts with 32, go out with IGST instead.
- 10 DOL starter panels @ ₹6,200 come to ₹62,000.
- 5 star-delta panels @ ₹11,800 come to ₹59,000.
- CGST 9% and SGST 9% on ₹1,21,000 are ₹10,890 each, so the bill totals ₹1,42,780.
Illustration of GST tax invoice INV-2026-27-0213 to Ravi Stores with CGST 9% and SGST 9%, round off, a UPI QR code and the amount in words.
How do I give each dealer their discount and still keep track of dues?
Each panel has one sale price. The dealer's margin goes on the line as a percent or rupee discount, GST is worked on the discounted value, and the bill joins the dealer's dues with its payment terms.
- Credit limit warning when a new bill would take a dealer past the limit you set.
- A returned panel becomes a credit note that puts it back in finished stock.
- UPI QR on the print for a farmer who buys a spare across the counter.
Can I print the panel's serial number on the invoice?
Type it into the line description, such as Sr. No. KPC-7524 to KPC-7533, and it prints under the product name. SimpleERP does not track stock by serial, so the number is a note on the bill, not a stock record.
- Line descriptions carry ratings, serial ranges or the pump model the panel suits.
- Every invoice is immutable once posted, so a printed serial range cannot change later.
One system
What it connects to
A panel invoice issues the panels from finished stock, posts the sale and GST, and adds the dealer's dues to receivables.
Electrical and electronics
Fast billing of electrical goods, stock by godown, panel assembly from BOMs and electrician credit.
See howInventory for electrical manufacturers
Contactors, relays, MCBs and enclosures in pieces, copper wire in metres and finished panels per store, at weighted average cost.
See howAccounting for electrical businesses
Pump dealer dues, distributor bills, warranty replacements and the bank's stock statement from one ledger.
See howPayroll for electrical manufacturers
Monthly pay for wiremen, assemblers and testers from attendance, with PF, ESI where it applies and advances recovered.
See howManufacturing for panel builders
A BOM per starter panel rating and work orders that turn contactors, relays and enclosures into finished panels at real cost.
See howGST billing
Tax invoices with CGST, SGST or IGST by place of supply, HSN on every line and a UPI QR on the print.
See how
Honest limits
What SimpleERP does not do yet
- E-invoice IRN and QR code, and e-way bills, are not generated through the government APIs
- Cess is not calculated; GST return filing stays with you or your accountant
- No price lists: every line is priced as you bill it
- No serial number or warranty register per panel; serials go in the line description
Getting started
Start with GST billing
Sign up with your phone
Name, phone number and a password. No card for the seven-day trial, and email is optional.
Tell us about the business
Type your GSTIN and the state fills itself. Accounts, GST rates, units, roles and numbering are seeded for you.
Add what you sell
Add each panel rating and each spare you sell, such as DOL starter 7.5 HP under HSN 8537, with its GST rate and dealer price.
Post your first GST invoice
Pick the customer, add lines and save. The place of supply picks CGST and SGST or IGST for you.
FAQ
Questions, answered
A dealer in Kerala collects panels from our factory in Coimbatore. Is it IGST or CGST and SGST?
SimpleERP sets the place of supply from the dealer's GSTIN, which gives Kerala and IGST. If your CA advises a different place of supply for a collection at your gate, change it on the invoice before posting and the tax split changes with it.
What GST rate do starter panels and contactors attract?
Control panels are usually billed under HSN 8537 and contactors, relays and MCBs under 8536, and both have commonly carried 18%. Set the rate on each product once. Rates change, so confirm the rate for your goods with your CA or the GST portal before you rely on it.
Can I raise a quotation for a panel and turn it into a bill later?
Yes. A quotation becomes a sales order and then an invoice, with the lines copied at each step. If a dealer orders twenty panels and takes ten now, invoice the order in parts and the rest stays open.
We replace burnt contactors free under warranty. How is that billed?
A free replacement is not a sale, so it does not need an invoice in SimpleERP. Take the contactor out of stock with an adjustment, reason other and a note saying warranty replacement, so the cost shows in the books and the shelf count stays right.
Related
Keep reading
Electrical and electronics
Fast billing of electrical goods, stock by godown, panel assembly from BOMs and electrician credit.
Read moreInventory for electrical manufacturers
Contactors, relays, MCBs and enclosures in pieces, copper wire in metres and finished panels per store, at weighted average cost.
Read moreManufacturing for panel builders
A BOM per starter panel rating and work orders that turn contactors, relays and enclosures into finished panels at real cost.
Read more
See how GST billing works in SimpleERP for electrical and electronics
Seven days free. No card. Your first GST invoice in minutes.