Auto parts and workshops
GST billing software for automobile spare parts shops and workshops
Find the part by its number, add the mechanic's labour on the next line, and print a GST service bill the customer can pay by UPI before he rides away.
In short
SimpleERP is GST billing software for automobile spare parts shops and two-wheeler workshops in India. One invoice carries spare parts by HSN and labour charges by SAC, splits CGST and SGST or IGST, and adds credit sales to the garage's balance.
Illustration of the keyboard-first invoice editor with a focused line, live tax totals and shortcut hints.
A GST billing day at Kaveri Two Wheeler Spares
Kaveri Two Wheeler Spares sits on Omalur Road in Salem: a counter of spare parts in front, four service bays behind. By ten in the morning a delivery boy wants a clutch cable and a pair of brake shoes for his scooter, a garage owner from Hasthampatti is reading out six part numbers over the phone, and a commuter is waiting for his bike to come off the ramp.
The commuter's bill has a chain sprocket kit, one litre of engine oil and ₹450 of labour charges. On paper that was two slips, one for spares and one for service, and the GST was worked out on a calculator at the end. The garage owner's order goes on credit, and nobody writes it down until evening.
In SimpleERP the counter types the part number, the line fills with price, unit and rate, and the labour sits on the same invoice as a service. The garage's order is posted to its account the moment it is billed, so the evening tally is already done.
Can one bill carry spare parts and labour charges?
Yes. Spare parts are stocked products with an HSN code; labour charges are a service product with SAC 9987, so the labour line never touches stock. Each line is taxed at the rate on its product, and the HSN summary at the foot of the print lists both kinds of code.
- Search by part number: the product picker matches name, SKU and barcode as you type.
- Labour as a service: a general service charge, a wheel alignment or a full service, each with its own price.
- Line discount in percent or rupees for the garages that buy every week.
- UPI QR on the A4 print so the rider pays from his phone at the counter.
| Line | HSN / SAC | Qty | Taxable | Usual GST |
|---|---|---|---|---|
| Chain sprocket kit, 100 cc | 8714 | 1 set | ₹1,180 | 18% |
| Brake shoe pair, rear | 8714 | 1 pair | ₹240 | 18% |
| Engine oil 10W-30 | 2710 | 1 litre | ₹390 | 18% |
| Spark plug | 8511 | 1 piece | ₹110 | 18% |
| Labour charges: general service | 9987 | 1 | ₹450 | 18% |
| Total | ₹2,370 | ₹426.60 |
What happens when a garage takes spares on credit?
The invoice adds to that garage's balance as soon as it is posted. When the owner pays on Saturday, one receipt settles several bills, oldest first, and anything extra waits as an advance against the next order.
- Credit limit per garage, with a warning when the new bill would cross it.
- Payment terms such as 15 days for regular mechanics.
- Customer statement printed for the garage with every bill and receipt in date order.
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 take back a wrong part?
Mechanics bring back the wrong brake shoe more often than anyone admits. Raise a credit note against the original invoice, and the part returns to the shelf it came from while the GST and the garage's balance reverse in the same step.
- Credit note linked to the invoice it corrects, with its own number.
- Posted bills stay as they are: corrections are new documents, so the audit trail is complete.
- Cancel reverses an invoice that should never have been raised, without deleting it.
Does it handle a fleet owner in another state?
A courier fleet based in Bengaluru that services its bikes in Salem is billed with IGST, because the place of supply comes from the customer's GSTIN. Within Tamil Nadu the same lines split into CGST and SGST without anyone choosing.
- GSTIN checked on entry, with the state code read from its first two digits.
- Sales register and HSN summary ready for your accountant's GSTR-1.
One system
Where the service bill goes next
Posting the bill issues the parts from stock, records the sale and the GST, and adds any credit to the garage's account.
Auto parts and workshops
Part numbers as SKUs, invoices that mix parts and labour, and garage credit with ageing.
See howInventory for spares shops
Part numbers as SKUs, stock by counter, godown and workshop store, and a reorder level on every fast-moving spare.
See howAccounting for workshops
Books that write themselves from service bills and distributor bills, with garage and fleet credit in an ageing report.
See howPayroll for mechanics
Monthly salaries for mechanics, helpers and counter staff from attendance, with incentives and recovered advances on the payslip.
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 job cards and no service history per vehicle; type the registration number in the invoice notes
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
Import your spare parts from a CSV file with part number as SKU, HSN, GST rate and selling price, then add labour charges as service products with SAC 9987.
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
Can I bill spares and service labour on one invoice?
Yes. Each spare part is a product with its HSN code and each kind of labour is a service product with its SAC code. Add both to the same invoice; SimpleERP taxes every line at its own rate and prints an HSN summary that covers both.
Where do I write the bike's registration number?
In the invoice notes, which print on the bill. There is no vehicle register or job card yet, so to see past work on a bike, open the customer's transactions and read the notes on earlier invoices.
Can my counter boy bill without seeing my margins?
Yes. Duplicate the Sales role into a custom role and switch off the reports he should not open. He can still raise, print and look up invoices at the counter, while stock value and margin by product stay with you and your accountant.
What GST rate do I charge on two-wheeler parts?
It depends on the HSN code of each part. Many motorcycle parts fall under 8714, engine oil under 2710 and workshop labour under SAC 9987. Set the code and rate on each product once and the invoice applies them. Rates change, so confirm the rate for your goods with your CA or the GST portal before you rely on it.
Related
Keep reading
Auto parts and workshops
Part numbers as SKUs, invoices that mix parts and labour, and garage credit with ageing.
Read moreInventory for spares shops
Part numbers as SKUs, stock by counter, godown and workshop store, and a reorder level on every fast-moving spare.
Read moreAccounting for workshops
Books that write themselves from service bills and distributor bills, with garage and fleet credit in an ageing report.
Read more
See how GST billing works in SimpleERP for auto parts and workshops
Seven days free. No card. Your first GST invoice in minutes.