Billing where one invoice is half parts and half labour.

01 · One bill

Parts and labour do not need two systems

A garage invoice is a mix: a filter, two litres of oil, and three hundred rupees of labour. Labour goes on as its own line — an item you create once and reuse, or an additional charge — so the customer gets one bill with everything on it and the tax is applied correctly to each part of it.

• Parts priced from stock, labour as its own line
• Additional charges for job-specific work
• One printed invoice, not a parts bill and a slip
• Per-line tax where parts and service differ

02 · Units

Litres, sets and pairs, not everything in pieces

Lubricants go by the litre and the millilitre, brake shoes and bulbs by the pair, gaskets by the set, wire by the metre and everything else by the piece. Quantities take decimals so half a litre is half a litre, and the stock figure follows the unit you actually sold in.

• pcs, set, pair, ltr, ml, mtr, box
• Decimal quantities for part litres
• Type your own unit if the list is missing one
• Stock counted in the unit you sell in

03 · Credit

The mechanic who buys from you every week

A parts counter's regulars are workshops, and they buy small amounts constantly and settle periodically. Credit here is tied to the bills that created it, so an account can be read back line by line rather than as a number, and each party carries the date you expect to be paid by so nobody is chased early.

• Bills go on account against the workshop
• Payments settle the specific invoices they clear
• A payment-by date per party
• Parties grouped by area for collection rounds

04 · Parts

Finding the right part without a catalogue

There is no vehicle-model catalogue and no part-number cross-reference — this is not a parts database. What there is: search from the first few letters, your own part number in the SKU field, a barcode if the packaging has one, and the ability to add an item mid-bill. Shops name parts the way they already say them, and it works because the person billing is the person who knows the stock.

• Search by name or your own part number
• Barcode scanning available, off by default
• Add an item mid-bill without leaving it
• No vehicle-model catalogue or part cross-reference