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RMS

RMS for spare parts shops

Auto parts store software that finds parts by number and vehicle

RMS is offline auto parts store software for spare parts dealers. Find any part by its OEM, part or alternate number, see which make, model and year it fits, sell by the piece, litre or metre, print a pick list sorted by rack, and manage purchase orders and supplier credit. It runs without internet.

Last updated 18 October 2026

What problems does it solve?

A day at your counter with RMS

  1. 1

    Search by number

    Type an OEM, part or alternate number in the item box. The suggestions show the part number and its rack.

  2. 2

    Or search by vehicle

    Use Fits to filter parts by make, model and year, or tick Only parts for this vehicle at the counter.

  3. 3

    Bill and pick by rack

    Save the bill, then print a pick list sorted by rack so the helper collects every part in one walk.

    A5 invoice with the shop's details, customer, vehicle, items and totals
    A5 invoice. A4, A5 or A6 invoices with your logo, tagline and footer.
  4. 4

    Reorder and receive

    The reorder list fills a purchase order by supplier. Receive goods in parts and buy on credit.

    Purchase order form with supplier, items, quantities and costs
    Purchase order. Orders received in parts, on credit, with the supplier's ledger.
  5. 5

    Settle accounts

    Workshops pay on account; you pay suppliers from their ledger. Both balances stay current.

    Customer account statement with bills, payments and running balance
    Customer account statement. Every credit bill and payment with a running balance and ageing.

What makes auto parts store software different?

A parts shop has many small items, many numbers per item and customers who describe the same part in different ways. Generic retail software searches by name and barcode, which is not how mechanics ask. RMS is auto parts store software that searches the way your counter works: by OEM number, by your own part number, by an alternate number, or by the car it goes on.

Each product can hold its rack location. The suggestions under the item box show the rack while you type, and the printed pick list sorts every part on a bill by rack, so a new helper can collect an order without asking where things are.

How does search by make, model and year help?

When a part is entered, list the vehicles it fits by make, model and year. Then:

  • Products → Fits shows every part for a Civic 2018 or a Corolla 2015;
  • at the counter, choose the customer’s vehicle and tick Only parts for this vehicle to narrow the list;
  • the parts by vehicle report shows what sells for which cars, so you stock the right things.

What about boxes, drums and loose lengths?

Parts rarely arrive the way they are sold. Spark plugs and bulbs come in boxes, oil and coolant in drums or gallon cans, and fuel hose on a reel. Give each product its units and conversions, such as 1 box = 10 pieces or 1 drum = 208 L. Buy in the large unit, sell in the small one, and stock stays right, even for quantities like 1.5 m of hose or 3.5 L of oil.

How are suppliers and workshop credit handled?

Most parts shops buy on credit from wholesalers and sell on credit to workshops. RMS keeps both sides.

With Pro, purchase orders can be placed, received in parts and closed, and buying on credit adds to the supplier’s ledger. Pay suppliers from their ledger, and return faulty parts with a printed debit note. The reorder list shows everything at or below its reorder point by usual supplier and can fill a purchase order in one click.

On the selling side, each workshop has a credit limit and an account statement. Receivables show who owes the most and, on Pro, how old the dues are.

Start with your own parts list

Import your existing list from a CSV file, including part numbers and racks. RMS runs offline on your own computer, in your own currency. Try every Pro feature free for 14 days, with no card needed.

Screens for spare parts shops

Purchase order form with supplier, items, quantities and costs
Purchase order. Orders received in parts, on credit, with the supplier's ledger.
Stock list with quantities, reorder points and low-stock items highlighted
Stock list. Stock in every warehouse, with low-stock and below-zero items flagged.
Customer account statement with bills, payments and running balance
Customer account statement. Every credit bill and payment with a running balance and ageing.
A5 invoice with the shop's details, customer, vehicle, items and totals
A5 invoice. A4, A5 or A6 invoices with your logo, tagline and footer.

Questions shop owners ask

Can I search a part by OEM number and by alternate numbers?

Yes. A part can carry its OEM, part and alternate numbers, and typing any of them in the item box finds it, with the rack shown in the suggestions.

Can RMS show which parts fit a certain car?

Yes. Each part can list the vehicles it fits by make, model and year. Filter Products by vehicle, or at the counter tick Only parts for the customer's vehicle.

Can I buy in boxes and sell single pieces, or sell fluids and hose loose?

Yes. Set units with conversions such as 1 box = 10 pieces, buy oil and coolant by the drum and sell it by the litre, or sell hose and cable by the metre or foot.

Can I buy from suppliers on credit and see what I owe?

Yes, with Pro. Purchases on credit add to the supplier's ledger, and you pay from there. Purchase orders can be received in parts.

Can workshops and mechanics buy on credit from my shop?

Yes. Give each customer a credit limit, put bills on account with a promised date, and see who owes the most on the receivables list.

Can I import my existing parts list?

Yes. Import a CSV with code, name, part number, rack location, prices and more. RMS shows new and updated rows and any problem lines before anything is saved.

Other shops RMS is made for

Oil changeTyre shopAuto workshopCar washBike shop

Try RMS in your spare parts shop

Every Pro feature, no card needed. Keep it from USD 39 a year or pay once for life.

14-day trial · Windows, macOS, Linux · Works offline

Download free trial