Parts Tracking & Invoicing
OwlGMS garage parts tracking software links every part to the job it was used on, tracks stock levels across your workshop, and generates invoices with a single click. From the moment a part is added to a job card to the moment the customer pays, every transaction is recorded and traceable. No more guessing where a part went or manually tallying up invoices at the end of the day.
Parts Management That Actually Works
Most garages track parts using a combination of memory, handwritten notes, and a spreadsheet that someone updates when they remember. The result is phantom stock (the system says you have three oil filters, but the shelf is empty), mystery usage (who used the last set of brake pads and on which job?), and end-of-month confusion when your accounts do not add up.
OwlGMS solves this by making parts tracking inseparable from job tracking. When a technician adds a part to a digital job card, the stock level decreases automatically. When a new delivery arrives, you book it in and the stock level increases. At any point, you can check what is on the shelf and what has been used, and the numbers match reality because every movement is captured at the point it happens.
The parts catalogue in OwlGMS supports part numbers, categories, make and model compatibility, cost prices, sell prices, and bay locations. With 193 parts or 1,930 parts, the search and filter system lets you find what you need in seconds. You can filter by category, vehicle make, or even the physical bay where a part is stored to help technicians locate items quickly.
Parts & Invoicing Features
Complete financial traceability from purchase order to customer payment.
Stock Level Tracking
Real-time stock levels that update automatically when parts are used on jobs or received from suppliers. Set minimum stock thresholds and receive alerts when popular items are running low so you never run out mid-job.
Parts Linked to Jobs
Every part used is linked to the specific job card and vehicle. If a customer queries a charge or a part fails under warranty, you can trace exactly which part was fitted, when, and by whom. This level of traceability is essential for dispute resolution.
One-Click Invoicing
Generate a professional invoice from the job card with one click. Parts, labour, and any additional charges are already recorded, so the invoice populates automatically. No re-entering data, no calculation errors, no delays.
Payment Logging
Record payments against invoices as they come in -- whether by card, cash, bank transfer, or finance. See outstanding balances at a glance and chase overdue invoices with full visibility of what has and has not been paid.
Margin Visibility
Every part records both cost price and sell price. OwlGMS calculates your margin on every job so you can see profitability at a glance. Identify which job types are most profitable and where you might be undercharging.
Catalogue Organisation
Organise parts by category (brakes, filters, suspension, electrical), make and model compatibility, and physical storage location. Technicians can find the right part quickly, even if they do not know the part number off the top of their head.
From Job Card to Paid Invoice
The invoicing workflow in OwlGMS is designed to eliminate the gap between completing a job and getting paid. In many garages, invoicing is a separate step that happens after the fact -- often at the end of the day or even the end of the week. Details get missed, parts are forgotten, and the invoice understates the actual work done. This leakage adds up over time.
With OwlGMS, invoicing is not a separate step. It is the natural conclusion of the job card workflow. As the technician works, they log parts and labour directly on the card. When the job is marked complete, the front desk can generate an invoice that includes every part used, every hour of labour, and any additional charges. The customer receives an accurate, itemised invoice within minutes of collection.
Invoices are branded with your garage name, address, and VAT number. They can be emailed to the customer, printed on the spot, or both. Payment can be recorded immediately if the customer pays at collection, or the invoice can be marked as outstanding for trade accounts or finance arrangements.
Financial Reporting
Because every part movement and every payment flows through OwlGMS, your financial reporting is built on accurate, real-time data. You can pull reports on total revenue, outstanding invoices, parts costs, labour revenue, and profit margins for any time period. These reports are invaluable for VAT returns, management accounts, and business planning.
For garages that use external accounting software, OwlGMS data can be exported in standard formats. This means your bookkeeper or accountant can reconcile transactions without chasing paper invoices or deciphering handwritten records. The time saved on administrative tasks alone justifies the investment for many workshops.
Built for How Garages Actually Work
OwlGMS parts tracking is not a generic inventory system adapted for garages. It is built specifically for the way UK workshops operate. Parts are linked to vehicle makes and models, so when you search for brake pads, you see only the ones that fit the vehicle on the ramp. Cost and sell prices are maintained per part, so margins are calculated automatically.
The workshop tracking board shows when a job is waiting for parts, so you can prioritise orders and avoid bays sitting idle. When parts arrive, booking them in updates the job card status automatically, and the technician knows they can continue.
Combined with customer approvals, the parts system ensures that customers see exactly which parts are being used and what they cost. This transparency reinforces trust and reduces billing queries after the fact.
Take control of parts and cash flow
Book a free 20-minute demo and see how OwlGMS links parts, jobs, and invoices into one seamless workflow.
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