A phone charger you bought for $2 six months ago now costs $3 to restock. If the shop is still pricing repairs off that old $2 number, every one of those repairs is quietly losing money, and nobody notices until the shelf is empty and the math doesn't add up.
Spreadsheets and memory don't track cost, they track a snapshot
Most repair shops price parts off whatever the technician remembers paying, or a spreadsheet column that gets updated whenever someone has time. Neither tracks the actual purchase history. When a part comes from three different batches at three different prices, a single "cost" field just picks one number and hopes it's close enough.
Parts are one leak among several; running the shop on WhatsApp and a notebook costs money in the same quiet way.
FIFO turns a guess into an actual number
First-in-first-out costing assigns the price of the oldest batch still in stock to the next unit sold, and moves to the next batch once that one runs out. It's not a new idea, accountants have used it for decades, but a repair shop rarely has the tooling to apply it per part, per batch, automatically. Done by hand, it's too much bookkeeping for a five-minute repair.
What actually helps
Inventory and point-of-sale in the same system, so every part sold pulls its real cost from the batch it came out of, not a static field someone forgot to update. The technician still just picks the part and closes the ticket; the margin comes out correct without anyone doing extra math.
Accurate part costs also make the customer-facing price better; here is how Mobile Master builds a repair quote from the shop's own history instead of a guess.
Once a second branch opens, parts stock and costs have to stay separate per location, which we covered in why data isolation matters for multi-location repair shops.
Frequently asked questions
Why do repair shops lose money on spare parts pricing?
Because repairs are priced from an old cost. A charger bought for $2 six months ago may now cost $3 to restock, and if repairs are still priced off the $2 figure, each one quietly loses money. Memory and spreadsheets hold a snapshot of cost, not the actual purchase history.
What is FIFO costing for repair shop parts?
First-in-first-out costing assigns the price of the oldest batch still in stock to the next unit sold, then moves to the next batch once that one runs out. Accountants have used it for decades, but done by hand it is too much bookkeeping for a five-minute repair, so it needs to be automatic.
How can a repair shop get accurate part costs without extra work?
Keep inventory and point-of-sale in the same system. Then every part sold pulls its real cost from the batch it came from, not from a static field someone forgot to update. The technician still just picks the part and closes the ticket, and the margin comes out correct.
