📊 What is WAC (Weighted Average Cost)?
WAC stands for Weighted Average Cost
It’s an accounting method used to track your parts costs more accurately over time.
Instead of using the last purchase price or a fixed cost, WAC averages the cost of all units you buy. Every time you receive more stock at a different price, EasyTruckShop recalculates the average cost per unit automatically.
✔️ Why Use WAC?
Keeps your parts profit margins accurate, especially when vendor prices change often.
Prevents manual cost mistakes when you buy the same part at different prices.
Ensures you’re not under- or over-charging on parts sales or repairs.
Example:
You bought 10 filters at $5.00 each.
Later you buy 10 more at $7.00 each.
Your WAC for those filters is now $6.00 per filter (total cost divided by total units).
⚙️ How WAC Works in EasyTruckShop
1️⃣ When you receive a PO
If you’re using WAC, every time you receive more units of a part with a different purchase cost, ETS will automatically update the average cost for that part.
2️⃣ The new WAC applies
That updated average cost is what shows in your inventory reports and is used to calculate sales price if you’re using price matrices or markup rules.
3️⃣ No manual math
EasyTruckShop handles the calculation and applies it consistently.
✅ Good to Know
WAC only works when you receive stock properly through POs or when initially creating a part (this keeps your costs accurate.)
If you manually adjust quantities without updating costs, your WAC may be off (always receive through the correct workflow!)
WAC is great for shops with regular price changes from vendors.
💡 Tip: If you have questions about your parts costing, ask your EasyTruckShop support rep. We can help you set it up and verify it’s working correctly.