Help on job costing

Ok here is my problem. I am new at my company and do not know why we do what we do.

I have job A and the total cost is $100.00 and it goes into Inventory correctly. Job B takes that finished part as a raw material and goes to a plater that charges $10.00. Part B goes into inventory as $110.00. When we issue part B to a job the cost comes into the new job at 2-3 times the price in inventory for Part B.

I have looked at part transaction history and production detail report. any help would be greatly appreciated.

Are you standard cost on part B?

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Do you have Setup costs? If so, have you set a Costing Lot Size?

All of our cost are set average costing. We do not use costing lot size.

Did you double check the cost when the transaction happened? There might have been a typo or price increase since it was put in stock. When an average price changes it updates all of the costs for parts in inventory.