The cost of materials will normally bederived from suppliers’ invoices but the value of internal issues from storesto the user (production) department need to be calculated.
The methods looked at here are:
FIFO (First in, first out) – assumes that issues will be made based on the oldest prices leaving the more recent pricesin stores. FIFO is acceptable by HMRC and adheres to IAS2 Inventories.
LIFO (Last in, first out) – assumes that issues will be made based on the newest prices leaving the oldest prices instores. LIFO should only be used within an organisation asit does not adhere to IAS2.
AVCO (weighted average) – assumes that issues will be made based on the average cost per unit of the items in stores.
The data being used to demonstrate these techniques is:
| Date | Receipts | Issues | Balance | |||||
| Qty | Per unit | Value | Qty | Per unit | Value | Qty | Value | |
| 01/08 | 150 | $150 | ||||||
| 03/08 | 200 | $1.20 | ||||||
| 09/08 | 250 | |||||||
| 13/08 | 250 | $1.30 | ||||||
| 16/08 | 200 | |||||||

