# Inventory costing FIFO method

**URL:** <https://forum.manager.io/t/inventory-costing-fifo-method/37175>\
**Category:** Uncategorized\
**Created:** [September 24, 2021, 5:35pm UTC](https://forum.manager.io/t/inventory-costing-fifo-method/37175 "2021-09-24T17:35:05Z")\
**Posts on this page:** 1\
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**Author:** ![lubos](https://sea1.discourse-cdn.com/flex019/user_avatar/forum.manager.io/lubos/32/62798_2.png) [@lubos](https://forum.manager.io/u/lubos)\
**Post date:** [September 24, 2021, 8:52pm UTC](https://forum.manager.io/t/inventory-costing-fifo-method/37175/2 "2021-09-24T20:52:10Z")

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- FIFO and LIFO cannot be implemented because you can have several inventory transactions on the same day with different purchase price and Manager would not be able to sort them within the day as it doesn’t store time of the transaction. And for most transactions, time of transaction is not even known nor relevant. Perpetual weighted average method elegantly solves this problem as it doesn’t rely on time of transaction, just a date.
- Straight-line and other depreciation methods are going to be implemented.

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