# AS 28: Cash Generating Unit (CGU)
## Why CGUs Are Necessary
Some assets cannot generate cash flows independently. A microphone used in online teaching is worthless alone — it works only as part of a system (mic + laptop + camera + projector).
When an individual VIU cannot be estimated, the standard requires grouping the assets into the smallest unit that can.
## Definition
A Cash Generating Unit (CGU) is the smallest identifiable group of assets that generates cash inflows from continuing use that are largely independent of cash inflows from other assets or groups.
> A single company can operate multiple CGUs simultaneously.
> Example: Online teaching setup = CGU 1; Offline teaching setup = CGU 2.
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## Impairment Test of a CGU — Four Steps
| Step | Action |
|---|---|
| 1 | Sum the carrying amounts of all assets in the CGU |
| 2 | Determine the Recoverable Amount of the CGU as a whole |
| 3 | Compute Impairment Loss = Total CA − RA (if positive) |
| 4 | Allocate impairment loss to individual assets in proportion to their carrying amounts |
### Allocation Constraint
No individual asset's CA can be reduced below its own individual recoverable amount (if it can be separately determined). Any excess must be reallocated to the remaining assets.