Model deprecation as an impairment indicator
Why deprecation is an indicator
When a provider announces that a model or endpoint will be withdrawn, an asset built on it faces a hard horizon: continued use will require migration, rebuild or replacement. That is precisely the obsolescence and adverse technological change IAS 36 lists as indicators IAS 36 §12. The announcement, not the withdrawal date, is the trigger, because the impairment indicator exists as soon as the future is known.
Evidencing the review
- The deprecation notice and its effective date, retained as the source event.
- An assessment of whether the asset can be migrated to a successor model and at what cost.
- The recoverable-amount workings prepared in response, with their cash-flow and discount-rate inputs.
- The conclusion and any loss posted, cross-referenced to the roll-forward.
Measuring the write-down
The impairment loss is the amount by which the carrying amount exceeds the recoverable amount, the higher of value in use and fair value less costs of disposal IAS 36 §18. If the asset can be migrated cheaply and continues to earn, recoverable amount may still support much of the carrying value; if it cannot, the write-down may be to a low or nil amount. The test is done on the specifics, not on the fact of the announcement alone.
Partial deprecation
Where only part of a composite asset is affected, for example one model in a pipeline of several, the review focuses on the smallest group of assets that generates largely independent cash flows. Isolating the affected component avoids writing down value that a still-productive part of the asset continues to support, and it keeps the loss proportionate to the obsolescence actually suffered.