Dictionary / Extraordinary Depreciation
What does Extraordinary Depreciation mean in accounting?
Quick definition
Accrual & timingDepreciation caused by unusual wear and tear, unexpected disintegration, obsolescence, or inadequacy beyond that attributable to ordinary loss of physical or service life. This term guides how bookkeepers record, classify, and explain related transactions in routine financial reporting.
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Examples
The flood ends the washer's remaining life
You run a dry cleaner. On April 8 a supply-line burst floods the plant overnight and wrecks a 60-lb washer you bought from an equipment supplier for $16,800. The fixed-asset schedule still shows $7,560 of accumulated depreciation and $9,240 of remaining book value; ordinary April depreciation expense was going to be $280. Extraordinary depreciation is that extra $9,240 of remaining life lost in one night, not the $280 slice. Debit extra depreciation $9,240, credit accumulated depreciation $9,240, stop the recurring $280 in QuickBooks Online or Xero, and confirm the P&L shows the large extra charge while remaining life on the schedule is zero.
A new rule makes the booth obsolete
You run a collision shop. On September 3 the county posts a VOC rule that bans your solvent-based spray booth effective October 1. The booth is a unit from a coatings supplier at $28,400 cost, with $11,600 still on the books and $240 of ordinary monthly depreciation expense. The booth still looks fine, but remaining useful life is gone, so extraordinary depreciation is that extra $11,600 for sudden obsolescence. In QuickBooks Online or Xero, post the extra write-down against accumulated depreciation and stop the $240 recurring entry; do not dump $11,600 into a generic extraordinary expense line, which is a separately disclosed unusual cost, not extra depreciation on a fixed asset.
Why it matters
Extraordinary depreciation is the extra depreciation beyond this period's ordinary depreciation expense: the extra write-down when unusual wear, unexpected breakup, sudden obsolescence, or inadequacy wipes out remaining life that your useful life never assumed. You will not post this most months; it shows up after a specific shock to equipment, not at a routine close. Leave the old monthly slice running and the balance sheet still shows remaining life the asset no longer has, while profit looks too strong. Do not mix this with extraordinary expense, which is any separately disclosed unusual cost, or with ordinary depreciation expense, which is the planned period slice.
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What is Extraordinary Depreciation in bookkeeping?
Depreciation caused by unusual wear and tear, unexpected disintegration, obsolescence, or inadequacy beyond that attributable to ordinary loss of physical or service life.
When should I use Extraordinary Depreciation?
Use Extraordinary Depreciation when the transaction facts match its definition and you need the ledger and financial statements to reflect the correct account and period.
What is a common mistake with Extraordinary Depreciation?
Extraordinary Depreciation is used for extraordinary depreciation entries, while Earned Income covers a related but distinct bookkeeping purpose. Review both terms before posting unusual transactions. A common mistake is applying it by label only instead of checking the underlying transaction details.