What Is Book Value?

Carrying amount, how it changes, and how it is used to calculate gains and losses on disposal.

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Quick answerBook value (carrying amount) of an asset is its cost minus the accumulated depreciation to date. It is the value shown in the accounting records, and it is usually different from the asset’s market value.
Book value = Cost − Accumulated depreciation
Also calledCarrying amount, net book value
Used to findProfit or loss on disposal
TopicFinancial accounting · Non-current assets

Book value in plain English

Book value tells you how much of an asset’s cost has not yet been charged to expense through depreciation. It falls each year. It reflects accounting history, not what the asset could sell for today.

Worked example

Equipment cost 12,000 and has accumulated depreciation of 4,000.

Book value = 12,000 − 4,000 = 8,000.

Disposal: if the equipment is sold for 9,000, profit on disposal = proceeds − book value = 9,000 − 8,000 = 1,000 gain. If it were sold for 7,000, there would be a 1,000 loss.

Common mistakes
  • Assuming book value equals market value. They are usually different.
  • Calculating the gain or loss on disposal from cost instead of book value.

Frequently asked questions

What is the difference between book value and market value?

Book value is cost less accumulated depreciation. Market value is what the asset could be sold for now.

How do you calculate the profit or loss on disposal?

Proceeds minus book value. A positive result is a gain and a negative result is a loss.

Can book value fall below the residual value?

No. Depreciation stops when the book value reaches the residual value.

Keep learning

This page is for general learning. Accounting rules vary by country and standard.