Book value

Book value is the amount an asset is recorded for on the balance sheet in Financial Accounting I. It usually equals original cost minus accumulated depreciation and any impairment.

Last updated July 2026

What is the book value?

Book value is the amount an asset is carried at on the balance sheet in Financial Accounting I. For most long-term assets, you start with the asset’s original cost and subtract accumulated depreciation, and if needed, any impairment losses. That gives you the asset’s current accounting value, not the price someone would necessarily pay for it today.

This is why book value is really a record-keeping number, not a market guess. A delivery truck, machine, or building may have a book value that keeps falling each year because the accounting system spreads the cost over time through depreciation. If the asset loses value suddenly because of damage, obsolescence, or another issue, impairment can push the book value down even faster.

In Financial Accounting I, you usually see book value when you are working with the accounting equation, the balance sheet, or adjusting entries. It shows how much of an asset’s cost has not yet been expensed. The company is not saying, “This is what we could sell it for.” It is saying, “This is the remaining amount still on our books.”

A simple example makes the idea click. Suppose equipment cost $50,000, and the company has recorded $18,000 of accumulated depreciation. The book value is $32,000. If the equipment is later impaired by $5,000, the new book value becomes $27,000. That lower number is what appears in the accounting records until more depreciation or another adjustment changes it.

Book value also shows up in bond accounting, but in a slightly different way. For bonds, the book value is tied to face value plus any unamortized premium or minus any unamortized discount. So the same phrase can apply to different assets, but the core idea stays the same: book value is the amount the accounting records say the item is worth right now.

Why the book value matters in Financial Accounting I

Book value shows you how Financial Accounting I turns a real-world asset into an accounting number that can be reported consistently. Without it, balance sheets would only show what a company paid years ago, which would not reflect the asset’s use over time or losses in value that need to be recognized.

You use this term any time you trace how a long-term asset changes after purchase. It connects directly to depreciation methods, adjusting entries, and impairment decisions. If you know book value, you can explain why an asset’s balance-sheet amount is lower this year than it was last year, even when the company has not sold the asset.

It also sharpens your comparison skills. A lot of confusion in class comes from mixing up book value with market value. Book value comes from accounting rules and the company’s records. Market value comes from what someone would actually pay in the market. Those can be close, but they often are not.

For exam questions, book value is usually the number you calculate or interpret after reading a scenario. If the problem gives you cost, depreciation, and impairment, book value is the final accounting answer. If it asks whether a balance sheet amount should go up, down, or stay the same after an event, book value is often the number you are tracking.

How the book value connects across the course

Accumulated Depreciation

Accumulated depreciation is the total depreciation recorded so far on a long-term asset. You subtract it from original cost to get book value for most tangible assets, so it is the main number that lowers book value over time. If you forget accumulated depreciation, you will usually overstate the asset on the balance sheet.

Market Value

Market value is what an asset could sell for right now, while book value is what the accounting records show. They can be very different, especially for older equipment, land, or a company that owns assets for a long time. Confusing the two is a common mistake in Financial Accounting I.

Impairment Loss

An impairment loss happens when an asset’s book value is no longer recoverable and has to be written down. That loss reduces the asset’s recorded amount immediately instead of slowly through depreciation. When a problem asks about a sudden drop in value, impairment is the adjustment that changes book value.

Amortization

Amortization works like depreciation, but it is used for intangible assets and certain other items. It reduces the carrying amount of those assets over time, which changes book value in the same basic way. If the asset is not physical, amortization may be the expense method that explains its book value.

Is the book value on the Financial Accounting I exam?

A quiz or problem set will usually give you an asset’s cost, accumulated depreciation, and maybe an impairment amount, then ask for book value. Your job is to subtract in the right order and label the result correctly. If the question switches to bonds, you may need to adjust face value for premium or discount instead of using depreciation.

You might also see short-answer items that ask you to explain why book value and market value differ. A strong response says book value comes from accounting records and allocation methods, while market value comes from current buying and selling conditions. On a balance sheet question, make sure you report the carrying amount, not the original purchase price.

The book value vs Carrying Value

These terms are often used to mean the same thing in Financial Accounting I, which is why they get mixed up. Some instructors use carrying value for the amount an asset is currently recorded at, while book value is the broader phrase many textbooks use. If your class uses both, check the wording of the chapter and use the one your instructor prefers.

Key things to remember about the book value

  • Book value is the amount an asset is recorded for on the balance sheet after depreciation and any impairment adjustments.

  • For most tangible assets, you find book value by taking original cost and subtracting accumulated depreciation, then subtracting impairment if needed.

  • Book value is not the same as market value, because market value depends on current buying and selling conditions.

  • A lower book value usually means the asset has been used longer, has been written down, or both.

  • In Financial Accounting I, book value shows up most often in long-term asset questions, adjusting entries, and balance sheet analysis.

Frequently asked questions about the book value

What is book value in Financial Accounting I?

Book value is the recorded net amount of an asset on the balance sheet. For most assets, it equals original cost minus accumulated depreciation, with any impairment loss subtracted as well. It is an accounting value, not a selling price.

How do you calculate book value?

Start with the asset’s original cost. Subtract accumulated depreciation, and then subtract any impairment loss if the asset has been written down. The result is the book value, also called the carrying amount in many classes.

Is book value the same as market value?

No. Book value comes from the company’s accounting records, while market value is what someone would pay for the asset right now. A machine can have a low book value but still sell for more, or the opposite if it is outdated or damaged.

Why does book value go down over time?

For depreciable assets, book value usually goes down because accumulated depreciation keeps building up each period. If the asset also suffers impairment, the book value can drop even more. That is how accounting matches the asset’s cost to the periods that benefit from it.

Book Value in Financial Accounting I | Fiveable