Book Value

What Is Book Value?

Book value is the net worth of a business as recorded on its balance sheet. It is calculated by subtracting total liabilities from total assets — what the business owns minus what it owes. The result represents the accounting value of the owners' equity at a point in time.

Book value is sometimes called net book value, net asset value, or owners' equity. All of these terms refer to the same thing: the residual claim that owners have on the assets of the business after all debts are paid.

For most small businesses, book value is not what the business would actually sell for. A profitable business with strong cash flow and loyal customers is worth more than its book value. A business with deteriorating assets and declining revenue may be worth less. Book value is a starting point for understanding what is on the balance sheet — not a substitute for a full business valuation.

The Formula

Book Value = Total Assets - Total Liabilities

What Goes Into Total Assets?

Assets are everything the business owns that has economic value. They are typically broken into two categories:

Current assets are those expected to be converted to cash within one year. These include cash and cash equivalents, accounts receivable, inventory, prepaid expenses, and short-term investments.

Non-current assets are long-term in nature. These include property and equipment (net of accumulated depreciation), vehicles, heavy equipment, leasehold improvements, intangible assets such as patents or trademarks, and long-term investments.

For contractors, the largest non-current assets are typically vehicles and equipment. These appear on the balance sheet at their original cost minus accumulated depreciation — which may be significantly lower than their actual market value, particularly for well-maintained equipment.

What Goes Into Total Liabilities?

Liabilities are everything the business owes to outside parties. They are also broken into two categories:

Current liabilities are due within one year. These include accounts payable, accrued wages, accrued taxes, short-term lines of credit, and the current portion of long-term debt.

Non-current liabilities are due beyond one year. These include long-term loans, equipment financing, and any other long-term obligations.

A Worked Example

A roofing contractor has the following balance sheet at year end:

Assets:

• Cash: $85,000

• Accounts receivable: $210,000

• Inventory and materials: $38,000

• Prepaid expenses: $12,000

• Vehicles and equipment (net of depreciation): $320,000

• Total assets: $665,000

Liabilities:

• Accounts payable: $74,000

• Accrued wages and taxes: $28,000

• Current portion of long-term debt: $45,000

• Long-term equipment loans: $180,000

• Total liabilities: $327,000

Book Value = $665,000 - $327,000 = $338,000

This contractor's book value is $338,000. That is the accounting net worth of the business at this point in time.

Book Value vs. Market Value

Book value and market value diverge for several reasons, and understanding the gap tells you something important about your business.

Appreciated assets. Equipment, real estate, and vehicles recorded at depreciated cost on the balance sheet may be worth significantly more at current market prices. If you bought a piece of equipment five years ago for $200,000 and it is now on the books at $80,000 net of depreciation, but it would sell today for $130,000, there is $50,000 of unrealized value not reflected in book value.

Goodwill and intangibles. A profitable business with strong customer relationships, a skilled workforce, and a recognized reputation in its market is worth more than the sum of its tangible assets. That premium — goodwill — does not appear on the balance sheet of most small businesses unless it was acquired through a purchase transaction.

Earnings power. The most important driver of business value for a going concern is its ability to generate cash flow in the future. A business earning $500,000 per year in EBITDA is worth far more than its book value in almost every case, because a buyer is paying for that earnings stream — not for the assets on the balance sheet.

Understated liabilities. Accrued PTO, potential warranty claims, or contingent liabilities not yet recorded can make book value appear higher than it really is.

When Book Value Matters Most

While book value is rarely the primary driver of a going concern business sale, it matters more in certain situations.

Asset-heavy businesses. Contractors with significant equipment fleets, real estate, or material inventory may find that book value — particularly adjusted book value using market prices rather than depreciated cost — is a meaningful floor for business value.

Distressed or liquidation scenarios. If a business is being wound down rather than sold as a going concern, book value (adjusted for actual market values of assets) is the most relevant measure of what owners would recover.

Lender and surety analysis. Banks and surety companies use balance sheet net worth as a key measure of financial strength. A contractor seeking bonding capacity or a line of credit needs to understand and actively manage their book value.

Adjusted Book Value

For a more accurate picture, adjusted book value replaces the depreciated cost of assets with their current market value. This is particularly relevant for contractors whose equipment may be worth significantly more or less than its book value. The calculator below allows you to enter both book values and market value adjustments for each asset category.