What Is an Account Balance?

An account balance is the amount of money present in a financial repository, such as a savings or checking account, at any given moment. The account balance is always the net amount after factoring in all debits and credits. An account balance that falls below zero represents a net debt—for example, when there is an overdraft on a checking account. For financial accounts that have recurring bills, such as an electric bill or a mortgage, an account balance may also reflect an amount owed.

Understanding an Account Balance

Your account balance shows your total assets minus total liabilities. Sometimes this can be referred to as your net worth or total wealth because it subtracts any debts or obligations from positive sums. For specific accounts at a financial institution, such as a checking account or a brokerage account, your account balance will reflect the current sum of funds or value of that account. For investments or other risky assets, your account balance will tend to change over time as security prices rise and fall in the market.

Many other financial accounts also have an account balance. Everything from a utility bill to a mortgage account needs to show you the balance of the account. For financial accounts that have recurring bills, such as a water bill, your account balance usually shows the amount owed. An account balance can also refer to the total amount of money you owe to a third party, such as a credit card company, utility company, mortgage banker, or another type of lender or creditor.

In banking, the account balance is the amount of money you have available in your checking or savings account. Your account balance is the net amount available to you after all deposits and credits have been balanced with any charges or debits. Sometimes your account balance does not reflect the most accurate representation of your available funds, due to pending transactions or checks that have not been processed.

Examples of Account Balances

In the case of a credit card, you may have made various purchases of $100, $50, and $25 and returned another item costing $10. The account balance includes the purchases made, which total $175, but also the item returned for $10. The net of the debits and credits is $165, or $175 minus $10, and that amount is your account balance.

In the case of a checking account, if your starting balance is $500, and you received a check for $1,500 and also wrote a check or scheduled an automatic payment for $750, then your account balance might show $2,000 immediately, depending on the banking establishment. However, the true account balance is $1,250. It is important to keep track of account balances by recording every credit and debit and then reconciling your calculated balance with the bank statement balance each month.

Account Balance vs. Available Credit

For credit cards, account balances are the total amount of debt owed at the start of the statement date. Your account balance on a credit card also includes any debt rolled over from previous months, which may have accrued interest charges. Available credit is the term used alongside the account balance to indicate how much of the credit line you have left to spend.

For some bank accounts, deposits may not clear in whole or in part immediately, taking up to a few business days to show up in your account. In such situations the bank will usually indicate to you the current available balance alongside the unavailable amount that is waiting to clear.

What Is Accelerated Depreciation?

Accelerated depreciation is any method of depreciation used for accounting or income tax purposes that allows greater depreciation expenses in the early years of the life of an asset. Accelerated depreciation methods, such as double-declining balance (DDB), means there will be higher depreciation expenses in the first few years and lower expenses as the asset ages. This is unlike the straight-line depreciation method, which spreads the cost evenly over the life of an asset.

Understanding Accelerated Depreciation

Accelerated depreciation methods tend to align the recognized rate of an asset’s depreciation with its actual use, although this isn’t technically required. This alignment tends to occur because an asset is most heavily used when it’s new, functional, and most efficient. 

Because this tends to occur at the beginning of the asset’s life, the rationale behind an accelerated method of depreciation is that it appropriately matches how the underlying asset is used. As an asset age, it is not used as heavily, since it is slowly phased out for newer assets.

Special Considerations

Using an accelerated depreciation method has financial reporting implications. Because depreciation is accelerated, expenses are higher in earlier periods compared to later periods. Companies may utilize this strategy for taxation purposes, as an accelerated depreciation method will result in a deferment of tax liabilities since income is lower in earlier periods.

Alternatively, public companies tend to shy away from accelerated depreciation methods, as net income is reduced in the short-term.

Types of Accelerated Depreciation Methods

Double-Declining Balance Method  

The double-declining balance (DDB) method is an accelerated depreciation method. After taking the reciprocal of the useful life of the asset and doubling it, this rate is applied to the depreciable base—also known as the book value, for the remainder of the asset’s expected life.

For example, an asset with a useful life of five years would have a reciprocal value of 1/5 or 20%. Double the rate, or 40%, is applied to the asset’s current book value for depreciation. Although the rate remains constant, the dollar value will decrease over time because the rate is multiplied by a smaller depreciable base each period.

Sum of the Years’ Digits (SYD)

The sum-of-the-years’-digits (SYD) method also allows for accelerated depreciation. To start, combine all the digits of the expected life of the asset. For example, an asset with a five-year life would have a base of the sum-of-the-digits one through five, or 1 + 2 + 3 + 4 + 5 = 15. 

In the first depreciation year, 5/15 of the depreciable base would be depreciated. In the second year, only 4/15 of the depreciable base would be depreciated. This continues until year five depreciates the remaining 1/15 of the base.

What Is Absolute Advantage?

Absolute advantage is the ability of an individual, company, region, or country to produce a greater quantity of a good or service with the same quantity of inputs per unit of time, or to produce the same quantity of a good or service per unit of time using a lesser quantity of inputs, than its competitors.

Absolute advantage can be accomplished by creating the good or service at a lower absolute cost per unit using a smaller number of inputs, or by a more efficient process.

Understanding Absolute Advantage

The concept of absolute advantage was developed by 18th-century economist Adam Smith in his book The Wealth of Nations to show how countries can gain from trade by specializing in producing and exporting the goods that they can produce more efficiently than other countries. Countries with an absolute advantage can decide to specialize in producing and selling a specific good or service and use the generated funds to purchase goods and services from other countries.

Smith argued that specializing in the products that they each have an absolute advantage in and then trading the products can make all countries better off, as long as they each have at least one product for which they hold an absolute advantage over other nations.

Absolute advantage explains why it makes sense for individuals, businesses, and countries to trade with each other. Since each has advantages in producing certain goods and services, both entities can benefit from the exchange.

This mutual gain from trade forms the basis of Smith’s argument that specialization, the division of labor, and subsequent trade lead to an overall increase in prosperity from which all can benefit. This, Smith believed, was the root source of the eponymous “Wealth of Nations.”

Absolute Advantage vs. Comparative Advantage

Absolute advantage can be contrasted with comparative advantage, which is when a producer has a lower opportunity cost to produce a good or service than another producer. An opportunity cost is the potential benefits an individual, investor, or business misses out on when choosing one alternative over another.

Absolute advantage leads to unambiguous gains from specialization and trade only in cases where each producer has an absolute advantage in producing some good. If a producer lacks any absolute advantage, then Adam Smith’s argument would not necessarily apply.

However, the producer and its trading partners might still be able to realize gains from trade if they can specialize based on their respective comparative advantages instead. In his book On the Principles of Political Economy and Taxation, David Ricardo argued that even if a country has an absolute advantage over trading many kinds of goods, it can still benefit by trading with other countries if that have different comparative advantages.

Assumptions of the Theory of Absolute Advantage

Both Smith’s theory of absolute advantage, and Ricardo’s theory of comparative advantage, rely on certain assumptions and simplifications in order to explain the benefits of trade.

Barriers to Trade

Both theories assume that there are no barriers to trade. They do not account for any costs of shipping or additional tariffs that a country might raise on another’s imported goods. In the real world, though, shipping costs impact how likely both the importer and exporter are to engage in trade. Countries can also leverage tariffs to create advantages for themselves or disadvantages for competitors.

Factors of Production

Both theories also assume that the factors of production are immobile. In these models, workers and businesses do not relocate in search of better opportunities. This assumption was realistic in the 1700s.

In modern trade, however, globalization has now made it easy for companies to move their factories abroad. It has also increased the rate of immigration, which impacts a country’s available workforce. In some industries, businesses will work with governments to create immigration opportunities for workers that are essential to their business operations.

Consistency and Scale

More crucially, these theories both assume that a country’s absolute advantage is constant and scales equally. In other words, it assumes that producing a small number of goods has the same per-unit cost as a larger number and that countries are unable to change their absolute advantages.

In reality, countries often make strategic investments to create greater advantages in certain industries. Absolute advantage can also change for reasons other than investment. Natural disasters, for example, can destroy farmland, factories, and other factors of production.

Pros and Cons of Absolute Advantage

One advantage of the theory of absolute advantage is its simplicity: The theory provides an elegant explanation of the benefits of trade, showing how countries can benefit by focusing on their absolute advantages.

However, the theory of comparative advantage does not fully explain why nations benefit from trade. This explanation would later fall to Ricardo’s theory of comparative advantage: Even if one country has an absolute advantage in both types of goods, it will still be better off through trade. In other words, if one country can produce all goods more cheaply than its trading partners, it will still benefit by trading with other countries.

Also, as explained earlier, the theory also assumes that absolute advantages are static—a country cannot change its absolute advantages, and they do not become more efficient with scale. Actual experience has shown this to be untrue: Many countries have successfully created an absolute advantage by investing in strategic industries.

In fact, the theory has been used to justify exploitative economic policies in the postcolonial era. Reasoning that all countries should focus on their advantages, major bodies like the World Bank and IMF have often pressured developing countries to focus on agricultural exports, rather than industrialization. As a result, many of these countries remain at a low level of economic development.

Example of Absolute Advantage

Consider two hypothetical countries, Atlantica and Pacifica, with equivalent populations and resource endowments, with each producing two products: guns and bacon. Each year, Atlantica can produce either 12 tubs of butter or six slabs of bacon, while Pacifica can produce either six tubs of butter or 12 slabs of bacon.

Each country needs a minimum of four tubs of butter and four slabs of bacon to survive. In a state of autarky, producing solely on their own for their own needs, Atlantica can spend one-third of the year making butter and two-thirds of the year making bacon, for a total of four tubs of butter and four slabs of bacon.

Pacifica can spend one-third of the year making bacon and two-thirds making butter to produce the same: four tubs of butter and four slabs of bacon. This leaves each country at the brink of survival, with barely enough butter and bacon to go around. However, note that Atlantica has an absolute advantage in producing butter and Pacifica has an absolute advantage in producing bacon.

If each country were to specialize in their absolute advantage, Atlantica could make 12 tubs of butter and no bacon in a year, while Pacifica makes no butter and 12 slabs of bacon. By specializing, the two countries divide the tasks of their labor between them.

If they then trade six tubs of butter for six slabs of bacon, each country would then have six of each. Both countries would now be better off than before, because each would have six tubs of butter and six slabs of bacon, as opposed to four of each good which they could produce on their own.

The Bottom Line

The theory of absolute advantage represents Adam Smith’s explanation of why countries benefit from trade, by exporting goods where they have an absolute advantage and importing other goods. While the theory is an elegant and simple illustration of the benefits of trade, it did not fully explain the benefits of international trade. That would later fall to David Ricardo’s theory of comparative advantages.

What Is an Abnormal Return?

An abnormal return describes the unusually large profits or losses generated by a given investment or portfolio over a specified period. The performance diverges from the investments’ expected, or anticipated, rate of return (RoR)—the estimated risk-adjusted return based on an asset pricing model, or using a long-run historical average or multiple valuation techniques.

Returns that are abnormal may simply be anomalous or they may point to something more nefarious such as fraud or manipulation. Abnormal returns should not be confused with “alpha” or excess returns earned by actively managed investments.

Understanding Abnormal Returns

Abnormal returns are essential in determining a security or portfolio’s risk-adjusted performance when compared to the overall market or a benchmark index. Abnormal returns could help to identify a portfolio manager’s skill on a risk-adjusted basis. It will also illustrate whether investors received adequate compensation for the amount of investment risk assumed.

An abnormal return can be either positive or negative. The figure is merely a summary of how the actual returns differ from the predicted yield. For example, earning 30% in a mutual fund that is expected to average 10% per year would create a positive abnormal return of 20%. If, on the other hand, in this same example, the actual return was 5%, this would generate a negative abnormal return of 5%.

Cumulative Abnormal Return (CAR)

Cumulative abnormal return (CAR) is the total of all abnormal returns. Usually, the calculation of cumulative abnormal return happens over a small window of time, often only days. This short duration is because evidence has shown that compounding daily abnormal returns can create bias in the results.

Cumulative abnormal return (CAR) is used to measure the effect lawsuits, buyouts, and other events have on stock prices and is also useful for determining the accuracy of asset pricing models in predicting the expected performance.

The capital asset pricing model (CAPM) is a framework used to calculate a security or portfolio’s expected return based on the risk-free rate of return, beta, and the expected market return. After the calculation of a security or portfolio’s expected return, the estimate for the abnormal return is calculated by subtracting the expected return from the realized return.

Example of Abnormal Returns

An investor holds a portfolio of securities and wishes to calculate the portfolio’s abnormal return during the previous year. Assume that the risk-free rate of return is 2% and the benchmark index has an expected return of 15%.

The investor’s portfolio returned 25% and had a beta of 1.25 when measured against the benchmark index. Therefore, given the amount of risk assumed, the portfolio should have returned 18.25%, or (2% + 1.25 x (15% – 2%)). Consequently, the abnormal return during the previous year was 6.75% or 25 – 18.25%.

The same calculations can be helpful for a stock holding. For example, stock ABC returned 9% and had a beta of 2, when measured against its benchmark index. Consider that the risk-free rate of return is 5% and the benchmark index has an expected return of 12%. Based on the CAPM, stock ABC has an expected return of 19%. Therefore, stock ABC had an abnormal return of -10% and underperformed the market during this period.