What Is the Average Cost Basis Method?

The average cost basis method is a system of calculating the value of mutual fund positions held in a taxable account to determine the profit or loss for tax reporting. Cost basis represents the initial value of a security or mutual fund that an investor owns.

The average cost is then compared with the price at which the fund shares were sold to determine the gains or losses for tax reporting. The average cost basis is one of many methods that the Internal Revenue Service (IRS) allows investors to use to arrive at the cost of their mutual fund holdings.

Understanding the Average Cost Basis Method

The average cost basis method is commonly used by investors for mutual fund tax reporting. A cost basis method is reported with the brokerage firm where the assets are held. The average cost is calculated by dividing the total amount in dollars invested in a mutual fund position by the number of shares owned. For example, an investor that has $10,000 in an investment and owns 500 shares would have an average cost basis of $20 ($10,000 / 500).

Types of Cost Basis Methods

Although many brokerage firms default to the average cost basis method for mutual funds, there are other methods available.

FIFO

The first in, first out (FIFO) method means that when shares are sold, you must sell the first ones that you acquired first when calculating gains and losses. For example, let’s say an investor owned 50 shares and purchased 20 in January while purchasing 30 shares in April. If the investor sold 30 shares, the 20 in January must be used, and the remaining ten shares sold would come from the second lot purchased in April. Since both the January and April purchases would have been executed at different prices, the tax gain or loss would be impacted by the initial purchase prices in each period.

Also, if an investor has had an investment for more than one year, it would be considered a long-term investment. The IRS applies a lower capital gains tax to long-term investments versus short-term investments, which are securities or funds acquired in less than one year. As a result, the FIFO method would result in lower taxes paid if the investor had sold positions that were more than a year old.

LIFO

The last in first out (LIFO) method is when an investor can sell the most recent shares acquired first followed by the previously acquired shares. The LIFO method works best if an investor wants to hold onto the initial shares purchased, which might be at a lower price relative to the current market price.

High-Cost and Low-Cost Methods

The high-cost method allows investors to sell the shares that have the highest initial purchase price. In other words, the shares that were the most expensive to buy get sold first. A high-cost method is designed to provide investors with the lowest capital gains tax owed. For example, an investor might have a large gain from an investment, but doesn’t want to realize that gain yet, but needs money.

Having a higher cost means the difference between the initial price and the market price, when sold, will result in the smallest gain. Investors might also use the high-cost method if they want to take a capital loss, from a tax standpoint, to offset other gains or income.

Conversely, the low-cost method allows investors to sell the lowest-priced shares first. In other words, the cheapest shares you purchased get sold first. The low-cost method might be chosen if an investor wants to realize a capital gain on an investment.

Choosing a Cost-Basis Method

Once a cost basis method has been chosen for a specific mutual fund, it must remain in effect. Brokerage firms will provide investors with appropriate annual tax documentation on mutual fund sales based on their cost basis method elections.

Investors should consult a tax advisor or financial planner if they are uncertain about the cost basis method that will minimize their tax bill for substantial mutual fund holdings in taxable accounts. The average cost basis method may not always be the optimal method from a taxation point of view. Please note that the cost basis only becomes important if the holdings are in a taxable account, and the investor is considering a partial sale of the holdings.

Specific Identification Method

The specific identification method (also known as specific share identification) allows the investor to choose which shares are sold in order to optimize the tax treatment. For example, let’s say an investor purchases 20 shares in January and 20 shares in February. If the investor later sells 10 shares, they can choose to sell 5 shares from the January lot and 5 shares from the February lot.

Example of Cost Basis Comparisons

Cost basis comparisons can be an important consideration. Let’s say that an investor made the following consecutive fund purchases in a taxable account:

• 1,000 shares at $30 for a total of $30,000
• 1,000 shares at $10 for a total of $10,000
• 1,500 shares at $8 for a total of $12,000

The total amount invested equals $52,000, and the average cost basis is calculated by dividing $52,000 by 3,500 shares. The average cost is $14.86 per share.

Suppose the investor then sells 1,000 shares of the fund at $25 per share. The investor would have a capital gain of $10,140 using the average cost basis method. The gain or loss using average cost basis would be as follows:

• ($25 – $14.86) x 1,000 shares = $10,140.

Results can vary depending on the cost-basis method chosen for tax purposes:

• First in first out: ($25 – $30) x 1,000 shares = – $5,000
• Last in first out: ($25 – $8) x 1,000 = $17,000
• High cost: ($25 – $30) x 1,000 shares = – $5,000
• Low cost: ($25 – $8) x 1,000 = $17,000

From strictly a tax standpoint, the investor would be better off selecting the FIFO method or the high-cost method to calculate the cost basis before selling the shares. These methods would result in no tax on the loss. However, with the average cost basis method, the investor must pay a capital gains tax on the $10,140 in earnings.

Of course, if the investor sold the 1,000 shares using the FIFO method, there’s no guarantee that when the remaining shares are sold that $25 will be the selling price. The stock price could decrease, wiping out most of the capital gains and an opportunity to realize a capital gain would have been lost. As a result, investors must weigh the choice as to whether to take the gain today and pay the capital gains taxes or try to reduce their taxes and risk losing any unrealized gains on their remaining investment.

What Is the Annualized Income Installment Method?

Taxpayers who are self-employed typically pay quarterly installments of their estimated tax in four even amounts as figured by the regular installment method. Additionally, taxpayers should pay estimated taxes if they receive substantial dividends, interest, alimony, or other forms of income that are not subject to income tax withholding.

When a taxpayer has a fluctuating income, it often causes them to underpay on one or more of the quarterly estimates leading to underpayment penalties. The annualized income installment method calculates the taxpayer’s estimated tax installment payments and helps to decrease underpayment and corresponding underpayment penalties related to fluctuating income. Through the use of the annualized income installment method, taxpayers may estimate their taxes based on known information from the beginning of the tax year through the end of the period paid.

How the Annualized Income Installment Method Works

The purpose of the regular installment method is to figure in quarterly tax installments. It divides the annual estimated tax into four equal segments. The resulting payments are appropriate for the quarterly estimated taxes of taxpayers with a steady income, but this does not work as well for taxpayers whose income fluctuates. Some taxpayers may have a hard time finding the cash to pay estimated taxes in slower months.

Consider, for example, taxpayers Jane and John. Each of them owes $100,000 in annual estimated tax. Jane pays her estimated payments in four $25,000 installments per the regular installment method. She evenly earned her income, 25% each quarter, so the quarterly portions paid her estimated tax in full and on time. 

John’s earnings were uneven, with each tax quarter at 0%, 20%, 30%, and 50%, respectively. John may have a difficult time coming up with the cash necessary to make his first and second quarter estimated tax payments when his earnings are low. Using the regular installment method, if John were to pay less estimated tax in the first two quarters and more in the second two quarters, he would owe an underpayment penalty for the first two quarters.

The annualized income installment method allows John to refigure his installments, so they correlate to his income as he earns it. It does so by annualizing John’s installments over four overlapping periods. Each period begins on Jan. 1. The first period ends on March 31, the second ends on May 31, the third on Aug. 31, and the fourth period ends on Dec. 31. Each period includes all the previous periods, with the final period encompassing the entire year. It allows John to estimate his tax payments based on his income to that point in the year.

In this example, we know the exact percentage of John’s annual earnings from each tax quarter. John pays $0 in March, $20,000 in May, $30,000 in August, and $50,000 in December. John now has four installments of different amounts that, when added together, equal his full annual estimated tax of $100,000. John’s refigured installments are now paid on time, his underpayment penalties abated.

IRS Publication 505 has forms, schedules, and worksheets that guide taxpayers desiring to refigure their installments using the annualized income installment method. However, figuring installments this way is complicated and best done on an IRS worksheet by your favorite tax professional.

What Is an Amortizable Bond Premium?

The amortizable bond premium is a tax term that refers to the excess price paid for a bond over and above its face value. Depending on the type of bond, the premium can be tax-deductible and amortized over the life of the bond on a pro-rata basis.

Understanding an Amortizable Bond Premium

A bond premium occurs when the price of the bond has increased in the secondary market due to a drop in market interest rates. A bond sold at a premium to par has a market price that is above the face value amount.

The difference between the bond’s current price (or carrying value) and the bond’s face value is the premium of the bond. For example, a bond that has a face value of $1,000 but is sold for $1,050 has a $50 premium. Over time, as the bond premium approaches maturity, the value of the bond falls until it is at par on the maturity date. The gradual decrease in the value of the bond is called amortization.

Cost Basis

For a bond investor, the premium paid for a bond represents part of the cost basis of the bond, which is important for tax purposes. If the bond pays taxable interest, the bondholder can choose to amortize the premium—that is, use a part of the premium to reduce the amount of interest income included for taxes.

Those who invest in taxable premium bonds typically benefit from amortizing the premium, because the amount amortized can be used to offset the interest income from the bond. This, in turn, will reduce the amount of taxable income the bond generates, and thus any income tax due on it as well. The cost basis of the taxable bond is reduced by the amount of premium amortized each year.

In a case where the bond pays tax-exempt interest, the bond investor must amortize the bond premium. Although this amortized amount is not deductible in determining taxable income, the taxpayer must reduce their basis in the bond by the amortization for the year. The IRS requires that the constant yield method be used to amortize a bond premium every year.

Amortizing Bond Premium With the Constant Yield Method

The constant yield method is used to determine the bond premium amortization for each accrual period. It amortizes a bond premium by multiplying the adjusted basis by the yield at issuance and then subtracting the coupon interest. Or in formula form:

• Accrual = Purchase Basis x (YTM /Accrual periods per year) – Coupon Interest

The first step in calculating the premium amortization is to determine the yield to maturity (YTM), which is the discount rate that equates the present value of all remaining payments to be made on the bond to the basis in the bond.

For example, consider an investor that purchased a bond for $10,150. The bond has a five-year maturity date and a par value of $10,000. It pays a 5% coupon rate semi-annually and has a yield to maturity of 3.5%. Let’s calculate the amortization for the first period and second period.

The First Period

Since this bond makes semi-annual payments, the first period is the first six months after which the first coupon payment is made; the second period is the next six months, after which the investor receives the second coupon payment, and so on. Since we’re assuming a six-month accrual period, the yield and coupon rate will be divided by 2.

Following our example, the yield used to amortize the bond premium is 3.5%/2 = 1.75%, and the coupon payment per period is 5% / 2 x $10,000 = $250. The amortization for period 1 is as follows:

• Accrual_period1 = ($10,150 x 1.75%) – $250
• Accrual_period1 = $177.63 – $250
• Accrual_period1 = -$72.38

The Second Period

The bond’s basis for the second period is the purchase price plus the accrual in the first period—that is, $10,150 – $72.38 = $10,077.62:

• Accrual_period2 = ($10,077.62 x 1.75%) – $250
• Accrual_period2 = $176.36 – $250
• Accrual_period2 = -$73.64

For the remaining eight periods (there are 10 accrual or payment periods for a semi-annual bond with a maturity of five years), use the same structure presented above to calculate the amortizable bond premium.

Intrinsically, a bond purchased at a premium has a negative accrual; in other words, the basis amortizes.

What Is Activity-Based Costing (ABC)?

Activity-based costing (ABC) is a costing method that assigns overhead and indirect costs to related products and services. This accounting method of costing recognizes the relationship between costs, overhead activities, and manufactured products, assigning indirect costs to products less arbitrarily than traditional costing methods. However, some indirect costs, such as management and office staff salaries, are difficult to assign to a product.

How Activity-Based Costing (ABC) Works

Activity-based costing (ABC) is mostly used in the manufacturing industry since it enhances the reliability of cost data, hence producing nearly true costs and better classifying the costs incurred by the company during its production process.

This costing system is used in target costing, product costing, product line profitability analysis, customer profitability analysis, and service pricing. Activity-based costing is used to get a better grasp on costs, allowing companies to form a more appropriate pricing strategy. 

The formula for activity-based costing is the cost pool total divided by cost driver, which yields the cost driver rate. The cost driver rate is used in activity-based costing to calculate the amount of overhead and indirect costs related to a particular activity. 

The ABC calculation is as follows:  

1. Identify all the activities required to create the product. 
2. Divide the activities into cost pools, which includes all the individual costs related to an activity—such as manufacturing. Calculate the total overhead of each cost pool.
3. Assign each cost pool activity cost drivers, such as hours or units. 
4. Calculate the cost driver rate by dividing the total overhead in each cost pool by the total cost drivers. 
5. Divide the total overhead of each cost pool by the total cost drivers to get the cost driver rate. 
6. Multiply the cost driver rate by the number of cost drivers. 

As an activity-based costing example, consider Company ABC that has a $50,000 per year electricity bill. The number of labor hours has a direct impact on the electric bill. For the year, there were 2,500 labor hours worked, which in this example is the cost driver. Calculating the cost driver rate is done by dividing the $50,000 a year electric bill by the 2,500 hours, yielding a cost driver rate of $20. For Product XYZ, the company uses electricity for 10 hours. The overhead costs for the product are $200, or $20 times 10.

Requirements for Activity-Based Costing (ABC)

The ABC system of cost accounting is based on activities, which are any events, units of work, or tasks with a specific goal, such as setting up machines for production, designing products, distributing finished goods, or operating machines. Activities consume overhead resources and are considered cost objects.

Under the ABC system, an activity can also be considered as any transaction or event that is a cost driver. A cost driver, also known as an activity driver, is used to refer to an allocation base. Examples of cost drivers include machine setups, maintenance requests, consumed power, purchase orders, quality inspections, or production orders.

There are two categories of activity measures: transaction drivers, which involves counting how many times an activity occurs, and duration drivers, which measure how long an activity takes to complete.

Unlike traditional cost measurement systems that depend on volume count, such as machine hours and/or direct labor hours to allocate indirect or overhead costs to products, the ABC system classifies five broad levels of activity that are, to a certain extent, unrelated to how many units are produced. These levels include batch-level activity, unit-level activity, customer-level activity, organization-sustaining activity, and product-level activity.

Benefits of Activity-Based Costing (ABC)

Activity-based costing (ABC) enhances the costing process in three ways. First, it expands the number of cost pools that can be used to assemble overhead costs. Instead of accumulating all costs in one company-wide pool, it pools costs by activity. 

Second, it creates new bases for assigning overhead costs to items such that costs are allocated based on the activities that generate costs instead of on volume measures, such as machine hours or direct labor costs. 

Finally, ABC alters the nature of several indirect costs, making costs previously considered indirect—such as depreciation, utilities, or salaries—traceable to certain activities. Alternatively, ABC transfers overhead costs from high-volume products to low-volume products, raising the unit cost of low-volume products.