The direct material cost is made up of the cost to you for parts and supplies that are
used on specific jobs. Once the list of parts and supplies to be used is developed, a
check with the supplier will give an up-to-date material cost. The shipping and other
handling (storage etc.) costs for the parts should be included in the material cost.
Direct Labor Cost
The direct labor costs include those labor costs identified with a specific service
job. The labor cost involved in providing a service is determined by multiplying the
number of direct labor hours required by the cost per direct labor hour. It is very
important to determine accurately the amount of direct labor hours involved to complete
the service; therefore, you must use a time clock, worksheet, or a daily time card for
each employee to determine the exact amount of labor time spent on each service job.
The hourly cost of direct labor can be figured (priced) two ways. One it can be the
hourly wage only, with fringe benefits, Social Security, Workers' Compensation, etc., (all
labor-related costs) allocated to overhead. Or two, the hourly direct labor cost can
include the hourly wage plus the employer's contribution to Social Security, unemployment
compensation, disability, holidays and vacations, hospitalization and other fringe
benefits (payroll costs).
By this second method, the added payroll costs for vacations, holidays and benefits are
expressed as percentages of direct hourly wages. For instance, if two weeks of vacation
and ten holidays are given annually, this amounts to four weeks per year or 7.7% (i.e.,
four weeks off divided by fifty-two weeks 4 : 52 = 7.7%) of total labor cost was for time
off. Thus, to determine the total direct labor cost per hour by this method, you must add
the prorated cost of the payroll taxes, worker's compensation, holidays and vacation pay,
hospitalization, etc., to the hourly wage paid. As a rule of thumb, the sum of the various
payroll-benefit costs have generally been in the range of 20% to 30% of the hourly wages
paid. It is more complicated to figure but more precise to use the higher labor cost
(including labor related labor costs).
Overhead Cost
Overhead includes all job related costs other than direct materials and direct labor.
Your overhead cost depends on which of the two ways you figured direct labor costs, with
or without the labor-related payroll-benefits costs. If you did not include these expenses
in direct labor, then you must include them in overhead. In our examples, however, these
labor-related costs are included in direct labor and not in overhead. Either way the
effect on the total job cost is the same, but your overhead cost varies accordingly.
Because they may not know how to allocate (or assign) overhead costs to the services
performed, many business owner-managers miscalculate or avoid considering overhead costs.
Overhead is the indirect cost of the service and is made up of indirect materials,
indirect labor, and other indirect costs related to particular services. Indirect
materials are too minor to include as direct material costs. Incidental supplies and
machine lubricants are examples. Indirect labor is the wages, salaries, and other
payroll-benefit costs incurred by workers who do not perform the service but who support
the main service function, such as, clerical, supply, and janitorial employees. Other
costs, like taxes, depreciation, insurance, and transportation are also part of the
overhead cost because the service cost includes a portion of all indirect costs
(overhead). The following table projects total overhead for all services for one year. To
figure the portion of overhead related to particular services or jobs, you allocate the
various overhead costs by calculating the overhead rate.
The way you calculate the overhead rate should relate the overhead costs to the primary
cause for the overhead cost being expended, reflecting a reasonable amount of total
overhead to each service. The overhead rate can be expressed as a decimal, as a
percentage, or as an hourly rate. The use of the overhead rate helps to assure that all
the overhead costs expended throughout the year will be recovered as the business's
services are sold throughout the year.
In a situation where employee wages vary a lot, as when higher paid employees work with
more expensive equipment, the overhead cost is allocated on the basis of direct labor
cost. This occurs because a large proportion of the overhead cost will consist of
equipment depreciation (other indirect cost), interest on the capital invested in
equipment, and electrical costs. The overhead rate is determined as follows:
Total Overhead Cost
(1) Overhead Rate = ____________________
Total Direct Labor Cost
This is the most common method for allocating overhead cost to the specific service
performed. The above rate is suitable for machine shops and auto repair shops.
In some cases there is relatively little difference in the hourly wages paid to
different employees. In other cases, no relationship exists between the level of the
worker's skill and the amount of equipment used by the worker. Under such circumstances,
total overhead cost may be allocated on the basis of direct labor hours as follows:
Total Overhead Cost
(2) Overhead Rate = ______________________
Total Direct Labor Hours
The above rate is suitable for businesses such as secretarial services or janitorial
services. The overhead costs result mainly from the workspace, supervision, and
electricity that the workers need in order to provide the service. Using formula (2), it
is possible to determine the overhead cost per hour per employee.
Calculating the Overhead Cost
In determining the total overhead cost, a business should not depend solely on last
year's income statement. Due to inflation and business growth, last year's overhead costs
do not accurately reflect today's overhead cost. The best approach is to project the
overhead costs for the near future, that is, the anticipated overhead expenses for the
next six months to one year. The projected overhead cost will reflect additional
administrative salaries, the depreciation of new equipment that the business plans to
purchase, rent increases, energy cost increases, etc. Table 2 shows projected overhead
expenses for a business, ABC Repair Company.
The payroll taxes included in the projected overhead expenses for the
service business are only those paid on executive and office salaries. The direct labor
payroll, taxes, holiday pay, vacation pay etc., are included in the direct labor
cost shown in Table 1.
ABC Repair Company
Table 2: Projected Overhead Expenses for the upcoming year
Indirect Materials
Office Expenses 1,800
Postage 450
Repairs 2,900
Shop Supplies 2,700
Utilities 2,400
Telephone 4,400
______
14,650
Indirect Labor
Executive Salaries 30,000
Office Salaries 7,000
Payroll Taxes 12,000
Travel & Entertainment 700
______
49,700
Other Indirect Costs
Accounting 2,400
Advertising 4,800
Auto-Truck Expense 5,400
Depreciation 9,650
Insurance 1,240
Interest 2,560
Licenses 650
Miscellaneous Expense 500
Rent 8,450
______
35,650
_________
Total Overhead 100,000
To ensure that all overhead costs are included, it is best to project the overhead
costs for a full fiscal year. This aids in the treatment of expenses that occur only once
each year, such as business licenses.
Cost Calculation Example
Perhaps the most common type of service business is the repair business. The cost
calculation procedure illustrated here for the repair business can be used for other types
of service businesses. The only precaution that needs to be taken is that the appropriate
overhead rate formula which reflects the business's operation, as discussed above, be used
in the calculation.
It has been estimated, based upon previous experience, that a specific repair job will
require $20 of parts and 2 hours of labor by an employee whose labor cost is $5.00 per
hour. (These estimates will be used throughout this Guide.) As discussed earlier, the
total cost of producing any service is composed of: 1) the material cost, 2) the labor
cost, and 3) the overhead cost.
To determine the material cost (the cost of the parts), check the cost of the part in
your inventory or get a price quote from your parts suppliers. A parts wholesaler is the
source of the $20 material cost in this example.
To determine the total direct labor cost, the number of hours of direct labor used is
multiplied by the actual direct labor cost per hour. An employee whose actual direct labor
cost is $5.00 per hour, including payroll taxes and fringe benefits (see Table 1),
requires two hours to complete the repair job.
Labor Cost = Direct Labor Cost per Hour x Hours Required
Labor Cost = $5.00 per Hour x 2 Hours
Labor Cost = $10.00
The projected overhead expenses were projected to be $100,000 per year, as shown in
Table 2. The nature of the repair business is that overhead costs are most directly
related to direct labor costs than to direct material costs. The total projected direct
labor cost including payroll taxes and fringe benefits was determined to be $50,003.20
(see Table 1). The formula selected to determine the overhead rate bases upon the direct
labor cost is:
Total Overhead Cost
(1) Overhead Rate =_______________________
Total Direct Labor Cost:
$100,000 : $50,003.20 = 2.00
In most small to medium businesses, the overhead rate is between one and two (i.e.,
between 100% and 200% of the direct labor cost). Businesses that are very labor intensive,
such as a janitorial service, will have an overhead rate much less that 100%
To determine the overhead cost allocated to a specific job, the labor cost is
multiplied by the overhead rate as shown below.
(1) Overhead Cost = Direct Labor Cost x Overhead Rate
$10.00 x 2.00 = $20.00
To determine the total cost of the repair job, the material cost, the direct labor
cost, and the overhead cost are added together:
Material Cost 20.00
Direct Labor Cost 10.00
Overhead Cost 20.00
______
Total 50.00
Calculate the profit and add it to the total cost to get the price to charge for the
service, in this case a repair job. Prices charged by competitors (similar service
businesses), economic conditions of supply and demand, and legal, political, and consumer
pressures all influence the profit you can expect for your service and hence the price you
can charge for your jobs. Inflation, the amount of business you have (i.e., number of
jobs), and your productivity (the efficiency and quality of your business and service)
also all effect your profit and the way you figure your prices. You can choose from
several pricing methods. Common business practice is to express profit as a percentage of
the base used for pricing calculations no matter which pricing method you use.
Pricing Alternatives
In considering the total cost of the repair job discussed above, the material cost can
normally be predicted with a high degree of accuracy. Labor and overhead costs cannot be
predicted with such a high degree of accuracy. An employee may not feel well on a given
day. Or there may be an equipment breakdown. Either will result in higher than expected
labor costs. A provision to adjust for fluctuating labor and overhead costs can be
established through your approach to profit. The profit can be applied to the three costs
independently, allowing for variations in labor and overhead costs among jobs. For
example, a 10% profit on material, a 30% profit on direct labor, and a 30% profit on
overhead can be used to determine the price of the service.
Material Cost + Profit of Material
$20 + $20 x 10%= $22.00 $2
Direct Labor Cost + Profit on Direct Labor
$10 + $10 x 30% = $13.00 $3
Overhead Cost + Profit on Overhead
$20 + $20 x 30%= $26.00 $6
______ ______ ______
$50 Cost $61.00 Price $11 Profit
The concept of applying a different rate of profit on the three underlying costs (
material, labor, and overhead) is one method of dealing with the large difference in
predictability of costs that exists between labor and materials in most service
businesses. To reflect the fluctuations in utilization and cost of labor and overhead from
job to job, your profit on labor and overhead should normally be higher than profits on
materials.
Direct Cost Pricing
With this method you set your selling price based on direct cost, that is, on direct
materials (DM) and direct labor (DL). DM of $20 plus DL of $10 equals Direct Costs of $30.
Overhead (OH) costs are $20; so to earn the $11 profit you need, your selling price must
be at least $31 above your direct cost to charge; divide direct costs into overhead plus
needed profit:
$31 ($11 + $20) : $30 = 103 1/3%
(proof $30 x 103 1/3% = $30 x 1.033 = $11)
In most small businesses, there is not a large amount of overhead cost associated with
obtaining parts besides a telephone call to order them. Charging a large amount of
overhead to parts may result in pricing yourself out of the market.
By all these methods you are deriving a selling price for your service. Sometimes
however you start with the selling price already established - by competition or economic
conditions. Then you must figure out the most cost you can incur and still earn your
needed profit.