# What Predetermined Overhead Rate Is Formula and Sample

This predetermined rate was based on a cost formula that estimated \$\\$ 257,400\$ of total manufacturing overhead cost for an estimated activity level of 11,000 direct labor-hours. The most common allocation base used in manufacturing is machine hours, direct labor hours, or direct materials cost. For example, if the allocation base is machine hours, estimate the total number of machine hours for the period. Further, the company uses direct labor hours to assign manufacturing overhead costs to products. As per the budget, the company will require 150,000 direct labor hours during the forthcoming year.

The concept of predetermined overhead rate is very important because it is used most of the enterprises as it enables them to estimate the approximate total cost of each job. Larger organizations employ different allocation bases for determining the predetermined overhead rate in each production department. However, in recent years the manufacturing operations have started to use machine hours more predominantly as the allocation base. A predetermined overhead rate is defined as the ratio of manufacturing overhead costs to the total units of allocation. A single plantwide factory overhead rate is used to allocate overhead costs to products.

Plantwide Overhead Rate Method Divide your total expenses for the plant by the total number of units you produce. Using the plantwide overhead rate formula, if expenses come to \$10,000 for instance and you produce 2,500 units, \$10,000 divided by 2,500 equals four. However, one major disadvantage of the method break even analysis is that both the numerator and the denominator are estimates and as such, it is possible that the actual result may vary significantly from the predetermined overhead rate. Departmental overhead rates are needed because different processes are involved in production that take place in different departments.

## What is a plant-wide overhead rate?

Company B wants a predetermined rate for a new product that it will be launching soon. Its production department comes up with the details of how much the overheads will be and what other costs will be incurred. Therefore, the predetermined overhead rate of GHJ Ltd for next year is expected to be \$5,000 per machine hour. Therefore, the predetermined overhead rate of TYC Ltd for the upcoming year is expected to be \$320 per hour. The production hasn’t taken place and is completely based on forecasts or previous accounting records, and the actual overheads incurred could turn out to be way different than the estimate.

• With \$2.00 of overhead per direct hour, the Solo product is estimated to have \$700,000 of overhead applied.
• This method of allocation is simple and easy to use, making it popular among small businesses with homogeneous product lines.
• While it may become more complex to have different rates for each department, it is still considered more accurate and helpful because the level of efficiency and precision increases.
• The most common allocation base used in manufacturing is machine hours, direct labor hours, or direct materials cost.

A single overhead rate for assigning all of the manufacturing production and service department costs to products. This rate is less accurate than departmental rates if a company manufactures a diverse group of products. In these situations, a direct cost (labor) has been replaced by an overhead cost (e.g., depreciation on equipment). Because of this decrease in reliance on labor and/or changes in the types of production complexity and methods, the traditional method of overhead allocation becomes less effective in certain production environments.

However, it has limitations, such as inaccurate product costs, which can result in mispricing and lost profits. Therefore, companies should consider more sophisticated methods of allocating overhead costs, such as activity-based costing, for more accurate and reliable cost information. A predetermined overhead rate is an allocation rate given for indirect manufacturing costs that are involved in the production of a product (or several products). The estimate is made at the beginning of an accounting period, before the commencement of any projects or specific jobs for which the rate is needed. Until now, you have learned to apply overhead to production based on a predetermined overhead rate typically using an activity base. An activity base is considered to be a primary driver of overhead costs, and traditionally, direct labor hours or machine hours were used for it.

Different businesses have different ways of costing; some use the single rate, others use multiple rates, and the rest use activity-based costing. The predetermined overhead rate calculation shown in the example above is known as the single predetermined overhead rate or plant-wide overhead rate. The allocation base (also known as the activity base or activity driver) can differ depending on the nature of the costs involved. From the above list, salaries of floor managers, factory rent, depreciation and property tax form part of manufacturing overhead. Small companies typically use activity-based costing, while large organizations will have departments that compute their own rates. After reviewing the product cost and consulting with the marketing department, the sales prices were set.

## Step 1 of 3

The common allocation bases are direct labor hours, direct labor cost, machine hours, and direct materials. However, if the company manufactures diverse products, some of which use expensive equipment while some use only inexpensive equipment, or the company wants precise costs for pricing decisions, a plant-wide rate is not appropriate. In response to this situation, manufacturers will use departmental overhead rates and perhaps activity based costing.

## Which of the following is the formula to calculate the predetermined factory overhead rate?

The sales price, cost of each product, and resulting gross profit are shown in Figure 6.6. The monthly accounting close process for a nonprofit organization involves a series of steps to ensure accurate and up-to-date financial records. Unexpected expenses can be a result of a big difference between actual and estimated overheads. Also, if the rates determined are nowhere close to being accurate, the decisions based on those rates will be inaccurate, too. Harold Averkamp (CPA, MBA) has worked as a university accounting instructor, accountant, and consultant for more than 25 years.

In other words, it is the total amount of factory overhead costs divided by the total amount of the allocation base. Let us take the example of ort GHJ Ltd which has prepared the budget for next year. The company estimates a gross profit of \$100 million on total estimated revenue of \$250 million. As per the budget, direct labor cost and raw material cost for the period is expected to be \$40 million and \$60 million respectively. Calculate the predetermined overhead rate of GHJ Ltd if the required machine hours for next year’s production is estimated to be 10,000 hours. As you’ve learned, understanding the cost needed to manufacture a product is critical to making many management decisions (Figure 6.2).

## Formula for Predetermined Overhead Rate

A plant-wide overhead rate is often a single rate per hour or a percentage of some cost that is used to allocate or assign a company’s manufacturing overhead costs to the goods produced. So, for every hour of direct labor used to produce widgets and gizmos, XYZ Inc. will allocate \$50 of manufacturing overhead costs. The term “predetermined overhead rate” refers to the allocation rate that is assigned to products or job orders at the beginning of a project based on the estimated cost of manufacturing overhead for a specific period of reporting. To calculate a predetermined overhead rate, divide the manufacturing overhead cost by the units of allocation. There are concerns that the rate may not be accurate, as it is based on estimates rather than actual data.

Knowing the total and component costs of the product is necessary for price setting and for measuring the efficiency and effectiveness of the organization. Remember that product costs consist of direct materials, direct labor, and manufacturing overhead. A company’s manufacturing overhead costs are all costs other than direct material, direct labor, or selling and administrative costs. Once a company has determined the overhead, it must establish how to allocate the cost. This allocation can come in the form of the traditional overhead allocation method or activity-based costing..

## How Do You Calculate Single Plantwide Factory Overhead Rate?

For example, a production facility that is fairly labor intensive would likely determine that the more labor hours worked, the higher the overhead will be. As a result, management would likely view labor hours as the activity base when applying overhead costs. Enter the total manufacturing overhead cost and the estimated units of the allocation base for the period to determine the overhead rate. For example, the total direct labor hours estimated for the solo product is 350,000 direct labor hours. With \$2.00 of overhead per direct hour, the Solo product is estimated to have \$700,000 of overhead applied. When the \$700,000 of overhead applied is divided by the estimated production of 140,000 units of the Solo product, the estimated overhead per product for the Solo product is \$5.00 per unit.

A predetermined overhead rate, also known as a plant-wide overhead rate, is a calculation used to determine how much of the total manufacturing overhead cost will be attributed to each unit of product manufactured. The rate is determined by dividing the fixed overhead cost by the estimated number of direct labor hours. A predetermined overhead rate is calculated at the start of the accounting period by dividing the estimated manufacturing overhead by the estimated activity base. The predetermined overhead rate is then applied to production to facilitate determining a standard cost for a product. XYZ Inc. estimates that its total manufacturing overhead costs for the upcoming year will be \$500,000.