Under Absorption and Over Absorption

Under Absorption

Under absorption of overheads occurs when the overheads allocated to a product or department are less than the actual overheads incurred. This situation typically arises when the actual overhead expenses exceed the estimates used in the costing process or when production levels are lower than anticipated, leading to insufficient absorption of fixed costs. Under absorption reflects a gap in covering the total costs within the pricing of products, potentially affecting profitability. It is crucial for businesses to monitor and adjust the absorption rates regularly to ensure that all incurred costs are accurately reflected in the product costs. Corrective actions may include revising the predetermined overhead rates or adjusting production volumes and operational efficiencies.

Causes of Under Absorption:

• Inaccurate Budgeting:

If the initial estimates of overhead costs are set too low compared to actual costs, under absorption will occur. This might be due to an underestimate of the cost factors or unexpected price increases.

• Decreased Production Levels:

Under absorption often happens when production volume is lower than planned. Since overheads are spread over a smaller number of units, each unit carries less of the overhead cost than anticipated.

• Inefficient Production:

Increases in idle time, machine breakdowns, or inefficient production processes can lead to higher actual overheads than the overheads allocated per unit.

• Fluctuating Operating Costs:

Variable costs such as utility prices or maintenance costs can increase unexpectedly, which may not be immediately reflected in the overhead rate calculations.

• Changes in Production Methods:

A shift in production methods or technology that increases overhead costs (like higher energy consumption or the need for additional maintenance) can lead to under absorption if not anticipated in the overhead cost allocation.

• Seasonal Variations:

In industries where production is seasonal, off-peak production periods can lead to under absorption due to lower than normal production levels, while overheads like rent or salaries remain constant.

• Unexpected Increases in Overhead Costs:

This can include sudden hikes in rent, salaries, utilities, or maintenance expenses that were not projected during the budgeting process.

• Poor Estimation of Machine Hours:

If the estimated machine hours used to calculate machine rate are too high, it can lead to under absorption where the actual hours of machine use are less than expected, resulting in insufficient allocation of overheads.

Dealing with Under Absorption:

• Adjust Overhead Rates:

Review and possibly increase the predetermined overhead rates if they consistently result in under absorption. Ensure that these rates are based on accurate, up-to-date information regarding costs and operating capacity.

• Examine Cost Drivers and Allocation Bases:

Analyze whether the current bases for allocating overhead (like labor hours, machine hours, or production units) still accurately reflect the way overhead costs are incurred. Adjustments to the allocation base can correct mismatches between allocated costs and actual usage.

• Enhance Cost Tracking and Control:

Improve the tracking and monitoring of overhead costs. More detailed and frequent tracking can help identify areas where costs are being underestimated and allow for more precise allocation.

• Revise Budgeting Processes:

If under absorption is a recurring issue, revising the budgeting processes to better estimate future costs and production levels might be necessary. This includes improving the accuracy of forecasting techniques.

• Implement Regular Reviews:

Establish a routine review process for overhead costs and absorption rates. This can help catch under absorption early and adjust practices before they significantly impact financial results.

• Improve Operational Efficiency:

Sometimes, under absorption is due to inefficiencies in operations that increase overhead costs. Identifying and eliminating these inefficiencies can reduce overall overhead costs, making it easier to match with absorbed amounts.

• Financial Adjustments in Reporting:

Make necessary financial adjustments to reflect the true cost on financial statements. This may involve amending the cost of goods sold or adjusting inventory values to align with actual overhead costs.

• Educate and Train Staff:

Ensure that all relevant personnel, especially those in accounting and manufacturing departments, are educated about the importance of accurate overhead absorption and trained in the necessary skills to manage it effectively.

• Communicate Changes and Results:

Keep all stakeholders, including management and production teams, informed about the changes in overhead rates or processes and how these changes impact the business.

• Establish a Contingency Plan:

Develop a plan to handle significant variances from budgeted overhead costs. This could include setting aside reserves or having flexible financing options available to cover unexpected increases in overheads.

Over Absorption

Over absorption of overheads occurs when the overheads allocated to a product or department exceed the actual overheads incurred. This discrepancy typically results from using a predetermined overhead rate that overestimates the amount of overheads required relative to actual expenses, or when production volumes are higher than initially planned, leading to a higher allocation of fixed costs per unit. Over absorption can result in products appearing more costly than they actually are, potentially impacting pricing decisions and profitability analyses. To rectify over absorption, companies may need to adjust their overhead rates or review their cost allocation methods to ensure that overhead costs are represented accurately and fairly across products or departments.

Causes of Over Absorption:

• Overestimation of Overheads:

If the predetermined overhead rate is set too high based on an overestimation of expected costs, it can lead to allocating more overheads to products than actually incurred.

• Increased Production Levels:

When actual production exceeds the estimated levels, the overhead costs get spread over more units than originally planned, reducing the overhead cost per unit and potentially leading to over absorption.

• Reduction in Actual Overhead Costs:

If actual overhead expenses decrease due to cost-saving measures, lower utility rates, or reductions in indirect labor costs, but the overhead rate isn’t adjusted accordingly, over absorption can occur.

• Efficiency Improvements:

Gains in production efficiency, such as faster production times, fewer machine breakdowns, or less waste, can lead to a higher than anticipated volume of production without a corresponding increase in overhead costs.

• Seasonal Production Peaks:

In industries where production is highly seasonal, a peak production period might lead to over absorption if the overhead rates designed for average or lower production levels are not adjusted.

• Inaccurate Allocation Bases:

Using an improper basis for overhead allocation (e.g., machine hours, labor hours) that does not reflect the actual drivers of overhead costs can lead to over absorption if the base is overestimated.

• Misjudgment in Variable Overhead Projections:

Misestimating the variable components of overheads which are dependent on production volume, such as power or materials, can lead to an overhead rate that is too high relative to actual usage.

• Quick Technological or Process Upgrades:

Rapid improvements or changes in technology or production processes can lead to decreased overhead costs which, if not adjusted in the overhead calculation, can result in over absorption.

Dealing with Overhead Absorption:

• Review and Adjust Overhead Rates:

One of the first actions is to reassess the overhead rates used for cost allocation. Overhead rates might need adjustment to better reflect current or expected conditions and actual overhead costs.

• Analyze Production Processes:

Examine the production processes to identify efficiency gains or changes that have reduced overhead costs. Understanding these changes can help in setting more accurate overhead rates.

• Modify the Allocation Base:

Overhead is often allocated based on a predetermined base such as labor hours, machine hours, or production units. If over absorption is occurring, it might be due to an inappropriate base or changes in activity levels. Adjusting the allocation base to more accurately reflect how overheads are incurred can help.

• Implement Continuous Monitoring:

Establish a system for continuous monitoring of overhead costs and the factors affecting them. This proactive approach ensures that discrepancies are detected and corrected promptly, preventing large variances at year-end.

• Adjust Pricing Strategy:

If over absorption is a recurring issue, consider whether pricing strategies need adjustment. Reducing prices might be feasible if the company consistently spends less on overhead than expected, which could also help improve market competitiveness.

• Correct Financial Statements:

If over absorption has distorted profit margins, it’s crucial to correct financial statements to reflect true costs and profitability. This may involve making adjustments to the cost of goods sold and inventory valuation.

• Improve Forecasting Methods:

Enhancing forecasting accuracy for both production volumes and overhead costs can prevent future instances of over absorption. Better forecasting tools and methods might need to be employed.

• Communicate with Stakeholders:

Keep all relevant stakeholders, including management and financial teams, informed about changes in overhead absorption rates and the impacts on financial reporting.

• Train Cost Accountants:

Ensure that the cost accounting team understands the implications of over absorption and is equipped with the skills to manage overhead rates effectively.

• Refine Budgetary Control:

Strengthen budgetary controls to ensure that overhead costs align more closely with budgeted amounts. This might involve stricter control measures or more frequent budget reviews.

Key differences between Under Absorption and Over Absorption

Aspect	Under Absorption	Over Absorption
Budgeting Accuracy	Estimates too low	Estimates too high
Production Levels	Lower than planned	Higher than planned
Cost Allocation	Insufficient coverage	Excessive coverage
Actual Costs	Higher than expected	Lower than expected
Efficiency	Possible inefficiencies	Efficiency improvements
Overhead Rates	Underestimated rates	Overestimated rates
Cost Impact	Increased per unit cost	Decreased per unit cost
Pricing	Potentially uncompetitive	Potentially too competitive
Profit Margins	Reduced margins	Artificially high margins
Financial Health	Possible financial strain	Temporary financial surplus
Management Actions	Increase production/use	Adjust rates/decrease costs
Seasonality Impact	Off-peak underperformance	Peak overperformance

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