Standard Costs & Operating Performance Measures McGraw-Hill/Irwin Copyright © 2008, The McGraw-Hill Companies, Inc. 11-2 Standard Costs Standards are “benchmarks” or “norms” for measuring performance. Two types of standards are commonly used. Price standards Specify how much should be paid for each unit of the input. McGraw-Hill/Irwin Quantity standards specify how much of an input should be used to make a product. Copyright © 2008, The McGraw-Hill Companies, Inc. Standard Cost Card – Variable Production Cost 11-3 A standard cost card for one unit of product might look like this: Inputs Direct materials Direct labor Variable mfg. overhead Total standard unit cost Standard Price or Rate $ 4.00 per lb. 14.00 per hour 3.00 per hour Standard Standard Quantity Cost or Hours per Unit 3.0 lbs. 2.5 hours 2.5 hours $ $ 12.00 35.00 7.50 54.50 * Fixed cost will be discussed later. McGraw-Hill/Irwin Copyright © 2008, The McGraw-Hill Companies, Inc. 11-4 Setting Standard Costs Accountants, engineers, purchasing agents, and production managers combine efforts to set standards that encourage efficient production. McGraw-Hill/Irwin Copyright © 2008, The McGraw-Hill Companies, Inc. 11-5 Setting Standard Costs Should we use ideal standards that require employees to work at 100 percent peak efficiency? Engineer McGraw-Hill/Irwin I recommend using practical standards that are currently attainable with reasonable and efficient effort. Managerial Accountant Copyright © 2008, The McGraw-Hill Companies, Inc. 11-6 Standard Costs Amount Significant deviations from standards are brought to the attention of management, a practice known as management by exception. Standard Direct Labor Direct Material Manufacturing Overhead Type of Product Cost McGraw-Hill/Irwin Copyright © 2008, The McGraw-Hill Companies, Inc. 11-7 Variance Analysis Cycle Identify & ask questions Receive explanations Exhibit 10-1 Take corrective actions Conduct next period’s operations Analyze variances Prepare standard cost performance report Begin McGraw-Hill/Irwin Copyright © 2008, The McGraw-Hill Companies, Inc. 11-8 A General Model for Variance Analysis Variance Analysis Price Variance Quantity Variance Difference between actual price and standard price Difference between actual quantity and standard quantity McGraw-Hill/Irwin Copyright © 2008, The McGraw-Hill Companies, Inc. 11-9 A General Model for Variance Analysis Variance Analysis Price Variance Quantity Variance Materials price variance Labor rate variance VOH spending variance Materials quantity variance Labor efficiency variance VOH efficiency variance McGraw-Hill/Irwin Copyright © 2008, The McGraw-Hill Companies, Inc. 11-10 A General Model for Variance Analysis Variance = Actual Cost (AC) – Standard Cost (SC) We have favorable (F) or unfavorable (U) variance as follows: Total Variance is F (U) if AC < (>) SC. McGraw-Hill/Irwin Copyright © 2008, The McGraw-Hill Companies, Inc. 11-11 A General Model for Variance Analysis Variance = Actual cost (AC) – Standard Cost (SC) Actual cost = AQ × AP AQ = Actual Quantity AP = Actual Price Standard cost = SP x SQ SP = Standard Price SQ = Standard Quantity McGraw-Hill/Irwin Copyright © 2008, The McGraw-Hill Companies, Inc. 11-12 A General Model for Variance Analysis Variance = Actual cost (AC) – Standard Cost (SC) = AQ × AP – SP x SQ = AQ x AP – AQ x SP + AQ x SP – SP x SQ = AQ(AP – SP) + (AQ – SQ)SP McGraw-Hill/Irwin Copyright © 2008, The McGraw-Hill Companies, Inc. 11-13 A General Model for Variance Analysis Variance = Actual cost (AC) – Standard Cost (SC) = AQ (AP – SP) + (AQ – SQ) SP In sum, we have a favorable (F) or unfavorable (U) variance as follows: Total Variance is F (U) if AC < (>) SC; Price (Rate, Spending) Variance is F (U) if AP < (>) SP; Quantity (Efficiency) Variance is F (U) if AQ < (>) SQ. McGraw-Hill/Irwin Copyright © 2008, The McGraw-Hill Companies, Inc. 11-14 A General Model for Variance Analysis Actual Quantity × Actual Price Actual Quantity × Standard Price Price Variance McGraw-Hill/Irwin Standard Quantity × Standard Price Quantity Variance Copyright © 2008, The McGraw-Hill Companies, Inc. 11-15 A General Model for Variance Analysis Actual Quantity × Actual Price Actual Quantity × Standard Price Price Variance Standard Quantity × Standard Price Quantity Variance Actual quantity is the amount of direct materials, direct labor, and variable manufacturing overhead actually used. McGraw-Hill/Irwin Copyright © 2008, The McGraw-Hill Companies, Inc. 11-16 A General Model for Variance Analysis Actual Quantity × Actual Price Actual Quantity × Standard Price Price Variance Standard Quantity × Standard Price Quantity Variance Standard quantity is the standard quantity allowed for the actual output of the period. McGraw-Hill/Irwin Copyright © 2008, The McGraw-Hill Companies, Inc. 11-17 A General Model for Variance Analysis Actual Quantity × Actual Price Actual Quantity × Standard Price Price Variance Standard Quantity × Standard Price Quantity Variance Actual price is the amount actually paid for the input used. McGraw-Hill/Irwin Copyright © 2008, The McGraw-Hill Companies, Inc. 11-18 A General Model for Variance Analysis Actual Quantity × Actual Price Actual Quantity × Standard Price Price Variance Standard Quantity × Standard Price Quantity Variance Standard price is the amount that should have been paid for the input used. McGraw-Hill/Irwin Copyright © 2008, The McGraw-Hill Companies, Inc. 11-19 A General Model for Variance Analysis Actual Quantity × Actual Price Actual Quantity × Standard Price Price Variance AQ × (AP – SP) AQ = Actual Quantity AP = Actual Price McGraw-Hill/Irwin Standard Quantity × Standard Price Quantity Variance (AQ – SQ) × SP) SP = Standard Price SQ = Standard Quantity Copyright © 2008, The McGraw-Hill Companies, Inc. 11-20 Learning Objective 2 Compute the direct materials price and quantity variances and explain their significance. McGraw-Hill/Irwin Copyright © 2008, The McGraw-Hill Companies, Inc. 11-21 Material Variances Example Glacier Peak Outfitters has the following direct material standard for the fiberfill for its mountain parka. 0.1 kg of fiberfill per parka at $5.00 per kg Last month 210 kgs of fiberfill were purchased and used to make 2,000 parkas. The material cost a total of $1,029. McGraw-Hill/Irwin Copyright © 2008, The McGraw-Hill Companies, Inc. 11-22 Material Variances Summary Actual Quantity × Actual Price Actual Quantity × Standard Price 210 kgs. × $4.90 per kg. 210 kgs. × $5.00 per kg. = $1,029 McGraw-Hill/Irwin = $1,050 Standard Quantity × Standard Price 200 kgs. × $5.00 per kg. = $1,000 Copyright © 2008, The McGraw-Hill Companies, Inc. 11-23 Material Variances Summary Actual Quantity × Actual Price 210 kgs. × $4.90 per kg. = $1,029 McGraw-Hill/Irwin Actual Quantity × Standard Price 210 kgs. × kgs $1,029 210 $5.00per perkg kg. = $4.90 = $1,050 Standard Quantity × Standard Price 200 kgs. × $5.00 per kg. = $1,000 Copyright © 2008, The McGraw-Hill Companies, Inc. 11-24 Material Variances Summary Actual Quantity × Actual Price Actual Quantity × Standard Price Standard Quantity × Standard Price 210 kgs. 210 kgs. 200 kgs. × × 0.1 kg per parka× 2,000 parkas $4.90 per kg. $5.00 $5.00 per kg. = 200 per kgs kg. = $1,029 McGraw-Hill/Irwin = $1,050 = $1,000 Copyright © 2008, The McGraw-Hill Companies, Inc. 11-25 Material Variances Summary Actual Quantity × Actual Price Actual Quantity × Standard Price 210 kgs. × $4.90 per kg. 210 kgs. × $5.00 per kg. = $1,029 Price variance $21 favorable McGraw-Hill/Irwin = $1,050 Standard Quantity × Standard Price 200 kgs. × $5.00 per kg. = $1,000 Quantity variance $50 unfavorable Copyright © 2008, The McGraw-Hill Companies, Inc. Material Variances: Using the Factored Equations 11-26 Materials price variance MPV = AQ (AP - SP) = 210 kgs ($4.90/kg - $5.00/kg) = 210 kgs (-$0.10/kg) = -$21 F Materials quantity variance MQV = SP (AQ - SQ) = $5.00/kg [210 kgs-(0.1 kg/parka 2,000 parkas)] = $5.00/kg (210 kgs - 200 kgs) = $5.00/kg (10 kgs) = $50 U McGraw-Hill/Irwin Copyright © 2008, The McGraw-Hill Companies, Inc. 11-27 Responsibility for Material Variances Materials Price Variance Purchasing Manager Materials Quantity Variance Production Manager The standard price is used to compute the quantity variance, so that the production manager is not held responsible for the purchasing manager’s performance. McGraw-Hill/Irwin Copyright © 2008, The McGraw-Hill Companies, Inc. 11-28 Responsibility for Material Variances I am not responsible for this unfavorable material quantity variance. You purchased cheap material, so my people had to use more of it. McGraw-Hill/Irwin Your poor scheduling sometimes requires me to rush order material at a higher price, causing unfavorable price variances. Copyright © 2008, The McGraw-Hill Companies, Inc. 11-29 Material Variances How are the material variances computed if the amount purchased differs from the amount used? McGraw-Hill/Irwin The price variance is computed on the entire quantity purchased. The quantity variance is computed only on the quantity used. Copyright © 2008, The McGraw-Hill Companies, Inc. 11-30 Quick Check Zippy Hanson Inc. has the following direct material standard to manufacture one Zippy: 1.5 pounds per Zippy at $4.00 per pound Last week, 1,700 pounds of material were purchased and used to make 1,000 Zippies. The material cost a total of $6,630. McGraw-Hill/Irwin Copyright © 2008, The McGraw-Hill Companies, Inc. 11-31 Quick Check Actual Quantity × Actual Price Actual Quantity × Standard Price Zippy Standard Quantity × Standard Price 1,700 lbs. × $3.90 per lb. 1,700 lbs. × $4.00 per lb. 1,500 lbs. × $4.00 per lb. = $6,630 = $ 6,800 = $6,000 Price variance $170 favorable McGraw-Hill/Irwin Quantity variance $800 unfavorable Copyright © 2008, The McGraw-Hill Companies, Inc. 11-32 Quick Check Continued Zippy Hanson Inc. has the following material standard to manufacture one Zippy: 1.5 pounds per Zippy at $4.00 per pound Last week, 2,800 pounds of material were purchased at a total cost of $10,920, and 1,700 pounds were used to make 1,000 Zippies. McGraw-Hill/Irwin Copyright © 2008, The McGraw-Hill Companies, Inc. 11-33 Quick Check Continued Actual Quantity Purchased × Actual Price Actual Quantity Purchased × Standard Price 2,800 lbs. × $3.90 per lb. 2,800 lbs. × $4.00 per lb. = $10,920 = $11,200 Price variance $280 favorable McGraw-Hill/Irwin Zippy Price variance increases because quantity purchased increases. Copyright © 2008, The McGraw-Hill Companies, Inc. 11-34 Quick Check Continued Actual Quantity Used × Standard Price Standard Quantity × Standard Price 1,700 lbs. × $4.00 per lb. 1,500 lbs. × $4.00 per lb. = $6,800 = $6,000 Quantity variance is unchanged because actual and standard quantities are unchanged. McGraw-Hill/Irwin Zippy Quantity variance $800 unfavorable Copyright © 2008, The McGraw-Hill Companies, Inc. 11-35 Learning Objective 3 Compute the direct labor rate and efficiency variances and explain their significance. McGraw-Hill/Irwin Copyright © 2008, The McGraw-Hill Companies, Inc. 11-36 Labor Variances Example Glacier Peak Outfitters has the following direct labor standard for its mountain parka. 1.2 standard hours per parka at $10.00 per hour Last month, employees actually worked 2,500 hours at a total labor cost of $26,250 to make 2,000 parkas. McGraw-Hill/Irwin Copyright © 2008, The McGraw-Hill Companies, Inc. 11-37 Labor Variances Summary Actual Hours × Actual Rate Actual Hours × Standard Rate 2,500 hours × $10.50 per hour 2,500 hours × $10.00 per hour. = $26,250 = $25,000 Rate variance $1,250 unfavorable McGraw-Hill/Irwin Standard Hours × Standard Rate 2,400 hours × $10.00 per hour = $24,000 Efficiency variance $1,000 unfavorable Copyright © 2008, The McGraw-Hill Companies, Inc. 11-38 Labor Variances Summary Actual Hours × Actual Rate 2,500 hours × $10.50 per hour = $26,250 Actual Hours × Standard Rate 2,500 hours 2,400 hours × $26,250× 2,500 hours $10.00 per hour. = $10.50 per hour $10.00 per hour = $25,000 Rate variance $1,250 unfavorable McGraw-Hill/Irwin Standard Hours × Standard Rate = $24,000 Efficiency variance $1,000 unfavorable Copyright © 2008, The McGraw-Hill Companies, Inc. 11-39 Labor Variances Summary Actual Hours × Actual Rate Actual Hours × Standard Rate Standard Hours × Standard Rate 2,500 hours 2,500 hours 2,400 hours × × × 1.2 hours per parka 2,000 $10.50 per hour parkas $10.00 per hour. $10.00 per hour = 2,400 hours = $26,250 = $25,000 Rate variance $1,250 unfavorable McGraw-Hill/Irwin = $24,000 Efficiency variance $1,000 unfavorable Copyright © 2008, The McGraw-Hill Companies, Inc. Labor Variances: Using the Factored Equations 11-40 Labor rate variance LRV = AH (AR - SR) = 2,500 hours ($10.50 per hour – $10.00 per hour) = 2,500 hours ($0.50 per hour) = $1,250 unfavorable Labor efficiency variance LEV = SR (AH - SH) = $10.00 per hour (2,500 hours – 2,400 hours) = $10.00 per hour (100 hours) = $1,000 unfavorable McGraw-Hill/Irwin Copyright © 2008, The McGraw-Hill Companies, Inc. 11-41 Responsibility for Labor Variances Production managers are usually held accountable for labor variances because they can influence the: Mix of skill levels assigned to work tasks. Level of employee motivation. Quality of production supervision. Production Manager McGraw-Hill/Irwin Quality of training provided to employees. Copyright © 2008, The McGraw-Hill Companies, Inc. Responsibility for Labor Variances 11-42 I am not responsible for the unfavorable labor efficiency variance! You purchased cheap material, so it took more time to process it. McGraw-Hill/Irwin I think it took more time to process the materials because the Maintenance Department has poorly maintained your equipment. Copyright © 2008, The McGraw-Hill Companies, Inc. 11-43 Learning Objective 4 Compute the variable manufacturing overhead spending and efficiency variances. McGraw-Hill/Irwin Copyright © 2008, The McGraw-Hill Companies, Inc. 11-44 Variable Manufacturing Overhead Variances Example Glacier Peak Outfitters has the following variable manufacturing overhead standard for its mountain parka. 1.2 standard hours per parka at $4.00 per hour Last month, employees actually worked 2,500 hours to make 2,000 parkas. Actual variable manufacturing overhead for the month was $10,500. McGraw-Hill/Irwin Copyright © 2008, The McGraw-Hill Companies, Inc. 11-45 Variable Manufacturing Overhead Variances Summary Actual Hours × Actual Rate Actual Hours × Standard Rate Standard Hours × Standard Rate 2,500 hours × $4.20 per hour 2,500 hours × $4.00 per hour 2,400 hours × $4.00 per hour = $10,500 = $10,000 = $9,600 Spending variance $500 unfavorable McGraw-Hill/Irwin Efficiency variance $400 unfavorable Copyright © 2008, The McGraw-Hill Companies, Inc. 11-46 Variable Manufacturing Overhead Variances Summary Actual Hours × Actual Rate 2,500 hours × $4.20 per hour = $10,500 Actual Hours × Standard Rate 2,500 hours 2,400 hours × $10,500× 2,500 hours $4.00 per per hourhour $4.00 per hour = $4.20 = $10,000 Spending variance $500 unfavorable McGraw-Hill/Irwin Standard Hours × Standard Rate = $9,600 Efficiency variance $400 unfavorable Copyright © 2008, The McGraw-Hill Companies, Inc. 11-47 Variable Manufacturing Overhead Variances Summary Actual Hours × Actual Rate Actual Hours × Standard Rate 2,500 hours 2,500 hours × × 1.2 hours per parka 2,000 $4.20 per hour parkas $4.00 per hour = 2,400 hours = $10,500 = $10,000 Spending variance $500 unfavorable McGraw-Hill/Irwin Standard Hours × Standard Rate 2,400 hours × $4.00 per hour = $9,600 Efficiency variance $400 unfavorable Copyright © 2008, The McGraw-Hill Companies, Inc. 11-48 Variable Manufacturing Overhead Variances: Using Factored Equations Variable manufacturing overhead spending variance VMOSV = AH (AR - SR) = 2,500 hours ($4.20 per hour – $4.00 per hour) = 2,500 hours ($0.20 per hour) = $500 unfavorable Variable manufacturing overhead efficiency variance VMOEV = SR (AH - SH) = $4.00 per hour (2,500 hours – 2,400 hours) = $4.00 per hour (100 hours) = $400 unfavorable McGraw-Hill/Irwin Copyright © 2008, The McGraw-Hill Companies, Inc. 11-49 Learning Objective 5 Compute the predetermined overhead rate and apply overhead to products in a standard cost system. McGraw-Hill/Irwin Copyright © 2008, The McGraw-Hill Companies, Inc. 11-50 Overhead Rates and Overhead Analysis Recall that overhead costs are applied to products using a predetermined overhead rate: Applied Overhead = POHR × Activity Level Flexible budget overhead for the denominator level of activity POHR McGraw-Hill/Irwin = Denominator level of activity Copyright © 2008, The McGraw-Hill Companies, Inc. 11-51 Normal versus Standard Cost Systems In a normal cost system, overhead is applied to work in process based on the actual number of hours worked in the period. McGraw-Hill/Irwin In a standard cost system, overhead is applied to work in process based on the standard hours allowed for the actual output of the period. Copyright © 2008, The McGraw-Hill Companies, Inc. Overhead Rates and Overhead Analysis – Example 11-52 ColaCo prepared this Machine Hours 3,000 4,000 Total Variable Overhead $ budget for overhead: Variable Overhead Rate 6,000 ? 8,000 ? Total Fixed Overhead $ Fixed Overhead Rate 9,000 ? 9,000 ? Let’s calculate overhead rates. ColaCo applies overhead based on machine-hour activity. McGraw-Hill/Irwin Copyright © 2008, The McGraw-Hill Companies, Inc. Overhead Rates and Overhead Analysis – Example 11-53 ColaCo prepared this Machine Hours 3,000 4,000 budget for overhead: Total Variable Overhead Variable Overhead Rate Total Fixed Overhead $ $ $ 6,000 8,000 2.00 2.00 Fixed Overhead Rate 9,000 ? 9,000 ? Rate = Total Variable Overhead ÷ Machine Hours This rate is constant at all levels of activity. McGraw-Hill/Irwin Copyright © 2008, The McGraw-Hill Companies, Inc. Overhead Rates and Overhead Analysis – Example 11-54 ColaCo prepared this Machine Hours 3,000 4,000 budget for overhead: Total Variable Overhead Variable Overhead Rate Total Fixed Overhead Fixed Overhead Rate $ $ $ $ 6,000 8,000 2.00 2.00 9,000 9,000 3.00 2.25 Rate = Total Fixed Overhead ÷ Machine Hours This rate decreases when activity increases. McGraw-Hill/Irwin Copyright © 2008, The McGraw-Hill Companies, Inc. Overhead Rates and Overhead Analysis – Example 11-55 ColaCo prepared this Machine Hours 3,000 4,000 budget for overhead: Total Variable Overhead Variable Overhead Rate Total Fixed Overhead Fixed Overhead Rate $ $ $ $ 6,000 8,000 2.00 2.00 9,000 9,000 3.00 2.25 The total POHR is the sum of the fixed and variable rates for a given activity level. McGraw-Hill/Irwin Copyright © 2008, The McGraw-Hill Companies, Inc. 11-56 Fixed Overhead Analysis Regarding FOH in standard costing, we need to consider three things: 1) Actual FOH 2) FOH Budget (the same for all activity levels) = FOH rate x Denominator activity level 3) FOH Applied = Standard Costs = FOH rate x the standard hours allowed for the actual output McGraw-Hill/Irwin Copyright © 2008, The McGraw-Hill Companies, Inc. 11-57 Fixed Overhead Variances Actual Fixed Overhead Incurred Fixed Overhead Budget Fixed Overhead Applied (SC) SH × SR Budget Variance Volume Variance SR = Standard Fixed Overhead Rate SH = Standard Hours Allowed McGraw-Hill/Irwin Copyright © 2008, The McGraw-Hill Companies, Inc. 11-58 Fixed Overhead Variances – Example ColaCo’s predetermined overhead rate is based on 3,000 machine hours to produce 1,000 units. Actual production was 1,067 units and the standard machine hours required for that production was 3,200. Actual fixed overhead was $8,450. McGraw-Hill/Irwin Copyright © 2008, The McGraw-Hill Companies, Inc. 11-59 Fixed Overhead Variances – Example Actual Fixed Overhead Incurred Fixed Overhead Budget $8,450 $9,000 Fixed Overhead Applied Budget variance $550 favorable McGraw-Hill/Irwin Copyright © 2008, The McGraw-Hill Companies, Inc. 11-60 Fixed Overhead Variances – Example Actual Fixed Overhead Incurred Fixed Overhead Budget Fixed Overhead Applied (SC) SH × SR 3,200 hours × $3.00 per hour $8,450 Budget variance $550 favorable McGraw-Hill/Irwin $9,000 $9,600 Volume variance $600 favorable Copyright © 2008, The McGraw-Hill Companies, Inc. 11-61 Quick Check Yoder Enterprises’ actual production for the period required 2,100 standard direct labor hours. Actual fixed overhead for the period was $14,800. The budgeted fixed overhead was $14,450. The predetermined fixed overhead rate was $7 per direct labor hour. What was the budget variance? a. $350 U b. $350 F c. $100 F d. $100 U McGraw-Hill/Irwin Copyright © 2008, The McGraw-Hill Companies, Inc. 11-62 Quick Check Budget Enterprises’ variance Yoder actual production for the = Actual fixed overhead – Budgeteddirect fixed overhead period required 2,100 standard labor hours. Actual fixed overhead for the period = $14,800 – $14,450 was $14,800. The budgeted fixed overhead $350 U was= $14,450. The predetermined fixed overhead rate was $7 per direct labor hour. What was the budget variance? a. $350 U b. $350 F c. $100 F d. $100 U McGraw-Hill/Irwin Copyright © 2008, The McGraw-Hill Companies, Inc. 11-63 Quick Check Yoder Enterprises’ actual production for the period required 2,100 standard direct labor hours. Actual fixed overhead for the period was $14,800. The budgeted fixed overhead was $14,450. The predetermined fixed overhead rate was $7 per direct labor hour. What was the volume variance? a. $250 U b. $250 F c. $100 F d. $100 U McGraw-Hill/Irwin Copyright © 2008, The McGraw-Hill Companies, Inc. 11-64 Quick Check Volume variance Yoder Enterprises’ actual production for = Budgeted fixed overhead – (SH SR) the period required 2,100 standard direct labor $14,450fixed – (2,100 hours $7 hour) hours. =Actual overhead forper the period = $14,450The – $14,700 was $14,800. budgeted fixed overhead = $250 F The predetermined fixed was $14,450. overhead rate was $7 per direct labor hour. What was the volume variance? a. $250 U b. $250 F c. $100 F d. $100 U McGraw-Hill/Irwin Copyright © 2008, The McGraw-Hill Companies, Inc. 11-65 Quick Check Summary Actual Fixed Overhead Incurred Fixed Overhead Budget Fixed Overhead Applied SH × FR 2,100 hours × $7.00 per hour $14,800 Budget variance $350 unfavorable McGraw-Hill/Irwin $14,450 $14,700 Volume variance $250 favorable Copyright © 2008, The McGraw-Hill Companies, Inc. 11-66 Volume Variance – A Closer Look Volume Variance arises when standard hours allowed for actual output differs from the denominator activity. Unfavorable when standard hours < denominator hours McGraw-Hill/Irwin Favorable when standard hours > denominator hours Copyright © 2008, The McGraw-Hill Companies, Inc. 11-67 Volume Variance – A Closer Look Volume Variance Does not measure overor under spending Results when standard hours actualtreating output differs Itallowed resultsforfrom fixed from the denominator activity. overhead as if it were a variable cost. Unfavorable when standard hours < denominator hours McGraw-Hill/Irwin Favorable when standard hours > denominator hours Copyright © 2008, The McGraw-Hill Companies, Inc. 11-68 Fixed Overhead Variances – A Graphic Approach Let’s look at a graph showing fixed overhead variances. We will use ColaCo’s numbers from the previous example. McGraw-Hill/Irwin Copyright © 2008, The McGraw-Hill Companies, Inc. 11-69 Fixed Overhead Variances – A Graphic Approach Cost $9,000 budgeted fixed OH Activity 3,000 Hours Expected Activity McGraw-Hill/Irwin Copyright © 2008, The McGraw-Hill Companies, Inc. Fixed Overhead Variances – A Graphic Approach 11-70 Cost $9,000 budgeted fixed OH { $550 Favorable Budget Variance $8,450 actual fixed OH Activity 3,000 Hours Expected Activity McGraw-Hill/Irwin Copyright © 2008, The McGraw-Hill Companies, Inc. Fixed Overhead Variances – A Graphic Approach 11-71 Cost $600 Favorable Volume Variance { $550 { Favorable 3,200 machine hours × $3.00 fixed overhead rate $9,600 applied fixed OH $9,000 budgeted fixed OH $8,450 actual fixed OH Budget Variance 3,000 Hours Expected Activity McGraw-Hill/Irwin Activity 3,200 Standard Hours Copyright © 2008, The McGraw-Hill Companies, Inc. 11-72 Overhead Variances and Under- or Overapplied Overhead Cost In a standard cost system: Unfavorable variances are equivalent to under-applied overhead. Favorable variances are equivalent to over-applied overhead. The sum of the overhead variances equals the under- or over-applied overhead cost for a period. McGraw-Hill/Irwin Copyright © 2008, The McGraw-Hill Companies, Inc. 11-73 Summary of Variance Analysis DM, DL, VOH: AC (APAQ) SPAQ SC (= SPSQ)=FB |___________________|_________________| DMPV, DLRV,VOHSV DMQV, DLEV, VOHEV FOH: AC FOH FB SC(=SRSH) |___________________|_________________| FOHBV FOHVV McGraw-Hill/Irwin Copyright © 2008, The McGraw-Hill Companies, Inc. 11-74 A Summary of Variance Analysis Variance = Actual cost (AC) – Standard Cost (SC) = AQ (AP – SP) + (AQ – SQ) SP We have favorable (F) or unfavorable (U) variance as follows: •Total Variance is F (U) if AC < (>) SC; •Price (Rate, Spending) Variance is F (U) if AP < (>) SP; •Quantity (Efficiency) Variance is F (U) if AQ < (>) SQ. McGraw-Hill/Irwin Copyright © 2008, The McGraw-Hill Companies, Inc. Variance Analysis and Management by Exception 11-75 How do I know which variances to investigate? McGraw-Hill/Irwin Larger variances, in dollar amount or as a percentage of the standard, are investigated first. Copyright © 2008, The McGraw-Hill Companies, Inc. Exhibit 10-9 11-76 A Statistical Control Chart Warning signals for investigation Favorable Limit • Desired Value • • • • • • Unfavorable Limit 1 2 3 4 5 6 7 • 8 • 9 Variance Measurements McGraw-Hill/Irwin Copyright © 2008, The McGraw-Hill Companies, Inc. 11-77 Advantages of Standard Costs Management by exception Promotes economy and efficiency Advantages Simplified bookkeeping McGraw-Hill/Irwin Enhances responsibility accounting Copyright © 2008, The McGraw-Hill Companies, Inc.