How to Implement a Flexible Budget To compute variances that can help you understand why actual results differed from your expectations, creating a flexible budget is helpful. Aflexible budgetadjusts the master budget for your actual sales or production volume.For example, your master budget may have assumed that youd produce 5,000 units; however, you actually produce 5,100 units. The flexible budget rearranges the master budget to reflect this new number, making all the appropriate adjustments to sales and expenses based on the unexpected change in volume.To prepare a flexible budget, you need to have a master budget, really understand cost behavior, and know the actual volume of goods produced and sold.Consider Kira, president of the fictional Skate Company, which manufactures roller skates. Kiras accountant, Steve, prepared the overhead budget shown.

Skate had a great year; actual sales came to 125,000 units. However, much to the disappointment of Steve and Kira, the overhead budget report reported major overruns. For each category of overhead, Steve computed a variance, identifying unfavorable variances in indirect materials, indirect labor, supervisory salaries, and utilities.

Skates total overhead exceeded budget by $25,000. Steve made the elementary mistake of treating variable costs as fixed. After all, portions of overhead, such as indirect materials, appear to be variable costs. If Skate increased production from 100,000 units to 125,000 units, these variable costs should also increase.In other words, comparing the $60,000 actual cost of making 125,000 units to the $50,000 budgeted cost of making just 100,000 units makes no sense. Youre comparing apples and oranges.Instead, Steve should flex the budget to determine how much overhead he should have, assuming that the company makes 130,000 units.Separate fixed and variable costsSome costs are variable they change in response to activity levels while other costs are fixed and remain the same. For example, direct materials are variable costs because the more goods you make, the more materials you need.On the other hand, some overhead costs, such as rent, are fixed; no matter how many units you make, these costs stay the same. To determine whether a cost is variable or fixed, think about the nature of the cost.For Skate, an analysis indicates that indirect materials, indirect labor, and utilities are variable costs. On the other hand, supervisory salaries, rent, and depreciation are fixed. Steve recomputes variable costs with the assumption that the company makes 125,000 units.

In the original budget, making 100,000 units resulted in total variable costs of $130,000. Dividing total cost of each category by the budgeted production level results in variable cost per unit of $0.50 for indirect materials, $0.40 for indirect labor, and $0.40 for utilities.To compute the value of the flexible budget, multiply the variable cost per unit by the actual production volume. Here, the figure indicates that the variable costs of producing 125,000 should total $162,500 (125,000 units x $1.30).Compare the flexible budget to actual resultsThe next step is to combine the variable and fixed costs in order to prepare a new overhead budget report, inserting the new flexible budget results into the overhead budget report.

Look at that! After you adjust for the change in production level, Skates variance is suddenly favorable. Actual overhead of $355,000 was $7,500 less than the $362,500 flexible budget. What Is Overhead Variance? Managers acknowledge that it is impossible to exactly attain budgeted estimates, such as targeted profits. A variance is a difference between the actual figures and budgeted estimates. Overhead variance arises due to the differences between actual overhead variances and the budgeted or the absorbed variances. Actual overhead variances are those that have been incurred and can be known at the end of a particular accounting period after the accounts have been prepared. Absorbed overheads are overheads charged to a product based on a predetermined overhead rate, which is the standard overhead absorption rate.

Fixed Volume Overhead Variance

It measures the difference between the budgeted and the actual level of activity valued at the standard fixed cost per unit. The fixed overhead volume variance is obtained by subtracting actual units produced from budgeted units and then multiplying the result with standard fixed cost per unit. The standard fixed cost per unit is obtained by dividing the budgeted fixed overhead by the budgeted production. It can also be obtained by subtracting actual hours incurred in production from the budgeted hours and then multiplying the result with the standard fixed cost per hour. The variance can be favorable or adverse. It is favorable when the actual units produced are more than the budgeted units and adverse when the number of units produced are less than the budgeted.

Fixed Expenditure Overhead Variance

This is the difference between the budgeted fixed overhead expenditure and the actual fixed overhead incurred. It arises due to changes in the cost of fixed overhead during the period. Fixed overhead expenditure variance is calculated by subtracting the actual fixed overhead cost from the budgeted fixed overhead cost. It can be favorable when the budgeted fixed overhead is less than the actual fixed overhead or adverse when the actual costs are more than the budgeted.

Variable Efficiency Overhead Variance This is the difference between the actual and budgeted variable overhead costs that result from inefficient use of indirect materials and indirect labor. Variable overhead efficiency variance is calculated by subtracting the standard budgeted hours from the actual hours incurred, and then multiplying the result with the standard variable overhead rate. A favorable variance results when the actual hours used are less than the budgeted while an adverse variance results from use of more hours than the budgeted. Variable Overhead Expenditure Variance This compares the actual variable overhead for production achieved with the budgeted. It arises due to a fall or rise in overhead spending due to unexpected changes in prices, efficiency or inefficiency in the use of the variable overhead, inaccurate estimates of one or more items containing variable overhead and inadequate control of an item of an overhead cost. It is calculated by deducting the actual variable overhead incurred from a product of standard variable overhead rate and actual hours incurred.