8-33
3. The underallocated variable manufacturing overhead was $825,000 and overallocated
fixed overhead was $2,025,000. The flexible-budget variance and underallocated overhead are
4. The choice of the denominator level will affect inventory costs. The new fixed
manufacturing overhead rate would be $17,000,000 ÷ 1,360,000 = $12.50 per machine-hour. In
turn, the allocated amount of fixed manufacturing overhead and the production-volume variance
would change as seen below:
1,125,000 × $12.50 =
$14,062,500
$100,000 U $2,937,500 U*
Flexible-budget variance Prodn. volume variance
$3,037,500 U
Total fixed overhead variance
*Alternate computation: (1,360,000 – 1,125,000) × $12.50 = $2,937,500 U
The major point of this requirement is that inventory costs (and, hence, income determination)
can be heavily affected by the choice of the denominator level used for setting the fixed
manufacturing overhead rate.