In: Accounting
Lambda Company, which produces tool boxes, uses a standard cost system and carries all inventories at standard. The standard manufacturing overhead costs per switch are based on direct labour hours and are shown below: Variable overhead (5 hours @ $12 per direct manufacturing labour hour) $ 60 Fixed overhead (5 hours @ $15* per direct manufacturing labour hour) 75 Total overhead per box $135 *Based on capacity of 200,000 direct manufacturing labour hours per month. The following information is available for the month of December: • 46,000 boxes were produced although 40,000 boxes were scheduled to be produced. • 225,000 direct manufacturing labour hours were worked at a total cost of $5,625,000. • Variable manufacturing overhead costs were $2,750,000. • Fixed manufacturing overhead costs were $3,050,000.
Calculate:
The variable overhead spending variance for December
The variable manufacturing overhead efficiency variance for December
The fixed manufacturing overhead spending variance for December
The fixed overhead production volume variance for December was
What amount should be credited to the allocated manufacturing overhead control account for the month of December?
Under the 2-variance method, the flexible budget variance for December was
Under the 3-variance method, the spending variance for December was
VARIABLE OVERHEAD SPENDING VARIANCE
= actual total variable overhead incurred - budgeted variable overhead based on actual input
= (AP × AQ) - (SP× AQ)
Actual manufacturing variable overhead is given = 2750000
Budgeted variable overhead based on actual input = 225000 (Labour hous) × 12 (Labour hour rate)
= 2700000
= 2750000 - 270000 = 50000 unfavourable
VARIABLE MANUFACTURING OVERHEAD EFFICIENCY VARIANCE
Budgeted variable overhead based on actual inputs - standard variable overhead allowed for production
(AQ × SP) - (SQ × SP)
(AQ × SP) = 225000 × 12 = 2700000
(SQ × SP) = (46000 × 5) × 12 = 2760000
2700000 - 2760000 = - 60000 favourable
FIXED MANUFACTURING OVERHEAD SPENDING VARIANCE
Actual fixed overhead incurred - budgeted fixed overhead
3050000 - 3375000 = -325000 favourable
FIXED OVERHEAD PRODUCTION VOLUME VARIANCE
Budgeted fixed overheads - standard fixed overhead applied
3000000- (15 × 225000) = 375000 favorable