CAT / FIA FMA Syllabus C. Cost Accounting Techniques - Under and over absorption of overheads - Notes 22 / 23
Under and over absorption of overheads
If we absorb MORE overheads than we should have, this is known as over absorption
If we absorb LESS overheads than we should have, this is known as under absorption
Overheads absorbed = OAR x actual level of activity
Over-absorption (over-recovery) = Overheads absorbed is MORE than Actually Incurred
Under-absorption (under-recovery) = Overheads absorbed is LESS than Actually incurred
Illustration
Budgeted fixed overheads | $120,000 |
Budgeted machine hours | 30,000 |
Actual machine hours worked | 31,000 |
Actual fixed overhead incurred | $125,000 |
Solution
Step 1: Calculate OAR
OAR = Budgeted fixed overheads / Budgeted machine hours
OAR = $120,000 / 30,000 hours = $4 per hourStep 2: Calculate the Overheads absorbed
= Actual machine hours worked x OAR
= 31,000 x $4 per hour = $124,000Step 3: Is it over or under-absorbed?
Overheads absorbed - Actual fixed overhead incurred
$124,000 - $125,000 = $1,000 under absorption(because we absorbed $1,000 LESS than was actually incurred)