Why underapplied overhead matters to a first-time founder
If overhead is underapplied, product or job costs have absorbed too little of the factory’s shared spending. Margins may therefore look better than they are, and prices may be too low. The gap can also reveal lower production volume, higher utility bills, or an allocation rate based on unrealistic assumptions.
Examples of underapplied overhead
A manufacturer expects £120,000 of annual factory overhead across 20,000 machine hours, so it applies £6 per hour. It records 15,000 hours and assigns £90,000, but actual overhead reaches £110,000. The £20,000 difference is underapplied overhead and must be dealt with under the company’s accounting policy.
Common misunderstanding
It does not automatically prove waste or poor management. Actual costs can match the budget while fewer units are produced, leaving less activity over which to spread fixed overhead. It also differs from a cash shortage: this is a cost-allocation difference in the accounts, not the balance available to pay suppliers.
When to use it
Review it at each management reporting close when you manufacture goods or allocate shared production costs to jobs. Investigate the price, spending, efficiency, and volume causes before changing your overhead rate. A service business that does not apply manufacturing overhead may use other cost variances instead.