Rent and payroll are obvious overhead. A number of real, recurring costs are easy to underestimate or forget entirely when totaling up overhead — and forgetting them leads to underpriced products and an inaccurate profitability picture.
Commonly overlooked overhead
- Payment processing fees, which quietly add up as a percentage of every transaction
- Software subscriptions accumulated over time, some of which may no longer be actively used
- Insurance premiums beyond the obvious general liability policy — professional liability, equipment coverage, cyber insurance
- Loan interest, which is a real ongoing cost separate from the loan principal
- Owner’s own reasonable salary, if it’s being informally skipped or underpaid rather than budgeted as a real cost
Why these specifically get missed
Costs that are small individually or paid infrequently (annual insurance renewals, for example) are easy to forget when building a monthly overhead picture from memory rather than from an actual expense list.
A simple check
Pull twelve months of actual bank and card statements once and categorize every recurring charge — it’s the most reliable way to catch overhead costs that get missed when estimating from memory.