Example
On a $2,000 job with $700 of materials and $500 of labor, COGS is $1,200 and gross margin is $800.
Also called cost of sales, direct costs, or job costs.
What it means in practice
COGS counts only what a job consumed. Timber, hardware, rentals, the hours worked on site and any subcontractor invoice are in. Your van insurance, your phone and your accountant are not; those are overhead.
The split matters because gross margin is the price minus COGS. Mixing overhead into it makes every job look less profitable than it is, and mixing it out makes the business look more profitable than it is.
Where it shows up on the paperwork
COGS never appears on a client document. It is your side of the line: what the job consumed, sitting behind the price you quoted.
What goes wrong
- Counting your own drawings as COGS on one job and as overhead on the next, so no two jobs can be compared.
- Leaving out waste. The drywall you cut wrong is a cost of the job whether or not it went on the wall.
- Forgetting subcontractor invoices, which are direct cost even though someone else did the work.
Common questions
What counts as cost of goods sold for a trade business?
Materials, waste, rentals, disposal, the hours worked on site and any subcontractor invoice for that job. If the job would not have incurred it, it is not COGS.
Is labor part of COGS?
The labor that went into the job is. Time spent quoting, driving between jobs or doing your books is overhead, because no single job pays for it directly.