Operating Expenses

For a long time a company's spending was one number. At the end of the month someone added up everything that left the bank account and reported that the company had spent $75,000. The total was correct and useless for deciding what to do next, because two different kinds of money sat in the same line. Some of it rises the moment one more customer signs up; the rest goes out at the same size whether the customer count doubles or halves.

Cost meetings kept landing in the same place. The month came in at a loss, one person suggested trimming the server bill, another suggested pausing ads, and the two proposals sat there with equal weight until whoever argued hardest won. Nobody mentioned that three quarters of the spending was payroll, because the table didn't show it.

Operating expenses exist to split that lump in two. Money that went directly into producing what was sold gets grouped as cost of goods sold (COGS), the direct cost of generating revenue, and everything else that keeps the company running lands here. Once the split exists, so do two questions. Whether anything is left after serving one more customer is answered by the first bucket; how much the company needs each month to stay its current size is answered by this one.

Operating expenses sit in the income statement as a block directly under cost of goods sold. Revenue minus COGS gives gross profit, and gross profit minus operating expenses gives operating profit. This bucket is the last gate before anyone can say the core business makes money.

What goes in falls into four groups.

1. People costs — salaries, the employer's share of insurance and payroll taxes, and bonuses. Everyone who builds the product and everyone who sells it is in here, and at a company whose main asset is its staff this group alone runs 60 to 80 percent of the total.
2. Facilities — rent, building fees, leased equipment. This one doesn't creep up a little each time someone is hired; it jumps in a step when the company moves to a bigger office.
3. Sales and marketing — ad spend, events, sales commissions. It is the only one of the four where spending more this month moves next month's revenue, which is also why it gets cut first.
4. General and administrative — software subscriptions, accounting and legal fees, recruiting fees. Each line is small, but there are many of them, and unwatched they become where money leaks.

Pagedeck's numbers from last month make the shape concrete. Revenue was $90,000 and COGS $18,000, leaving gross profit of $72,000. Operating expenses came to $79,000: payroll $59,000, facilities $7,000, marketing $9,000, general and administrative $4,000. Operating profit was therefore negative $7,000.

The defining property of this bucket is simple: it does not rise the moment customers do. When paying teams went from 1,000 to 1,200, the server bill and the payment fees followed, but rent and salaries did not move. That is why holding operating expenses flat while revenue climbs pulls the ratio down on its own. At $90,000 of revenue, $79,000 of operating expenses is 88 percent. Leave the spending untouched, grow revenue to $135,000, and the same money is 58 percent. A path out of a loss always has two branches rather than one.

The boundary with capital expenditure (CAPEX) is the part people get wrong. Money spent on an asset the company will use for several years is not booked as an expense in the month it leaves the account; it is spread across the years of use. Buy thirty laptops at once and the bank account empties this month while the income statement shows a small slice each month for years.

There are three situations where someone reads this number out loud.

1. Counting how long the company lasts. Burn rate is the cash a company net loses each month, and operating expenses are most of it. With $1.15 million in the bank and $70,000 going out per month, runway is about sixteen months. Hire five more people so monthly spending reaches $90,000 and the same balance covers about twelve. That arithmetic is what a hiring approval meeting is actually arguing about.
2. Comparing as a ratio. The absolute figure says nothing across companies, so it gets read as a percentage of revenue. Two companies both spending $75,000 a month are in different places if one has $150,000 of revenue and the other $60,000. The same holds group by group: 40 percent of revenue into marketing versus 10 percent are different businesses.
3. Deciding which bucket a cost belongs in. Book a support engineer's salary here and gross margin looks higher; book it as COGS and it looks lower. Because the placement changes the numbers investors read, the rule gets set once and left alone.

"We're planning 20 percent revenue growth this quarter with operating expenses flat."

Nobody new gets hired — the team delivers the growth at its current size.

"Shouldn't that line sit in COGS rather than operating expenses?"

A note that the placement changes the reported gross margin.

"Half of opex is payroll. If we don't touch that, there's nothing to cut."

Cost reduction is really a conversation about a hiring freeze or layoffs.

At Pagedeck this bucket is always the second item in the monthly close meeting. Grace puts the table on screen and walks through every line that moved, and whoever owns the line explains it. In a month where Ravi raised ad spend by $3,000, he brings the signups that money produced. In a month where Theo added servers, the check is whether that cost was booked as COGS instead.

The easiest mistake is treating operating expenses as something to minimize without limit. It is a number you subtract to get profit, so a smaller one obviously leaves more behind. But most of what sits in this bucket is people and demand generation. Stop the ads and freeze hiring and this quarter's operating profit improves immediately, while next quarter's incoming customers thin out and turning the ads back on doesn't restore the old level for months. The figure worth watching is not the total but what it costs to produce a given amount of revenue. When that is falling, a rising total is fine.

The other common error is assuming the month cash left the account is the month the expense lands. Bank statements and income statements feel like they should agree, but they follow different rules. Accrual accounting records an expense in the period the money was used for, not the day it moved. Pay $9,000 in January for an annual subscription and January's operating expenses include $750, with the rest spread across the following eleven months. Miss that and the January table looks like costs exploded.