Five numbers to track if you never studied finance

Revenue is the number every owner knows, because it is the one that gets mentioned. It is also the least informative of the figures that matter, because it says nothing about what the revenue cost to produce. A business can raise revenue by discounting until the margin disappears, by adding a product line that loses money, or by taking on customers who consume more support than they pay for. All three look like progress in the only number being watched.

What makes this specifically hazardous is that revenue growth also generates confidence, and confidence produces commitments — a hire, a lease, a stock order. By the time the underlying problem appears in the bank balance, those commitments are fixed. The remedy is not sophisticated analysis; it is four more numbers, each answering a question revenue cannot. None of them requires accounting training, and all of them come from records you already keep.

Gross margin is revenue minus the direct costs of delivering what you sold, expressed as a percentage of revenue. Direct costs are the ones that exist because the sale happened: goods, materials, packaging, delivery, payment charges, commission, per-job labour. Rent and salaries stay out. If you sold ₹5,00,000 last month and the direct costs came to ₹3,00,000, gross margin is ₹2,00,000, or 40%. That percentage is the share of every rupee of revenue available to cover everything else and produce a profit.

With several products, calculate it per product as well as overall, because the blended figure hides the interesting part. A common and invisible pattern is a business whose overall margin is slowly falling because its fastest-growing product is its worst-margin one. Total revenue rises, total margin does not, and nothing in the revenue figure shows it. Watch the direction over months rather than the level in any single month: a margin drifting down usually means costs rose without a price change, or discounting has become habitual, and both are easier to fix early.

Operating expenses are what the business costs to exist whether or not you sell anything — rent, salaries, utilities, subscriptions, insurance, professional fees, loan interest. The number worth knowing is the monthly total, because it converts your gross margin into a required volume: gross margin in rupees must exceed operating expenses before there is any profit. Owners who know this figure precisely make different decisions about hiring and leases, because they can see immediately what additional sales a new commitment demands.

Cash balance is the simplest of the five and the one that decides whether you continue. Watch the actual bank balance on the same day each week, and record it, because the series matters more than the snapshot. Alongside it, hold one derived figure: how many months of operating expenses the current balance would cover with no income. That number turns an abstract balance into a deadline, and it is the single most clarifying figure available to an owner deciding whether a problem is urgent or merely annoying.

Acquisition cost is what you spend to gain one new customer: all the money spent on getting customers in a period — advertising, promotions, samples, commissions, the discount used to win a first order — divided by the number of new customers gained in that period. Do it monthly, and be careful to count new customers rather than orders, since repeat orders from existing customers were not acquired by that spending.

The comparison that matters is between acquisition cost and gross margin per customer. If a customer generates ₹800 of gross margin on their first purchase and costs ₹1,200 to acquire, that customer is only worthwhile if they return, and how often they return is therefore a question you now have to answer rather than assume. This is where the honest limits appear. Attribution is genuinely hard: a customer who saw a post, walked past the shop and then arrived after a friend's recommendation cannot be assigned cleanly to one cause, and any tidy per-channel figure involves assumptions worth stating. The total figure — everything spent divided by everyone gained — is cruder and considerably more reliable than the per-channel breakdown, which is why it is the one to trust when the two disagree.

These five are worth little as a quarterly report and a great deal as a weekly rhythm, because the value is in noticing direction early. Pick a fixed time — the same half hour each week — and write down five figures by hand or in one small sheet: revenue for the week, cash balance today, and monthly gross margin, operating expenses and acquisition cost updated as the month progresses. Keep the history in one place so each entry sits under the last one.

The reason to write them rather than look them up is that writing forces comparison with the previous line, and comparison is where the information is. A single week's revenue means almost nothing; the fourth consecutive week of falling margin means something specific. Owners who do this reliably describe the same effect: they stop being surprised. The problems arrive at the same rate but announce themselves weeks earlier, when the available responses are still cheap. Add a sixth column for one sentence on anything unusual — a delayed payment, a supplier price rise — because in three months you will not remember what caused the anomaly.

They describe what happened, not why. A falling margin is visible in the number and its cause is not: the figure cannot distinguish a supplier price rise from creeping discounts from a shift in product mix, and finding out means looking at the underlying transactions. They are also lagging — they report a month that has already closed, and the decisions that produced it were made earlier. That is an argument for watching direction rather than reacting to levels, and for pairing them with the forward-looking view of cash that a rolling forecast provides.

They also do not add up to a valuation, a forecast, or advice about what to do with your money. Which of several possible responses to a falling margin is right for your business depends on things no metric contains, and decisions about borrowing, tax and investment belong with a qualified professional who can see your full position. What the five do deliver is the ability to ask a specific question instead of a vague one. "Why did gross margin fall four points while revenue rose?" is answerable. "Why does it feel like we are working harder for less?" is not, and it is the question owners without these numbers are stuck asking.