The Numbers Every Manager Should Be Able to Read
- Raffles Jakarta
- 2 days ago
- 9 min read
There is a moment most people who have sat in a budget meeting without a finance background will recognize. Someone puts a number on the screen, there's a debate about whether it's the right number and the meeting moves on based on a conversation that half the room didn't totally follow. No one admits to feeling this way. The proposal is accepted or rejected, and the manager who couldn’t follow the argument walks away having learned nothing except that he lost.
The usual explanation is that finance is technical and most managers are not accountants. It’s a comfortable explanation and mostly wrong. Few people in a general management position have to prepare a set of accounts. What they need is something different and much more attainable: the ability to read accounts critically, to understand the way the numbers that describe their unit are constructed and to understand when a figure is doing rhetorical work rather than analytical work.
Finance is not just another function. It is the language organizations use to make decisions, distribute resources, and settle disputes. In those discussions, a manager who does not speak the language of finance is biased. In those discussions, they have someone else talking for them.”
The three statements and the three different questions they answer
The starting point is not glamour. It is non-negotiable. 3 statements. They are not interchangeable and each one is answering a question that the other ones cannot answer. The income statement tells you if the business made money over a period. Revenues are matched with the expenses incurred to earn them under the accrual principle, which records economic events when they occur rather than when cash is exchanged.
A balance sheet is a snapshot of what the business owns and owes at a point in time. It is a photograph, not a film, and that is precisely why a healthy balance sheet at the end of the year tells you nothing of the eleven months before it. Investing activities Financing activities Operating activities: the cash flow statement shows you where the money really went. This requirement is a significant reason under international accounting standards: the other two statements can seem reassuring while a business is running out of money (IFRS Foundation, 2024).
The U.S. securities regulator provides a clear guide to all three and is still one of the better free introductions for the non-specialist (U.S. Securities and Exchange Commission, 2007). Most managerial confusion arises from the relationship between the three. Profit and cash are not the same thing and can diverge for long periods of time.
A company may be insolvent and profitable at the same time. The cruel thing is that this problem is most prevalent with fast-growing businesses, because fast growth consumes cash in inventory and receivables long before it pays cash back in collections.
Profit is a judgment; cash is an observation
The reported profit is a function of the choices you make. How quickly should you depreciate assets? When to recognize revenue? How to value inventory? What to capitalize vs. expenses? How to estimate provisions? All these are limited by accounting standards, and all still allow for judgment. There is no charge of dishonesty in this case. This passage is an explanation of how accrual accounting must necessarily work. Money is different.
It either did or it didn’t. Warren Buffett has made the point about one particular measure with more force than most academic writing manages, arguing in the shareholder letters of Berkshire Hathaway that references to earnings before interest, taxes, depreciation, and amortization should bring skepticism rather than reassurance, because depreciation is a real cost, representing assets that will eventually need replacing, and excluding it does not make the obligation disappear (Berkshire Hathaway, 2000).
A manager need not accept that position wholesale to learn the underlying lesson: when someone proposes a measure that removes some inconvenient cost, ask what the cost was and whether it has really gone away.
Working capital, or why growth can bankrupt you
Working capital is the least glamorous item on this list and the one likely to catch operational managers by surprise. The cash conversion cycle measures the time between a business’s cash outlays for inputs and cash inflows from customers. It is a mix of how long inventory sits, how long it takes customers to pay and how long the business itself takes to pay suppliers.
Every day of that cycle is a day when cash is locked up in operations rather than being available for anything else. For managers in Indonesia, this cycle is no abstraction. In many sectors, payment terms are long, especially where suppliers sell to large retail and distribution groups. A manager may have achieved a commercial win that damages the business by securing a volume increase without negotiating terms.
The World Bank’s country analysis has consistently pointed to access to working capital finance as a constraint on smaller Indonesian firms. This situation compounds the effect: the firms least able to absorb a lengthening cycle are often the ones being asked to absorb it (World Bank, 2026). The managerial discipline that follows is straightforward to state.
Any proposal that increases revenue should include an estimate of what it does to inventory, receivables, and payables. A manager who doesn’t provide that estimate of growth has only presented half a case.
Cost behavior and the question of what actually changes
The second body of knowledge is cost behavior and it is the one that most improves the quality of everyday decisions. The costs are not divided into big and little. They can be further divided into volume-changing and non-volume-changing. Contribution margin, which is revenue minus variable costs, tells a manager what each additional unit of activity actually contributes toward covering fixed costs.
Contribution is what is left after your fixed costs are paid. Profit is what remains after both your fixed and variable costs have been paid. This phenomenon is why businesses with high fixed costs and high contribution margins show dramatic swings in profitability from modest swings in volume. That's operating leverage and why two companies growing their top line the same way can have completely unique profit growth.
The science of incremental thinking is the practical application of this principle. So in almost every operational decision, the question is not what the total cost is, but what changes. But costs you have already incurred and cannot recover are irrelevant to your decision, however painful that is to accept, and the tendency to honor them is well documented in the behavioral literature.
Allocated overhead is equally treacherous. A product line that looks unprofitable once a share of head office cost has been allocated to it may be contributing substantially and cutting it may leave the same overhead spread over fewer lines.
What managers actually do, according to the evidence
Useful literature exists on the gap between what finance textbooks prescribe and what managers do. The most cited study of this type asked several hundred CFOs about their practices regarding capital budgeting, capital structure, and cost of capital. Adoption of business school techniques was found to be substantial but incomplete, with large firms being much more likely than small firms to use discounted cash flow methods and formal cost of capital estimates, and with payback period remaining widely used in spite of well-known theoretical shortcomings (Graham & Harvey, 2001).
What is not found is that practitioners lack knowledge. It is that judgment, simplicity, and organizational politics compete with theoretical rigor, and that a manager who understands both the technique and the reasons it is often set aside is better equipped than one who only understands one of the two. The one thing most often missing from the concept of a general manager, as I read that literature, is the cost of capital. Money comes with a price.
The capital you have for your project is capital that cannot be used for another project and the return you must earn on your project is not zero but the return that can be earned on another project with a similar level of risk. The most accessible route into this field for a non-specialist is still the publicly available data sets and teaching materials of Aswath Damodaran, and these are free (Damodaran, 2024).
Michael Jensen adds an organizational dimension to free cash flow work. He argued that managers with excess cash flows and weak external disciplines are likely to invest those cash flows in value-destroying growth, as growth expands the resources over which they have control (Jensen, 1986).
Any manager making a case for expansion should be able to answer the question that the argument poses: is the proposal justified by its returns or by the fact that it is bigger?
The measures that mislead
Finally, the last element of financial literacy is skepticism about measurement itself. Here the management accounting literature is more useful than the finance literature. The case for the balanced scorecard, Kaplan and Norton noted, started with the observation that financial measures are lagging indicators. They report the consequences of decisions made in the past.
This makes them excellent for accountability and poor for steering. Their proposal was to complement financial measures with measures related to the customer, internal process and learning and growth so that management attention is direprocess, the drivers of future performance instead of only the record of past performance (Kaplan and Norton, 1992). The solution came a decade later. Ittner and Larcker investigated how organizations actually used nonfinancial measurement and found that they mostly failed to ascertain whether the measures they selected had any demonstrable tie to the financial outcomes they aimed to drive.
Firms measured what was easy, assumed causality they had never tested, and in some cases, managed enthusiastically to use indicators that did not matter (Ittner and Larcker, 2003). The lesson for an individual manager commeasurement andabit. Ask what a given metric is a proxy for, what evidence there is that the proxy tracks the thing, and what behavior the metric will produce once people know they are measured by it. People will manipulate things that are easy to manipulate directly and hard to manipulate honestly.
What financial statements should every manager understand?
A general or senior operational manager should be able to do the following without help, as easily as possible. Read an income statement and distinguish between variable and fixed costs. Read a balance sheet, know how much cash is tied up in working capital and how that has moved. Look at a cash flow statement and see how much cash was generated from operations versus how much cash was raised from borrowing or selling assets. Determine contribution margin and break even volume. Describe the return generated by their unit on the capital consumed. Spot a sunk cost and forget it. What is an apportioned cost? And is it right? Before you use a metric, question it. The list is limited. It is also completely learnable in a year of structured study for most managers promoted from a technical discipline.
Where can I learn business finance in Jakarta while working?
This is where postgraduate study justifies itself, and it is worth being precise about what it does and does not provide. An MBA will not turn a general manager into a financial analyst; any program that promises this has misunderstood its own purpose. What a properly constructed curriculum does is supply the specific competencies listed above, in sequence and with assessment attached.
Financial Management covers capital structure, investment appraisal, and the cost of capital. Managerial Economics supplies the analysis of cost behavior, pricing, and market structure that sits underneath the numbers. Strategic Management is where those tools stop being exercises and become the basis of a defended position.
The program runs for one year and is taught entirely in English on Jalan M.H. Thamrin in Central Jakarta. It admits students four times a year: in January, April, July, and October.
It is offered on campus or in a hybrid format combining online study with scheduled campus sessions, which is relevant for this subject in particular: financial competence improves fastest when the person learning it has live numbers of their own to apply it to on Monday morning.
There is also a regulatory reason for Indonesian managers to take the course seriously. The financial services authority has increased expectations for financial literacy and disclosure, moving toward more reporting across the region (Otoritas Jasa Keuangan, 2026). Managers who can read what their organization publishes are better placed than those who cannot.
Conclusion
The point here is not that numbers are the most important thing in management. They aren't. It’s harder to judge people, and it matters more. The reason is more practical and more limited. Financial arguments are how organizations resolve disagreements.
If a manager is unable to take part in that argument, then their proposals will be judged by those who can, by criteria they do not fully understand, in meetings they are present at but useless in. No material described here is beyond a capable person with a year of structured attention.
What it takes is seeing that the discomfort in that budget meeting was information, not embarrassment, and that the remedy is instruction, not another quiet year of hoping the subject stays off the agenda.
Arman PourEisa
Marketing Head
References
Berkshire Hathaway. (2000). Chairman's letter to the shareholders of Berkshire Hathaway Inc. https://www.berkshirehathaway.com/letters/2000pdf.pdf
Damodaran, A. (2024). Damodaran online: Data, tools, and teaching materials. Stern School of Business, New York University. https://pages.stern.nyu.edu/~adamodar/
Graham, J. R., and Harvey, C. R. (2001). The theory and practice of corporate finance: Evidence from the field. Journal of Financial Economics, 60(2), 187 to 243. https://www.sciencedirect.com/science/article/pii/S0304405X01000447
IFRS Foundation. (2024). IAS 7 statement of cash flows. https://www.ifrs.org/issued-standards/list-of-standards/ias-7-statement-of-cash-flows/
Ittner, C. D., and Larcker, D. F. (2003). They are coming up short on nonfinancial performance measurement. Harvard Business Review. https://hbr.org/2003/11/coming-up-short-on-nonfinancial-performance-measurement
Jensen, M. C. (1986). Agency costs of free cash flow, corporate finance, and takeovers. American Economic Review, 76(2), 323 to 329. https://www.jstor.org/stable/1818789
Kaplan, R. S., and Norton, D. P. (1992). The balanced scorecard: Measures that drive performance. Harvard Business Review. https://hbr.org/1992/01/the-balanced-scorecard-measures-that-drive-performance
Otoritas Jasa Keuangan. (2026). Indonesia Financial Services Authority. https://www.ojk.go.id/en/Default.aspx
Raffles Jakarta. (2026a). Master of Business Administration. https://www.raffles-indonesia.com/mba
Raffles Jakarta. (2026b). Think bigger: The Raffles Jakarta MBA 2026. https://www.raffles-indonesia.com/think-bigger-mba-jakarta
Raffles Jakarta. (2026c). Frequently asked questions. https://www.raffles-indonesia.com/faq
U.S. Securities and Exchange Commission. (2007). Beginners' guide to financial statements. https://www.sec.gov/reportspubs/investor-publications/investorpubsbegfinstmtguide
World Bank. (2026). Indonesia overview. https://www.worldbank.org/en/country/indonesia/overviewtools,
