This article explains what the ‘golden rule of economics’ means, why applying it usually depends on management accounting, how to break profit growth into practical levers, and where to monitor the figures without collecting them manually every month.
Contents:
What is the golden rule of economics?
The term causes confusion because different branches of economics have their own ‘golden rules.’ Macroeconomics, for example, has the golden rule of saving in the Solow model.
In company management, the ‘golden rule of economics’ more often refers to a benchmark relationship between growth rates. One common form is:
Gp > Gr > Ga > 100%, where Gp is the profit growth index, Gr is the revenue (sales volume) growth index, and Ga is the asset growth index.
The rule is a quick diagnostic guide when you compare equivalent periods and profit in the base period is positive. It does not explain causes, but it quickly shows whether a business is increasing turnover without improving its economics or scaling with improving efficiency.
How should a business use the rule?
The golden rule of economics is no magic formula for success. It is a sequence of questions to ask of the numbers. If revenue rises but profit does not, there may be leaks: discounts, higher costs, poor control of extra work, growing fixed expenses, or accounting errors.
First, agree on the terms. Under accrual-based management accounting, revenue belongs to the period in which work or services are performed; receiving an advance does not, by itself, mean revenue has been recognized. This is crucial in construction: payments in the bank account can make a month look ‘profitable’ even though the revenue has not yet been recognized.
Profit also has several meanings. Management decisions usually require three levels: contribution margin (revenue minus variable costs), operating profit (after administrative and selling expenses), and net profit (after all expenses and taxes). Confusing these levels makes the golden rule of economics give misleading signals.
For a quick refresher on the basics, see 101’s articles on revenue (Russian) and the difference between revenue and profit (Russian).
Why should profit grow faster than revenue?
If profit grows more slowly than revenue, the business becomes harder to run: earning the same amount of net profit requires more work, more purchases, more people on site, and more management time. The risk of management mistakes rises with scale while the safety margin shrinks.
Consider a simple example common in renovation and construction.
| Metric | Year 1 | Year 2 |
|---|---|---|
| Revenue | 10,000,000 ₽ | 12,000,000 ₽ |
| Net profit | 1,000,000 ₽ | 1,050,000 ₽ |
| Growth | — | Revenue +20%; profit +5% |
| Net profit margin | 10% | 8.75% |
From the outside, this looks like growth: revenue is up 20%. In substance, the company is generating more turnover for almost the same net profit. That can easily create cash pressure: a lot of money is tied up in work, with little room to maneuver. The issue is explored in 101’s article on cash gaps (Russian).
Why does this happen? There is usually more than one cause. Common reasons for falling profit in construction and finishing businesses include:
- costs have risen but prices and contract terms have not been updated;
- the share of low-margin projects has increased, quietly shifting the portfolio;
- discounts and ‘free’ extra work have become routine;
- fixed expenses (office, advertising, management staff) have grown faster than contribution margin.
A useful practice is to examine the economics of each project: revenue, variable costs, contribution margin, then overhead. 101 explains this approach in its article on contribution margin (Russian) and in an article on separating price from cost.
How can you make profit grow faster than revenue?
There are two ways to meet the golden rule of economics: earn more profit per unit of revenue and keep expenses under control as the business scales. It sounds obvious, but in practice it requires disciplined accounting and specific decisions about each lever.
Here is a practical process for construction, renovations, project work, and services. You can manage it in spreadsheets, 1C, a CRM, or the 101 app; the tool matters less than consistent rules and regular review. Step 1. Define what counts as revenue. Link it to acceptance certificates and closing documents, and separate payments from revenue recognized in the period. For reference, see ‘What Is Revenue?’ (Russian).
Step 2. Separate variable and fixed costs. Variable costs increase with the volume of work (materials, tradespeople, delivery); fixed costs include the office, software services, advertising, and management salaries. Without this split, you see only the total expense amount, not its structure.
Step 3. Start calculating contribution margin by project. This quickly shows where the business actually earns money. The formula is simple: contribution margin = revenue − variable costs.
Step 4. Check the terms for additional work. In construction, profit is often lost through unclear work boundaries and unpaid extras. If changes are routine, make them a paid part of the job: agree on them, document them, and include them in acceptance records.
Step 5. Group overhead into a clear system: funds, expense categories, and limits. When you can see expenses by category, it is easier to cut waste and explain the rules to your team. In 101, this is connected to financial tracking of income and expenses.
Step 6. Review the growth rates of profit, revenue, and assets once a month (or at least your working-capital commitments: materials in stock, receivables, and equipment). The rule works over time; one monthly figure does not show a trend.
For a deeper look at managing profit, see 101’s articles on tracking income and expenses (Russian), expense tracking (Russian), and business efficiency analysis (Russian).
Where can you track revenue, profit, and growth rates?
To use the golden rule of economics, you need two things: a single source of data and comparable reporting periods. Compare revenue, profit, and assets across periods of equal length. When the figures are scattered across chats, managers’ spreadsheets, paper acceptance certificates, and a site supervisor’s memory, applying the rule becomes guesswork.
Common places to review the figures include:
- Financial statements. Useful for final results and taxes, but less useful for managing individual projects and making timely decisions.
- Management spreadsheets. Effective while there are few projects and data-entry discipline is strong. As the team grows, so does the risk of formula and entry errors.
- A management accounting system. Useful when data comes from business processes: payments, purchases, acceptance certificates, accruals, and funds.
For construction and finishing companies, the link between ‘project → money → documents’ matters. In the 101 app, each project records receipts, acceptance certificates, and purchases. The system then shows the project balance, profit, markup by category, and monthly revenue trend. There is also an ‘Analytics’ section (Russian), which brings together key figures from project events.
To see the company-wide picture, include overhead: office costs, advertising, managers’ salaries, and software services. In 101, expanded PRO+ analytics and the ‘Company Fund’ help account for these costs so rising revenue does not create a false sense of success.
If you would like to see how to track revenue and profit by project using your own figures, book a demo.
The conclusion is simple: the golden rule of economics calls for greater efficiency, not just more sales. If profit outpaces revenue, the business becomes stronger even at the same volume of work. If revenue outpaces profit, check margins, direct costs, and overhead, then establish regular accounting.