When you look at a company's financial health, the first number you might see is net income, often called the "bottom line." It tells you if a company made a profit after all expenses are paid. But what if you want to know how the core business is performing, separate from its financing decisions or accounting methods? For that, analysts often turn to EBITDA.

EBITDA strips out certain expenses to give a clearer view of a company's operational profitability. Let's break down what gets added back to the earnings:

• Interest: Payments on debt are related to how a company is financed, not how well its core operations are running. By removing interest, you can compare companies with different debt levels more fairly.
• Taxes: Tax rates can vary widely based on location, government policies, and past performance. Removing them helps normalize comparisons between companies in different tax jurisdictions.
• Depreciation & Amortization: These are non-cash expenses. Depreciation accounts for the wear and tear on physical assets like machinery, while amortization spreads the cost of intangible assets (like patents) over time. Since no actual cash leaves the company for these expenses in the current period, excluding them can give a better sense of the cash being generated by operations.

There are two common ways to calculate EBITDA. The first, and most straightforward, starts with the company's net income and adds back the excluded items.

Alternatively, you can start from a company's operating income (also known as EBIT, or Earnings Before Interest and Taxes) and just add back the non-cash expenses.

Let's look at a simplified example for a construction company. This industry is capital-intensive, meaning it relies heavily on expensive equipment. Because of this, depreciation can be a very large expense on the income statement.

Using our formulas, we can calculate EBITDA:

• From Net Income: $187,500 (Net Income) + $50,000 (Interest) + $62,500 (Taxes) + $100,000 (D&A) = $400,000
• From Operating Income: $300,000 (Operating Income) + $100,000 (D&A) = $400,000

Notice how EBITDA ($400,000) is much higher than the Net Income ($187,500). It suggests the company's core operations are generating significant cash flow before accounting for financing, taxes, and the cost of past investments.

While useful, EBITDA is not a perfect metric. It has some important limitations that you need to be aware of. Critics argue that it can paint an overly optimistic picture of a company's financial health.

The biggest criticism is that it ignores capital expenditures (CapEx), which is the money a company spends to buy, maintain, or upgrade physical assets. A construction company might have a high EBITDA, but if it has to constantly spend huge sums on new bulldozers and cranes just to stay in business, it might not have as much cash available as EBITDA suggests.

EBITDA also overlooks changes in working capital, which is the difference between a company's current assets and current liabilities. A company needs cash to fund its day-to-day operations, and EBITDA doesn't capture this. For these reasons, it should never be used as a substitute for a comprehensive analysis of a company's cash flow statement.

Time to review what we've covered.

Now, let's test your understanding.

EBITDA is a powerful tool for quickly assessing a company's operating performance. By understanding what it includes, what it excludes, and its limitations, you can use it to make more informed financial judgments.