The Basic EBITDA Formula

EBITDA is calculated by taking net income and adding back four specific items: interest expense, taxes, depreciation, and amortization. The formula is:

Net Income + Interest + Taxes + Depreciation + Amortization = EBITDA

You start with the bottom line of a company's income statement — the profit or loss after all expenses have been paid — then reverse out the four non-cash or financing items that don't reflect operating performance. This gives you a picture of what a business actually earned from its core operations, before debt structure and accounting methods change the picture.

The numbers you need are all on the company's financial statements. If you're calculating EBITDA for your own business, you'll pull them from your accounting records or tax return. If you're analyzing someone else's company, you'll find them in their annual report or 10-K filing.

Key Takeaways

  • EBITDA starts with net income from the income statement, then adds back interest, taxes, depreciation, and amortization in that order.
  • Depreciation and amortization are non-cash expenses, meaning no money actually left the business, so they're added back to show true cash-generating ability.
  • Interest and taxes are added back because they depend on how a company is financed and taxed, not on how well its operations perform.
  • You can verify your calculation by checking it against the cash flow statement — EBITDA should roughly match operating cash flow plus changes in working capital.

Where to Find Each Number on Financial Statements

Net Income appears at the bottom of the income statement, labeled as "Net Income," "Net Profit," or "Bottom Line." This is the starting point for every EBITDA calculation.

Interest Expense is usually listed separately on the income statement, often under "Other Income and Expenses" or "Financial Expenses." If a company has multiple debt instruments, interest may be broken out by type, but you add all of it back.

Taxes are shown as "Income Tax Expense" or "Provision for Income Taxes" on the income statement. Use the actual tax expense recorded, not the tax rate. This is the dollar amount the company paid or accrued in taxes.

Depreciation and Amortization may appear on the income statement itself, or you may need to find them on the cash flow statement under "Operating Activities." Many companies list them together as "D&A." If they're split between operating and non-operating sections, add both back.

A Worked Example

Suppose a small manufacturing company has these numbers from its annual income statement:

Net Income$150,000
Interest Expense$25,000
Income Tax Expense$40,000
Depreciation$60,000
Amortization$15,000

The calculation is: $150,000 + $25,000 + $40,000 + $60,000 + $15,000 = $290,000 EBITDA.

This tells you the company generated $290,000 from its core business operations before paying interest on debt, paying taxes, and accounting for the wear on its equipment and intangible assets. That's a much different picture than the $150,000 net income, because the net income number was reduced by $140,000 in items that don't reflect how hard the business is actually working.

Why You Add Back Depreciation and Amortization

Depreciation and amortization are non-cash expenses. The company didn't write a check for them in the period they were recorded. Instead, they're accounting entries that spread the cost of an asset over its useful life. A machine that costs $100,000 and lasts ten years gets depreciated at $10,000 per year, but the company paid the full $100,000 when it bought the machine, years earlier.

Because these expenses reduce reported profit but don't reduce cash, they distort how much cash the business actually generated. Adding them back shows what the business earned before accounting adjustments. Two companies with identical operations but different depreciation schedules would show very different net incomes — but the same EBITDA.

Why You Add Back Interest and Taxes

Interest and taxes are added back because they depend on how a company is financed and structured, not on how well it operates. A company with a lot of debt pays more interest than an identical company with less debt. A company in a high-tax jurisdiction pays more tax than one in a low-tax jurisdiction. These differences don't reflect operational performance.

By adding them back, EBITDA lets you compare the operating strength of two companies regardless of their capital structure or tax situation. This is especially useful when comparing a company to its competitors, or when evaluating whether a business is worth buying.

Common Mistakes When Calculating EBITDA

Forgetting to add back all depreciation and amortization. Some companies record depreciation in multiple places on the income statement — operating depreciation and depreciation on assets held for sale, for example. You must add back all of it. Check the cash flow statement to make sure you haven't missed any.

Using the wrong tax number. Use the income tax expense recorded on the income statement, not the company's tax rate or the taxes it actually paid in cash. These can be different because of timing differences and deferred tax accounts. The expense is what reduced reported profit, so it's what you add back.

Including one-time or non-operating items. EBITDA is meant to show recurring operating earnings. If the income statement includes a one-time gain on the sale of a building or a loss from a discontinued division, some analysts remove these before calculating EBITDA. There's no single rule — just be consistent and document what you did.

Confusing EBITDA with operating cash flow. They're related but not the same. Operating cash flow includes changes in working capital (accounts receivable, inventory, payables) that EBITDA does not. EBITDA is a profit measure; operating cash flow is a cash measure.

Frequently Asked Questions

What if a company has no interest expense or no taxes?

Add back zero for that line. A startup with no debt has no interest expense. A company with large losses may have no tax expense. The formula still works — you're just adding back nothing for that item. EBITDA will be lower, but the calculation is still valid.

Should I add back stock-based compensation?

Not in the standard EBITDA formula. Stock-based compensation is an operating expense, not a financing or accounting adjustment. Some analysts calculate "Adjusted EBITDA" and add back stock compensation to show what earnings would be if the company paid cash instead of stock, but that's a variation, not the base formula.

Can EBITDA be negative?

Yes. If a company has a large net loss and the four add-backs don't overcome it, EBITDA will be negative. This means the business is not generating profit from operations, even before interest and taxes. A negative EBITDA is a warning sign, though it can happen temporarily in a startup or during a restructuring.

Why do lenders and investors care about EBITDA?

Lenders use EBITDA to calculate debt service coverage — whether a company generates enough operating profit to pay interest and principal on loans. Investors use it to compare companies and to value businesses using multiples like "price-to-EBITDA." It removes distortions from capital structure and accounting choices, making comparisons cleaner.