What Is Adjusted EBITDA? Formula, Adjustments and Calculation

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Adjusted EBITDA is earnings before interest, taxes, depreciation and amortization, further modified to remove items that management or an analyst considers non-recurring, non-cash, non-operating or otherwise unusual for the business. It is a non-GAAP measure: no accounting standard defines it, so each company or deal team chooses its own adjustments. The goal is a “normalized” earnings figure that reflects what the business would earn in a typical year, with expenses similar to those a comparable company in the same industry would carry.

The Adjusted EBITDA Formula

The calculation runs in two stages:

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

Adjusted EBITDA = EBITDA ± Adjustments

The first stage is mechanical and uses figures from the income statement. The second stage is judgment. Most adjustments are add-backs, expenses removed as one-time or unrepresentative, which push the figure up. Some are deductions, which push it down, for example removing a one-time gain or charging a market-rate cost the company does not currently pay.

How to Calculate Adjusted EBITDA

1. Calculate EBITDA: start with net income and add back interest, taxes, depreciation and amortization, which reflect financing, tax position and non-cash asset charges rather than operations.
2. Add back non-recurring or non-operating expenses, such as a one-off legal settlement or restructuring cost.
3. Normalize owner-related items in private firms, such as compensation above market rates or personal expenses run through the business.
4. Deduct items that inflate earnings, such as one-time gains, or expenses a normal competitor would incur that this company lacks. An understaffed company, for instance, may need a deduction for the salaries of the headcount it would realistically have to hire.

Common EBITDA Adjustments

These items appear frequently in adjusted EBITDA reconciliations:

• Unrealized gains or losses on investments or derivatives
• Foreign exchange gains or losses
• Goodwill and other asset impairments
• Litigation expenses and settlements
• Restructuring, severance and one-time startup costs
• Share-based compensation
• Non-operating income, such as income from redundant assets
• Owner compensation above market levels (private firms)
• Owner personal expenses paid by the company
• Rent paid above or below fair market value, often in property leased from the owner
• One-time repairs, maintenance or insurance-related items

For owner pay, U.S. tax rules supply a useful benchmark. Treasury Regulation §1.162-7(b)(3) describes reasonable compensation as the amount that would ordinarily be paid for like services by like organizations in like circumstances. An analyst replaces the actual owner salary with that market figure, and the difference becomes the adjustment in either direction.

Share-based compensation is one of the most debated add-backs. It does not use cash in the period, but it is a real cost to shareholders through dilution, and many analysts decline to add it back.

Example of Adjusted EBITDA

The following is a hypothetical private company being valued for sale. Figures are in millions.

At a hypothetical 6x multiple, standard EBITDA implies an enterprise value of $24.0 million and adjusted EBITDA implies $28.2 million. Each $1 million of accepted add-backs adds $6 million to the price, which is why buyers, investment bankers and equity analysts challenge every adjustment during due diligence. If the buyer rejects the share-based compensation add-back, adjusted EBITDA falls to $4.50 million and the implied value to $27.0 million.

How Adjusted EBITDA Is Used

Valuation multiples. Adjusted EBITDA is used heavily in mergers, acquisitions, private equity deals and capital raising, often as the base for a multiple such as EV/adjusted EBITDA, which lets buyers compare companies of different sizes and capital structures. Earnings definitions need to match: an EV/EBITDA multiple from one deal should not be applied to adjusted EBITDA from another without checking what was added back.

Comparability. Removing idiosyncratic items makes it easier to compare business units or competitors in the same industry.

Smoothing over time. Valuations usually work from annual figures, and analysts often average adjusted EBITDA over three to five years to dampen one unusual year. Companies may also track it quarterly or monthly for internal purposes.

Margins. Adjusted EBITDA divided by revenue gives the adjusted EBITDA margin. A higher margin indicates more operating earnings per dollar of sales, though it is only as reliable as the adjustments behind it.

Lending. Credit agreements frequently define a version of adjusted EBITDA for leverage covenants, and the contract wording, not a general definition, governs that calculation.

Adjusted EBITDA vs. Related Measures

Adjusted EBITDA vs. EBITDA. EBITDA follows a standard formula and can usually be reproduced from published financial statements. Adjusted EBITDA layers discretionary changes on top, so two analysts can reach different results for the same company.

Normalized EBITDA. Largely interchangeable with adjusted EBITDA, especially in private company valuation. “Normalized” emphasizes restating earnings to a typical, market-rate level; “adjusted” is the broader label for any changes management makes.

Pro forma adjusted EBITDA. This goes a step further, presenting earnings as if an event had already happened, such as including a full year of an acquired business or expected cost savings. Projected synergies are not historical results and deserve the most skepticism.

Adjusted EBITA. This variant adds back amortization but not depreciation, treating depreciation as a genuine cost of maintaining assets.

GAAP and IFRS Status

Adjusted EBITDA is not a U.S. GAAP line item. When U.S. public companies disclose it, SEC rules on non-GAAP financial measures (Regulation G and Item 10(e) of Regulation S-K) require a reconciliation to the most directly comparable GAAP measure, usually net income, and GAAP figures must be presented with equal or greater prominence. IFRS does not define it either. IFRS 18, effective for annual periods beginning on or after January 1, 2027, requires disclosures and a reconciliation for management-defined performance measures presented in the notes, but it does not standardize the metric itself.

Limitations of Adjusted EBITDA

• Discretion. Labeling a recurring cost “one-time” year after year inflates the figure.
• Ignored real costs. Interest, taxes and capital spending all consume cash. A business with heavy reinvestment needs can show strong adjusted EBITDA and weak free cash flow.
• Limited availability. Private company normalizations are often prepared for a deal and not published.
• Weak comparability. Different definitions undermine the comparison the metric is meant to support, so the reconciliation matters more than the headline number.

Used alongside net income, cash flow and balance sheet analysis, adjusted EBITDA helps show the earnings a business can sustain. Used alone, it shows the earnings its preparer chose to count.

The Bottom Line

Adjusted EBITDA matters most to buyers, sellers, lenders and analysts working on deals, valuations and loan covenants. Because the adjustments rest on judgment, the reconciliation deserves more attention than the headline figure, and every add-back should be tested. Read alongside net income, cash flow and the balance sheet, it helps show what a business can sustainably earn.