Adjusted EBITDA Calculator
Normalized earnings for valuation.
Calculate adjusted EBITDA with add-backs for owner compensation, one-off costs, and non-recurring items — the version a buyer or lender will actually use.
What this tool does
Adjusted EBITDA reconstructs operating profit by adding back standard items a buyer would normalise: owner excess compensation, one-off costs, legal, and acquisition expenses. Given reported EBITDA and each add-back, this calculator returns adjusted EBITDA. The result shows what operating earnings might look like after removing non-recurring or owner-specific charges. One-off costs and acquisition expenses typically drive the largest adjustments. A common scenario involves a business owner evaluating sale price: reported earnings include temporary restructuring costs or owner salary above market rate, which a buyer might not expect to repeat. The calculator also estimates the uplift percentage, showing add-backs as a proportion of reported EBITDA. Note that this tool models normalisation based on entered figures only and does not account for industry-specific adjustments, tax effects, or buyer-specific requirements.
Enter Values
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Formula Used
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Disclaimer
Results are estimates for educational purposes only. They do not constitute financial advice. Consult a qualified professional before making financial decisions.
Adjusted EBITDA adds back non-recurring or owner-specific expenses to reported EBITDA to show the business's 'true' ongoing earning power. Standard add-backs: owner excess compensation, one-off legal costs, acquisition-related costs, stock-based compensation, and exceptional items like lease break fees or restructuring.
Reported EBITDA 2M, plus 300k owner excess (founder taking above-market salary), 100k one-off legal, 50k acquisition costs, 150k SBC = 2.6M adjusted EBITDA. That 30% uplift directly moves valuation: at 8x multiple, the 600k adjustment adds 4.8M to enterprise value.
Buyer pushback on add-backs is normal. Aggressive add-backs (ongoing expenses dressed as one-offs, owner perks that replacement management would also take, questionable 'non-recurring' items) get challenged. Defensible add-backs are ones with clear evidence: excess comp supported by industry benchmarks, legal costs tied to a specific matter now closed, acquisition costs documented with counterparty.
A worked example
Try the defaults: reported ebitda of 2,000,000, one-off costs of 0, owner excess compensation of 300,000, non-recurring legal of 100,000. The tool returns 2,600,000.00. You can adjust any input and the result updates as you type — no submit button, no reload. That's the real power here: seeing how sensitive the output is to one or two assumptions.
What moves the number most
The result responds to Reported EBITDA, One-Off Costs, Owner Excess Compensation, Non-Recurring Legal, and Acquisition Costs. Not every input has equal weight. Adjusting one input at a time toward extreme values shows which ones move the result most.
The formula behind this
Adjusted EBITDA = reported EBITDA + sum of add-backs. Uplift % = add-backs ÷ reported EBITDA × 100. Everything the calculator does is shown in the formula box below, so you can check the math against your own spreadsheet if you want.
What the score tells you
Headline financial numbers — income, savings, debt — each tell part of the story. This calculation stitches several together into a single read you can track over time. The value is in the direction, not the absolute number.
What this doesn't capture
The score is a composite of the inputs you provide. Life context — job security, family obligations, health, housing — doesn't appear in the math but shapes the real picture. Use the number as a prompt, not a verdict.
££2,000,000 reported + ££0 one-off + ££300,000 excess comp + more = 2,600,000.00.
Inputs
This example uses typical values for illustration. Adjust the inputs above to match a specific situation and see how the result changes.
Sources & Methodology
Methodology
The calculator computes adjusted EBITDA by taking the reported EBITDA figure and adding back a series of non-operating or one-time items: one-off costs, owner excess compensation, non-recurring legal expenses, acquisition costs, and stock-based compensation. Each adjustment represents an expense that is treated as outside normal business operations or unlikely to recur. The sum of these add-backs is then added to reported EBITDA to produce the adjusted figure. The calculator also expresses the total add-backs as a percentage of reported EBITDA, showing the magnitude of adjustments relative to the baseline earnings. This approach assumes all add-backs are appropriate and independent, and does not account for tax effects, timing differences, or the probability that adjustments will actually recur.
Frequently Asked Questions
Which add-backs are legitimate?
Which add-backs get rejected?
Does adjusted EBITDA replace reported?
Add-back caps?
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