EBITDA (Finance & Accounting KPI): Formula and Example

Business context

Why EBITDA matters

Movement in EBITDA should prompt a check of the underlying volume, mix, timing, and data coverage before the team attributes the change to performance.

Business question: How is EBITDA changing, and which operating segments explain that movement?
Teams that use it: Finance, accounting, operations, and leadership teams.
Decisions it supports: Planning, cash management, cost control, financial review, and resource allocation.

Calculation

EBITDA formula

Revenue - Expenses (excluding interest, taxes, depreciation, and amortization)

Formula components

Revenue: The monetary amount assigned to revenue for the same scope and reporting period used by EBITDA.
Expenses Excluding Interest, Taxes, Depreciation, Amortization: The monetary amount assigned to expenses excluding interest, taxes, depreciation, amortization for the same scope and reporting period used by EBITDA.
Reporting period: The consistent day, week, month, quarter, or year covered by every input.

How to calculate EBITDA

Define the business scope, reporting period, and the event or status that qualifies for EBITDA.
Collect each input in the workbook formula from systems that use the same cut-off and unit.
Remove duplicates and exclusions according to the documented rule, while retaining a reconciliation count.
Apply Revenue - Expenses (excluding interest, taxes, depreciation, and amortization) and label the result with its period, unit, and relevant segment.

Worked example

EBITDA example

A fictional organisation compares the two documented inputs used for EBITDA.

Revenue = £142,949.
Expenses Excluding Interest, Taxes, Depreciation, Amortization = £123,000.
EBITDA = £142,949 − £123,000 = £19,949.

EBITDA is £19,949.

The sign and size of the difference should be read against the exact order of the workbook formula and the plan for the period.

How to interpret the result

Compare EBITDA over a consistent cadence and break it down only by segments large enough to support a decision. Review the formula inputs beside the result so teams can distinguish a real operating shift from a denominator or mix effect.

There is no single target that fits every organisation. Interpretation depends on accounting policy, revenue model, company size, capital structure, seasonality, and reporting period. Document the comparison group before labelling a result strong or weak.

Common mistakes and limitations

Inconsistent scope: Changing the included business units, products, channels, or populations makes the trend look different even when underlying performance is unchanged.
Mismatched periods: Formula inputs from different cut-off dates or time windows do not describe one coherent result.
Reading the headline alone: A single value can hide offsetting movement across segments, volumes, or contributing formula components.
Assuming one universal target: A useful comparison depends on accounting policy, revenue model, company size, capital structure, seasonality, and reporting period; use like-for-like internal trends and clearly documented peer groups.