Business Valuation Methods Explained: How to Calculate What Your Business Is Worth

There is no single formula for valuing every business. The main methods are an EBITDA multiple, a revenue multiple, an asset-based valuation and discounted cash flow, with comparable transactions often used to test whether the result is realistic. The best method depends on how the business creates value, so sellers should usually use the most appropriate primary method and cross-check it against other evidence.

There is no single business valuation formula that works for every company when selling a business.

A profitable, established SME may be valued using a multiple of maintainable EBITDA. A subscription business might be assessed partly on recurring revenue. An asset-heavy company may be valued by reference to its property, equipment and other net assets, while a business with predictable future cash flows may suit a discounted cash-flow calculation.

For owners preparing to sell, the most useful approach is usually to apply the valuation method that best reflects how the business creates value, then test the result using one or more alternative methods.

This guide explains the main business valuation methods used in the UK and provides a worked example for each one.

How do you calculate the value of a business?

The four main ways to calculate a business valuation are:

1. EBITDA multiple: Multiply maintainable EBITDA by an appropriate market multiple.
2. Revenue multiple: Multiply maintainable annual revenue by a suitable revenue multiple.
3. Asset-based valuation: Add the market value of the company’s assets and deduct its liabilities.
4. Discounted cash flow: Forecast future cash flows and discount them to their present value.

The result may represent either the value of the trading operations, known as enterprise value, or the value attributable to shareholders, known as equity value.

Professional valuation standards commonly group techniques under three broad approaches: market, income and cost. The individual method selected should reflect the asset or business being valued, the available evidence and the purpose of the valuation.

Business valuation calculator: what information do you need?

Before using any business valuation calculator, gather reliable financial and commercial information.

At a minimum, you are likely to need:

• Three to five years of statutory accounts
• Current management accounts
• Monthly revenue and profit figures
• EBITDA calculations
• Details of exceptional or non-recurring costs
• Owner remuneration and benefits
• Cash and debt balances
• Working-capital information
• Asset schedules
• Customer-level revenue
• Recurring-revenue data
• Budgets and forecasts
• Capital-expenditure requirements
• Information about major commercial risks

UK limited companies must keep financial and accounting records sufficient to show their financial position and support their annual accounts and Company Tax Return. A sale valuation will normally require more detailed management information than statutory compliance alone.

A calculator is only as reliable as the figures entered into it. Using an unadjusted profit number, unrealistic forecast or arbitrary market multiple can produce an apparently precise but commercially weak result.

Business valuation methods at a glance

Method 1: EBITDA multiple valuation

An EBITDA multiple is one of the most commonly used business valuation methods for established, profitable SMEs.

EBITDA means earnings before interest, tax, depreciation and amortisation. It provides a measure of operating performance before financing costs, taxation and certain non-cash accounting charges.

The simplified business valuation formula is:

Maintainable EBITDA × valuation multiple = enterprise value

EBITDA valuation worked example

Assume a company has reported EBITDA of £500,000.

After reviewing its accounts, the seller and adviser identify:

• £30,000 of genuinely non-recurring legal expenditure
• £20,000 of personal costs paid through the company
• A £70,000 additional annual cost to replace work currently performed by the owner

The maintainable EBITDA calculation would be:

If an appropriate multiple is 4.5:

£480,000 × 4.5 = £2,160,000 enterprise value

The £2.16 million figure represents the indicative value of the trading operations before agreed adjustments for cash, debt and working capital.

Read our blog on EBITDA add backs here.

What is maintainable EBITDA?

Maintainable EBITDA is an estimate of the recurring operating earnings that could reasonably continue under new ownership.

It may differ from the EBITDA shown in the latest accounts because a buyer will consider whether particular income and expenses are:

• Recurring
• Commercially necessary
• At market rates
• Likely to continue after completion
• Related to the current owner personally
• Representative of normal trading

Possible adjustments include:

• One-off professional fees
• Exceptional repairs
• Personal expenses
• Non-commercial family salaries
• Owner remuneration below or above market rate
• Redundant property costs
• Temporary grant income
• Unusually large one-off contracts
• Costs postponed shortly before the sale

A cost should not be added back simply because the seller describes it as exceptional. Buyers will usually require evidence that it will not recur or be replaced by another necessary expense.

How do you choose an EBITDA multiple?

The multiple reflects the perceived quality, growth and risk of the company.

Factors that may support a higher multiple include:

• Recurring or contracted revenue
• Consistent growth
• Strong cash conversion
• High customer retention
• Low customer concentration
• A capable management team
• Limited dependence on the owner
• Protected intellectual property
• Strong market positioning
• Clear opportunities for growth

Factors that may reduce the multiple include:

• Declining or volatile earnings
• Reliance on one customer
• Heavy owner dependency
• Weak management reporting
• Limited contractual revenue
• High capital-expenditure requirements
• Legal or regulatory risks
• Poor employee retention
• Underinvestment
• Uncertain forecasts

Private-company transaction multiples can provide useful evidence, but they need to be applied consistently and adjusted for differences between the comparable company and the business being valued. ICAEW maintains resources covering UK private-company multiples and sources of EBITDA and price-multiple data.

What our experts say:

Do not start with the multiple

Owners often begin by asking, “What multiple does my industry achieve?”

A more useful first question is:

What level of earnings can a buyer confidently expect to continue after I leave?

An ambitious multiple applied to overstated EBITDA will not create a credible valuation. Establish maintainable earnings first, then assess the multiple in light of the company’s risks, strengths and market evidence.

Method 2: Revenue multiple valuation

A revenue multiple values a business by applying a market multiple to its maintainable annual revenue.

The formula is:

Maintainable annual revenue × revenue multiple = enterprise value

This method may be considered for businesses where revenue growth, recurring income or market share is more informative than current profit.

Examples can include:

• Software-as-a-service companies
• Subscription businesses
• Rapidly growing technology companies
• Digital platforms
• Businesses investing heavily ahead of growth
• Companies whose current earnings are temporarily suppressed
  
  

Revenue multiple worked example

Assume a subscription business generates:

• £2.5 million annual revenue
• £2 million recurring revenue
• 20% annual growth
• Strong gross margins
• Low customer churn

If relevant market evidence supports a revenue multiple of 1.8:

£2,500,000 × 1.8 = £4,500,000 enterprise value

However, a buyer may decide that only the recurring portion deserves the higher multiple.

For example:

This illustrates why a single headline revenue number may not provide enough information.

What affects a revenue multiple?

Buyers may assess:

• Recurring revenue percentage
• Revenue growth
• Customer churn
• Contract length
• Gross margin
• Customer acquisition cost
• Customer lifetime value
• Customer concentration
• Route to profitability
• Cash burn
• Future funding requirements
• Scalability
• Intellectual property
• Market size

Two companies with identical revenue can have very different values.

A company with high retention, strong margins and predictable subscription income may attract a higher multiple than a company relying on low-margin, one-off projects.

When should revenue multiples be used cautiously?

Revenue multiples can be misleading where:

• Revenue is growing but losses are increasing
• Gross margins are weak
• Customers leave frequently
• A large share of sales is non-recurring
• Significant investment is required to deliver growth
• Revenue is concentrated among a few customers
• The business has limited control over pricing
• Cash generation is poor

Revenue is not the same as value. The buyer ultimately needs to understand how revenue can translate into sustainable future cash flow.

Data insight:

Comparable deal evidence can change over time

ICAEW’s private-company multiples resources are updated using transaction information from completed UK private-company deals. This matters because valuation multiples are not fixed: they can change with buyer demand, financing conditions, sector confidence and the quality of businesses coming to market.

A multiple sourced several years ago may therefore be less relevant than recent comparable evidence. Sellers should also check whether the published transactions are genuinely comparable in size, profitability and business model.

Method 3: Asset-based valuation

An asset-based valuation calculates the value of a business by assessing what it owns and deducting what it owes.

The simplified formula is:

Market value of assets − liabilities = net asset value

This method may be particularly relevant for:

• Property companies
• Manufacturers
• Engineering businesses
• Asset-holding companies
• Investment businesses
• Companies with significant stock or equipment
• Businesses with weak earnings but valuable assets
  
  

Asset-based valuation worked example

Assume a company has the following assets:

Its liabilities are:

The indicative net asset value is:

£2,070,000 − £870,000 = £1,200,000

Why market value differs from book value

Book values are accounting figures. They do not necessarily represent what an asset could be sold for.

For example:

• Property may have increased in value
• Machinery may be worth less than its depreciated book value
• Stock may be obsolete or slow-moving
• Trade debtors may not be fully recoverable
• Internally created intellectual property may not appear fully on the balance sheet
• Specialist equipment may have limited resale demand

Government tax guidance similarly distinguishes the amount recorded or received from an asset’s market value in situations where market value rules apply.

Does asset value include goodwill?

A basic net asset valuation may not fully capture goodwill.

Goodwill can arise from:

• Customer relationships
• Brand reputation
• A trained workforce
• Systems and processes
• Intellectual property
• Supplier relationships
• Market position
• The ability to generate profits above the return expected from the underlying assets

For a profitable trading business, an asset-based figure may act as a floor or cross-check rather than the main valuation.

Avoid double counting assets

An important business valuation principle is to avoid counting the same value twice.

Suppose a manufacturer is valued using an EBITDA multiple. Its normal machinery is required to produce the earnings used in that calculation.

Adding the full machinery value to the earnings-based valuation could double count the assets already supporting those profits.

However, genuinely surplus assets may be treated separately. Examples could include:

• Unused property
• Excess cash
• Investments unrelated to trading
• Redundant equipment
• Assets intended to be excluded from the sale

The exact treatment should be clear in the valuation and transaction terms.

Method 4: Discounted cash-flow valuation

Discounted cash flow, usually shortened to DCF, values a business using the present value of the cash it is expected to generate in future.

It is based on the principle that money expected in the future is worth less than money available today because of time and risk.

The DCF process generally involves:

1. Forecasting future free cash flows
2. Estimating a terminal value
3. Choosing an appropriate discount rate
4. Discounting each future amount to present value
5. Adding the discounted values together

RICS describes DCF as a recognised valuation model whose suitability depends on professional judgement and the circumstances of the valuation. It is not mandatory for every valuation.

Simplified DCF formula

The present value of a future cash flow can be expressed as:

Present value = future cash flow ÷ (1 + discount rate)ⁿ

Where:

• The discount rate reflects risk and the required return
• “n” is the number of years until the cash flow is received
  
  

Discounted cash-flow worked example

Assume a company is forecast to generate the following free cash flows:

Assume a discount rate of 15%.

The simplified present values are:

A complete DCF normally also includes a terminal value representing cash flows beyond the explicit forecast period.

Assume a terminal value of £1.8 million at the end of year five:

£1,800,000 × 0.497 = £894,600 present value

The indicative enterprise value would therefore be:

£1,028,800 + £894,600 = £1,923,400

This is an illustrative calculation, not a recommendation of a suitable discount rate or terminal-value methodology.

What affects a DCF valuation?

The result is sensitive to:

• Revenue forecasts
• Profit margins
• Tax assumptions
• Working-capital requirements
• Capital expenditure
• Growth rates
• Terminal value
• Discount rate
• Timing of cash flows
• Probability of achieving the plan

A small change in one assumption can materially alter the outcome.

When is DCF most useful?

DCF may be useful where:

• Future cash flows can be forecast with reasonable confidence
• The business has a detailed and credible financial model
• Earnings are expected to change substantially
• Current profit does not represent long-term potential
• Long-term contracts support future income
• The company has clear capital-investment requirements

It may be less reliable where the business has:

• Volatile earnings
• Limited financial history
• Highly uncertain demand
• Weak forecasting
• Significant customer concentration
• Unproven growth assumptions
  
  

What our experts say:

Treat precision with caution

A DCF spreadsheet can produce a valuation to the nearest pound, but that does not make the answer certain.

The model should be tested under several scenarios, such as:

• Lower revenue growth
• Reduced margins
• Higher capital expenditure
• Slower customer acquisition
• A higher discount rate
• A lower terminal-growth assumption

A sensible valuation considers the range of plausible outcomes rather than relying on one optimistic forecast.

Method 5: Comparable transaction analysis

Comparable transaction analysis uses evidence from sales of similar companies.

A valuer may examine:

• Enterprise value-to-EBITDA multiples
• Enterprise value-to-revenue multiples
• Price-to-earnings ratios
• Deal values
• Sector trends
• Strategic premiums

The selected multiple is then applied to the relevant financial metric of the company being valued.

Comparable transaction worked example

Assume recent transactions suggest the following EBITDA multiples:

If the subject business has maintainable EBITDA of £400,000:

£400,000 × 4.6 = £1,840,000 enterprise value

However, the valuer may adjust the multiple if the company is:

• Smaller than the comparables
• More dependent on its owner
• Growing faster
• More profitable
• Less diversified
• Operating in a different region
• More reliant on project revenue
• Better or worse managed
  
  

Why comparable valuations can be difficult

Private-company transaction details are not always fully public.

Even where a sale price is known, the available information may not show:

• The actual maintainable EBITDA
• The level of debt
• Whether property was included
• How much was deferred
• Whether an earnout applied
• The strategic rationale
• The buyer’s synergies
• Exceptional risks identified during due diligence

A reported “five-times EBITDA deal” may therefore not be directly comparable with your company.

Enterprise value versus equity value

A business valuation calculation often produces enterprise value, but the seller ultimately needs to understand equity value.

Enterprise value

Enterprise value represents the value of the company’s trading operations before the agreed treatment of cash and debt.

Equity value

Equity value represents the value attributable to shareholders after relevant adjustments.

A simplified bridge is:

Enterprise value + surplus cash − debt ± working-capital adjustment = equity value

Enterprise-to-equity value worked example

Assume:

• Enterprise value: £2,160,000
• Surplus cash: £200,000
• Debt: £350,000
• Working-capital shortfall: £60,000

The calculation is:

ICAEW guidance on completion mechanisms highlights the importance of understanding the basis of headline enterprise value and the adjustments required to reach the final equity value.

The definitions of cash, debt and normal working capital can be heavily negotiated. They should be considered before Heads of Terms are finalised.

Which valuation method should you use?

The most suitable method depends on the company.

A valuer may use several techniques and reconcile the results.

For example:

• EBITDA method: £2.2 million
• DCF: £2 million
• Comparable transactions: £2.3 million
• Asset value: £1.4 million

Based on this evidence, an adviser might conclude that a defensible enterprise-value range is approximately £2 million to £2.3 million rather than selecting one calculation mechanically.

Data insight:

Market activity affects valuation evidence

The ONS recorded 352 completed domestic and cross-border acquisitions involving UK companies in the first quarter of 2026, compared with 495 in the previous quarter. Its statistics cover transactions involving a change in majority ownership and a value of at least £1 million, so they do not represent every SME business sale.

The figures nevertheless demonstrate that transaction activity can move between periods. The availability and relevance of comparable deal evidence can therefore change as market conditions evolve.

Common business valuation calculator mistakes

Using reported profit without adjustments

Reported EBITDA may include one-off income, personal expenditure or an owner salary that does not reflect the cost of replacement management.

Choosing the multiple first

Selecting a desired valuation and working backwards to the multiple is not a reliable methodology.

Using public-company multiples for a small private business

Listed businesses are often larger, more diversified and easier to buy and sell than owner-managed SMEs.

Ignoring cash, debt and working capital

An enterprise valuation is not necessarily the amount shareholders will receive.

Treating revenue as profit

A high-revenue company can still have poor margins, weak cash generation and significant funding requirements.

Using book values instead of market values

The accounting value of property, machinery or stock may differ significantly from its realisable value.

Adding the same asset twice

Assets required to generate earnings may already be reflected in an earnings-based valuation.

Relying on an optimistic forecast

A valuation should be tested against realistic downside and base-case scenarios.

Ignoring owner dependency

A buyer may reduce the multiple, require a longer handover or make part of the price conditional where the company relies heavily on the seller.

Presenting one figure as guaranteed

A business valuation is normally better expressed as a range supported by clear assumptions.

Can you value a business yourself?

A business owner can produce an indicative estimate using reliable information and one or more of the methods above.

A simple process is:

1. Calculate maintainable EBITDA or revenue.
2. Research relevant market multiples.
3. Estimate asset values and liabilities.
4. Prepare a realistic cash-flow forecast.
5. Calculate a range using several methods.
6. Adjust enterprise value for cash, debt and working capital.
7. Compare the result with recent market evidence.
8. Identify assumptions that a buyer is likely to challenge.

This can be useful for initial planning, but it may not be sufficient where:

• The company has complex assets
• Shareholders disagree
• A tax valuation is required
• An MBO or family transfer is proposed
• The business has several divisions
• Financial performance is volatile
• The seller has received a significant offer
• Formal reporting is required
• Negotiations are likely to be complex

HMRC uses specialist Shares and Assets Valuation processes for unquoted shares in relevant tax contexts and applies statutory market-value principles based on a hypothetical open-market transaction. A commercial sale valuation may have a different purpose, but the guidance illustrates why the valuation date, available information and precise interest being valued matter.

Do online business valuation calculators work?

An online small business valuation calculator can provide an initial estimate, but it should not be treated as a guaranteed sale price.

A calculator may not fully account for:

• Customer concentration
• Contract quality
• Owner dependency
• Management capability
• Intellectual property
• Legal disputes
• Recent trading changes
• Working-capital requirements
• Deferred investment
• Buyer-specific synergies
• Deal structure
• Market appetite

Two businesses with the same turnover and EBITDA can have materially different values because their risk profiles are different.

Use an online calculator as a starting point for questions, not as a substitute for commercial judgement and professional advice.

When should you use a professional business valuation service?

Consider appointing a professional where:

• You are preparing to sell
• You have received an unsolicited offer
• You need an independent opinion
• Several shareholders are involved
• You are planning an MBO
• You are transferring shares to family
• The company has complex assets
• A tax or legal purpose requires a valuation
• You need support defending the valuation during negotiations

Potential providers include:

• Accountants
• Corporate finance advisers
• Specialist business valuers
• Business brokers
• Chartered surveyors for relevant assets

For a seller-focused explanation of the commercial factors buyers assess, see How to Value Your Business Before Selling.

Calculate your value before going to market

A credible valuation gives you a stronger foundation for exit planning, buyer discussions and negotiation.

The most reliable approach is rarely to enter a few figures into a calculator and accept the result. It involves selecting an appropriate methodology, making supportable adjustments and testing the output against the company’s risks and current market evidence.

Before advertising your company, you should understand:

• Which method best reflects how it creates value
• What its maintainable earnings are
• Which assumptions a buyer may challenge
• Whether the result is enterprise or equity value
• How debt, cash and working capital affect proceeds
• What changes could strengthen the valuation before sale

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