Finance
Simple Business Valuation (Multiples & Single-Stage DCF)
A back-of-envelope way to put a number on a private business using an earnings multiple and a single-stage discounted cash flow, so an owner can open a serious conversation about value with two sanity-checked figures, not a guess.
Also known as Gordon Growth Model, EBITDA multiple valuation, Back-of-envelope valuation, Quick-and-dirty valuation. First set out by Myron J. Gordon and Eli Shapiro (origin of the dividend-discount growth formula this tool borrows for its DCF side); earnings-multiple valuation has no single originator, it is standard market practice built up by generations of dealmakers and advisers. in 1956; the primary source is cited in full below.
Where this is contested
This entry deliberately fuses two traditions of different vintage: Gordon and Shapiro's 1956 dividend-discount growth model, and earnings-multiple valuation, which is standard market practice with no single paper or date behind it. The 1956 date and the named originators anchor the DCF/Gordon Growth side of the tool only, not the multiples side.
- Format
- Scoring model
- Level
- Corporate · Business unit
- Best for
- Evaluate options · Allocate resources
- Decision stage
- Explore options · Decide
- Difficulty
- Advanced
- Time to apply
- Two to four hours for a first-pass figure once you have the accounts to hand; longer if several years need normalising or comparable multiples need chasing down
Plate · The model
The components
Earnings-multiple valuation
Applies a sector-appropriate EV/EBITDA multiple to normalised earnings. Fast and market-grounded, but only as sound as the comparables chosen, and private SME multiples typically sit well below the multiples reported for listed companies in the same sector.
Signals of strength
Recent, sector-relevant private transaction multiples are available, not just listed-company benchmarks · Earnings have been normalised for one-offs and owner's remuneration before the multiple is applied · The comparator businesses are genuinely similar in size, growth, and margin, not just industry code
Single-stage DCF (Gordon Growth)
Discounts one steady-state free cash flow figure at a required return net of an assumed perpetual growth rate. Simple and transparent, but acutely sensitive to small shifts in either the growth rate or the discount rate.
Signals of strength
Cash flows are reasonably stable and a single long-term growth assumption is defensible · The discount rate reflects this specific business's risk, not a generic textbook figure · Growth is set comfortably below the discount rate, and nowhere near it, or the formula breaks down
Sanity-check / triangulation
Compares the multiple-based and DCF-based answers, both net of debt, to see whether two independent routes converge on a believable range rather than trusting either number alone.
Signals of strength
The two methods land within a plausible range of one another, typically inside fifteen to twenty per cent · Net debt or net cash has been applied consistently to both enterprise values · A one-to-two point flex on the discount rate has been tested to see how far the DCF answer moves
When it earns its keep
- You're starting to think seriously about an exit, sale, or bringing in outside investment and need a credible first number before instructing a professional valuer.
- A family business is heading into a succession or buyout conversation and the owner needs a rough, defensible starting point for negotiation with children, siblings, or a management team.
- You want to sanity-check a figure someone else has quoted (an adviser, a prospective buyer, a well-meaning accountant) against two independent methods rather than taking it on trust.
- You're deciding whether a business is worth the management time and capital being poured into it, viewed as a saleable asset rather than just an ongoing trading concern.
And when it doesn't
- For an actual transaction, a tax event (EMI options, gifting shares, probate), a shareholder dispute, or a divorce settlement, this is not a substitute for a professional valuation by a qualified valuer or accountant, who will adjust for facts this tool cannot see and whose figure carries weight this one does not.
- The business has volatile, negative, or pre-revenue earnings, or its value sits mainly in future potential rather than current cash flow. Single-stage DCF assumes a steady, sustainable growth rate and will mislead you badly here.
- You don't have a reliable, normalised set of accounts to start from. Feed it a messy number and you get a confident-looking but meaningless answer out.
- The business's value is dominated by a single asset that doesn't move in line with earnings, a property, a patent, a personal relationship with one key client, where a straight multiple or DCF misses the point entirely.
How to run it
Before starting, gather the inputs the analysis depends on:
- At least two to three years of accounts, normalised for one-off items, related-party transactions, and owner's remuneration
- A comparable sector EBITDA multiple range drawn from recent private transactions of a similar size, not just listed-company averages
- A free cash flow figure, plus a defensible long-term growth rate and discount rate assumption
- The business's net debt or net cash position, to move from enterprise value to what the equity is actually worth
- 1
Normalise the earnings first
Adjust reported EBITDA and free cash flow for owner's pay above or below a market salary, one-off gains or costs, and related-party arrangements like below-market rent. You are trying to value the business a buyer would actually inherit, not the one that happens to sit in this year's accounts.
- 2
Apply a comparable EV/EBITDA multiple
Find recent private transaction multiples for businesses of similar size and sector, not headline multiples from listed giants, which typically run well above what a private SME will fetch. Apply the multiple to normalised EBITDA to get an enterprise value.
- 3
Build a single-stage DCF using Gordon Growth
Take normalised free cash flow, assume one sustainable long-term growth rate, and discount at a rate reflecting the business's specific risk, usually well above a listed company's cost of capital once you have priced in key-person dependency, customer concentration, and illiquidity. Value = FCF x (1+g) / (r-g).
- 4
Move from enterprise value to equity value
Subtract net debt (or add net cash) from both the multiple-based and DCF-based enterprise values. This step gets skipped more often than it should, and skipping it overstates what the owner actually walks away with.
- 5
Triangulate the two answers
Compare the multiple-based and DCF-based figures. If they land within a plausible range of each other, that convergence is doing real work for your confidence. If they are miles apart, question your multiple or your growth and discount assumptions before you trust either number.
- 6
Pressure-test and present as a range, not a figure
Flex the discount rate up and down by a couple of points and watch how much the DCF answer moves. Present the output as an opening range for a conversation, family, buyer, or investor, and bring in a qualified valuer once real money or lawyers enter the room.
Reading the result
Two independent, back-of-envelope equity value estimates, one multiple-based and one DCF-based, plus the gap between them, giving an owner a credible range to open a conversation about value rather than a single spurious figure.
- If the two methods converge within roughly fifteen to twenty per cent of each other, treat the midpoint as a workable opening range for negotiation.
- If they diverge sharply, the chosen multiple or the growth and discount assumptions are doing too much work, revisit them before quoting a number to anyone.
- Always state the range alongside its assumptions (multiple used, growth and discount rate assumed) so whoever reads it can challenge the reasoning, not just the conclusion.
A worked example
Fenwick Fabrication Ltd, a family-owned engineering business facing succession
Fenwick Fabrication Ltd is a steel and precision sheet-metal fabricator near Redditch in the West Midlands, supplying automotive and rail component makers. Founder Roy Fenwick, 62, wants to retire within eighteen months. His two adult children have no interest in running it, but his long-serving operations director has expressed interest in a management buyout, and Roy also wants to know what a minority family shareholding might be worth if he retains it. Before instructing a corporate finance adviser, he wants a credible first number to anchor the conversation.
- Normalising earnings
- Reported EBITDA is £460,000. Adding back £55,000 for Roy's above-market salary (he'll be replaced by a managing director on less) and deducting a one-off £25,000 insurance settlement gain gives normalised EBITDA of £490,000.
- Earnings-multiple valuation
- Recent private transactions in regional sheet-metal and precision engineering for businesses this size have run at roughly 3.5x to 4.5x EBITDA, well below the multiples quoted for large listed engineering groups. Applying a midpoint of 4x to £490,000 gives an enterprise value of £1,960,000.
- Free cash flow and assumptions
- Normalised EBITDA less maintenance capex on the CNC and laser-cutting equipment (£70,000), corporation tax (£90,000), and a modest working capital movement (£20,000) gives free cash flow of roughly £310,000. Roy's adviser suggests a 2% long-term growth rate (a mature regional business with no major expansion planned) and a 17% discount rate, reflecting key-person dependency on Roy and a top customer worth over 30% of revenue.
- Single-stage DCF (Gordon Growth)
- £310,000 x 1.02 / (0.17 - 0.02) = £2,108,000 enterprise value.
- Net debt adjustment
- Net debt of £310,000 (asset finance on the CNC and laser equipment, plus a small bank loan) is deducted from both figures. Equity value: £1,650,000 on the multiple basis, £1,798,000 on the DCF basis.
- Sensitivity check
- Nudging the discount rate to 19%, arguably more realistic given the customer concentration, drops the DCF enterprise value to £1,860,000 and equity value to £1,550,000. A two-point shift in a single assumption moved the answer by around £250,000, roughly 14% of the figure.
The read. The two methods converge in a £1.65 million to £1.8 million range for 100% of the equity, which gives Roy a credible envelope to open both the MBO conversation with his operations director and the succession conversation with his family. But the sensitivity check makes the point sharply: a two-point wobble in the discount rate assumption is worth a quarter of a million pounds, so this figure is a sound opening position, not a number to put in a shareholders' agreement. Once heads of terms are on the table, Roy needs a qualified valuer to do the proper work, including a fuller look at customer concentration risk and a formal marketability discount.
Pitfalls
- Treating the discount rate and growth rate as inputs rather than what they really are, judgement calls dressed up as arithmetic. A two-point shift in either can move the DCF answer by fifteen to twenty-five per cent.
- Pulling 'comparable' multiples from press headlines or public deal databases without checking deal size, sector maturity, and whether the reported figure was actually EV/EBITDA rather than something else entirely.
- Applying the multiple to unnormalised earnings, so the answer reflects an owner's personal spending habits rather than what a buyer would actually expect the business to generate.
- Confusing enterprise value with equity value and forgetting to net off debt, which can overstate what an owner actually walks away with by a significant margin.
- Ignoring the illiquidity and marketability discount that private company shares typically warrant against value implied by listed comparables, there is no ready market for them the way there is for a quoted stock.
- Using either method's output as a final negotiating number in a real transaction, rather than as the opening position it actually is.
What the critics say
Valuation is precise arithmetic wrapped around an imprecise guess: small changes to the discount rate or terminal growth assumption swing the DCF answer by tens of per cent, so the method's apparent rigour can flatter the confidence you should place in it.
Aswath Damodaran, NYU Stern, writing extensively on DCF sensitivity and the limits of precision in valuation
Mechanical application of multiples, without adjusting for growth, margin, and risk differences between the subject business and its comparables, is one of the most common and most misleading errors in practical valuation work.
Aswath Damodaran, private company and multiples valuation notes, NYU Stern
Private company shares lack a ready market, so a marketability or illiquidity discount is routinely applied against value derived from listed-company comparables, and the appropriate size of that discount remains genuinely contested among valuers.
Damodaran, 'The Cost of Illiquidity'; ICAEW private company valuation guidance
Work it through
Enter last full year EBITDA and free cash flow, a comparable sector multiple, and your growth and discount rate assumptions to see the multiple-based and DCF-based enterprise values side by side. Your entries persist for this browser session and can be copied out as Markdown or printed.
Inputs
Result
- Multiple-based valuation
- £1,960,000
- Gordon Growth valuation
- £2,108,000
Sources and further reading
- Gordon, M. J. and Shapiro, E. (1956) 'Capital Equipment Analysis: The Required Rate of Profit', Management Science, 3(1), pp. 102-110. ↗
- Damodaran, A., 'Private Company Valuation', NYU Stern School of Business. ↗
- Brealey, R. A., Myers, S. C. and Allen, F., Principles of Corporate Finance (McGraw-Hill), chapters on valuation using discounted cash flow and the constant-growth dividend model.
- ICAEW, 'Business valuation', Corporate Finance Faculty resources. ↗