Enterprise Value and Equity Value

Two different questions

Equity value is what the shareholders own. For a listed company it is simply the share price multiplied by fully diluted shares outstanding, which is why it is often called market capitalisation.

Enterprise value is what the operating business is worth, regardless of how it happens to be financed. Think of it as the price you would have to pay to own the operations free and clear: buy out the shareholders, settle the debt, and keep the cash that comes with the business.

The distinction matters because financing choices move equity value around without changing the underlying business at all. Two identical companies, one funded with debt and one without, have very different equity values and near identical enterprise values. When you compare companies, you almost always want the measure that is not distorted by the capital structure.

One framing is worth carrying through the rest of the module: equity value is observed and enterprise value is constructed. A share price is quoted continuously and requires no judgement from you at all. Enterprise value is assembled out of a balance sheet that is already months old, using estimates for several of its components, and two competent analysts can arrive at different enterprise values for the same company on the same day without either of them being careless. That asymmetry is why the sections that follow spend so long on individual line items. A multiple is only as good as the least defensible item in the bridge underneath it.

The bridge

Going from equity value to enterprise value, you add anything that represents another claim on the business and subtract anything that is not part of operations. Debt is added because a buyer inherits it. Cash is subtracted because a buyer effectively gets it back and can use it to reduce the purchase price.

Non controlling interests are added, because the consolidated financials include 100% of a subsidiary the company does not fully own, so enterprise value has to reflect the whole thing to stay consistent with the metric underneath it. Equity investments in associates are subtracted for the mirror reason: their earnings are not in EBITDA, so their value should not be in enterprise value.

One instrument has no fixed place in that list, and it is worth flagging now rather than later. A convertible bond is debt the holder may hand back in exchange for shares. Out of the money it belongs on the debt side and is added like any other borrowing. In the money it is not really debt at all, so it leaves the bridge entirely and reappears in the share count you divide by at the end. It cannot sit in both places, and which of the two treatments it gets is decided by a test set out later in this module. A mandatory convertible never reaches the debt side at all, because conversion is not the holder's choice, so it belongs in the share count from the day it is issued.

Every adjustment, and the reason behind it

The bridge above is the version that fits on a slide. A real company has a longer list, and the interviewer's follow up is always the same word: why. That is deliberate. Give a reason for each line and you can rebuild the list from scratch for a company you have never seen. Memorise the list and you fail at the first item that is not on it.

There is one question behind every adjustment and it has two halves. Is this a claim on the operating business that a buyer would have to settle or assume? And is its cost already inside the EBITDA you are about to divide by? An item that answers yes to the first and no to the second belongs in the bridge. An item that answers yes to both is being charged for twice.

Net debt is where most people start. It is gross borrowings, including overdrafts and drawn facilities, less cash, and both halves of it carry an assumption. Adding borrowings at the balance sheet figure assumes book value is what it costs to clear them. Subtracting cash assumes every euro of it is available to do so.

On the debt side the assumption is usually harmless. Investment grade borrowings issued recently trade close to par, and the gap between face value and the market value of debt is not worth the argument. It stops being harmless for a company whose bonds trade at sixty cents in the euro, because using face value assumes you would repay in full a claim the market prices at a heavy discount. There is a real counter argument, and a good interviewer will raise it: in a change of control the buyer frequently does have to repay at or above par, since most European high yield documents carry a change of control put at 101, so the discount is not always something the buyer escapes with. State which basis you used and why.

On the cash side the assumption fails more often. Restricted cash is cash the company is not free to spend: a deposit pledged as collateral, money held in escrow against a disputed claim, a regulatory balance a licensed subsidiary is obliged to hold. It cannot repay debt, so netting it against debt claims a repayment capacity that does not exist and overstates the value reaching shareholders. It has a softer cousin. Minimum operating cash is not restricted by anyone, it is the float the business needs to survive its own payment cycle, and here practitioners genuinely disagree. In a comparables table most people net all cash, because consistency across the peer set matters more than precision on any one name. In a transaction the buyer has to fund that float on day one, so it is excluded. Both are defensible. Using one convention for the target and the other for the peers is not.

Lease liabilities are the largest single item most candidates forget. IFRS 16 removed the operating lease category for lessees, so nearly every lease now sits on the balance sheet as a lease liability with a right of use asset opposite it. The liability is added for the ordinary reason: it is a fixed contractual obligation a buyer must keep paying, economically the same as having borrowed to buy the asset. What makes the addition correct rather than merely conventional is what happened to the income statement. The rent has left EBITDA, replaced by depreciation of the right of use asset and interest on the liability, both below the line. The numerator now carries the obligation and the denominator carries none of the cost, which is exactly the treatment a debt financed owned asset already got.

That symmetry breaks against a US comparable. US GAAP kept the dual model, so a lease classified as operating under ASC 842 puts a liability on the balance sheet but leaves a single lease cost inside operating expenses. Its EBITDA is therefore lower by roughly the rent while its balance sheet looks like the IFRS reporter's. Add that liability mechanically and the property has been charged for twice, once in the numerator through the liability and once in the denominator through rent still sitting in costs, and the multiple prints too high. The fix is to put everyone on one basis: either EBITDAR with rent added back for all of them, or EBITDA with lease liabilities excluded for all of them. Mixing the two inside one table is the error.

A pension deficit is the defined benefit obligation less the assets held in the plan. It is added because retirees hold a claim on the company's future cash that ranks ahead of shareholders and is not reflected in EBITDA. Take the logistics group in the walkthrough below: an obligation of 230 against plan assets of 150. The deficit is 80, and 80 is what belongs in the bridge, not the 230, because the plan assets are already earmarked against it. Contributions are normally deductible, so many practitioners add the deficit net of tax, which at a 25% rate makes it 60. Others add it gross, on the grounds that the timing of the tax benefit is uncertain. Both survive scrutiny. Failing to say which you used does not.

Two further things are worth knowing about that number. It is a snapshot at a reporting date and it is acutely sensitive to the discount rate, because the obligation is long dated. A scheme with a duration of roughly seventeen years sees its obligation move about eight and a half percent for a fifty basis point change in the rate used to discount it. On an obligation of 230 that is close to 20, so a fall of half a percentage point takes the deficit from 80 to about 100, a quarter larger, with nothing whatever happening to the business. And the deficit says nothing about the funding schedule, which is what consumes cash. A large deficit payable over fifteen years under an agreed recovery plan is a different problem from a smaller one falling due next year.

Non controlling interests were introduced in the previous section, and the addition itself is not the hard part. The basis is. The balance sheet figure is an accounting number, and under IFRS 3 the acquirer chose at the acquisition date between measuring it at fair value, which produces full goodwill, and measuring it at its share of identifiable net assets, which produces partial goodwill. Two groups with identical economics can therefore carry very different figures. If the subsidiary is separately listed, use its market capitalisation multiplied by the minority percentage. If it is not, value it on its own multiple. The carrying value is a starting point, not an answer.

Equity method investments are the mirror image, and getting the direction right is a reliable marker of whether someone understands the bridge or has memorised it. A stake of roughly twenty to fifty percent normally brings significant influence without control, so nothing is consolidated. One line, share of profit of associates, appears below operating profit. None of that company's revenue or EBITDA is in the group figures, so none of its value belongs in an enterprise value built to sit above that EBITDA, and it is subtracted. The trap is the basis again: the carrying value is original cost plus the accumulated share of profits less dividends received, a figure that drifts a long way from worth over time.

Finally, the provision balances. This is where the general test earns its keep and the next section is devoted to it, so one line here. Add a provision when the cash it represents is not already inside the EBITDA you are dividing by, which is why an environmental obligation at a site that no longer trades belongs in the bridge and a warranty provision on goods still being sold does not.

Put a company through all of that and the gap against the short form is not a rounding difference. The walkthrough below runs an illustrative European logistics group with lease liabilities, a pension deficit, a consolidated subsidiary it does not fully own, an associate, some restricted cash and one non operating provision. Equity value plus net debt gives 1,450. The full bridge gives 1,820. On 200 of EBITDA that is 7.25 times against 9.10 times, and only the second describes what a buyer would have to fund.

What makes something debt like

The most common way to get a bridge wrong is not to miss an item. It is to include one that does not belong, because a balance sheet is a list of claims and it is tempting to treat every claim as debt. Trade payables are a liability. Accrued wages are a liability. Deferred revenue, tax payable and the warranty provision are all liabilities. None of them is debt.

Debt like items are the ones that pass a test rather than the ones on a list, and the test has three parts. Does the item represent a fixed or reasonably estimable claim on future cash that ranks ahead of shareholders? Does it sit outside the ordinary operating cycle, rather than being part of how the business funds itself week to week? And is its cost absent from the EBITDA in the denominator? An item has to clear all three.

Trade payables fail the second and the third. Buying on credit is how the operating cycle works, and the cost of the goods bought is already charged in EBITDA through cost of sales, so adding the payables balance to net debt charges for the same inventory twice. Follow the logic and it produces an absurdity: a company would look steadily more levered purely because it grew and bought more, and a company that paid every supplier on the last day of the year would look better than it is. That second observation is not hypothetical, which is exactly why the working capital position at completion is negotiated separately from the debt position.

Deferred revenue is the interesting one, because it looks the most like debt and is the item candidates are most often asked about. Cash has already been received and a liability recorded, so instinct says the buyer inherits an obligation. The obligation, though, is to deliver a service rather than to pay money, and the cost of delivering it sits in the cost base and therefore in the EBITDA being valued. On the default treatment it is working capital. Practice does vary: where the cost to serve is heavy and the cash is long spent, buyers argue it is debt like, and the honest answer is that it depends entirely on whether the earnings you are capitalising already carry the cost of honouring it. Say which, and a disagreement becomes a discussion rather than a mistake.

One liability hides inside another, and it has caught auditors as well as analysts. Under supply chain finance, sometimes called reverse factoring, a bank pays the company's suppliers early and the company repays the bank later on extended terms. In substance the company has borrowed. In presentation the balance frequently stays inside trade payables, so net debt looks lower and operating cash flow looks stronger than the business is generating. The symptoms are visible if you look for them: payable days rising sharply with no change in supplier terms, and a note describing arrangements with a financing provider. If it behaves like borrowing it belongs in net debt, and the cash flow statement needs the same correction.

Deferred tax liabilities usually stay out. A deferred tax liability is a timing difference, most often between tax depreciation and book depreciation, and in a company that keeps investing it is renewed faster than it unwinds. It carries no interest, has no maturity, and nobody can demand it. Where a specific balance will crystallise on a known event, such as a disposal already agreed, including a discounted amount is reasonable. Including the whole balance because it appears under liabilities is not.

The trap runs in the other direction too, and this is the half candidates miss. An obligation does not have to be recognised on the balance sheet to be a claim on the business. Contingent consideration owed from a past acquisition, a guarantee given to a joint venture partner, a withdrawal liability under a sectoral pension scheme, a legal exposure disclosed in the notes because it is possible rather than probable: none of them necessarily enters the bridge as a number, and all of them are priced by a buyer whether or not the accounts recognise them. The recognised items go into the bridge. The unrecognised ones go into diligence and into the protections in the sale agreement, which the deal design module covers.

What an interviewer is testing here is not vocabulary. It is whether you hold a test you can apply to something you have never seen. Any candidate can recite lease liabilities, pensions and earnouts. The one who can explain why a warranty provision is treated differently from a remediation provision, using the same sentence for both, is the one who will not break when the item on the page turns out to be a decommissioning obligation or a put option written over a minority shareholder's stake.

Which way you are walking the bridge

The bridge is written as an equation, which makes it look reversible. Arithmetically it is. In practice the two directions are not the same exercise at all, because the numbers on each side are observed in completely different ways, and knowing which way you are travelling tells you where the error is likely to be.

Going up, from equity value to enterprise value, you start with the one figure nobody has to estimate. A listed share price is a market clearing number available continuously and the share count is disclosed. Everything you then apply to it is an estimate: a balance sheet dated several months ago, a pension deficit resting on actuarial assumptions, a non controlling interest carried at an accounting number, an associate held at cost plus accumulated profits. You begin with precision and add uncertainty to it. This is the direction used to build a comparables set, and the discipline that goes with it is to use the most recent balance sheet available and to state its date.

Going down, from enterprise value to equity value, everything reverses. The starting point is your own output and carries the full uncertainty of whatever produced it. You then subtract claims you have to value yourself rather than read off a screen, and you finish by dividing by a share count. That last step is where the direction genuinely bites, because the share count is not an input. It is an output.

The treasury stock method is the standard way to count options that are in the money: assume they are exercised, assume the proceeds are used to buy shares back at the prevailing price, and count the difference. The number of shares repurchased depends on the price, so the diluted count depends on the price, and when the price is what you are solving for you cannot borrow the market's. Take a company with 100 million basic shares and 10 million options struck at 20, trading at 25. The 200 million of exercise proceeds buys back 8 million shares, so the reported diluted count is 102 million. Now suppose your analysis produces an equity value of 4,200 million. At 102 million shares that is 41.18 a share. But at 41.18 the same 200 million of proceeds would not have bought back 8 million shares, so 102 million was never the right count to divide by.

Solve it properly and it settles at 40.00. At that price the proceeds buy back 5 million shares, the count is 105 million, and 4,200 divided by 105 is exactly 40.00, which is self consistent. Check it a second way: add the 200 million of proceeds to equity value, giving 4,400, and divide by the full 110 million shares with no repurchase assumed at all. That also gives 40.00, as it must, because the treasury stock method and the gross method are two presentations of the same cash. The market based count of 102 million would have given 41.18, roughly three percent too high, and the error runs the wrong way: it flatters precisely the situations where you have already concluded the shares are cheap.

A convertible instrument behaves the same way and the mistake is more expensive. At the traded price it may be out of the money and sit in the bridge as debt. At your implied price it converts, leaves the debt side and joins the share count. It cannot be in both, and a bridge that subtracts the face value of a convertible while also counting the shares it would become has charged for the same instrument twice.

There is a commercial version of all this that decides real money. A European private sale is almost always priced on a debt free cash free basis: the parties negotiate an enterprise value for the business, and what the seller receives is the equity value that falls out of the bridge at completion, adjusted for working capital against an agreed normal level. Every line in this module is therefore a negotiation rather than an arithmetic exercise. Whether the operating cash floor is excluded, whether deferred revenue is debt like, whether a provision counts, whether a supply chain finance facility is borrowing: each is worth real money to one side, and the buyer's diligence spends serious time building the case. How the price is then fixed, through completion accounts or a locked box, is covered in the deal design module.

Two practical habits follow. When asked to walk the bridge with no further context, go up from equity value, because that is the direction you can anchor to something observable. When handed an enterprise value and asked for a share price, say the order of operations out loud before you calculate: settle the claims that rank ahead, add back what is not operating, then divide by a diluted count computed at the value you have just derived. Candidates who state the order rarely get it wrong. Candidates who start dividing usually do.

One number will fix that convertible warning in place, because the error is larger than it sounds. Illustrative figures again: your analysis gives an enterprise value of 1,520, other net debt is 80, and the company has a convertible with a face of 120 that would become 12 million shares on top of the 100 million already outstanding. Treat it as equity and the answer is 1,440 over 112 million, or 12.86 a share. Treat it as debt and the answer is 1,320 over 100 million, or 13.20. Do both at once, subtracting the face and counting the shares, and you get 1,320 over 112 million, or 11.79. The double count costs exactly the face value spread over the diluted count, 120 over 112, which is 1.07 a share here, a twelfth of the answer. Which of the first two is correct is settled by a test that is not the one most candidates reach for, and the next section is about it.

Convertibles, and the test that decides whether you count them

Options have been dealt with. The other half of a fully diluted share count is the instruments that turn into shares without anybody paying for them, and they need a different method for a reason worth stating before the mechanics arrive. An option holder hands over cash at the strike price to exercise, which is exactly why the treasury stock method gets to assume that cash buys shares back and then count only the difference. A convertible holder hands over a bond. There are no proceeds, nothing is repurchased, and every share issued on conversion is a genuinely new share. That is the whole asymmetry, and it has a consequence: for the same face amount a convertible is more dilutive than an option pool, and running the treasury stock method over it would understate the count badly.

The if converted method is the convention that handles it. Assume the instrument converted at the start of the period, or at the date of issue if that came later. Add the full as converted share count to the denominator. Then, because you have assumed a world in which the instrument was equity all along, put back into the numerator the payments it would never have made: for convertible debt the interest, net of the tax relief the company actually received on it, and for convertible preference shares the preference dividend, with no tax adjustment, because a preference dividend is an appropriation of profit rather than a deductible expense. Both sides of earnings per share move, and they move together. That is the defining feature of the method and the step people skip.

Work it, because the size of the error is the argument. Take Corvina Industries, an illustrative European group reporting under IFRS: net income of 40, 100 million shares, so basic earnings per share of 0.40, a tax rate of 25%, and a convertible with a face of 120 at a 3% coupon converting into 12 million shares. The coupon costs 3.6 of interest, which after tax relief is 2.7. Done properly, diluted earnings per share is 42.7 over 112 million, or 0.3813. Forget the addback and you divide 40 by 112 million and print 0.3571, understating diluted earnings per share by about six percent and overstating the dilution the instrument actually causes. Add the interest back gross instead, at 3.6, and you print 0.3893, overstating it by the tax relief spread over the diluted count, 0.9 over 112 million. The two errors run in opposite directions, which is why saying that you add back interest is not on its own enough to show that you know what you are doing.

Now the part that decides everything: when the method should be applied at all. For reported diluted earnings per share the answer is not where the share price sits. IAS 33 includes potential ordinary shares only when they are dilutive, and dilutive has an arithmetic definition. Compute the incremental figure, which is the after tax interest saved divided by the number of shares conversion would issue, then compare it with basic earnings per share. Below basic, conversion pulls the average down, the instrument is dilutive and it goes in. Above basic, conversion pushes the average up, the instrument is anti dilutive, and it is excluded. Corvina's notes at a 3% coupon give 2.7 over 12 million, or 0.225, against basic earnings per share of 0.40. Comfortably dilutive, so they go in. Where a company has several such instruments they are ranked from most dilutive to least and brought in one at a time, since an instrument that is dilutive on its own can turn anti dilutive once a more dilutive one has already pulled the running figure down.

Change one thing and the answer reverses. Leave everything else alone and put the coupon at 7% instead of 3%. Interest is 8.4, after tax 6.3, and the incremental figure is 6.3 over 12 million, or 0.525, which is above basic earnings per share of 0.40. Include the notes and diluted earnings per share comes out at 46.3 over 112 million, or 0.41, higher than the 0.40 you started from. That is the definition of anti dilutive, so the notes are excluded and reported diluted earnings per share is 0.40, the same as basic. Meanwhile the shares are at 12.00 against a conversion price of 10.00, so the notes are comfortably in the money throughout. Moneyness did not decide this. The coupon did. To keep the two columns comparable I have held reported net income at 40 in both, and carrying the higher interest charge through would only reinforce the result: net income would be 36.4, basic earnings per share 0.364, and the notes more clearly anti dilutive than before.

Now the divergence that catches candidates who have read both an accounting text and a valuation text, because the two genuinely say different things about the same instrument. Reported diluted earnings per share answers a historical question about a period that has closed, and the anti dilution rule exists to stop a company flattering the figure by pretending to convert. Your equity value bridge answers a forward question: what does one share get if the operating business is worth what your analysis says it is worth. There the decision belongs to the holder, so the test is whether the instrument is in the money at your implied price, exactly as the treasury stock method has to be run at your implied price rather than the traded one. The same convertible on the same day can therefore sit outside reported diluted earnings per share and inside your own diluted count, and neither number is wrong. Being able to say which question you are answering is what separates a candidate who has understood this from one who has memorised a rule and will be caught out by the other.

One last thing about the valuation side, because the intuition points the wrong way. Conversion removes debt, removing debt sounds good for shareholders, and so candidates reach for the higher of the two answers. It is the lower one. Return to the figures from the previous section: an enterprise value of 1,520, other net debt of 80, and a convertible with a face of 120 that becomes 12 million shares on top of the 100 million outstanding. Treating the notes as equity gives 1,440 over 112 million, or 12.86 a share. Treating them as debt gives 1,320 over 100 million, or 13.20. Because 12.86 sits above the conversion price of 10.00 the holder converts, and 12.86 is the answer. The holder owns an option and will exercise it when it is worth more to them, which is precisely when it is worth less to you. That relationship is general rather than a feature of these numbers: conversion beats repayment for the holder exactly when the converted value per share exceeds the conversion price, and that is exactly the case in which the converted value per share is the lower of the two. So whichever way a given instrument falls, the correct treatment is the one that produces the lower value per share. The caveat is worth stating: this compares intrinsic values only, and a convertible with time left to run is worth more than either figure to its holder, which is why in practice a holder may neither convert nor accept repayment until something forces the choice.

What the terms decide, and what a merger changes

Everything so far assumed the holder can convert whenever it suits them. Plenty of convertibles do not work that way, and in the situation where the question matters most, a takeover, the answer is set by the terms rather than by the price.

A contingent conversion feature makes the right to convert conditional. The conditions are standard enough to be worth knowing by name. A price condition requires the shares to close above a set percentage of the conversion price, commonly around 130%, for a stated number of trading days in a quarter. A bond price condition opens conversion when the notes themselves trade below a stated fraction of their conversion value. There is usually a window near maturity in which the condition falls away, and there is a list of specified corporate events, of which a change of control is the one that matters here. Until a condition is met the holder can be sitting on a bond that is well in the money on price and have no right to convert at all.

That changes the diluted earnings per share answer, and it changes it differently depending on whose rules you are under. IAS 33 treats the shares as contingently issuable and tests the condition at the reporting date, as though the reporting date were the end of the contingency period. Met at that date, the shares enter the diluted calculation. Not met, they stay out, even where the instrument is deeply in the money. US GAAP takes the stricter line and includes the shares under a convertible whose trigger is a market price condition regardless of whether that trigger has been reached. So an IFRS filer and a US filer holding the same instrument can report different diluted share counts, and any comparison across the two has to be built from the footnote rather than the headline.

Now the takeover. Almost every convertible indenture defines a fundamental change, covering a change of control and normally also a delisting or a restructuring that leaves holders with something other than freely traded shares, and it typically does two things at once. It gives the holder a put, the right to require repurchase at par plus accrued interest, which is a cash claim on the buyer. And it opens a conversion window in which the conversion rate is temporarily increased on a grid printed in the indenture, indexed to the effective date of the transaction and to the price per share being paid. The increase is compensation rather than a windfall: a holder converting because of a takeover surrenders the remaining time value of an option they paid for through a below market coupon, and the grid is how the document pays for it.

For a buyer this is a purchase price question, not a footnote. Take Corvina as a target at an offer worth 15.00 a share, on the same illustrative figures. The base conversion terms turn the 120 of face into 12 million shares, worth 180 at the offer price, against a put that would return 120 in cash. The holders convert, because 180 beats 120. Apply an illustrative uplift of ten percent to the conversion rate from the grid and the notes deliver 13.2 million shares worth 198. A line the balance sheet carries at 120 has cost 198 of consideration. Nothing about that figure is readable off the balance sheet: it comes off a grid, it depends on the offer price and the effective date, and the real uplift is deal specific, so the number has to be built from the document. Miss it and you understate total consideration or overstate what reaches ordinary shareholders. Where the offer sits below the conversion price the arithmetic runs the other way and the holders put the notes back, which makes them a cash use at closing rather than shares, and the two outcomes cost very different amounts. This is what diligence on a convertible heavy target, common in technology and biotechnology, spends real time on.

That leads to the last question, and the reason you cannot run the acquirer's standalone treasury stock method and if converted method unchanged when building pro forma earnings. Start with whether the target's instruments survive at all. Options are frequently cancelled at closing for a cash payment equal to the spread between the offer price and the strike, in which case they are a use of funds in the funding table and never enter a forward share count. Convertibles are often put back or converted at closing for the reasons just set out. But many indentures let the notes remain outstanding and become convertible into the merger consideration instead, and where that happens the pro forma model has to carry them, and it has to retest them.

Two inputs move, and they move for different reasons. The first is the price the moneyness test runs against. Target options that roll into acquirer options are adjusted in the standard way: the number of shares is multiplied by the exchange ratio and the strike is divided by it, which preserves the aggregate intrinsic value at the exchange ratio and then leaves the test to be run against the acquirer's price instead. Because the exchange ratio embeds a premium over the target's undisturbed price, an option that added nothing standalone can add shares pro forma. Corvina's shares are at 12.00 and its options are struck at 12.00, so under the treasury stock method the exercise proceeds repurchase exactly the shares issued and the net addition is zero. At an exchange ratio of 0.3 against an acquirer trading at 50.00, the offer is worth 15.00 a Corvina share, the rolled options are over 0.3 acquirer shares at a strike of 40.00, and 50.00 against 40.00 is 10.00 in the money, or 3.00 for each original Corvina share, which is 15.00 less 12.00 exactly as it should be. Five million Corvina options become 1.5 million acquirer options, proceeds of 60 repurchase 1.2 million shares at 50.00, and the net addition is 300,000 acquirer shares where standalone it was nothing.

The second input is the earnings the dilution test is run against, and this is where the answer can flip outright. Suppose the acquirer earns 120 on 300 million shares, so basic earnings per share of 0.40, and Corvina's 3% notes survive the deal. Combined, and setting aside financing and synergies to isolate the point, earnings are 160 and basic shares are 330 million, giving combined basic earnings per share of 0.48. The after tax interest saved has not moved: it is still 2.7. What has moved is the number of shares it is spread over, because 12 million Corvina shares become 3.6 million acquirer shares at the exchange ratio. The incremental figure is 2.7 over 3.6 million, or 0.75, against combined basic of 0.48. Standalone the notes were comfortably dilutive at 0.225 against 0.40. Combined they are anti dilutive and they come out. The instrument did not change. The shares it becomes changed, and the earnings it is tested against changed.

So the shortcut fails in a specific way. Running each company's treasury stock method and if converted method on its own financials and adding the two diluted counts together produces an answer that is quietly wrong whenever the target's instruments are economically significant, and wrong in whichever direction the two shifts happen to push. The correct approach is one integrated calculation on pro forma inputs throughout. There is a circularity inside it as well, since the combined earnings per share you test against depends on the share count that the test determines, so this takes an iteration or a stated convention rather than a single pass. Say the order out loud before you build it: settle what survives closing, roll or cancel what does not, rebuild both tests on combined inputs, then iterate until the answer stops moving.

Matching metrics to the right measure

This is where most multiple errors come from, and the rule is simple once you see it. Ask who has a claim on the number in the denominator. If the metric is available to all capital providers, both lenders and shareholders, pair it with enterprise value. If it is available only after lenders have been paid, pair it with equity value.

EBITDA, EBIT and revenue all sit above interest, so all of them belong with enterprise value. Net income and earnings per share sit below interest, so they belong with equity value. That is why P/E uses equity value and EV/EBITDA does not, and why an EV/net income multiple is meaningless.

The same business, financed two ways

The cleanest way to feel why this matters is to take one business and change nothing except its funding. Two companies run identical operations. Both earn 100 of EBITDA and 80 of EBIT. One is funded entirely with equity. The other borrowed 300 at 5% and used the proceeds to buy back its own shares.

The operations never moved, so the operating value never moved. Both businesses are worth 1,000 as enterprises. But the levered company owes 300 of that to lenders, so only 700 is left for its shareholders. Equity value fell by exactly the debt raised, which is the arithmetic of the buyback.

Now look at earnings. The unlevered company pays no interest, so at a 25% tax rate it earns 60 of net income. The levered one pays 15 of interest, leaving 65 of pre tax profit and 48.75 of net income. Lower earnings, and a lower share of the business, both caused purely by financing.

Put the multiples side by side and the point lands. EV/EBITDA is 10.0x for both, because the numerator and denominator both describe the whole business. P/E is 16.7x unlevered against 14.4x levered. The levered company looks 14% cheaper on P/E while being precisely the same business. That gap is leverage, not value, and screening on P/E alone would have you buy it for the wrong reason.

Check it yourself: equity value fell 300, exactly the debt raised, because the cash went straight out to shareholders in the buyback.

Where it gets interesting

A company with a large cash pile can have an enterprise value far below its market capitalisation, because the cash is stripped out. Occasionally enterprise value goes negative, when cash exceeds market cap plus debt. That usually says the market expects the business to burn that cash rather than return it.

Watch the fully diluted share count too. Equity value should reflect options, warrants and convertibles that are in the money, normally via the treasury stock method for options. Using basic shares understates equity value and quietly understates enterprise value with it, which is the sort of error that survives all the way into a valuation output.

Two more items quietly move a headline enterprise value. An earnout, a portion of the price contingent on the target hitting a target after close, is often disclosed at its full face value, but the acquirer's own accounts recognise it at acquisition date fair value under IFRS 3, a probability weighted, discounted estimate. That figure, sitting in the purchase price allocation footnote, is normally the more defensible one to use in a precedent multiple, and the merger models module works through how that allocation is built. And when the number in question is a minority stake in a private company rather than a whole business, a discount for lack of marketability often applies on top of the enterprise value bridge entirely, reflecting that an illiquid, non-controlling holding is worth less per share than the same business would be if it were listed and freely tradeable.

Treat a negative enterprise value as a message about your own work before you treat it as a message about the market. Cash exceeding market capitalisation plus debt implies the operations are valued at less than nothing, which does happen, most often at a company burning cash with no credible path to profitability, or one carrying an obligation the market is pricing and the accounts have not recognised. The same result is also produced by counting cash twice, by mixing millions with billions, by using a basic share count where dilution is large, or by picking up a consolidated cash balance that includes cash held inside a subsidiary the parent does not fully own and cannot freely move. Check the bridge first. The market being wrong is the last hypothesis to reach, not the first.