Accretion/Dilution Analysis

An accretion/dilution analysis checks whether a planned acquisition increases or decreases the buyer's earnings per share. If earnings per share increase, the deal is accretive. If they decrease, it is dilutive. Buyers use this analysis to assess early on how an acquisition changes reported earnings per share.

It is built as a pro forma model: the earnings of buyer and target are combined for the coming one to three financial years, adjusted for expected synergies and for the financing effect, and then divided by the future share count. In a cash deal, forgone interest income or additional debt interest after tax reduces earnings. In a share deal the denominator grows instead by the newly issued shares. Purchase price allocation adds a further effect, because intangible assets with finite useful lives recognised on acquisition are amortised and depress reported profit. Ignoring other transaction effects and assuming positive earnings, in an all-share transaction the combination is accretive if the buyer's price/earnings ratio is higher than the ratio implied by the target’s purchase price. In the opposite case dilution results.

The distinction from valuation matters: the analysis says nothing about whether the price is appropriate, only how the deal affects a single accounting metric. A transaction can be accretive and still destroy value, for example when cheaply financed debt carries a target with weak returns on capital. In practice a break-even point is therefore also calculated, meaning the level of synergies at which dilution turns into accretion, together with sensitivities on price, financing mix and interest rate.

For listed buyers the result is immediately relevant to communication, because analysts routinely treat the claim that a deal is accretive from year one or two as a test of management discipline. An assessment of valuation levels is often added, because an acquisition looks accretive on paper as soon as cheap debt carries a target on a low multiple, without any operational improvement. Timing is a further point: a transaction that dilutes in the first year because of integration costs and adds from the second is usually presented across both years. In Germany the analysis matters almost exclusively for listed acquirers, because the metric attaches to a publicly observed share count.