Costs to Achieve in M&A, Explained
The question
What are 'costs to achieve,' what magnitude is typical relative to run-rate synergies, and why does ignoring them flatter year-one deal math?
General educational practice only. This is not an actual, confidential, leaked, or firm-provided interview question. Check important technical details against primary learning materials.
The answer
Costs to achieve are the real cash outflows required to actually capture synergies, like severance, systems migration, lease breakage, and rebranding, spent over the first year or two before any savings materialize. In a typical deal, they run between one and one-and-a-half times the run-rate cost synergies.
Ignoring them flatters year-one deal math because synergies phase in gradually, usually only a third in year one, so if you skip the integration spend you are showing savings with none of the upfront cash cost to get there. That makes the first year look much better than reality: you get credit for improving earnings while hiding the check you have to write to make it happen.
A model that assumes full run-rate from day one with no costs to achieve is a red flag, because in practice you are almost always net cash negative in that initial period.
Accretion / dilution
| Acquirer standalone net income | 300 |
| + Target net income | 80 |
| + After-tax synergies | 15 |
| − After-tax incremental interest | (10) |
| Pro forma combined net income | 385 |
| Acquirer standalone EPS | $3.00 |
| Pro forma share count | 125 |
| Pro forma EPS | $3.08 |
| Accretion | 2.7% |
Also asked as
- Define revenue synergies and cost synergies, give two concrete examples of each, and explain why the market systematically gives more credit to cost synergies.
- A deal announces $75M of pre-tax run-rate cost synergies. With a 25% tax rate and a 10% capitalization rate, what premium could the buyer justify on synergies alone?
- Explain the statement: 'The premium determines who captures the synergies.' Include the synergies-paid-away formula and what it means when the ratio exceeds 100%.
- Management claims $150M of revenue synergies from cross-selling. Walk through how you would convert that claim into a bankable EBIT number, naming every haircut you would apply and why.
- Give three ways synergy estimates are commonly inflated or double-counted in deal models, and how a skeptical advisor would scrub each one.
- A merger is dilutive by $0.12 of EPS on 520M pro forma shares; the tax rate is 25%. Synergies phase in 40%/80%/100% over three years. What run-rate pre-tax synergies are needed for EPS neutrality at full run-rate, and is the deal accretive in year two at that level? Show the math.
- Buyer pays a $900M premium for a target, citing $80M of pre-tax cost synergies and $100M of revenue synergies at a 30% incremental margin (tax rate 25%, capitalization rate 8%, costs to achieve $100M). Compute the value created or destroyed for the buyer under (a) full credit to both categories and (b) full cost / zero revenue credit, and state what you'd tell the board.
- Two bidders compete for the same asset: a strategic with $130M of pre-tax synergies and a sponsor with none, but the sponsor can lever to 6.5x EBITDA. Explain, with a framework for each bidder's maximum price, why the strategic should usually win, and describe a realistic scenario where the sponsor wins anyway.
- Your client's deal thesis requires 100% of both cost and revenue synergies just to break even against the premium. Construct the advisory argument: what does this imply about value transfer, what restructuring of price or consideration would you propose, and at what point do you advise walking away?
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The rest of this topic
Accretion and dilution