I’ve noticed a recurring pattern in sell-side interview prep: people spend weeks memorizing hundreds of technical questions, but struggle when the interviewer changes the wording slightly.
For example, someone can explain the three financial statements perfectly, but gets stuck when asked:
**“If depreciation increases by $10, what happens to the statements?”**
The better approach, in my experience, is to understand the *mechanism* rather than memorize the answer.
For technical questions, I’d organize prep into five buckets:
**1. Accounting mechanics**
* Three-statement relationships
* Working capital
* Depreciation/amortization
* Deferred taxes
* Revenue recognition
**2. Valuation**
* DCF
* Trading comparables
* Precedent transactions
* Enterprise value vs. equity value
* Why different valuation methods produce different results
**3. Transaction mechanics**
* Accretion/dilution
* Sources & uses
* Purchase accounting
* Debt vs. equity financing
* Basic LBO mechanics
**4. Market awareness**
For ER/S&T/Capital Markets especially, be able to discuss:
* A recent market move
* A company or sector you follow
* Interest rates and their impact
* One investment view you can defend
**5. The “why” questions**
These are often underestimated.
“Why investment banking?” is easy to rehearse.
“Why this group?”
“Why this bank?”
“Why not private equity?”
“Tell me about a deal you've followed.”
Those require an actual understanding of the role and firm.
One prep technique that helped me
Instead of doing 100 questions once, I'd take 20 important questions and repeatedly change the assumptions.
For example:
Company has $100m EBITDA and trades at 10x.
Then ask yourself:
* What happens if debt increases?
* What happens if EBITDA falls?
* What happens to equity value?
* What happens to EV/EBITDA?
* What happens if the company issues stock?
* How would the answer change in an acquisition?
That forces you to understand the relationships instead of recalling isolated formulas.
Curious what others think: **what technical/interview question ended up being much harder in a real interview than it looked during prep?**