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Based on the highest ranked content on WSO, here are some of the most challenging LBO modeling tests and questions that candidates have encountered:

  1. Complex Capital Structures:

    • Questions involving multiple layers of debt, preferred equity, and mezzanine financing.
    • Scenarios requiring detailed understanding of covenants and inter-creditor agreements.
  2. Detailed Sensitivity Analysis:

    • Building models that test various scenarios such as changes in interest rates, growth rates, and exit multiples.
    • Understanding the impact of these changes on IRR and MOIC.
  3. Intricate Cash Flow Waterfalls:

    • Constructing cash flow waterfalls that accurately reflect the priority of payments among different tranches of debt and equity.
    • Ensuring correct allocation of cash flows to different stakeholders.
  4. Operational Assumptions:

    • Creating detailed operational models that include revenue build-ups, cost structures, and working capital requirements.
    • Integrating these operational assumptions into the LBO model.
  5. Exit Strategies and Valuations:

    • Questions on determining the optimal exit strategy and timing.
    • Valuing the company at exit using various methods such as precedent transactions, comparable companies, and DCF.
  6. Debt Schedules and Amortization:

    • Constructing detailed debt schedules that include amortization, interest calculations, and refinancing scenarios.
    • Understanding the implications of different debt structures on the overall model.
  7. Equity Returns Analysis:

    • Calculating and interpreting equity returns for different stakeholders.
    • Understanding the impact of different financing structures on equity returns.
  8. Scenario Analysis and Stress Testing:

    • Building models that can handle multiple scenarios and stress tests.
    • Analyzing the robustness of the model under adverse conditions.

For comprehensive preparation, consider enrolling in the Private Equity Interview Course offered by WSO, which includes 9 LBO modeling tests and more. This course will provide you with the necessary skills and practice to tackle these challenging questions effectively.

Sources: What's the hardest interview question you were ever asked?, NEW Financial Modeling Training Courses, what's the hardest technical you've been asked in interviews, https://www.wallstreetoasis.com/forum/private-equity/wso-pe-guide-full-lbo-practice-test?customgpt=1, Guide to Lateraling in 2021

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Id spend your time prepping for what you could get on average and not stress / focus too much on the extreme scenarios! best of luck

one that i got that was particularly tricky included a bunch of cap table math with participating / non participating preferreds etc. mostly because i've never done that before. had i done that on the job likely would have been easier

it wasnt brutal per se just tough

 
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For someone with experience in PE, somehow the hardest ones for me are the speed ones where you're expected to do full 3-statements off little info and very little time. Obviously I can do it, but something about case studies makes me want to differentiate myself (okay, let me think about this assumption, maybe add a small toggle here, etc) which burns up useful time. Weirdly it's harder to disassociate and rip through it like back in the day when I had no idea what I was doing... 

 

Add-on m&a, complicated opmodel assumptions, complex debt schedules with lots of different instruments and covenants

Also not easy to make own forecasts under time pressure if they only give you some historicals

None of this is revolutionary but they generally try to catch you off-guard with something you haven’t seen before where you have to think for a moment

 

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