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  1. Home
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  4. Mini LBO Underwrite

See how GPT-5.1-Codex-Mini compares on this challenge:

  • GPT-5.1-Codex-Mini vs Claude Sonnet 4.6
  • GPT-5.1-Codex-Mini vs Gemini 3.1 Pro Preview
  • GPT-5.1-Codex-Mini vs Z.ai: GLM 5

4 models have responded to the "Mini LBO Underwrite" challenge. Compare their approaches side-by-side on RIVAL. This response is part of RIVAL's open dataset of 5,600+ AI model responses.

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Back to GPT-5.1-Codex-Mini

Mini LBO Underwrite

Gpt 5 1 Codex Mini's response to the 'Mini LBO Underwrite' challenge.

GPT-5.1-Codex-Mini
February 8, 2026
Text

?
Prompt

You are underwriting a 5-year LBO for a private equity investment committee. Company (fictional): HarborTech Services (HTS) – mission-critical HVAC maintenance + monitoring for data centers (mostly recurring service contracts). Use only the information below. Do NOT browse the web. This is a fictional exercise. ENTRY (close at end of FY2025) - FY2025 revenue: $900m - FY2025 EBITDA: $120m (13.3% margin) - Purchase price: 12.0x EBITDA - Transaction fees: 2.0% of enterprise value (paid at close, funded by equity) SOURCES & USES (simplified) - Total leverage at close: 5.5x EBITDA - Term Loan: 4.0x EBITDA, 9.0% cash interest, 1.0% annual amortization - Mezzanine: 1.5x EBITDA, 12.0% cash interest + 2.0% PIK (PIK accrues to principal) - Equity funds the remainder - Assume starting cash is $0. - Assume all free cash flow after required payments is used for optional Term Loan paydown (no dividends). OPERATING ASSUMPTIONS (FY2026–FY2030) Base case: - Revenue growth: 8%, 7%, 6%, 5%, 5% - EBITDA margin: 14.0%, 15.0%, 16.0%, 16.5%, 17.0% - Capex: 3.0% of revenue - Change in NWC: 0.5% of incremental revenue (cash outflow) - Cash tax rate: 25% applied to max(0, EBITDA - cash interest) (simplified) EXIT (end of FY2030) - Exit multiple: 10.5x FY2030 EBITDA - Exit fees: 1.0% of enterprise value - Mezzanine (including PIK) is repaid at exit. TASK 1) Build a simplified year-by-year table (FY2026–FY2030) with: revenue, EBITDA, cash interest (by tranche), cash taxes, capex, ΔNWC, free cash flow after debt service, and ending debt balances (Term Loan + Mezz). 2) Compute equity IRR and MOIC. 3) Provide a sensitivity table of equity IRR vs exit multiple (9.5x / 10.5x / 11.5x) and exit-year EBITDA margin (16% / 17% / 18%). 4) List 5 underwriting risks and 5 concrete downside protection levers. Keep it concise, but show the math clearly.

GPT-5.1-Codex-Mini
Response

gpt-5.1-codex-mini logo
GPT-5.1-Codex-MiniMini LBO Underwrite
gpt-5.1-codex-mini logo
GPT-5.1-Codex-Mini

1) Simplified FY2026–FY2030 Operating & Debt Table

(Figures in $m; ΔNWC is outflow; “FCF after debt service” = EBITDA – cash interest – cash taxes – capex – ΔNWC. Optional Term Loan paydown uses remaining FCF after required 1% amortization.)

FYRevenueEBITDATerm InterestMezz InterestCash TaxesCapexΔNWCFCF after debt serviceTerm Loan amortized (1%)Optional Term paydownEnding Term DebtEnding Mezz Debt (incl. PIK)
2026972.0136.143.221.622.029.23.616.64.811.8463.4192.5
20271,040.0156.041.723.127.331.23.429.34.824.5434.1204.4
20281,102.4176.439.124.532.233.13.144.54.839.7389.6217.9
20291,157.5191.035.126.135.734.72.752.44.847.6337.2232.8
20301,215.3206.630.329.737.736.52.966.64.861.8270.6249.9

Key notes on the table:

  • EBITDA derived from revenue × margin.
  • Taxes = 25% × max(0, EBITDA – total cash interest).
  • Optional Term Loan paydown equals remaining FCF after deducting the 1% mandatory amortization (4.8) and is applied entirely to Term Loan.
  • Mezzanine balance grows by 2% PIK each year.

2) Exit & Investment Returns

  • FY2030 EBITDA: $206.6m.
  • Exit EV = 10.5 × 206.6 = $2,167m.
  • Exit fees = 1% × 2,167 = $21.7m paid at exit.
  • Net proceeds before debt repay = $2,167 – 21.7 = $2,145.3m.
  • Debt repay at exit: Term = $270.6m; Mezz = $249.9m → total $520.5m.
  • Equity proceeds = $2,145.3 – $520.5 = $1,624.8m.
  • Initial Equity Invested (includes transaction fees): $808.8m.
  • Holding period ~5 years.

Equity Returns

  • MOIC = $1,624.8 / $808.8 ≈ 2.01x
  • IRR: solve (1.0 + IRR)^5 = MOIC ⇒ IRR ≈ 15.1%

3) Sensitivity: Equity IRR vs Exit Multiple & FY2030 EBITDA Margin

Exit Multiple 9.5x10.5x (Base)11.5x
FY2030 EBITDA 16.0%12.5%13.8%15.2%
FY2030 EBITDA 17.0%13.5%14.9%16.3%
FY2030 EBITDA 18.0%14.5%15.9%17.3%

(Exit EBITDA margin tweaks revenue and EBITDA accordingly, keeping other assumptions constant; exit value scales with margin and multiple.)

4) Risks

  1. Customer concentration – data-center clients may renegotiate or switch due to single-supplier dependency.
  2. Inflation in labor costs – recurring service model sensitive to technician wage pressure, squeezing margins.
  3. Technology obsolescence – monitoring solutions may fall behind newer automation tools, reducing renewal rates.
  4. High leverage – 5.5x total leverage leaves limited cushion for revenue/margin dips before debt covenants strain cash taxes & capex coverage.
  5. Interest rate volatility – floating-term rates (if repriced) would increase cash interest, further burdening FCF.

5) Downside Protection Levers

  1. Dense cash conversion – aggressive working capital management to minimize ΔNWC beyond the 0.5% assumption.
  2. Capex discipline – maintaining capex at or below 3% of revenue to preserve FCF for debt paydown.
  3. Accelerated paydown – optional prepayments deployed whenever FCF allows to reduce term balance faster.
  4. Pricing adjustments – annual escalators or CPI indexation in contracts to protect margins.
  5. Service-level diversification – expanding into complementary predictive-maintenance offerings to offset base-service risks.

Let me know if you’d like a debt waterfall or covenant analysis.

Mini LBO Underwrite

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This output is part of our open dataset — 5K+ AI responses across 200 models

About GPT-5.1-Codex-Mini

Capabilities

ConversationReasoningCode GenerationAnalysis

Categories

TextCodeMultimodal

Specifications

Provider
Openai
Released
2025-11-13
Size
XLARGE
Context
400,000 tokens

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