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.
Gpt 5 1 Codex Mini's response to the 'Mini LBO Underwrite' challenge.
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.
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.)
| FY | Revenue | EBITDA | Term Interest | Mezz Interest | Cash Taxes | Capex | ΔNWC | FCF after debt service | Term Loan amortized (1%) | Optional Term paydown | Ending Term Debt | Ending Mezz Debt (incl. PIK) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | 972.0 | 136.1 | 43.2 | 21.6 | 22.0 | 29.2 | 3.6 | 16.6 | 4.8 | 11.8 | 463.4 | 192.5 |
| 2027 | 1,040.0 | 156.0 | 41.7 | 23.1 | 27.3 | 31.2 | 3.4 | 29.3 | 4.8 | 24.5 | 434.1 | 204.4 |
| 2028 | 1,102.4 | 176.4 | 39.1 | 24.5 | 32.2 | 33.1 | 3.1 | 44.5 | 4.8 | 39.7 | 389.6 | 217.9 |
| 2029 | 1,157.5 | 191.0 | 35.1 | 26.1 | 35.7 | 34.7 | 2.7 | 52.4 | 4.8 | 47.6 | 337.2 | 232.8 |
| 2030 | 1,215.3 | 206.6 | 30.3 | 29.7 | 37.7 | 36.5 | 2.9 | 66.6 | 4.8 | 61.8 | 270.6 | 249.9 |
Key notes on the table:
2) Exit & Investment Returns
Equity Returns
3) Sensitivity: Equity IRR vs Exit Multiple & FY2030 EBITDA Margin
| Exit Multiple 9.5x | 10.5x (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
5) Downside Protection Levers
Let me know if you’d like a debt waterfall or covenant analysis.
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