Quick Answer
A debt-financed deal must clear the acquirer's credit framework. The three key pro-forma metrics are total debt to earnings before interest, taxes, depreciation, and amortization (EBITDA), EBITDA to interest (coverage), and funds from operations (FFO) to debt. It can trigger a downgrade when the resulting pro-forma leverage no longer supports the acquirer's existing rating under the applicable agency's methodology.
Credit analysis sits next to valuation as the second go / no-go check before bid commitment. A debt-financed deal that clears valuation but blows through covenants or triggers a downgrade can still be infeasible.
What Three Credit Ratios Does the Banker Run on the Pro-Forma Entity?
The banker runs the pro-forma combined entity through three standard credit ratios.
| Metric | Formula | What It Tests |
|---|---|---|
| Total debt / EBITDA | Total debt ÷ trailing-twelve-month EBITDA | Compares pro-forma leverage with the issuer's covenants, rating profile, peers, and rating-agency methodology |
| EBITDA / interest (coverage) | EBITDA ÷ interest expense | Tests the issuer's ability to service interest under base and downside cases |
| FFO / debt | Funds from operations ÷ total debt | Rating-agency cash-flow proxy used in published rating methodologies |
Think of it this way: total debt to EBITDA tells the lender how big the debt stack is relative to the earnings supporting it. Interest coverage tells the lender how much margin for error there is in covering interest payments. FFO to debt is the rating agency's cash-flow lens on the same question.
How Do Rating Agencies React to Pro-Forma Leverage Changes?
Rating agencies (Standard & Poor's, Moody's, Fitch) react to pro-forma leverage changes on their own case-specific timeline, which can include an assessment around announcement and continued review of the deleveraging trajectory.
- Downgrade trigger: a debt-funded deal can cause a downgrade when the resulting credit profile no longer supports the existing rating under the applicable agency's methodology
- Downgrade consequences: higher borrowing cost, a shrunk investor base (some mandates exclude sub-investment-grade debt), possible covenant tripwires
- Deleveraging plan: agencies may consider a credible plan, but the timing and rating response are case-specific
Exam Tip: Gotchas
- Investment-grade-to-high-yield is the binary that matters most. Crossing that line shrinks the investor base because many institutional mandates exclude sub-IG paper, and the cost of debt steps up.
- A deleveraging plan can influence the rating outcome, but only if it is CREDIBLE. Rating agencies look at the free-cash-flow trajectory and the acquirer's track record; the specific timing and grace period are case-specific, not a fixed formula. A plan that depends entirely on aspirational revenue synergies is not credible.
How Are Existing Facility Covenants Tested Pro-Forma?
Existing facility covenants must be tested pro-forma. A breach at close requires either an amendment (lender consent) or a refinancing (replacement of the facility).
- Typical maintenance covenants: maximum total debt to EBITDA, minimum interest coverage, minimum net worth
- Pro-forma testing: the covenants are tested against the combined-entity numbers, not the standalone acquirer numbers
- Breach response options:
- Amendment with existing lenders (consent fee, possibly tighter terms going forward)
- Refinancing into a new facility (resets the covenant package but typically widens the spread)
Think of it this way: covenants set the ceiling on how much leverage the deal can add. Even if the rating agencies do not flinch, the existing facility documents can independently block a deal that breaches a maintenance test at close.
Exam Tip: Gotchas
- Covenant compliance and rating-agency reaction are two separate, independently binding checks, not one universal sequence. Existing facility documents are signed contracts; lender consent is a hard requirement if covenants would be breached. Rating-agency reactions are discretionary and forward-looking. Either check can independently make a deal infeasible, so the banker confirms both, not just one.
What Should You Check on Exam Day?
- Can you name the three pro-forma credit metrics (total debt/EBITDA, EBITDA/interest coverage, FFO/debt) and what each one tests?
- Do you know that a downgrade is triggered when the pro-forma credit profile no longer supports the existing rating under the applicable agency's methodology, not a single memorized leverage number?
- Can you explain the two ways a pro-forma covenant breach at close gets resolved (amendment versus refinancing)?