The Underwriting Question No Lender Should Skip

A sponsor presents a $10M EBITDA manufacturing business. The CIM shows three years of steady growth, a clean balance sheet, and a well-prepared add-back schedule that moves reported EBITDA of $8.2M up to $10M through a series of normalizing adjustments. The deal is priced at 5.5× Adjusted EBITDA. The leverage at close will be 4.0×. On paper, the credit looks manageable.

But here is the practitioner’s question: Which version of EBITDA are you actually underwriting? The seller’s adjusted figure is a starting point; it is not the conclusion. As experienced credit teams know, every dollar of disputed or unsupported add-back is multiplied by the valuation multiple, compressing real debt coverage and inflating apparent headroom. A single rejected $100,000 add-back at a 6× multiple erases $600,000 of enterprise value and tightens leverage ratios in ways that matter at the margin.

The discipline of EBITDA normalization sits at the heart of private credit underwriting. Getting it right requires a rigorous, documented methodology, not a rubber stamp of the sponsor’s schedule. This article teaches that methodology from the ground up.

The Normalization Framework: From Reported to Underwritten EBITDA

EBITDA normalization is the process of adjusting a company’s financials to reflect its true, sustainable earning potential under ordinary ownership and operating conditions. The objective is to strip out distortions (owner-specific costs, non-recurring events, and accounting timing differences) so that lenders can assess whether the business can comfortably service debt post-transaction.

Practitioners distinguish two related but distinct concepts:

• Adjusted EBITDA: The bridge from reported financials to a cleaned-up earnings figure after removing one-time and non-operating items.
• Normalized EBITDA: Goes further: it reflects the earnings a buyer can sustainably underwrite after accounting for steady-state staffing, market compensation, and necessary reinvestment. Normalized EBITDA can be lower than adjusted EBITDA when the business requires additional costs under new ownership.

The most common add-back categories that lenders evaluate include: excess owner compensation above market replacement cost; owner perks and discretionary personal expenses run through the business; one-time legal settlements; transaction-related expenses; non-recurring severance and restructuring costs; and related-party rent or management fee normalization.

Each category carries a different evidentiary standard. Lenders treat seller-provided schedules as a starting point, not a conclusion, and they independently re-underwrite each line item. The standard is not perfection; it is traceability and reasonableness. Can the adjustment be traced to records? Is the rationale clear? Would the cost truly disappear or change under new ownership?

Worked Example: $10M EBITDA Manufacturing Company

At a 5.5× multiple, the $790,000 gap between the seller’s figure and the lender’s underwritten figure represents roughly $4.3M of enterprise value, a material difference that reshapes both leverage and return assumptions.

Walking Through the Metrics: Leverage, Coverage, and Covenant Headroom

Once the underwritten EBITDA figure is established, lenders calculate their core credit metrics against that number, not the sponsor’s. Using the example above:

• Total Debt: $40,000,000 (4.0× seller EBITDA at close)
• Leverage on Lender EBITDA: $40M ÷ $9.21M = 4.34×: meaningfully above the 4.0× headline
• Debt Service Coverage Ratio (DSCR): Assuming $5M annual debt service, DSCR = $9.21M ÷ $5M = 1.84×. A DSCR below 1.25× is typically a hard stop for institutional lenders.
• Interest Coverage: At a blended rate of 9%, interest expense ≈ $3.6M. ICR = $9.21M ÷ $3.6M = 2.56×: above the common 2.50× minimum covenant floor seen in institutional credit agreements.

Covenant headroom is the final dimension. If the credit agreement sets a maximum leverage covenant of 4.5×, the lender’s underwritten entry leverage of 4.34× leaves only 16 basis points of headroom, barely 3.6% above the breach threshold. Under most institutional early-warning frameworks, headroom below 10% of the covenant level triggers enhanced monitoring.

Stress Test: Revenue Decline Scenario

Apply a 10% revenue decline with margins compressing 150bps (a mild-to-moderate stress scenario for a cyclical manufacturer). Underwritten EBITDA falls from $9.21M to approximately $7.8M. Leverage moves from 4.34× to 5.13×, breaching the 4.5× covenant. The DSCR drops to 1.56×. This is not a catastrophe scenario, it is a modest recession assumption, and it already surfaces structural covenant risk. This is precisely why lenders underwrite to their own EBITDA, not the seller’s.

What Institutional Lenders Require: Standards, Data, and Red Flags

The Tightening Underwriting Environment

The private credit market has shifted materially toward stricter EBITDA standards. As rates rose through 2023 and 2024, lenders pushed back on add-back caps, look-forward windows, and evidence standards. Credit committees now flag deals where a high percentage of EBITDA comes from run-rate or non-cash add-backs, treating that dependence as credit risk rather than financial engineering, a shift aligned with broader private credit market trends toward tighter underwriting.

Under IFRS 18, issued in April 2024, reporters are now required to disclose management-defined performance measures with clear reconciliations, raising the evidentiary bar for EBITDA adjustments in cross-border credit transactions. In today’s deal environment, buyers are demanding a more robust due diligence standard, grounded in defensible metrics, and seller EBITDA normalization adjustments are under sharper scrutiny than at any point since the 2021–2022 boom cycle.

Common Red Flags for Credit Committees

• Revenue concentration: Any single customer contributing more than 10% of revenue is a clear QoE red flag that elevates cash flow volatility assumptions.
• Proof-of-cash gaps: Discrepancies between reported revenue and actual bank deposits signal potential revenue recognition manipulation.
• Pro-forma “future” savings: Anticipated cost savings that have not yet materialized but are embedded in the asking price are among the most frequently rejected add-backs in institutional underwriting.
• Relabeled recurring costs: Sellers who characterize ongoing operational costs as one-time consistently lose credibility and leverage during diligence.
• Unrecorded liabilities: Accrued vacation time, deferred warranty obligations, or supplier invoices held after year-end that are not on the books, common in owner-managed businesses.
• Opaque “Misc” accounts: Catch-all general ledger categories that obscure the nature of expenses and resist normalization.

📊 Data Box: Private Credit Performance Benchmarks

EBITDA Normalization Underwriting Checklist

The following step-by-step framework reflects institutional-grade diligence standards for evaluating adjusted EBITDA in a private credit context.

Step 1: Obtain Source Documents

• ☐ Three years of audited or reviewed financial statements plus trailing twelve months (TTM) interim financials
• ☐ Month-by-month general ledger detail for each add-back category
• ☐ Seller’s formal EBITDA bridge with line-by-line support schedules
• ☐ Quality of Earnings (QoE) report prepared by an independent accounting firm

Step 2: Re-underwrite Each Add-Back Independently

• ☐ Test each adjustment for traceability to source records (invoices, contracts, payroll records)
• ☐ Apply the market replacement cost test to all owner/management compensation adjustments
• ☐ Confirm that legal add-backs relate to closed matters with no ongoing exposure
• ☐ Reject any adjustment contingent on post-close actions not yet executed
• ☐ Normalize related-party rent and management fees to third-party market equivalents
• ☐ Document lender’s accepted add-backs versus seller’s claimed add-backs in a reconciliation bridge

Step 3: Calculate Lender-Underwritten Credit Metrics

• ☐ Leverage ratio: Total Funded Debt ÷ Lender EBITDA (target: ≤4.5× for most senior secured situations)
• ☐ Debt Service Coverage Ratio (DSCR): Lender EBITDA ÷ Annual Debt Service (minimum: 1.25×)
• ☐ Interest Coverage Ratio: Lender EBITDA ÷ Cash Interest Expense (minimum: 2.5× typical)
• ☐ Fixed Charge Coverage Ratio (FCCR): (EBITDA − CapEx − Taxes) ÷ Debt Service

Step 4: Stress Test and Covenant Headroom Analysis

• ☐ Run a 10–15% revenue decline scenario and measure leverage and coverage ratio migration
• ☐ Quantify covenant headroom as a percentage of the threshold (flag any level below 15%)
• ☐ Model interest rate sensitivity if debt is floating rate

Step 5: Post-Close Monitoring Requirements

• ☐ Establish quarterly reporting obligations with lender EBITDA definition locked into the credit agreement
• ☐ Track realized versus planned synergies or cost savings that were included in underwritten EBITDA
• ☐ Set escalation triggers for covenant headroom tightening below agreed thresholds

Key Takeaways for Private Credit Practitioners

• 🔑 Seller EBITDA is a starting point, not a conclusion. Institutional credit committees re-underwrite every add-back against source documents. Lender-underwritten EBITDA frequently runs 5–15% below the seller’s headline figure, a gap that is magnified at transaction multiples and determines real leverage at close.
• 🔑 Normalized EBITDA and Adjusted EBITDA are not synonymous. Normalized EBITDA accounts for the steady-state costs required under new ownership (including management replacement, market-rate rent, and recurring investment) and can be lower than the seller’s adjusted figure even after accepting all legitimate add-backs.
• 🔑 Post-close cost savings have no place in underwritten EBITDA. Adjustments contingent on actions that have not yet occurred represent pro-forma speculation, not documented earnings, and they are routinely rejected by experienced credit committees.
• 🔑 Covenant headroom must be stress-tested at origination. In a market where 91% of broadly syndicated loans are covenant-lite, private credit lenders who retain maintenance covenants hold a structural monitoring advantage, but only if those covenants are calibrated against realistically underwritten EBITDA, not the seller’s optimistic figure.
• 🔑 Default risk is concentrated in the middle market. With private credit default rates reaching 2.46% in Q4 2025 (and the highest default cohort sitting at the $25M–$50M EBITDA band) lenders in this segment face the most acute exposure from aggressive EBITDA normalization practices. Rigorous underwriting discipline at origination remains the primary defense.