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CRE Debt Yield & Tripartite Loan Sizing Underwriter

Institutional commercial mortgage sizing engine. Simultaneously calculates maximum borrowing capacity across the three mandatory credit committee covenants: Debt Yield (NOI / Loan), Debt Service Coverage Ratio (DSCR), and Loan-to-Value (LTV) to pinpoint the governing bottleneck and required equity check.

Benchmark SOFR / Prime: Tier 1 Live Benchmarks Credit Committee Standards: CMBS & Bank Compliant Evaluated: Live
Verified Factual Baseline
Sector Presets:

Commercial Property & Financing Inputs All Values in USD ($)

Property Purchase Price / Appraised Value Cap Rate: 7.00%
Annual Net Operating Income (NOI) Effective In-Place Cash Flow
Mortgage Rate (%)
Amortization (Yrs)
Credit Committee Covenants & Hurdles
Min Debt Yield
Target DSCR
Max LTV (%)
Approved Commercial Loan Sizing
$7,000,000
Debt Yield Constrained
Required Borrower Equity $3,000,000 (30.0%)
Achieved Underwritten DSCR 1.28x
Achieved Debt Yield 10.00%
Executive Underwriting Verdict: The maximum loan request is governed strictly by the 10.00% minimum Debt Yield test. Even though the sponsor requested 75% LTV ($7.5M), lender policy restricts debt to $7.0M, requiring an additional $500,000 equity injection to close.

Tripartite Constraint Breakdown

Covenant Test Hurdle Rule Sizing Capacity Implied DSCR Implied DY Status

Interest Rate Shock & Sizing Sensitivity Analysis Annual Debt Service Sensitivity

Mortgage Rate Scenario Annual Loan Constant Annual Debt Service ($) DSCR-Constrained Debt Governing Loan Amount Required Equity Check Binding Constraint
Authoritative Reference METHODOLOGY • COVENANTS • PROOF

Institutional Methodology & Underwriting Dossier

This institutional underwriting engine calculates commercial real estate loan capacity by simultaneously evaluating the three primary credit committee covenants: Debt Yield (NOI / Loan), Debt Service Coverage Ratio (DSCR), and Loan-to-Value (LTV). Pinpoints the exact binding constraint bottleneck and computes required borrower equity injections.

1. Target Audience & Practical Application

How different financial market participants apply this quantitative model to real-world capital allocation:

Commercial Real Estate Sponsors & Borrowers

Determine the true maximum debt capacity of multifamily, industrial, retail, or office assets before submitting loan applications to commercial banks, CMBS conduits, or life insurance lenders.

Commercial Lenders & Credit Committees

Stress-test debt service coverage, minimum debt yields, and exit refinancing feasibility across elevated floating-rate and permanent fixed-rate financing environments.

Commercial Mortgage Brokers & Intermediaries

Package loan requests with institutional tripartite sizing summaries, identifying whether debt yield or DSCR is the restrictive sizing governor.

Financial Advisors & Family Offices

Evaluate commercial real estate debt risk, equity-gap exposure, and capital stack structures across private real estate funds and direct syndications.

Real Estate Finance Students & Analysts

Master the practical credit mechanics of commercial underwriting, understanding why debt yield provides a pure cash-on-cash metric independent of interest rates and cap rates.

2. Tripartite Commercial Loan Sizing Equations

1. Maximum Loan by Debt Yield Constraint:
Max LoanDY = Net Operating Income (NOI) / Minimum Required Debt Yield

2. Maximum Loan by Debt Service Coverage Ratio (DSCR):
Max LoanDSCR = Net Operating Income (NOI) / (Target DSCR × Annual Loan Constant)

3. Maximum Loan by Loan-to-Value (LTV):
Max LoanLTV = Appraised Property Value × Maximum Permissible LTV

4. Binding Credit Committee Sizing Decision:
Approved Loan Amount = min(Max LoanDY, Max LoanDSCR, Max LoanLTV)

3. Institutional Lending Standards & Underwriting Hurdles

4. Frequently Asked Questions (FAQ)

What is a Debt Yield and how is it calculated in commercial real estate?
Debt Yield is the ratio of a property's annual Net Operating Income (NOI) to the total commercial loan amount (Debt Yield = NOI / Loan Amount). Unlike DSCR or capitalization rates, Debt Yield measures the lender's cash-on-cash return if they were to foreclose and take ownership of the property tomorrow, completely independent of interest rates, amortization, or property appraisals.
Why do commercial lenders and CMBS conduits prefer Debt Yield over LTV?
Property appraisals and capitalization rates can be distorted by market exuberance or illiquid sales comps. Debt Yield ignores valuation estimates entirely and focuses exclusively on verifiable in-place property cash flow relative to debt principal, providing lenders a bulletproof margin of safety.
What is the Tripartite Sizing Test in commercial loan underwriting?
Institutional lenders size commercial mortgages by testing three separate constraints simultaneously: (1) Maximum Loan by LTV, (2) Maximum Loan by DSCR, and (3) Maximum Loan by Debt Yield. The final loan offer is strictly capped at the lowest of the three results, known as the 'binding constraint'.
How do rising interest rates shift the binding constraint from LTV to DSCR or Debt Yield?
In low interest rate environments, LTV is typically the binding constraint. When interest rates rise, annual debt service increases dramatically, causing DSCR hurdles (e.g. 1.25x) and minimum debt yield thresholds (e.g. 10.0%) to severely reduce borrowing capacity, forcing borrowers to inject more cash equity to close deals.