Glossary · Underwriting metric
Debt Service Coverage Ratio (DSCR)
Also called: debt service cover ratio
The debt service coverage ratio (DSCR) is the ratio of cash flow available for debt service to scheduled interest and principal in the same period, showing whether an asset or borrower can meet its loan payments from operating cash flow.
A DSCR of 1.25x means the property, project or company generates $1.25 of cash for every $1.00 of loan payments due. Below 1.0x, cash flow does not cover the payments and the shortfall must come from reserves or the owner. Lenders use DSCR to size loans and as a trigger for trapping cash.
Formulas
Debt service coverage ratio
- CF
- NOI or net cash flow (real estate); CFADS, cash flow available for debt service (project finance); EBITDA less capex and taxes (corporate)
- Scheduled principal
- contractual amortisation in the period; balloon repayments at maturity are excluded
For interest-only loans, DSCR reduces to cash flow over interest. Project finance distinguishes historic from projected DSCR and the minimum from the average over the loan life.
Loan life coverage ratio (project finance)
- r
- discount rate, usually the debt's interest rate
- D0
- debt outstanding at the calculation date
LLCR summarises coverage over the whole loan life, where DSCR measures a single period. The version shown discounts each period's CFADS at the end of the period at the debt's interest rate and makes no adjustment for a debt service reserve account; some financing documents add the reserve balance to the numerator, and the project life cover ratio uses the project life instead of the loan life. Discount-rate and CFADS definitions are set in the financing documents.
Variants by asset type
| Context | Numerator | Typical use |
|---|---|---|
| Commercial real estate | NOI or net cash flow after reserves | sizing; cash-management triggers |
| Project finance and infrastructure | cash flow available for debt service (CFADS): revenue less operating costs, taxes and maintenance capex | sculpting debt repayment; distribution lock-ups; default triggers |
| Corporate | EBITDA less capex and taxes | covenant; close to FCCR |
In project finance, lenders often sculpt the repayment schedule so that projected DSCR is constant over the loan's life.
How lenders use DSCR
- Sizing. Maximum debt service = cash flow / minimum DSCR, and loan size follows from the rate and amortisation. In real estate, DSCR is applied together with LTV and debt yield; the tightest test sets the loan.
- Cash traps and lock-ups. Loan documents commonly provide that if DSCR falls below a threshold, excess cash is retained, or distributions to equity are blocked.
- Defaults. A lower threshold is often an event of default.
Sensitivities
On a floating-rate loan, debt service rises with the base rate, so DSCR falls unless the borrower has hedged. Amortisation also matters: the same income gives a lower DSCR on a short amortising loan than on an interest-only loan. Compare DSCRs only on the same debt-service basis.
Worked examples
Illustrative commercial real estate loan
A property produces $6.5m of NOI. Its loan requires $5.2m a year of debt service ($3.9m interest and $1.3m amortisation). DSCR is 1.25x. A lender requiring a minimum 1.25x would have sized the loan exactly to this payment.
Project finance period DSCR
A contracted solar project produces $18m of CFADS in a year, against scheduled debt service of $13.5m. DSCR is 1.33x.
Loan life coverage
If CFADS is a flat $18m for the ten remaining years of a $100m loan and is discounted at 6%, its present value is $132.5m. The loan life coverage ratio (LLCR) is 1.32x.
Examples are illustrative; figures are not market data.
Not the same as
- Interest Coverage Ratio (ICR): The interest coverage ratio (ICR) covers interest only. DSCR also covers scheduled principal.
- Debt Yield: Debt yield is NOI over the loan balance and does not depend on the interest rate or amortisation.
- Fixed Charge Coverage Ratio: FCCR is the corporate cousin. It usually adds leases and other fixed charges to the denominator, and credit agreements define it bespoke.
Common mistakes
- Comparing an interest-only DSCR with an amortising-loan DSCR.
- Using projected or underwritten cash flow and calling it in-place coverage.
- Including the balloon payment at maturity in debt service, which makes DSCR meaningless in the final year.
Edge cases
- A project with front-loaded construction or ramp-up has no meaningful DSCR until operations begin. Lenders rely on reserves and projected DSCR.
- Where the loan has a large debt-service reserve account, a period DSCR below 1.0x need not mean a missed payment.
Sources
- Comptroller's Handbook: Commercial Real Estate Lending (Version 2.0). Office of the Comptroller of the Currency (OCC), Version 2.0, March 2022. Status: current Comptroller's Handbook booklet (checked 2026-10-01). pp. 40-43; glossary p. 138 — supports: DSCR is NOI (or cash flow) divided by annual debt service and measures the ability to service debt; interest-only or long amortisation raises DSCR; covenant DSCR definitions may differ from underwriting DSCR; DSCR is a common financial covenant and is used with LTV and debt yield to set loan amounts
- Global Definitions Database (GDD). INREV (hosted); entries attributed to INREV, NCREIF or NCREIF PREA, Per-entry versions and dates (entries opened 2026-10-01). Status: current (checked 2026-10-01). D0231 DSCR (INREV, 2020-03-20); D0232 DSCR (RS) (NCREIF PREA, 2020-04-29) — supports: DSCR is NOI (projected over four quarters in the INREV definition) over interest and scheduled amortisation; above 1 cash flow covers debt service, below 1 it does not
Related terms
6 termsConcept record
- Concept ID
- ALTSS-CREDIT-046
- Classification
- Underwriting metric
- Topics
- Private credit · Real estate · Infrastructure
- Version
- 2.0.0
- Last reviewed
- Structured data
- JSON