Non-agency RMBS / non-QM / investor-purpose
DSCR investor loans
status: draft
DSCR investor loans
DSCR (debt service coverage ratio) loans are underwritten primarily on property cash flow rather than borrower personal income. The borrower’s DTI is secondary or irrelevant; the property’s ability to cover the mortgage payment is primary. This makes DSCR the dominant product for real estate investors acquiring 1-4 unit rental properties.
How DSCR works
The calculation
DSCR = Net Operating Income / Debt Service (PITIA)
Numerator: Income
- In-place rent (actual lease): Gold standard. You have a signed lease with a tenant paying. Use the lesser of actual rent or market rent.
- Market rent (appraisal-based): Form 1007 rent schedule from the appraiser. Used when property is vacant or lease is below market.
- Short-term rental income: Airbnb/VRBO projections. Most capital providers haircut 20-30% or exclude entirely.
Denominator: PITIA (monthly)
- Principal: Based on amortizing schedule (or zero for I/O period)
- Interest: Current note rate (for ARMs, underwrite at fully indexed rate)
- Taxes: Annual property tax / 12
- Insurance: Hazard insurance / 12, flood if applicable
- Association fees: HOA, condo fees / 12
Example calculation
| Component | Monthly Amount |
|---|---|
| Gross rent | $2,500 |
| Less vacancy (assumed 5%) | ($125) |
| Net Operating Income | $2,375 |
| Principal & Interest | $1,650 |
| Taxes | $350 |
| Insurance | $125 |
| HOA | $100 |
| Total PITIA | $2,225 |
| DSCR | 1.07x |
This property barely covers debt service. A 1.07x DSCR leaves little margin for vacancy, rent decline, or unexpected expenses.
status: draft
DSCR thresholds by lender appetite
| DSCR | Market Perception | Typical Lenders |
|---|---|---|
| 1.30x+ | Conservative, preferred | Banks, insurance companies, prime non-QM |
| 1.20-1.29x | Standard | Most DSCR originators, warehouse lenders |
| 1.10-1.19x | Aggressive | Expanded DSCR programs, bridge lenders |
| 1.00-1.09x | Maximum stress | Limited lenders, requires compensating factors |
| Below 1.00x | Negative cash flow | Rarely financeable, requires cross-collateral or reserves |
Why 1.20x is the sweet spot: At 1.20x, the property can absorb one month of vacancy every five months and still break even. This provides reasonable cushion for rental real estate volatility.
Below 1.00x: The property doesn’t cover debt service even with full occupancy. Some lenders will finance negative cash flow properties in appreciating markets with borrower reserves, but this is rare and expensive.
status: draft
Performance benchmarks
| DSCR at Origination | Default Rate (12mo) | Typical LTV | Severity |
|---|---|---|---|
| 1.25x+ | 1.0-2.0% | 70-75% | 18-25% |
| 1.15x-1.24x | 2.0-3.5% | 73-77% | 20-28% |
| 1.00x-1.14x | 3.5-5.5% | 75-80% | 22-30% |
| Below 1.00x | 6.0-10.0% | 75-80% | 25-35% |
Aggregate DSCR benchmarks
| Metric | Strong Portfolio | Acceptable | Concern |
|---|---|---|---|
| Weighted Avg DSCR | 1.25x+ | 1.15-1.25x | Below 1.15x |
| % Below 1.10x | Under 15% | 15-25% | Above 25% |
| CDR (annualized) | Under 2.5% | 2.5-4.0% | Above 4.0% |
| 60+ DPD | Under 4% | 4-6% | Above 6% |
| CPR | 20-35% | 15-40% | Outliers either direction |
status: draft
Property types
Single-family rentals (SFR)
The core DSCR product. Single-family detached homes rented to individual tenants.
Advantages:
- Most liquid property type for resale
- Simplest to value and underwrite
- Largest tenant pool
- Lowest vacancy risk
Typical terms: 75-80% LTV, 1.15x minimum DSCR, 30-year amortization
2-4 unit properties
Duplexes, triplexes, and quads. Still residential for financing purposes but multiple income streams.
Advantages:
- Diversified income (one vacancy doesn’t eliminate all cash flow)
- Often higher yields than SFR
- Can house-hack (owner occupies one unit)
Challenges:
- More complex management
- Harder to value (fewer comps)
- Tenant turnover correlation (all leases may expire together)
Typical terms: 75% LTV, 1.20x minimum DSCR, 25-30 year amortization
Short-term rentals (STR)
Properties rented on Airbnb, VRBO, or similar platforms. Vacation rentals, corporate housing, furnished units.
Income calculation approaches:
| Approach | Description | Haircut |
|---|---|---|
| AirDNA projection | Third-party STR data | 0% (but conservative projections) |
| 12-month actual | Trailing STR income | 0-10% |
| Market rent fallback | Treat as LTR | N/A |
| Blended | Average of STR and LTR | 20-30% |
Why STR is controversial:
- Income volatility (seasonal, demand-dependent)
- Regulatory risk (cities banning or restricting STR)
- Higher operating expenses (cleaning, furnishing, management)
- Less predictable tenant base
Capital provider treatment: Most DSCR lenders either exclude STR entirely or apply 20-30% haircuts to projected income. Some require 12 months of actual STR income before financing.
status: draft
Interest rate and payment structure
Fixed vs ARM
| Rate Type | Initial Rate | Reset Risk | Typical DSCR Floor |
|---|---|---|---|
| 30-year fixed | Higher | None | 1.10-1.15x |
| 5/6 ARM | Lower | Significant at year 5 | 1.15-1.20x |
| 7/6 ARM | Moderate | Moderate at year 7 | 1.15x |
| 10/6 ARM | Near fixed | Limited | 1.10-1.15x |
ARM risk: DSCR calculated at origination may not hold at reset. A 1.15x DSCR at 6.5% rate becomes 1.00x at 8.0%. Capital providers model reset scenarios.
Interest-only periods
| I/O Period | DSCR Benefit | Payment Shock | Capital Provider View |
|---|---|---|---|
| None | Base case | None | Preferred |
| 5-year I/O | +0.15-0.20x DSCR | Significant | Acceptable with 1.20x+ amortizing DSCR |
| 10-year I/O | +0.20-0.25x DSCR | Moderate | Higher scrutiny |
I/O on DSCR loans: Common because it improves cash flow metrics. But capital providers should underwrite to the fully amortizing payment, not the I/O payment.
Prepayment penalties
Standard DSCR prepayment structures:
| Structure | Year 1 | Year 2 | Year 3 | Year 4 | Year 5 |
|---|---|---|---|---|---|
| 5-4-3-2-1 | 5% | 4% | 3% | 2% | 1% |
| 3-2-1 | 3% | 2% | 1% | Open | Open |
| 5-year hard | 5% | 5% | 5% | 5% | 5% |
Why prepay matters: DSCR borrowers are often investors who may refinance or sell quickly. Prepayment penalties affect yield modeling and CPR assumptions.
status: draft
Borrower entity structure
LLC borrowers
Most DSCR loans are made to LLCs, not individuals. This is both a feature and a risk.
Advantages:
- Liability protection for investor
- Tax flexibility (pass-through)
- Easier title transfer within portfolio
Risks for lenders:
- No personal liability (unless guaranteed)
- Entity may have no assets beyond the property
- Harder to pursue deficiency judgment
Personal guarantees
| Guarantee Type | Recourse | Common For |
|---|---|---|
| Full recourse | Yes, personal liability | Bank DSCR, prime borrowers |
| Carve-out only | Limited to bad acts | Standard DSCR programs |
| Non-recourse | None | Institutional borrowers, larger loans |
Standard carve-outs (triggering full recourse):
- Fraud or intentional misrepresentation
- Waste or failure to maintain property
- Unpermitted transfers
- Environmental liability
- Bankruptcy filing
status: draft
Red flags
Property-level
- DSCR below 1.10x: Thin margin for any disruption
- STR income without haircut: Overstating sustainable cash flow
- Market rent above 110% of actual: Appraiser optimism, not reality
- Declining rent trends: Market softening, oversupply
- High HOA fees: Can compress DSCR significantly
Portfolio-level
- Weighted average DSCR below 1.15x: Portfolio stress risk
- More than 25% below 1.10x DSCR: Concentration in thin-margin properties
- Single market above 30%: Geographic concentration
- ARM concentration above 50%: Rate reset risk
- STR concentration above 20%: Income volatility and regulatory risk
Borrower-level
- New investor (first property): Higher default rates for inexperienced operators
- Rapid portfolio growth: Overextension risk
- Multiple LLC structures: May be hiding cross-defaults
- Declining personal credit: Stress bleeding from personal to investment
status: draft
Pricing and execution
Warehouse economics
| Segment | Advance Rate | Pricing | Dwell Time |
|---|---|---|---|
| DSCR 1.20x+ | 85-90% | SOFR + 175-225 bps | 90-120 days |
| DSCR 1.10-1.19x | 80-85% | SOFR + 200-275 bps | 90-120 days |
| DSCR 1.00-1.09x | 75-80% | SOFR + 250-350 bps | 90-120 days |
| STR (with haircut) | 75-85% | SOFR + 225-300 bps | 120-180 days |
Illustrative pricing. See pricing disclaimer.
Securitization
DSCR loans commonly securitize alongside other non-QM products. Enhancement levels run lower than bank statement or foreign national due to property cash flow support.
| Rating | DSCR Enhancement | Non-QM (Prime) Enhancement |
|---|---|---|
| AAA | 12-16% | 14-18% |
| AA | 9-12% | 10-14% |
| A | 6-9% | 7-10% |
status: draft
Related topics
- Non-QM lending — owner-occupied alternative documentation programs
- Single-family rental (SFR) — institutional SFR portfolio financing (5+ properties)
- Bridge / fix-and-flip — short-term investor financing with planned exit
- Deal structures — warehouse and term securitization economics