Understanding how to calculate DSCR before you apply for a loan puts you in control. Lenders calculate it themselves during underwriting — but knowing the math helps you screen properties, anticipate approval, and negotiate better terms. Here’s exactly how it works for California rental properties.
The DSCR Formula
DSCR = Gross Monthly Rent ÷ Monthly PITIA
Where PITIA = Principal + Interest + Taxes + Insurance + HOA (if applicable)
Step-by-Step DSCR Calculation
Step 1 — Establish the Monthly Rent
The lender uses the appraiser’s market rent estimate (from Form 1007 or 1025), not what you hope to charge. The appraiser surveys comparable rentals in the market and determines a supportable market rent. If you already have a lease in place, the lender will use the lesser of the lease rent or market rent.
Step 2 — Calculate Monthly PITIA
Your lender calculates this based on loan amount, rate, term, estimated taxes, insurance, and HOA. Example for a $600,000 loan at 7.50% on a 30-year term in Sacramento County:
| Component | Monthly Amount |
|---|---|
| Principal & Interest | $4,196 |
| Property Taxes (1.2% annual) | $800 |
| Homeowners Insurance | $150 |
| HOA | $0 |
| Total PITIA | $5,146 |
Step 3 — Divide and Interpret
If the appraiser establishes a market rent of $3,200/month: DSCR = $3,200 ÷ $5,146 = 0.62 — this doesn’t qualify at standard programs. You’d need either a larger down payment, a lower rate, or a no-ratio DSCR program.
If the market rent is $5,500/month: DSCR = $5,500 ÷ $5,146 = 1.07 — this qualifies at most DSCR programs.
DSCR by California Market (2026 Examples)
| Market | Typical SFR Price | Market Rent | 25% Down / 7.50% | Est. DSCR |
|---|---|---|---|---|
| Sacramento | $480,000 | $2,400 | $3,870 | 0.62 ⚠️ |
| Fresno | $340,000 | $1,950 | $2,740 | 0.71 ⚠️ |
| Bakersfield | $290,000 | $1,800 | $2,337 | 0.77 ✅ (no-ratio) |
| Riverside | $520,000 | $2,800 | $4,193 | 0.67 ⚠️ |
| Stockton | $380,000 | $2,100 | $3,065 | 0.69 ⚠️ |
| Oakland (3bd) | $700,000 | $3,800 | $5,645 | 0.67 ⚠️ |
| Palm Springs STR | $650,000 | $5,800 (AirDNA) | $5,243 | 1.11 ✅ |
| Lake Tahoe STR | $950,000 | $8,500 (AirDNA) | $7,660 | 1.11 ✅ |
This table illustrates why short-term rental DSCR often works where long-term DSCR doesn’t — STR income is typically 2–4× higher than long-term rent in vacation markets.
How to Improve Your DSCR Before Applying
- Put more down (reduces loan amount → lower PITIA)
- Use a 40-year IO loan to reduce monthly payment
- Target STR markets where AirDNA income is 2–3× long-term rent
- Look for multifamily (2–4 units) where combined rent produces stronger DSCR
- Use a seller-paid buydown to reduce your rate
📞 Call (800) 239-1103 for a free DSCR analysis on any California property. NMLS #323700 | Michael DiVita NMLS #241655.
About DiVita Home Finance
DiVita Home Finance is a small, family-owned mortgage company based in Marin County, California. When you call, you speak directly with Michael DiVita — the owner — not a call center, not an out-of-state rep, not someone reading from a script. We’re here for a low-key, no-obligation conversation about your situation.
We take your privacy seriously. We will never sell your information to third-party lenders or lead generation companies — unlike many of the large mortgage platforms. Your inquiry stays with us, period.
📞 Call: (800) 239-1103 | 💬 Text Michael directly: (310) 849-9124
