Underwriting
Rent Roll vs. Market Rent for DSCR Loans
How lenders use rent roll and market rent in DSCR calculations — which one matters more, how appraisers determine market rent, and what happens when they conflict.
How lenders use rent roll and market rent in DSCR calculations — which one matters more, how appraisers determine market rent, and what happens when they conflict.
DSCR lenders use the lower of actual rent (rent roll) or market rent (appraiser estimate) when calculating a property's Debt Service Coverage Ratio. Rent roll is what your tenants actually pay — documented through lease agreements and bank deposits. Market rent is what the appraiser estimates the property would rent for on the open market, based on comparable rental properties. When your actual rent exceeds market rent, the lender defaults to the lower market rent figure — and this single decision can turn a 1.25x DSCR into a 1.05x DSCR that fails underwriting. Investors who understand the tension between these two numbers can better predict their DSCR outcome and avoid surprises at the appraisal stage.
The actual rent your tenants pay as documented by signed lease agreements and bank deposit records. For DSCR loans, the rent roll is the starting point — it represents what the property actually generates. Lenders verify rent roll through: signed leases, 2–3 months of bank statements showing rent deposits, and sometimes tenant estoppel letters confirming the lease terms.
The appraiser's professional estimate of what the property would rent for on the open market, based on 3 comparable rental properties. Market rent represents what a new tenant would pay today — not what your current tenant happens to pay. The appraiser adjusts comparables for differences in square footage, condition, bedrooms, and amenities.
The short answer: whichever is lower. DSCR lenders universally use the lower-of rule: they compare your documented rent roll to the appraiser's market rent estimate and use the smaller number in the DSCR numerator. This conservative approach protects the lender against inflated rents that couldn't be replicated if the current tenant left.
For investors, this creates three scenarios:
Your tenant pays $1,800 but the market says $2,000. The lender uses $1,800 (your actual rent). This is the "safe" scenario — market rent provides an upside buffer but the lender uses conservative actuals.
Both numbers are close. The lender uses whichever is marginally lower. This is the ideal scenario — your rent is at market, meaning the DSCR accurately reflects the property's income potential.
Your tenant pays $2,500 but the appraiser says market rent is $2,000. The lender uses $2,000. Your DSCR drops from 1.24x to 0.99x. This is the deal-killer scenario — and the most common surprise for DSCR investors.
Appraisers use the Single Family Comparable Rent Schedule (Form 1007) to determine market rent. They pull 3 comparable rental properties — active leases, not listings — from the subject property's market area. Each comparable is adjusted for differences:
The final market rent is the appraiser's reconciled estimate after adjustments. Investors can provide their own comparable lease data to the appraiser — it isn't guaranteed to be used, but solid data helps.
Javier owns a single-family rental in Austin, TX. His tenant has been in place for 3 years and pays $2,600/month. Javier wants to refinance into a DSCR loan. Property value: $380,000, proposed loan: $304,000 at 7.25%, P&I: $2,074. Taxes: $320/month. Insurance: $110/month. Total PITIA: $2,504.
Using rent roll ($2,600): $2,600 / $2,504 = 1.04x — borderline, below the 1.20x minimum.
The appraisal comes back. The appraiser finds 3 comparable rentals in Javier's neighborhood renting for $1,850, $1,950, and $2,050. After adjustments (Javier's property is slightly larger), the appraiser estimates market rent at $2,000/month.
Using market rent ($2,000): $2,000 / $2,504 = 0.80x — far below any DSCR minimum. Javier's tenant pays well above market, but the lender uses market rent. The refinance fails.
Javier's options: (1) Reduce the loan amount — at $200,000 the P&I drops to $1,365 and the DSCR using market rent becomes 1.03x, still not great. (2) Wait for the appraisal to challenge with better comparable data. (3) Find a program that lends at 1.00x DSCR. (4) Wait until market rents in Austin rise to close the gap.
Current, active leases showing rent, term, and tenant names
2–3 months showing consistent rent deposits matching lease amounts
Form 1007 with market rent estimate and comparable data
Large gaps between rent roll and market rent are flagged
The #1 mistake. Always research market rents before going under contract or applying for a DSCR loan. If your tenant pays above market, the lender will use market rent — and your DSCR will be lower than expected.
Appraisers work with available data. If the best comparables aren't showing up in the MLS or rental databases, proactively provide them. Signed leases from nearby comparable properties are gold.
Month-to-month tenants may be treated differently by some lenders. The lack of a fixed-term lease creates uncertainty — the tenant could leave with 30 days notice. Some lenders discount month-to-month rent or require it to be supported by a longer rental history.
Use the calculator to model both your actual rent and estimated market rent.
Educational Disclaimer: This guide is for educational purposes only and does not constitute financial advice, a loan offer, or a commitment to lend. DSCR loan availability, terms, and requirements vary by lender, property type, and borrower scenario. Consult with a qualified financial professional before making investment decisions.
Matt Dean, NMLS #227603
Senior Loan Officer, NEXA Mortgage