The Quick Read: When the AirDNA projection falls, the lender usually re-sizes the loan instead of declining the file, because qualifying income falls and the loan amount has to shrink to keep coverage at the program floor. Qualifying income is the projection after the lender’s own adjustment. The maximum loan is the amount that income can still carry, and the supportable price comes from that loan plus your cash.
- A lower projection usually means less leverage and more cash to close, not an automatic denial.
- The raw AirDNA headline is not the qualifying income. The lender adjusts it first, and many programs use the lower of two income sources.
- Coverage drops in proportion to income. A 10% income drop pushes the ratio down about 10% unless the payment falls too.
- Run your offer at the lender-adjusted income before you write it, not at the headline.
- Short-term rental rules vary by city, county, HOA, and property type. Confirm local rules before relying on projected rental income.
An investor under contract on a short-term rental pulls a fresh report and sees a lower revenue number than the one that justified the offer. That number feeds the loan, and the loan feeds the price you can pay. This piece walks through what happens next, in the order a lender works it. For the full program picture, see Lendmire’s complete DSCR loans guide.
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Rate source: Freddie Mac 30-yr average via FRED® — Federal Reserve Bank of St. Louis · effective Oct 15, 2026
Prefilled with starting assumptions — enter your own rent or nightly figures, taxes, insurance, and HOA for a more accurate picture.
Program parameters update from Lendmire’s centralized guideline source. Taxes and insurance are editable estimates.
As of Oct 15, 2026 · General Freddie Mac market benchmark, not a Lendmire loan offer. Rent, nightly rate, occupancy, taxes, and insurance are editable estimates. Short-term rental figures are estimates only and vary significantly by season, property type, management approach, and local short-term-rental rules — confirm local regulations before relying on them. Qualifying income for short-term rentals varies by program — some use appraisal market rent, others use documented STR history or projections — and is confirmed in underwriting. Not a Loan Estimate, approval, or commitment to lend. Program availability and eligibility are subject to lender guidelines, credit approval, property review, and underwriting.
Key Terms Defined
Qualifying income is the rental income a lender counts toward the ratio, after its own adjustments to the projection or history.
PITIA is the full monthly housing obligation: principal, interest, taxes, insurance, and association dues if any.
Coverage ratio is qualifying income divided by PITIA. At 1.00x, income equals the full obligation.
Lower-of sizing means the lender uses the smaller of two income figures, such as a market-data projection and an appraiser’s figure.
Comp Set Strength is AirDNA’s Low, Medium, or High rating of how well a projection’s comparable listings match the subject and each other.
What Actually Changed? Verify the Drop First
A projection that drops is not always a market change. Check the inputs before you reprice anything.
Per AirDNA’s Rentalizer methodology, the tool finds nearby comparable listings and weights the closer matches more heavily. It then layers in seasonality, demand, and revenue growth. Each report carries a Comp Set Strength rating based on comp count, how closely they match, and how tightly their revenue clusters. So a drop can come from a thinner comp set, a bedroom or guest-count mismatch, a changed filter, or a seasonal refresh.
Work through these in order:
1. Re-pull the report with the same address and the same property inputs.
2. Compare bedroom count, bathroom count, and guest capacity against what the listing actually offers.
3. Look at the comp set. Remove outliers that don’t match, and keep comps that do.
4. Check the Comp Set Strength rating. Per AirDNA, customizing the comp set can raise it.
5. Ask whether the drop is a real market signal or a quirk of the pull.
Treat the tool as an estimate. A third-party review from an STR-tool vendor says independent tests put projections 15–30% off actual results, mostly on the high side. A second vendor review calls it least reliable in thin markets. Both are vendors, so read them as commentary. They do point the same way: a lower number is sometimes the more honest one.
How Does the Lender Turn the New Projection Into Qualifying Income?
The lender does not take the headline at face value. It applies its own factor to the projection, then divides the annual result by 12 to get monthly qualifying income.
Across the wholesale network, most programs haircut the projection for vacancy, platform fees, and seasonality. The size of that adjustment varies by lender, so the same property can size differently depending on where the file lands. This is the main reason two quotes on one house diverge. Lendmire arranges these files through select lenders in its network, and the factor is a lender-level choice, not a universal formula.
Then comes the cross-check. When an appraiser’s figure and a market-data projection both exist, many programs use the lower of the two. A strong projection does not win if the appraisal number is lower.
The appraisal side has limits worth knowing. Per Fannie Mae’s June appraiser update, Form 1007 documents monthly market rent on a one-unit investment property. Fannie Mae’s Selling Guide lists that form for one-unit properties and the 2–4 unit counterpart for small multifamily. These are appraisal form names, not DSCR rules. McKissock Learning explains the form captures long-term monthly rent from comparables, that the lender decides how income is counted, and that nightly rate times 30 is not a valid way to get market rent.
Documents that usually sit in the file:
- The projection report, typically dated within a window of closing.
- The appraisal with the rent schedule or operating income form.
- Platform or property-manager statements on an operating rental.
- HOA, tax, and insurance figures for the payment side.
How Is the Maximum Loan Sized?
The maximum loan is the smaller of two limits: what the income can carry at the coverage floor, and what the leverage cap allows. On short-term rental files, income often binds first.
Test one is coverage. Qualifying income divided by PITIA must clear the program minimum. A 1.00x floor is where select programs start. Stronger ratios open better pricing and leverage. A separate select-lender path takes coverage below 1.00x, with leverage and terms adjusted.
Test two is leverage. For short-term rentals, purchase leverage tops out at 75% LTV. Refinance runs around 70%, and cash-out is 70%. Expect a 640+ score and about 12 months of hosting history on refinance files. Standard long-term rentals are different: purchases typically land at 75%–80% LTV, and cash-out tops out around 75%. All of this is subject to lender guidelines and each file is underwritten individually.
Here is the mechanical part. Income is fixed once the lender sets it. PITIA moves with the loan amount. A smaller loan means a smaller payment, which lifts coverage. So the lender solves backward: what loan size makes the ratio clear the floor? That is the number that binds.
Picture a purchase where the original projection supported 75% LTV at a coverage ratio comfortably above 1.00x. The projection then falls 10%. Coverage falls about 10% with it. If that pushes the ratio under the floor, the loan must shrink about 10% to restore the ratio. The buyer covers the difference in cash, which means the effective LTV drops below 75%. Final terms depend on the lender’s guidelines, the property type, and the borrower’s complete credit picture.
Working Backward to an Offer Price
Offer sizing is the same math run in reverse. Start from the income and end at a price.
1. Take the lender-adjusted monthly income, not the raw projection.
2. Divide by the coverage ratio you need to hit. That gives the maximum PITIA the income supports.
3. Translate that PITIA ceiling into a maximum loan amount, using the payment structure of the program.
4. Add the cash you are willing to bring. Loan plus cash equals the price you can support.
5. Compare that figure to the seller’s price. The gap is your negotiating position or your walk-away signal. Each figure is subject to lender guidelines and a complete review of property type, leverage, and credit.
The calculator on this site can handle the dollar conversions as an illustrative estimate. The logic above is what matters: income sets the loan, the loan plus your cash sets the price.
One note on structure. The spine is the 30-year fixed. Extended terms such as 40-year and interest-only periods are available through select lenders in the network, and ARM structures exist for investors who want them. Those change the payment the lender tests, so they change the maximum loan. They are not free fixes. Rent covering the payment does not equal positive cash flow, because repairs, vacancy, management, utilities, and capex sit outside the ratio.
DSCR vs. conventional financing
There are two common ways to finance an investment property, and they qualify you differently — here’s how investors weigh them.
Why investors choose it
- Qualifies on the property’s rental income — no personal tax returns, W-2s, or pay stubs needed to document income.
- No personal debt-to-income ceiling to clear, so existing mortgages and obligations don’t cap your borrowing the same way.
- Can be closed in an LLC, keeping the property inside a business entity.
- Built for scaling — not held to the limit on number of financed properties that conventional financing applies.
- Underwriting centers on the deal: generally qualifies when the rent covers the payment, a 1.00x coverage ratio being a common baseline (confirmed in underwriting).
- Designed specifically for investment property, including long-term and, where the program allows, short-term rentals.
Where it’s strong
- Often the lowest ongoing financing cost for a buyer who fully qualifies on personal income — a fit for a first property or a cost-first purchase.
Trade-offs for investors
- Requires full personal income documentation and must fit within a debt-to-income limit — salary, existing debts, and other mortgages all count.
- Typically held in your personal name rather than a business entity.
- Caps how many financed properties you can carry, which can become a ceiling as a portfolio grows.
- Evaluates you as a borrower as much as the property, which usually means more paperwork.
How investors usually choose: a first or single property often optimizes for the lowest financing cost; portfolio builders often optimize for leverage, vesting in an LLC, and scaling past conventional caps. The right answer depends on your goals, the property, and current guidelines — both paths run through select lenders in Lendmire’s wholesale network, with eligibility and terms confirmed in underwriting.
Before and After: A Ratio Walk-Through
These inputs are modeled assumptions, not market facts, and they use ratios only.
| Step | Before the drop | After a 10% drop |
|---|---|---|
| Qualifying income | Index = 100 | Index = 90 |
| Payment at same loan | Index = 100 | Index = 100 |
| Coverage ratio | About 1.20x | About 1.08x |
| Floor tested | 1.00x | 1.00x |
| Result | Clears with room | Clears, thin cushion |
In this case the file still clears the 1.00x floor, but the cushion is gone. Stronger pricing tiers generally start at higher coverage, so the buyer may land in a lower tier even without a smaller loan. If the floor were 1.10x for that program, the same file would need a smaller loan.
Sensitivity: How Much Does a Drop Cost?
| Projection change | Coverage effect | Loan effect to hold ratio | Cash to close |
|---|---|---|---|
| Down 5% | Falls about 5% | Shrinks about 5% | Rises modestly |
| Down 10% | Falls about 10% | Shrinks about 10% | Rises noticeably |
| Down 20% | Falls about 20% | Shrinks about 20% | Rises sharply |
The effect is proportional. That matters because the loan is only a share of the price. A 10% loan cut can mean a larger swing in the cash you bring, since your equity covers the whole difference. A larger down payment lowers the payment and can lift coverage. A lender’s worked STR example shows a bigger down payment moving a ratio from about 1.05 to about 1.21. That is one lender’s illustration, so treat it as direction, not a rule. More equity never erases the leverage cap, credit floor, reserve rules, or property eligibility. The strongest files clear both tests: enough equity and enough rental coverage.
When Income Sources Disagree
Three figures can be on the table: the projection, an appraiser’s STR analysis, and your own pro forma. The lender decides which one counts, and a lower-of convention is common.
Your pro forma does not carry the file by itself. A property-manager statement or a documented trailing history carries more weight. On a refinance, that history is the main path: about 12 months of platform or property-manager statements stand in for a projection. A purchase has no history, so it leans on the projection or appraiser analysis.
Where the lender falls back to long-term market rent from the 1007 form, the number is usually lower than a projection on a true short-term rental. That form was not built to carry nightly income, as McKissock notes above.
Where the General Rule Breaks
Several cases pull away from the pattern above.
- Thin markets. Projection quality ties to comp count and consistency. Few comps mean a weaker report and a bigger lender haircut.
- Market-level gates. Some lenders require a minimum market score from the data vendor. That is a separate test from the revenue figure, and a file can fail it with strong revenue.
- Seasonality. Lenders look at annualized income. A peak-season snapshot will not carry a file.
- Purchase versus refinance. A refinance can use history. A purchase cannot.
- Ineligible property types. Manufactured homes, log homes, and barndominiums are not offered in the network’s DSCR programs, no matter what the income looks like.
- Sub-1.00 and no-ratio paths. Coverage below 1.00x is available through select lenders in the network, with leverage and terms adjusted. No-ratio qualification is available only through select lenders, generally for borrowers who already own a primary residence.
Reserves also stay in play. They vary by lender, leverage, loan size, and transaction type, commonly around 6 months of PITIA, and loans above $1,500,000 typically step up to about 9 months. A smaller loan does not remove that step, but it can avoid it. For more on how that works after funding, see Lendmire’s piece How a DSCR Cash-Out Lender Sizes the Reserve Requirement After Closing.
Your Options When the Number Drops
| Lever | Effect | Tradeoff |
|---|---|---|
| Bring more cash | Smaller loan, higher coverage | Less cash for reserves and repairs |
| Renegotiate price | Same math, lower purchase cost | Seller may refuse |
| Contest the comp set | May raise the projection | Needs matching comps as evidence |
| Longer term or interest-only | Lowers the tested payment | Select lenders only, other costs |
| Use documented history | Replaces the projection | Refinance only, needs 12 months |
| Accept a lower tier | Keeps the loan size | Terms adjust |
| Walk away | Caps your loss | Lose the deal |
An experience note from the desk: the file that gets stuck is rarely the one with a low number. It is the one where the buyer priced the offer on the headline and learned the haircut at the appraisal. Run the adjusted income on day one and the re-size is a planned step, not a surprise.
The decision rule is simple. If the adjusted numbers still clear the floor at a leverage and cash level you are comfortable with, proceed. If they clear only with cash you cannot spare, renegotiate. If neither works, walk. For a view of what happens if coverage slips after funding, see Lendmire’s article What Happens If Your DSCR Drops After Closing?.
Contract Timing and Explaining a Revised Offer
Financing and appraisal contingency dates decide how much room you have. If a re-pull happens after your contingency expires, your leverage in the negotiation falls. This is general education, not legal advice, so have your agent or attorney read your contract.
Agents explaining a revised offer to a seller can keep it short: the buyer’s lender adjusts rental income for vacancy and fees, the current projection supports a smaller loan, and the revised price keeps the deal reviewable within program limits. Offer the seller the arithmetic, not an argument. Tax treatment can depend on how the funds are used and how the property is held; investors should keep clear records and speak with a qualified tax professional before relying on any deduction.
Frequently Asked Questions
Will the lender accept the original projection?
Usually not at face value. Programs typically adjust the projection for vacancy, fees, and seasonality, and many use the lower of the projection and the appraiser’s figure. The original number is an input to the file, not the qualifying income.
Can I re-run the report?
Yes, and you should before reacting. Check property inputs, bedroom and guest counts, and the comp set. Customizing comps can raise the Comp Set Strength rating. The lender may still run its own pull or require a specific report.
Does a lower projection always shrink my loan?
Not always. If coverage still clears the program floor after the drop, the loan can stay the same. The cushion shrinks, though, and a lower coverage ratio can move you to a lower pricing tier. When coverage falls under the floor, the loan is re-sized or the structure changes.
Can more down payment save the deal?
Often, within limits. A larger down payment shrinks the loan and the payment, which lifts coverage. It does not change leverage caps, credit floors, reserve rules, or property eligibility. Qualification stays subject to lender guidelines.
Does this apply to refinances?
Differently. A refinance can use about 12 months of documented platform or property-manager history instead of a projection, so a drop in an AirDNA estimate matters less. Short-term rental refinance runs around 70% LTV, and cash-out is 70%. Leverage, reserves, and pricing vary by lender and program; the final terms follow the full file review.
If you are buying or refinancing a rental property and want to see how the numbers work, Lendmire can help you compare DSCR loan options based on the property income, credit profile, leverage, and investor goals. Programs described here reflect select wholesale-network guidelines, are subject to lender guidelines, and are not a commitment to lend.
About Lendmire
As a DSCR and non-QM mortgage broker, Lendmire — NMLS# 2371349 — connects investors with wholesale lending channels across 41 markets, including Washington, D.C. The property’s rental income, not the borrower’s tax returns, is central to lender review, which works for self-employed operators and portfolios beyond four financed properties. Scotsman Guide named Lendmire a Top Mortgage Workplace in both 2025 and 2026.
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References
1. AirDNA Airbnb Calculator methodology
2. VaultSTR: AirDNA Rentalizer accuracy
4. Fannie Mae Appraiser Update (June 2024)
5. Fannie Mae Selling Guide B4-1.2-01
6. McKissock Learning: Form 1007 and short-term rental appraisals
7. Lower
This article is part of Lendmire’s DSCR loan program — full qualification details, guidelines, and scenarios live on the program page.
Related reading: How to Calculate DSCR for a Rental Property in Five Minutes · How Much Cash-Out a DSCR Lender Releases on a Paid-Off Rental · How to Scale From 5 to 20 Rentals Using DSCR Loans
Brandon Miller
Founder & CEO, Mortgage Loan Originator, Lendmire LLC
- Mortgage Loan Originator · NMLS# 1129696 · Verify on NMLS Consumer Access
- North Carolina Real Estate Broker · License# 343312 · Verify on NCREC
- North Carolina Insurance Producer · License# 19053198 · Property, Casualty, Life, Health · Verify on NAIC SBS
- Lendmire LLC · Firm NMLS# 2371349 · Verify firm licensure
Legal disclosures. Lendmire (NMLS# 2371349) is a state-licensed mortgage brokerage that arranges financing through wholesale lender relationships. Lendmire is not a direct lender, depository institution, or registered financial advisor. The discussion above is general informational content about real estate financing — it is not financial, legal, or tax advice, and readers should consult licensed professionals for guidance on their individual circumstances. Loan inquiries are subject to lender underwriting; this article does not represent a commitment to lend. Loan terms, rates, and qualification standards vary by borrower, property, and state, and are subject to change at any time. Equal Housing Opportunity. NMLS Consumer Access: nmlsconsumeraccess.org.