The Quick Read: A seasonal cabin gets underwritten on one averaged, documented full-year income figure, not on its best months, and how you lay that figure out decides how credible it looks to a reviewer. Lenders divide that qualifying income by the full monthly obligation (principal, interest, taxes, insurance, and any HOA dues) to get the coverage ratio.
- Present twelve months, including the slow ones. Peak months get averaged in, never used alone.
- Platform payouts, manager statements, and bank deposits should reconcile to each other.
- Gross dashboard revenue is not qualifying income. Expect a haircut for higher STR operating costs.
- Short-term rental files typically run up to 75% LTV on a purchase and up to 70% on a cash-out or refinance, with a 640 credit score minimum, subject to lender guidelines.
- Clearing the ratio is not the same as positive cash flow.
A cabin that books solid all summer and holiday weekends, then goes quiet, looks great in a screenshot. Underwriters don’t read screenshots. They read a year. This piece walks through how that year gets read, how to build the package, and where the usual approach breaks.
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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 nightly rate, occupancy, taxes, and insurance for a more accurate picture.
Short-term rental income is documented with a 12-month history or a market data report. Program parameters update from Lendmire’s centralized guideline source.
As of Oct 15, 2026 · General Freddie Mac market benchmark, not a Lendmire loan offer. Nightly rate, occupancy, taxes, and insurance are editable estimates. 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
DSCR (debt service coverage ratio): The property’s qualifying income divided by its full monthly housing obligation.
PITIA: Principal, interest, taxes, insurance, and any HOA dues, which together form the denominator.
Trailing twelve months (TTM): The most recent twelve months of documented rental income, shown month by month.
Gross vs. qualifying income: Gross is what the platform reports; qualifying is what a lender accepts after any expense factor.
Haircut (expense factor): A percentage cut applied to STR gross income before the ratio is run.
Seasoning: A lender’s required ownership period before a cash-out, which is policy and not law.
Peak-to-trough: The gap between your best and weakest months, which is the real measure of seasonal risk.
Why Does a Seasonal Cabin Get Treated Differently?
A cabin is a special case because the lender’s question is which income number is acceptable, not what the property earned at its best. DSCR loans are designed for non-owner-occupied investment properties. Because they are business-purpose investor loans, they are reviewed differently from a standard owner-occupied mortgage, and the review centers on the property.
On a long-term rental, the lease is the number. On a cabin, income swings with weather, road access, ski season, and school breaks. Two cabins with the same annual total can carry very different risk if one earns most of it in eight weeks. Reviewers know this. Across the wholesale network of DSCR lenders Lendmire works with, the common reaction to seasonality is to average it away and then look closely at how steady the underlying year was.
Seasonal cabins also tend to sit in thin markets with few comparable listings. That matters for projections, which come up below.
What Counts as Income: Three Evidence Types
Lenders generally rely on one of three kinds of evidence, and which one applies depends on whether the cabin already operates as an STR.
| Evidence | When it’s used | Seasonal-cabin weakness |
|---|---|---|
| Operating history (TTM) | Existing STR | Exposes weak off-season |
| Manager statements | Managed cabins | Must tie to deposits |
| Market projection | New purchase | Thin comps, optimistic bias |
Operating history is the strongest. A month-by-month statement from Airbnb and Vrbo exports, plus bank deposits, shows what actually happened. For a new purchase with no host history, the lender uses a projection report from an STR data vendor or an appraiser’s rent analysis. Many programs weigh projections more cautiously than actuals.
Projections deserve caution. The right habit is to haircut your own projection before the lender does.
How Underwriting Treats the Number, Step by Step
1. Pick the income path. Existing STR means TTM history. New purchase means a projection or rent analysis.
2. Gather the records. Platform payout and earnings exports, manager statements, and bank deposits.
3. Average across twelve months. Two big summer months don’t support a full-year assumption. The reviewer wants a year.
4. Apply the expense factor. STR costs run higher than long-term rental costs, so lenders commonly take a cut off gross income, often cited in the 20 to 25 percent range, before running the ratio.
5. Divide by PITIA. The result is the coverage number.
6. Compare to the program floor and leverage tier. Stronger coverage opens better pricing and leverage.
The denominator is never discounted. Only the income side takes the haircut. Appraisers may also support the file: Form 1007 is the single-family rent schedule, and Form 1025 covers small residential income properties.
The Coverage Math: A Cabin Across a Full Year
Run the numbers on a modeled cabin (illustrative only, not market data). On a summer snapshot, the ratio reads strong, about 1.9x. Spread across a full trailing year, it settles near 1.15x. In a weak year, with a soft winter and a few cancellations, it can slip to roughly 0.95x. Lendmire walks through a similar pattern in its piece How to Cash Out a Short-Term Rental in a Seasonal Market.
Same cabin. Three very different answers. The only variable is which window you present.
For STR files, 1.00 is the floor on both purchases and refinances in the programs Lendmire places files with, and it is a floor for specific programs, not a universal standard. Stronger coverage generally earns better terms. Below 1.00, a separate path is available through select lenders in the network, with leverage and terms adjusted. That path suits a cabin with a real appreciation story, but it is a structural choice and not a workaround for a weak market.
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.
A Weak Winter Inside a Passing Year
Here is the case competitors skip. An annual ratio can clear while individual winter months fall short of the payment. The underwriter sees that too, because the month-by-month schedule shows it.
Don’t hide it. Present it:
- Show every month, with gross receipts and source for each.
- Add one short note explaining closure months, such as road access, winterization, or owner-use blocks.
- Show that reserves cover the soft months. Reserves vary by lender, leverage, and loan size, and commonly run around six months of PITIA, so confirm the figure for your file.
A reviewer who finds the weak months on their own starts doubting the rest. A reviewer who sees them disclosed with context mostly moves on.
Building the Package
Build one schedule with twelve rows: month, gross receipts, platform or manager source, and a reconciliation column tying receipts to bank deposits. Then check these items:
- Payouts, manager statements, and deposits should agree. If a manager nets fees before paying you, show the gross and the fee.
- Separate revenue from any other property that shares your account or bank deposits.
- Name the subject cabin on every document. Avoid screenshots standing in for exports.
- Flag cancellations and blocked dates, and say why they were blocked.
- Include proof the cabin may legally operate as a short-term rental.
Also expect about 12 months of host experience to be the norm on STR files in the network, with a 640 credit score minimum. Every figure here varies by lender and program — guidelines, property type, leverage, and credit profile all apply.
Edge Cases Where the Rule Bends
| Situation | What usually counts | Prepare |
|---|---|---|
| New purchase, no history | Projection or rent analysis | Haircut your own figure |
| Under a full year of history | Partial TTM plus projection | Explain the gap |
| Recent long-term-to-STR conversion | Months of STR actuals, lender-dependent | Show lease end and first booking |
| Manager changed mid-year | Combined statements | Tie both to deposits |
| Weak or disrupted year | Averaged actuals | Context note and reserves |
Seasoning is lender policy, not law. Purchases typically carry none, while cash-outs generally expect around six months, as covered in Lendmire’s note on DSCR cash-out seasoning requirements. If actual history is lopsided, a conservative fallback some programs consider is long-term market rent from a Form 1007. A cabin can fail on long-term rent and pass on documented STR income. Run both before you buy.
Note too that DSCR is not a cash-flow measure. Clearing 1.00 says rent covers PITIA, nothing more. Repairs, vacancy, management, utilities, and capex sit outside the calculation, and a cabin has plenty of all five.
Before You Apply: A Self-Check
| Fragile file | Solid file |
|---|---|
| One or two months carry the year | Revenue spread over many months |
| Gross dashboard figures | Net of an expense factor |
| Screenshots | Exports tied to deposits |
| Weak months unexplained | Closures and blocks noted |
| Ratio clears only on peak | Ratio clears on full TTM |
Common mistakes follow the left column: presenting the peak, mixing in other properties’ revenue, trusting a raw projection, and ignoring the full payment. For the bigger picture, see the complete DSCR loans guide.
What the Decision Looks Like in Practice
A larger down payment lowers the monthly obligation and can lift the ratio, but it never erases leverage caps, credit floors, reserve rules, or property eligibility. The strongest files clear both tests: enough equity and enough rental coverage. Loans run up to $3,000,000 on standard programs. Cabins built as manufactured homes, log homes, or barndominiums are not offered in these programs, which matters for many rural cabin buyers, so check construction type first.
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.
If you are buying or refinancing a rental property and want to see how the numbers work, Lendmire, a broker arranging DSCR financing through select lenders across 41 markets, including Washington, D.C., can help you compare DSCR loan options based on the property income, credit profile, leverage, and investor goals.
Frequently Asked Questions
Can I use projected income if the cabin has no Airbnb history?
Often, yes, through a projection report or an appraiser’s rent analysis, depending on the program. Expect more scrutiny than actuals get, and cap your own assumptions below the report’s optimistic figure.
How many months of income do I need to show?
A full twelve is the norm on existing STR files, and about 12 months of host experience is generally expected. A partial year may be paired with a projection, subject to lender guidelines.
Does a slow off-season disqualify me?
Not by itself. The averaged year is what gets tested. A weak winter hurts only if the average falls below the program floor, or if it’s left unexplained.
Is gross Airbnb revenue what the lender uses?
No. Lenders typically apply an expense factor before running coverage, so underwrite on the net figure, not the dashboard.
What if I just converted the cabin from a long-term rental?
Show the lease end date and the STR months so far. Some programs blend that history with a projection or fall back to market rent, depending on lender guidelines.
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About Lendmire
Lendmire (NMLS# 2371349) is a mortgage brokerage focused on DSCR investor financing, helping arrange programs through wholesale and investor-lending channels in 41 markets, including Washington, D.C. DSCR loans are evaluated by the lender on property cash flow rather than personal income, subject to lender guidelines, supporting LLC closings and accommodating investors with four or more financed properties. Scotsman Guide Top Mortgage Workplace in both 2025 and 2026.
This article is part of Lendmire’s short-term rental loan program — full qualification details, guidelines, and scenarios live on the program page.
Related reading: Can You Get a DSCR Loan on Retirement Income Alone? · How to Get a Mortgage on Commission Income · How to Qualify for a DSCR Loan in Mississippi
Brandon Miller
Founder & CEO, Mortgage Loan Originator, Lendmire LLC
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Disclosure information. Lendmire is a state-licensed mortgage brokerage under NMLS# 2371349. Lendmire is not a depository institution, direct lender, or financial advisor — all loans referenced are placed through wholesale lender partners and are subject to each lender's underwriting standards. This article is provided for general informational purposes and is not a commitment to lend, nor does it constitute financial, legal, or tax advice. Loan programs, terms, rates, and qualification standards change without notice and depend on borrower profile, property type, and the state in which the subject property is located. Equal Housing Opportunity provider. NMLS Consumer Access: nmlsconsumeraccess.org.