Make an informed financing decision
How Short-Term Rental Income Is Calculated
A short-term rental’s best month is not its qualifying monthly income. The DSCR review averages a full year, accounts for extraordinary operating expenses and applies the documentation rules for the selected program.
- Income period
- 12-month average
- Expense adjustment
- At least 20%
- AirDNA use
- Eligible purchases only
Start with a 12-month average
Use an eligible income source that captures seasonality. The standard DSCR guide accepts specified appraisal analysis, a recent 12-month third-party rental or management history, or 12 months of bank statements supported by property rental records.
When multiple qualifying sources are used, the lowest monthly income source controls. Vendor and management fees must be reflected according to the documentation requirements.
Apply the extraordinary expense factor
Gross rent is reduced by at least 20% for costs associated with short-term operation. If the actual applicable expenses exceed 20%, use the higher factor. Do not add back management fees already required to be excluded from qualifying income.
Illustration: $60,000 in eligible annual gross rent averages $5,000 monthly. With a 20% expense adjustment, the income used in this simplified example is $4,000. Dividing $4,000 by a $3,200 PITIA payment produces a DSCR of 1.25. This is arithmetic, not an approval.
AirDNA has purchase-specific requirements
An AirDNA Rentalizer / Property Earning Potential Report is permitted for purchase transactions only under the stated criteria. It must cover a 12-month forecast and be dated within 90 days of the note.
The report must include at least three comparable properties and a market or submarket score of 60 or greater. Occupancy is limited to two individuals per bedroom. The required expense adjustment still applies.
Separate program eligibility from cash-flow forecasting
Standard DSCR STR maximums are 80% purchase and 75% refinance before lower matrix or property caps. Foreign National DSCR uses its own stricter STR limits and excludes condo-hotel projects from those STR provisions. The 5–8 unit / mixed-use program does not permit STR income.
An operating forecast should also budget for repairs, reserves, vacancy and local compliance. A lender’s qualifying ratio is only one part of the investment decision.
Questions about how short-term rental income is calculated
Can I qualify using peak-season revenue?
A 12-month average is required to reflect seasonality.
What if actual expenses exceed 20%?
The higher actual applicable expense factor is used rather than the 20% minimum.
Related financing and resources
Financing depends on the property, occupancy, documentation, credit and applicable program guidelines. Final terms and availability require underwriting review. This information is educational and is not a commitment to lend.
