The Quick Read: The lender takes the smaller of two limits on a North Myrtle Beach rental: the amount the property’s rent can support after taxes, insurance, and association dues, and the amount the program’s loan-to-value cap allows against the appraised value or purchase price. Passing the coverage test is only the first gate. Sizing decides how much the property can actually borrow.
- The loan amount is the lower of the income-supported amount and the leverage-capped amount.
- The coverage ratio is rent used for lender review divided by the full monthly obligation: principal, interest, taxes, insurance, and association dues (PITIA).
- Long-term rent and short-term rent produce different qualifying income, so the income method changes the loan size.
- Coastal and condo files usually move on insurance, flood coverage, and association dues more than on rent.
- A higher down payment helps the payment side, but it never overrides credit floors, reserve rules, or property eligibility.
Across the wholesale network Lendmire places files with, the same pattern repeats. Borrowers focus on the coverage ratio and the loan amount comes back smaller than they expected. This piece walks through the sizing sequence so the number is no surprise.
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Rate source: Freddie Mac 30-yr average via FRED® — Federal Reserve Bank of St. Louis · effective Oct 29, 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 29, 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.
What Does “Sizing” Mean Compared With “Qualifying”?
Qualifying asks a yes-or-no question: does the rent cover the payment at the proposed loan? Sizing asks a different one: how large can the loan get before the rent stops covering it, or before leverage runs out?
A DSCR loan qualifies primarily on property-level rental income covering the payment, subject to lender guidelines. The borrower’s personal income is not the driver. That shifts every sizing decision to the property: its income, its carrying costs, and its value.
This product type is designed for non-owner-occupied investment properties. Because these are business-purpose investor loans, they are reviewed differently from a standard owner-occupied mortgage.
For a fuller primer on the product itself, the complete DSCR loans guide covers the basics this article skips.
Key Terms Defined
DSCR (debt service coverage ratio): Rent used for lender review divided by the full monthly obligation on the loan.
PITIA: Principal, interest, taxes, insurance, and association dues, plus flood coverage where the property needs it.
Income-supported loan: The largest loan whose PITIA the rent used for program review can cover at the required ratio.
Leverage-capped loan: The largest loan the program allows as a percentage of the lesser of the purchase price or appraised value.
Binding cap: Whichever of the two loan amounts is smaller. It sets the final loan size.
Step 1: Which Rent Does the Lender Count?
The lender picks an income method before it runs any math. The method depends on how the property is used and what evidence exists.
| Income method | Used when | Main weakness |
|---|---|---|
| Signed lease | Long-term tenant in place | Lease may be below market |
| Appraiser market rent | Vacant or newly bought long-term rental | Opinion of value, not actual cash |
| Documented hosting history | Short-term rental with a track record | Reflects past seasons only |
| Third-party projection | Short-term rental purchase, no history | Vendor data can be thin or inconsistent |
For one- to four-unit properties, the appraiser typically completes a rent schedule on the single-family form or the small-income-property form. DSCR loans are not agency products.
Short-term rentals get tighter treatment. Across the network, short-term rental purchases top out at 75% LTV on an investment property. Short-term rental cash-out refinances top out at 70%. Lenders generally expect a score of 640 or higher and about 12 months of hosting history. The coverage floor is 1.10 on purchases and 1.00 on refinances. Income variability is the reason for the extra caution.
Step 2: Why Data Vendors Disagree (and Why It Matters Here)
Public short-term rental data on North Myrtle Beach does not agree with itself. AirROI shows a median occupancy near 37%. Airbtics shows 61% occupancy and an average daily rate of $259. The gap comes from different datasets and different comparison sets, not from one being right.
This is why the investor’s own pro forma does not set the loan. The lender relies on a report run for the specific property, or on actual statements once they exist. Treat vendor snapshots as a reason to expect variation, not as an average to underwrite against.
Seasonality adds a second wrinkle. Airbtics reports that June and July are the busiest months. A file built on annualized peak-season income overstates the year. Underwriters prefer twelve months of data, so the slow months pull the coverage figure down.
Short-term rental rules can vary by city, county, HOA, and property type, so investors should confirm local rules before relying on projected rental income. The City of North Myrtle Beach publishes its own requirements, and a lender will want evidence that the property can legally operate as the income method assumes.
Step 3: What Goes Into the Payment Side?
The denominator is the whole monthly obligation, not just principal and interest. Principal and interest depend on the loan amount and structure. Taxes, insurance, and association dues are fixed by the property, no matter how much is borrowed.
On a coastal file, that fixed block is where sizing gets squeezed. Condo product carries association dues. Properties in a flood zone add flood coverage on top of the standard policy. An insurance quote that comes in higher than the investor assumed shrinks the room left for principal and interest, and that room is what the loan amount is built from.
Here is the practical rule. Get real insurance and association figures before running any sizing, because the fixed block moves the ratio more than most investors expect. Rent estimates move it less than they think.
HOA rental restrictions also matter. A condo or planned-development rule can limit how a unit is rented, and that can override an income assumption entirely. Collect the association’s rental rules early. Lendmire’s piece How Much a DSCR Lender Lends on a North Myrtle Beach Condo covers the condo side in more depth.
Step 4: Solving Backward for the Income-Supported Loan
Lenders do not guess a loan and test it. They work backward from rent.
1. Start with rent used for eligibility review for the chosen income method.
2. Divide it by the required coverage ratio. That gives the maximum monthly obligation.
3. Subtract taxes, insurance, flood coverage where it applies, and association dues.
4. What remains is the room for principal and interest.
5. Solve that remainder for principal. That is the income-supported loan.
Here is a simple model, using index units instead of dollars. Say rent used for the lender’s review is 100 units and the fixed block of taxes, insurance, and dues is 25 units.
At a 1.00 requirement, the maximum obligation is 100 units. After the 25-unit fixed block, 75 units remain for principal and interest.
At a 1.20 requirement, the maximum obligation is about 83 units. After the fixed block, about 58 units remain for principal and interest.
That is roughly 78% of the room available at 1.00. The same property, at a stricter ratio, supports a noticeably smaller loan. Because the fixed block does not shrink, a higher required ratio cuts proceeds faster than it cuts the maximum obligation.
Ratio tiers matter because stronger coverage opens better pricing and leverage. In most of the network, 1.00 is where many select programs start. A separate select-lender path takes coverage below 1.00, with leverage and terms adjusted.
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.
Step 5: The Leverage Cap and Which Limit Binds
The second limit ignores rent entirely. It is a percentage of value.
| Item | Income cap | Leverage cap |
|---|---|---|
| Driven by | Rent, PITIA, required ratio | Price or appraised value, program tier |
| Moves with | Insurance, dues, loan structure | Credit score, property use, transaction |
| Typical purchase tier | Varies by file | 75%–80% LTV on an investment purchase |
| Cash-out refinance | Varies by file | Up to 75% LTV on a standard rental |
Most purchase files land at 75% to 80% LTV on an investment property, which means 20% to 25% down. Select high-leverage programs reach 85% LTV on a purchase, which means 15% down, generally with a score around 700 or better. Standard long-term rental cash-out refinances top out near 75% LTV, and about six months of seasoning is the common expectation. Short-term rental cash-out is capped lower, at 70%.
In a market with strong prices and high carrying costs, the income cap often binds first. A cheaper inland-style property with light dues may hit the leverage cap first, because its payment is small relative to rent. Either way, the smaller number wins.
Putting more money down lowers the monthly obligation and can lift the ratio. It does not erase leverage tiers, credit floors, reserve rules, or property eligibility. The strongest files clear both tests: enough equity and enough rental coverage.
Step 6: Run the Interest-Only Variation
Interest-only periods lower the principal and interest portion during the interest-only term. That leaves more room under the same coverage ratio, so the income-supported loan gets larger. The leverage cap does not change.
That means interest-only helps only when the income cap is the one binding. If the leverage cap already binds, an interest-only structure changes the monthly obligation but not the loan amount.
The spine of the network is the 30-year fixed. Extended terms such as 40 years and interest-only periods are available through select lenders, and adjustable structures exist for investors who want them. Above $2,500,000, the network generally holds to 30-year fixed structures. Loan sizes run up to $3,000,000 on standard programs, and Lendmire’s walkthrough of how a super jumbo DSCR lender sizes a luxury rental loan covers the upper end.
Purchase Versus Refinance Sizing
On a purchase, the leverage cap runs off the lesser of price or appraisal. If the appraisal comes in light, the cap shrinks and the investor brings more cash.
On a refinance, there is no price to anchor to, so value comes entirely from the appraisal. Seasoning matters on cash-out. A recent purchase generally needs to season before cash-out is available, and the settlement statement documents the ownership date.
Short-term rental refinances also depend on actual hosting history, since a purchase projection no longer applies. The rent figure is whatever twelve months of statements show.
Why the Loan Came Back Smaller Than Expected
When a number lands low, one of these items is usually the cause.
- Insurance or flood came in higher. The fixed block grew, so the room for principal and interest shrank.
- Association dues were missed. Condo dues are part of PITIA and they reduce room one-for-one.
- The rent method changed. A short-term projection was replaced by appraiser market rent or by trailing statements.
- The ratio tier moved. A stricter ratio for better leverage cut the income-supported amount.
- The appraisal came in under price. The leverage cap fell with value.
- Credit sat in a lower tier. Most programs want around 660, and 700 or better unlocks the strongest leverage. A 620 floor exists in parts of the network, usually with adjusted terms.
Clearing 1.00 also does not mean positive cash flow. DSCR compares rent to PITIA only. Repairs, vacancy, management, utilities, and capital expenses sit outside the calculation.
What the Lender Needs in the File
A clean file gives the lender fewer gaps to review. The usual list for a North Myrtle Beach rental covers the following.
- Entity documents if the property is held in an LLC, subject to lender program eligibility.
- A signed lease, or hosting statements for a short-term rental.
- Current insurance quotes, including flood coverage where the property is in a flood zone.
- The association’s rental rules and a completed questionnaire for condos.
- Reserves documentation. Reserves vary by lender, leverage, loan size, and transaction type. About six months of PITIA is common. Conservative rate-and-term files at modest leverage under $1,500,000 can see reserves waived, while larger loans step up to about nine months.
- Evidence that the property can legally operate under the planned rental use.
Some property types are not offered at all. Manufactured homes, log homes, and barndominiums fall outside the network’s DSCR programs, so a file built on one will not get past eligibility.
Frequently Asked Questions
Does a higher DSCR always mean a larger loan?
Not by itself. A higher ratio shows more cushion, but the loan amount is still capped by leverage tiers, credit, and reserves. A strong ratio can improve pricing and open higher leverage tiers, subject to lender guidelines.
Can a North Myrtle Beach rental qualify below 1.00?
Yes, through select lenders in the network, with leverage and terms adjusted. Many programs start at 1.00, so a sub-1.00 file is a different path, not a lower floor on the same program.
Do short-term rentals size differently from long-term rentals?
Yes. The income method is stricter and the leverage is lower: short-term rental purchases top out at 75% LTV on an investment property, and short-term rental cash-out tops out at 70%. Lenders also look for roughly 12 months of hosting history and a score around 640 or higher. Terms vary by lender guidelines, property type, leverage, credit profile, and full file review.
How much do reserves affect the loan size?
Reserves do not shrink the loan directly. They are a separate eligibility test that varies by lender, leverage, and loan size, with about six months of PITIA common. A shortfall can stop a file even when the sizing math works.
Why does the lender’s number differ from my own estimate?
The lender uses its own income method and a report run for the specific property. Public vendors disagree sharply on the same market, so an investor’s pro forma rarely matches the underwritten figure.
Next Step
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. Lendmire is a mortgage broker that arranges DSCR investor loans through select lenders in its wholesale network, spanning 41 markets, including Washington, D.C. Programs change and every file is underwritten individually, so this is not a commitment to lend.
Investors on the Grand Strand will find that the binding cap often comes down to the fixed block of insurance and dues, not to the rent they hoped to book.
About Lendmire
Lendmire — NMLS# 2371349 — is a mortgage brokerage specializing in DSCR investor loans, helping arrange financing across 41 markets, including Washington, D.C., through wholesale and investor-lending channels. The model centers on property-level rental income reviewed by the lender rather than W-2 documentation, subject to lender guidelines, suiting entity-owned and multi-property investors. Lendmire holds Scotsman Guide Top Mortgage Workplace recognition for 2025 and 2026.
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Informational only. Not a Loan Estimate, approval, or commitment to lend. Program availability and eligibility are subject to lender guidelines, credit approval, property review, and underwriting.
References
1. AirROI – North Myrtle Beach
2. Airbtics – North Myrtle Beach annual Airbnb revenue
3. City of North Myrtle Beach – Short-term Rentals
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 Finance a Portsmouth NH Rental With a DSCR Loan · DSCR vs Conventional Investment Loan for a Fifth Rental · DSCR Loan vs Conventional Loan for an Investor With Ten Rentals
Guides: DSCR Loans in North Myrtle Beach, SC · DSCR Loans in South Carolina
Brandon Miller
Founder & CEO, Mortgage Loan Originator, Lendmire LLC
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Important disclosures. Lendmire (NMLS# 2371349) is a licensed mortgage brokerage. Lendmire is not a direct lender, depository institution, or financial advisor. All loan inquiries are subject to lender underwriting; this article does not constitute a commitment to lend. Rates, terms, and program guidelines are subject to change without notice and vary by borrower profile, property type, and state. Information in this article is general in nature and is not financial, legal, or tax advice. Equal Housing Opportunity. NMLS Consumer Access: nmlsconsumeraccess.org.