The Quick Read: When the interest-only period on a $4M DSCR loan ends, the monthly payment steps up because the full, unchanged balance must now be repaid over the years that remain, even if the note rate never moves, so coverage measured against the same rent falls, and a liquidity event does not change that math. The reset is a scheduled contract event, not a market event. What the sale proceeds change is who can absorb it.
- Principal repayment starts at the reset date, on a balance that did not shrink during the interest-only window.
- At closing, the loan is tested on interest, taxes, insurance and association dues (ITIA). After the reset, the payment includes principal as well.
- A file that clears comfortably before the reset can land near or under 1.00x afterward on flat rent.
- Sale proceeds support the down payment and reserves. They are not qualifying income on a DSCR loan.
- The exit refinance is a new underwriting event, and at this balance the leverage limits are tight.
Key Terms Defined
Interest-only (IO) period. A stretch of the loan, often 120 months in the large-balance programs we place, when you pay interest and no principal.
Reset (or recast). The date the loan converts from interest-only payments to payments that repay principal as well.
ITIA. Interest, taxes, insurance and association dues. It is the payment lenders test on an interest-only DSCR loan, because there is no principal in it yet.
PITIA. The same list with principal added. It is the payment after the reset.
Coverage ratio (DSCR). Monthly rent divided by the property’s monthly obligation. A ratio of 1.00 means the rent just covers it.
Remaining amortization. The number of years left to repay the full balance once the interest-only window closes.
Liquidity event. A business sale, equity exit or similar event that turns an ownership stake into cash.
DSCR Calculator
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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.
How Underwriting Treats a $4M Interest-Only File
At closing, the lender tests the property, not the founder. On interest-only files across the wholesale network Lendmire places loans with, the test is rent against ITIA. Select programs offer a 120-month interest-only period on 30- and 40-year terms, subject to underwriting.
Here is how a file like this moves, step by step.
1. The size sets the leverage. A $4M balance sits at the top of the $3M-$4M band. On a purchase or rate-and-term refinance of an investment property, that band tops out at 65% LTV with credit of 700 or higher for that leverage. Above $4M, programs go to 60% on review, case by case before submission. There is no cash-out in either band.
2. The review gets heavier. Loans above $2,000,000 call for two appraisals. Above $3,000,000, the super-jumbo overlay requires a 700 credit score, 0x30x24 housing history and 48 months of seasoning after any credit event. It also limits borrowers to citizens and permanent residents and excludes rural property.
3. Reserves come first. Typical reserves are six months of ITIA on the subject property for an interest-only loan, and twelve for a first-time investor. Cash-out proceeds never satisfy them.
4. Coverage is tested on the interest-only payment. The ratio you see at closing reflects that payment. It does not describe your position after the reset. Every figure here varies by lender and program — guidelines, property type, leverage, and credit profile all apply.
Some programs test coverage on a fully amortizing payment even though you pay interest-only. In that case, interest-only helps monthly cash flow but does not help the ratio. Ask which test applies before you assume anything.
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. Entity vesting is welcome, with no layered entities, subject to program terms.
Why a Liquidity Event Does Not Change the Math
A liquidity event changes your balance sheet. It does not change the loan contract. The reset date, the remaining amortization and the tested payment are written into the note and the term sheet, so the sale of a company cannot move them.
On a DSCR loan, the file qualifies primarily on property-level rental income covering the payment, subject to lender guidelines. Your proceeds do not count as income. They matter upstream, in three places:
- Down payment. The funds must be liquid and documented back to their source.
- Reserves. The six-month requirement on the subject property is met from your own liquid assets.
- Source of funds. Business distributions, asset sales and investment redemptions are generally acceptable sources when documented. A deposit that just landed needs a clean paper trail.
There is also a quieter effect. Selling the business removes the income you used to draw from it. That is exactly why the property-income path appeals to founders. The lender tests the building instead of asking you to document income that no longer exists.
Here is the catch. A large cash position can mask a thin file. Proceeds make the reset feel affordable, but the property’s own coverage is what a future lender will judge. Treat the cash as a tool, not as proof that the loan works.
What Happens When the Interest-Only Window Ends
The payment rises at the reset even if interest rates stay exactly where they are. The OCC’s guidance on interest-only mortgage payments explains why: principal must now be repaid along with interest. Its worked structure is a 30-year loan with a 5-year interest-only period, which becomes principal and interest over the remaining 25 years. The OCC also notes that interest-only periods typically run between 3 and 10 years.
That guidance is written for consumer mortgages. Your loan is a business-purpose loan, so the legal frame differs, but the arithmetic is the same.
The CFPB’s adjustable-rate mortgage booklet makes the related point. The longer the interest-only period, the larger the payment increase when it ends. The reason is simple: a longer window leaves fewer years to repay the same balance.
Remaining amortization is the lever that sets the size of the jump:
- A 10-year interest-only period on a 30-year note leaves 20 years to repay the entire original balance.
- The same 10-year window on a 40-year build leaves 30 amortizing years, so the step-up is smaller.
- A 40-year loan usually means 10 years interest-only plus 30 years amortizing, or a full 40-year amortization. It rarely means 40 years of interest-only.
Fixed versus adjustable matters too. On a fixed-rate loan, only the payment type changes at the reset. On an adjustable loan with an interest-only period, you can face a second shock if the rate adjusts around the same time. Know both dates, because they do not always match.
Which Payment Is Tested, and Which One Do You Carry?
Three payments exist on this loan, and only one of them is the one you will live with long term.
| Moment | Payment in play | What it tells you |
|---|---|---|
| Underwriting | ITIA (no principal) | Whether rent clears at closing |
| During the window | ITIA, balance flat | Cash flow, but no equity from paydown |
| After the reset | PITIA on the full balance | Long-term coverage |
The ratio at closing is a point-in-time test. It is not a promise about year 10. A modeled file that clears at around 1.25x on interest-only can land near or under 1.00x after the reset if rent stays flat. That is an illustration, not a figure from any file.
Run the Founder’s Stress Test
You do not need a spreadsheet to understand the method. You need three steps and some honest assumptions.
1. Take the rent you expect in year 10, not today’s rent. Be conservative, because rent growth and growth in taxes and insurance rarely move together.
2. Divide it by the amortizing payment on the full balance over the remaining term, plus the taxes, insurance and association dues that will exist by then.
3. Repeat with a vacancy haircut and a lower appraised value.
If the answer sits comfortably above 1.00x under the haircut, the reset is a nuisance. If it sits near 1.00x, the reset is a decision point you should plan for now. Clearing the ratio is also different from the property carrying itself, because a ratio at 1.00x leaves nothing for repairs or vacancy.
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.
Your Reset Options
You have five realistic paths, and each one has a cost.
| Option | What it does | What to confirm |
|---|---|---|
| Hold and absorb | Pay the higher payment from rent and reserves | Coverage on future rent; cash cushion |
| Partial paydown | Cuts principal before the reset | Whether the note allows it; effect on the new payment |
| Refinance | Replaces the loan before or at the reset | Value, rent, credit, leverage limits, penalty |
| New interest-only term | Starts a fresh window on a new loan | Old clock ends at payoff; new qualification |
| Sell | Exits before or after the reset | Penalty window; market conditions |
Voluntary principal payments are generally allowed during the interest-only period, but read your note. Liquidity-event money can shrink the balance before the reset and soften the jump. That is a strategy choice, not a promise of any outcome.
Why “I’ll Refinance Later” Is Not a Plan at This Size
A refinance is a future application, not a guaranteed exit. A future lender will judge the property under future conditions, not today’s forecast. At a $4M balance, the guardrails matter more, not less.
Run through what the exit file faces:
- Leverage. On a rate-and-term refinance of an investment property, the $3M-$4M band tops out at 65% LTV, and requests above $4M go to 60% on review. If the value falls or the balance has not been paid down, you may need cash at the table.
- No cash-out. Cash-out is not available above $3,000,000. So a refinance at this size cannot pull equity out to cover the reset. For a deeper comparison of the two refinance types, see Lendmire’s piece Cash-Out vs Rate-and-Term Refinance After a Founder’s Liquidity Event.
- Coverage. Programs that accept coverage below 1.00 exist through select lenders, but they reach only $2,000,000, and LTV and terms adjust, subject to underwriting. A $4M refinance generally needs to clear 1.00 on its own.
- Review. Two appraisals, a 700 credit score and fresh reserves apply again.
The old interest-only clock also ends when the old note pays off. A new window requires a new loan that meets all of the above. Some founders compare a portfolio loan against a super jumbo DSCR structure for this reason, and Lendmire’s piece on super jumbo DSCR versus a portfolio loan covers that trade-off.
Across the wholesale network, the pattern is consistent. Founders who plan the exit file before the reset arrives have choices. Founders who wait for the reset to arrive often have one.
Prepayment Penalties and the Exit
Prepayment penalties are the quiet constraint on every early exit. Many programs use a schedule that steps down each year over five years, and longer terms are uncommon. The schedule on your note decides what it costs to refinance or sell before the penalty window ends.
You are timing two clocks: the reset date and the penalty window. Refinancing just ahead of the reset can trigger the old penalty and start a new one on the replacement loan. Some programs offer shorter or no penalty, though that usually changes other terms of the loan.
Edge Cases Where the General Rule Bends
- Balloon structures. Some structures mature with the unpaid balance due, rather than converting to monthly principal repayment. That creates refinance and sale risk. Confirm that your note converts rather than balloons.
- Stacked reset dates. Several interest-only loans with conversion dates close together compound the portfolio-wide increase. Interest-only helps qualify one property. It does not expand overall borrowing capacity. Programs in the network allow up to 20 financed properties, so spread the dates.
- Delayed financing. After a cash purchase with liquidity-event money, a delayed-financing refinance can return capital. The loan is capped at the lesser of appraised value or documented purchase cost. How the file is classified depends on the program.
- Adjustable notes. The two-shock scenario described earlier applies only here.
- Short-term-rental collateral. Those files stop at $2,000,000, so they do not reach this balance.
A Reset Calendar
You are a business-purpose borrower, so nobody sends a reminder. Track the date yourself.
- 24 months out. Rerun the stress test. Check the penalty schedule and decide whether you will hold, refinance or sell.
- 12 months out. Refresh rent comps and insurance quotes. Order a rough value check. Confirm your reserves are still liquid and documented.
- 6 months out. If you plan to refinance, gather documents and talk to your broker about program fit and leverage at your balance.
- 3 months out. Make the paydown decision. Confirm the new payment with your servicer.
Common Mistakes
Treating the interest-only coverage as permanent. It describes closing day only.
Spending all the savings. Interest-only keeps early cash flow high. Founders who spend that cushion have nothing left when the payment steps up.
Assuming a low payment means a cheaper loan. The payment is low because principal reduction is postponed.
Believing 40-year means 40 years of interest-only. It usually does not.
Letting proceeds become the whole plan. Cash can fund a paydown, but it also concentrates your net worth in one leveraged asset. Think about what happens if value falls.
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.
For the full picture of how these loans work, see Lendmire’s complete DSCR loans guide.
Frequently Asked Questions
Does the payment really jump even if rates do not change?
Yes. The payment rises because principal repayment begins on the full balance over fewer remaining years. On a fixed-rate loan, the note rate does not change at all. Only the payment type does.
Will my sale proceeds count as income for the DSCR test?
No. The file qualifies primarily on property-level rental income covering the payment, subject to lender guidelines. Proceeds support the down payment, reserves and source-of-funds documentation.
Can I pay down principal before the reset?
Generally yes, because most notes do not prohibit voluntary principal payments during the interest-only period. Read your note and ask your servicer. A paydown before the reset reduces the balance that must be amortized, which softens the jump.
Can I refinance into a new interest-only period?
Possibly, but it is a new loan with new underwriting. At a $4M balance, leverage is limited to 65% on a rate-and-term refinance of an investment property, with requests above $4M reviewed case by case at 60%. Cash-out is unavailable above $3,000,000. All of this is subject to underwriting.
Next Steps
If you are buying or refinancing a high-balance rental property and want to see how the numbers work, Lendmire can help you compare super jumbo DSCR loan options based on the property income, the loan balance, credit profile, leverage, and investor goals. Lendmire is a broker arranging business-purpose financing through select lenders in its wholesale network, across 41 markets including Washington, D.C. Nothing here is a commitment to lend, and every file is underwritten individually.
The reset date will arrive on schedule, so the founders who treat it as a fixed point on the calendar are the ones who choose how it lands.
Lendmire’s self-employed mortgages page presents both super jumbo programs, bank statement and DSCR, side by side.
About Lendmire
Lendmire — NMLS# 2371349 — is a DSCR and non-QM mortgage brokerage with investor loan programs in 41 markets, including Washington, D.C. DSCR eligibility is commonly reviewed by the lender around property-level rent rather than personal income documentation, subject to lender guidelines, and the brokerage helps arrange financing for LLC-owned portfolios beyond conventional financed-property limits. Recognized by Scotsman Guide as a Top Mortgage Workplace in 2025 and 2026.
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References
1. OCC – Interest-Only Mortgage Payments and Payment-Option ARMs
2. CFPB – Consumer Handbook on Adjustable-Rate Mortgages
This article is part of Lendmire’s super jumbo DSCR loan program — full qualification details, guidelines, and scenarios live on the program page.
Related reading: How a Luxury Rental DSCR Loan Works in Sarasota · How to Document a 40-Year Super Jumbo DSCR Loan · How a Luxury Rental DSCR Loan Works
Brandon Miller
Founder & CEO, Mortgage Loan Originator, Lendmire LLC
- Mortgage Loan Originator · NMLS# 1129696 · Verify on NMLS Consumer Access
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- Lendmire LLC · Firm NMLS# 2371349 · Verify firm licensure
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.