The Quick Read: An interest-only reset is the date written into your note when payments stop covering interest alone and start paying down principal as well. The balance stays flat during the interest-only years, then gets spread over only the months left on the term. That is why the payment jumps even when nothing else about the loan changes. On a portfolio loan, one note and one reset date apply to every rental in the pool, so the whole pool steps up together.
- The reset re-amortizes the same balance over the remaining term, not over a fresh full term.
- A rate change is not required for the payment to rise.
- Coverage that passes on the interest-only payment can fall once amortization begins on the same rents.
- Lenders differ on which payment they test, so ask before you choose the structure.
- Plan for the reset at least two years out, using today’s rents and no assumed rent growth.
What Is an Interest-Only Reset?
A reset is a scheduled change in how your payment is built. During the interest-only phase, you pay interest on a balance that does not shrink. At the reset date, the loan converts to a payment that covers interest and principal.
The Consumer Financial Protection Bureau describes the basic design this way: scheduled payments cover only interest for a set period, and the amount owed does not go down with each payment. When that period ends, the same page lists three paths. You pay off the balance, refinance if refinancing is available, or begin higher payments that pay down the balance. It also warns you not to assume you can sell or refinance if your payment goes up.
That warning matters more on a portfolio loan, because the exit involves several properties at once.
Key Terms Defined
Portfolio DSCR loan: One note secured by several rental properties. Investors also call it a blanket loan or a cross-collateralized loan. All three names describe the same thing. (A bank’s own portfolio loan, meaning a loan the bank keeps on its books, is a different use of the word.)
Interest-only period: The stretch of the loan when you pay interest only and the balance stays flat.
Reset (re-amortization): The scheduled switch from interest-only payments to payments that pay down principal over the remaining months.
Recast: A voluntary re-calculation of the payment after you make a large principal paydown. It lowers the payment but does not create a new interest-only window.
Balloon: A lump-sum balance due at maturity, instead of a loan that pays itself off through amortization.
Pooled coverage: The combined rent of every property in the pool divided by the combined monthly debt service. Debt service here means principal, interest, taxes, insurance and any HOA dues.
How the Two Portfolio Structures Handle It
Across the network of wholesale lenders Lendmire works with, portfolio financing comes in two main shapes, and they treat the end of interest-only very differently.
The 30-year portfolio DSCR loan holds two to twenty properties under one note. Loan sizes run from $300,000 to $5,000,000, with larger balances on review. Leverage goes up to 80% of value on a purchase or rate-and-term refinance of investment property. It carries a 30-year term on a 30-year schedule, with fixed or adjustable rates, and an interest-only period is available. Eligible property types are single-family, 2-4 unit, condo and townhome. This is the structure where a true reset happens: the note re-amortizes and keeps going.
The rental portfolio term loan is built for five or more rental properties or units under one loan. Loan sizes run from $500,000 to $50,000,000, with larger balances on review. Leverage goes up to 75% of value. Terms are fixed at 3, 5, 7 or 10 years with a balloon at maturity. Small multifamily of five or more units is eligible only on this structure. Here the question is not a payment step-up but a maturity: the balance comes due, and you pay it off, refinance or sell. Non-recourse versions exist, with carve-outs for items such as fraud and bankruptcy. Prepayment runs on a yield-maintenance schedule, so refinancing out early can carry a real cost. Read your note for the specifics.
How Underwriting Treats the Interest-Only Period
Here is the sequence on a typical file. Each step is where a reset can surprise you.
1. The lender sets the pool. Each property needs a lease or an appraiser-supported market rent. Rents are added together, and so are the debt-service figures.
2. Coverage is measured on the pool. The 30-year portfolio DSCR loan uses a 1.00 floor on pooled rent against pooled debt service. Stronger properties can offset weaker ones. This is a program floor, and stronger ratios generally open better pricing and leverage. Subject to lender guidelines.
3. The lender picks the payment to test. Some programs test on the interest-only payment. Others also want a minimum ratio on the fully amortizing payment. Many files we see come back with a lower coverage number once the second test is applied.
4. Interest-only lowers the denominator. Rent does not change, so the improvement exists only at the test date. It is a qualifying tool, not extra income.
5. Reserves may follow a different payment. Some programs size reserves on the amortizing payment even when coverage is tested on interest-only. Ask which payment drives each number.
6. Credit and entity are reviewed. The portfolio programs generally want a 640 credit score, with 680 or 720 on some structures. A special-purpose entity, typically an LLC, is required on some structures, subject to program terms. Recourse loans carry a personal guarantee.
Clearing 1.00 is also not the same as positive cash flow. The ratio compares rent to the monthly obligation only. Repairs, vacancy, management, utilities and capital expenses sit outside it.
For readers wondering whether interest-only can help a smaller pool qualify, Lendmire covers that in its article Does Interest-Only Help a Thin Portfolio Qualify for a DSCR Loan?.
What the Payment Step Looks Like
The reset does not start a new 30-year clock. Calcipedia’s interest-only calculator makes the point plainly. A 30-year mortgage with a 10-year interest-only period does not become a new 30-year loan after year ten, so the whole balance must amortize over the remaining 20 years.
Here is the pattern in coverage terms. This is an illustration, not a quote, and the real result depends on the note’s rate, taxes and insurance. Suppose a pool covers its payment at about 1.25x while interest-only. After the reset, the same balance is paid down over a shorter window. Coverage on identical rents can land near 1.00x or below. Nothing about the properties changed. Only the payment’s shape did.
Three things control the size of the step:
- Interest-only length. The longer the interest-only period, the shorter the amortization window left, and the bigger the jump.
- Fixed or adjustable. On a fixed-rate note, only the payment type changes. On an adjustable note, a change in the note’s terms can land on the same date and stack on top of the amortization change.
- Rent growth. If rents have not risen, the step lands on the same income you started with.
The payment rises at the reset even if the rate never moves. People expect shock only from rate increases, and that expectation is wrong.
Reset, Recast and Balloon Are Three Different Events
These get mixed up constantly, and the difference changes your options.
A reset is scheduled by the note. You do not choose it. A recast is your choice, usually after a lump-sum paydown. The lender re-computes the payment on the lower balance. It softens the step, but it does not restart interest-only. A refinance replaces the note entirely, which means fresh underwriting and possibly a new interest-only window, if the new program offers one.
A balloon is the third scenario. On the rental portfolio term loan, there is no re-amortization at all. The note matures and the balance is due. The planning question shifts from “Can the rents carry the higher payment?” to “Can I refinance or sell by maturity?”
A common misconception is that a 40-year loan means 40 years of interest-only. It does not. Extended-term and interest-only structures are available through select lenders in the network, and each note spells out how many months are interest-only and how many are amortizing. Read those two numbers first.
Where the General Rule Breaks
Business-purpose treatment. 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. That is why interest-only is a normal feature here.
The weakest property. Pooled coverage lets a strong rental offset a thin one. A rental below 1.00 coverage can sit in the pool, but underwriting tests the pooled coverage, the leverage and the terms. After the reset, that thin property drags harder, because every payment grows.
Selling one property. Partial releases, substitutions and single-property sales follow the loan documents. The release price runs above the property’s allocated balance. The remaining pool must still cover its debt service. A sale that looks like a win on one property can push the rest of the pool under the coverage line.
Extending interest-only. Extension is not something to count on. Amending a note is at the lender’s discretion, and replacement is the usual route. Treat any extension as a bonus, never as the plan.
Property types. Manufactured and mobile homes are not reviewable on these programs. Co-ops, mixed-use, commercial and owner-occupied property are ineligible in the pool as well.
Cash-out at exit. If your exit is a cash-out refinance of the pool, leverage never exceeds 75% of pooled value on standard rentals, and the structure’s own ceiling still applies.
Your Four Exit Paths
Before the reset, you have four realistic moves. They are not mutually exclusive.
| Path | What it does | What it needs | Main risk |
|---|---|---|---|
| Refinance | Replaces the note | Fresh underwriting, enough coverage | Not assured to be available |
| Paydown and recast | Lowers the new payment | Lump sum of cash | Ties up liquidity |
| Sell or release | Removes properties | Release terms met | Remaining pool must still cover |
| Absorb the step | Keeps the loan as is | Rents or reserves that carry it | Thin cushion if rents stall |
The CFPB’s advice applies to the first row. Refinancing is listed only as an option “if available,” so model the post-reset coverage using today’s rents and assume no rent growth. If the pool survives that test, the refinance becomes a choice rather than a rescue.
If you refinance before the reset, check the prepayment schedule. On a term loan with yield maintenance, leaving early can be costly. Interest paid during the interest-only years also stays higher in total, since the principal never shrank. Tax treatment varies; consult a qualified professional.
Reset-Readiness Timeline
Twenty-four months out: Pull the note and find the interest-only months, amortization months, maturity date, any balloon, and any adjustable-rate terms. Confirm the prepayment schedule.
Twelve months out: Re-run pooled coverage on the post-reset payment using current rents. Identify the weakest properties. Decide whether a paydown, a sale or a refinance is the likely path.
Six months out: Start the refinance or release conversations if that is the plan. Refresh leases, rent roll and credit. Keep in mind that a refinance is a new loan with its own review, and leverage and coverage standards apply again.
To back-solve a paydown, work backward from the coverage you want after the reset. Ask what balance produces that ratio on the remaining term, then compare that to your current balance. The difference is the paydown you need.
Common Mistakes
- Assuming the reset starts a new 30-year clock.
- Underwriting only the interest-only coverage and never the amortizing one.
- Counting on rent growth to rescue a thin pool.
- Forgetting that an adjustable rate can adjust on the reset date.
- Treating a refinance as guaranteed rather than as a new application.
- Selling the strongest property first and leaving a weak remaining pool.
Frequently Asked Questions
What happens when the interest-only period ends on a portfolio loan?
The loan re-amortizes the unchanged balance over the months remaining, and the payment rises for the whole pool. On the 30-year portfolio DSCR loan, this happens on the date in the note. On the rental portfolio term loan, the balance comes due at maturity instead.
Is a reset the same as a recast?
No. A reset is scheduled by the note and cannot be avoided. A recast is a voluntary payment re-calculation after a large paydown. A recast does not create a new interest-only window.
Can I extend the interest-only period?
Sometimes, but do not plan around it. Amendments are at the lender’s discretion, and most investors who want more interest-only years refinance into a new loan. That means a new review of coverage, credit and leverage.
What if one property in the pool underperforms?
Pooled coverage lets stronger properties offset it, so the pool can still clear its floor. After the reset, that property’s weakness shows up more, because the combined payment is higher. Releasing or selling it follows the loan documents and release terms.
Can I refinance before the reset?
Often yes, but a prepayment schedule may apply, especially on the term loan’s yield-maintenance structure. Refinancing is also a fresh application, and qualification is subject to lender guidelines, credit approval and property review.
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 arranging financing through select lenders in its wholesale network across 41 markets, including Washington, D.C. For the full picture of how these loans work, start with the complete DSCR loans guide. A pool that still covers its payment on the amortizing schedule is the one you can hold through the reset without needing the refinance to cooperate.
About Lendmire
Lendmire, NMLS# 2371349, is a non-QM mortgage broker serving real estate investors in 41 markets, including Washington, D.C., through DSCR investor loan programs. Qualification is generally reviewed around the subject property’s rental income, not the borrower’s W-2 history — a practical fit for LLC-titled portfolios and self-employed investors. All scenarios remain subject to lender review and program guidelines. Two consecutive Scotsman Guide Top Mortgage Workplace recognitions (2025, 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. Consumer Financial Protection Bureau
2. Calcipedia – Interest-only calculator
This article is part of Lendmire’s DSCR loan program — full qualification details, guidelines, and scenarios live on the program page.
Related reading: Can You Get an Interest-Only DSCR Loan on a Condo? · Does an Interest-Only DSCR Loan Help a Rental Qualify? · How to Add a Third DSCR Loan to a Growing Rental Portfolio
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.