The Quick Read: A recast lowers the principal-and-interest payment by roughly the same percentage as the share of the balance you pay down, because the rate and remaining term stay the same and only the balance shrinks. Taxes, insurance, and HOA dues do not change, so the full monthly obligation falls by less than the principal-and-interest line does. On a DSCR loan, it only works if the note and servicer allow a recast at all.
- Pay down 20% of the balance and principal-and-interest drops by about 20%.
- Your rate, remaining term, and payoff date stay put.
- Taxes, insurance, and dues are untouched, so coverage improves by less than the payment drops.
- Extra principal alone does not lower the payment unless the servicer re-amortizes.
- A recast does not restart or extend an interest-only period. The exact numbers vary by lender and program and follow a full review of property, leverage, and credit.
Investors hear “recast” and picture a button that shrinks the payment. It’s closer to a request form. You send a lump sum, the servicer reruns the math, and a new, smaller required payment takes over. This guide walks through how that works on a DSCR loan, how much the payment moves, and where the rule breaks.
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What Is a Recast, and What Isn’t It?
A recast is a one-time re-amortization. You pay a lump sum toward principal, and the servicer recalculates the required payment on the new, lower balance over the months that remain. The interest rate and loan term do not change. The loan does not become a new loan.
Two things get confused with it.
Extra principal payments. Sending extra money lowers your balance and total interest. But the required payment usually stays the same unless the servicer approves a recast. Your loan simply pays off sooner.
An interest-only reset. Some investor loans start with an interest-only period, then convert to a fully amortizing payment on a set date. Some people call that conversion a “recast.” It’s not. A reset is built into the note. A recast is something you request after a paydown. Same word, opposite triggers.
A recast also is not a refinance. A refinance replaces the loan, re-underwrites it, and can change the rate, term, or structure. Lendmire covers that tradeoff in its piece Mortgage Recast vs Refinance: Which Lowers the Payment the Way You Want.
How Is the New Payment Calculated?
The new payment comes from the standard amortization math applied to the lower balance, the same rate, and the months remaining. For a fixed-rate loan, the payment is proportional to the balance. Cut the balance by a given percentage and principal-and-interest falls by that same percentage.
Here is the step-by-step version:
1. You confirm the note and servicer allow a recast.
2. You make the lump-sum payment, applied to principal.
3. The servicer takes the new balance and keeps your existing rate.
4. It spreads that balance over the months left on the schedule.
5. You receive an updated schedule or notice showing the effective date.
The rule of thumb is simple. Divide your lump sum by your current balance. That percentage is roughly how much principal-and-interest drops.
| Share of balance paid down | Approximate drop in P&I |
|---|---|
| 10% | About 10% |
| 20% | About 20% |
| 30% | About 30% |
| 50% | About 50% |
This is an illustrative rule of thumb, not a quote. It assumes a fixed-rate, fully amortizing loan with an unchanged rate and remaining term.
Does Remaining Term Change the Drop?
Not the percentage. The percentage drop depends on the share of the balance you retire. Remaining term changes the dollar size of the drop. A longer remaining term spreads the same balance over more months, so each month’s payment is smaller to begin with, and the dollar savings from the same percentage cut are different. With a shorter remaining term, payments are larger and the same percentage cut saves more dollars per month. The percentage rule holds either way.
Why Does DSCR Improve Less Than the Payment Drops?
Coverage improves by less than the principal-and-interest payment because DSCR compares rent to the full monthly obligation. That obligation is PITIA: principal, interest, taxes, insurance, and any HOA dues. A recast only touches the principal-and-interest piece.
Picture a rental whose rent covers the full obligation at about 1.10x. You pay down a meaningful share of the balance and principal-and-interest falls by that share. Taxes and insurance don’t budge. The total obligation falls by less than the P&I line, so coverage might move to around 1.2x, not by the full percentage. The bigger taxes and insurance are relative to principal and interest, the smaller the improvement.
Two more points matter here.
The current loan is not re-tested. Coverage was measured when your loan was originated. A recast doesn’t rerun that test. The better ratio matters the next time someone reviews the property’s rental income: a refinance, a sale to a buyer using financing, or a cash-out. Across most programs in Lendmire’s wholesale network, 1.00 is where select programs start, and stronger ratios open better pricing and leverage. A separate select-lender path takes coverage below 1.00, with leverage and terms adjusted. Either way, a stronger number helps your next file.
Clearing 1.00 is not positive cash flow. DSCR compares rent to PITIA only. Repairs, vacancy, management, utilities, and capital expenses sit outside the calculation. A recast improves the ratio, but it doesn’t tell you what you keep each month.
For the broader picture on how these loans are structured, see the complete DSCR loans guide.
Will My DSCR Servicer Allow a Recast?
Possibly, but never assume it. Servicers are generally not required to offer recasts, as Great Oak Advisors notes. Whether a recast is available on a DSCR note depends on the note language and the servicer. A loan that has been sold or pooled may limit what the servicer can do.
A principal payment on its own doesn’t trigger a recast either. You generally have to request it and meet the servicer’s conditions. Without that request, extra principal usually leaves the required payment unchanged.
Many conventional recasts don’t require a credit check, income documents, or an appraisal. Whether a DSCR servicer asks for anything beyond a good-standing check, or charges a fee, is specific to the note. Don’t wire money first and ask later.
Before You Wire the Money: What to Verify
Ask the servicer these questions in writing, before any lump sum leaves your account:
- Does the note permit a recast, and does the servicer offer one?
- Is there a minimum lump sum?
- Is there a recast fee?
- Does a large paydown trigger a prepayment penalty under the note?
- Is there a waiting period or seasoning requirement?
- What is the effective date, and how is the new payment calculated?
- Is a good-standing check required?
- Does the note have a balloon or short maturity that a recast cannot fix?
Prepayment penalties deserve special attention on investor loans. A large paydown can interact with that clause, and only your note tells you how. Many DSCR notes carry one, so read it before you move cash.
Where the Rule Breaks: Edge Cases
Interest-only loans. During an interest-only period, the payment covers interest only. The CFPB explains that the amount owed doesn’t fall with each payment, and at the end of the period the payment steps up when principal repayment begins. Interest-only structures are available through select lenders in the network.
A paydown before the reset shrinks the balance that gets amortized, which softens the jump. A recast during the interest-only window can lower the interest-only payment going forward. It does not extend or restart the interest-only period.
Extra principal with no recast. Your balance falls, total interest falls, and payoff comes sooner. The required payment stays the same. That is a valid strategy. It just isn’t a payment cut.
Balloon or short-maturity notes. A recast changes the payment, not the maturity date. If a balloon comes due, a recast won’t remove it unless the note says so.
Terminology collision. Some lenders use “recast” for the scheduled reset. Confirm which one a document means before you plan around it.
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.
Recast vs. Extra Principal vs. Refinance
| Factor | Recast | Extra principal | Refinance |
|---|---|---|---|
| Required payment | Drops | Stays the same | Resets with new loan |
| Rate | Unchanged | Unchanged | New |
| Payoff date | Unchanged | Sooner | New term |
| Underwriting | Servicer approval | None | Full re-underwrite |
| Cash out | No | No | Possible |
| Total interest saved | Less | Most | Depends on new terms |
A recast keeps your existing rate. That suits an investor holding a rate below what’s available today. A refinance makes sense when you want a new structure, cash out, or a rate improvement. Cash-out refinances on standard rentals top out around 75% LTV across most of the network, with about 6 months of seasoning as the common expectation, and the property is retested on rent. A recast does none of that. Final terms depend on the lender’s guidelines, the property type, and the borrower’s complete credit picture.
What Does the Recast Cost You in Interest Savings?
A recast gives up some interest savings in exchange for monthly cash flow. If you keep the old payment and send the same lump sum, you pay the loan off sooner and save the most interest. A recast takes that same lump sum and spreads the benefit into lower monthly payments instead.
A lender-moderator on BiggerPockets frames it this way: the return equals the interest rate either way, and the real question is whether you want more cash flow now or to be debt-free sooner. That framing holds up.
Liquidity belongs in the decision too. Cash you pay down is hard to pull back out without a refinance. Reserves matter on DSCR files, and requirements vary by lender, leverage, loan size, and transaction type, commonly around 6 months of PITIA. Don’t drain the reserves you’ll need for your next acquisition or refinance.
Recast, Prepay, or Refinance: How to Decide
| If this is your goal | Lean toward |
|---|---|
| Lower the required payment, keep the current rate | Recast (if allowed) |
| Pay off sooner, save the most interest | Extra principal |
| Change structure, pull cash, or replace the rate | Refinance |
| Improve coverage for a planned refinance or sale | Recast, then re-test |
| Keep cash for the next purchase | Skip the paydown |
A larger paydown lowers the payment and can lift coverage. It never erases leverage caps, credit floors, reserve rules, or property eligibility. The strongest DSCR files clear both tests: enough equity and enough rental coverage.
A practical example. Say you hold a rental financed at 75% LTV on a purchase, and coverage sits near 1.05x. You plan to refinance later. A paydown and recast could lift coverage into the 1.15x to 1.2x range, which may improve the options a lender reviews. It’s not automatic, and results depend on taxes, insurance, and the property, subject to lender guidelines.
Investors also weigh a paydown against using the same cash on another property. That is an opportunity-cost call, not a math problem. The paydown earns a certain return equal to your loan’s interest cost. A new acquisition earns whatever it earns, with more risk.
Key Terms Defined
Recast: A one-time re-amortization where the servicer recalculates the required payment on a lower balance, keeping the rate and remaining term.
Re-amortization: Spreading the current balance over the months that remain so the loan still pays off on schedule.
PITIA: Principal, interest, taxes, insurance, and association dues, the full monthly obligation used in the DSCR calculation.
DSCR: Debt service coverage ratio, which compares a property’s rent to its PITIA.
Interest-only reset: The scheduled date when an interest-only loan converts to a fully amortizing payment.
Prepayment penalty: A charge in some notes for paying down or paying off a loan earlier than agreed.
Frequently Asked Questions
Does a recast lower my interest rate?
No. The rate stays exactly as it was. Only the balance and the required payment change. If you want a different rate, that takes a refinance.
Can I recast an interest-only DSCR loan?
Sometimes, if the note and servicer allow it. A recast can lower the interest-only payment as the balance falls. It does not extend or restart the interest-only period, so the reset date stays where it was.
Will a recast raise my DSCR?
On the next underwriting, usually yes, but by less than the principal-and-interest drop, because taxes, insurance, and dues stay fixed. It doesn’t change the coverage test already run on your existing loan.
Is there a fee or a credit check?
It depends on the note and servicer. Many conventional recasts skip a credit check, but a DSCR servicer may differ. Ask for fees, minimums, and any good-standing requirement in writing before you send funds.
Is a recast the same as a reset?
No. A reset is a contractual date when an interest-only period ends. A recast is a voluntary request you make after a paydown. Check each document to see which meaning applies.
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 broker arranging financing through select lenders in its wholesale network across 41 markets, including Washington, D.C., and nothing here is a commitment to lend.
Tax treatment varies; consult a qualified professional.
About Lendmire
Lendmire is a DSCR-focused mortgage brokerage, NMLS# 2371349, placing investor loans across 41 markets, including Washington, D.C. DSCR eligibility is generally reviewed by the lender around a property’s rental income rather than personal income documentation, which fits LLC-held rentals, self-employed investors, and portfolios scaling past conventional financed-property limits. Scotsman Guide named Lendmire a Top Mortgage Workplace in both 2025 and 2026.
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References
2. CFPB – What is an interest-only loan
3. BiggerPockets forum – Recast vs Pay-down Economics
This article is part of Lendmire’s DSCR loan program — full qualification details, guidelines, and scenarios live on the program page.
Related reading: How Much a Drop in Airbnb Occupancy Changes a DSCR Loan Amount · How to Document a Below-Market Lease for a DSCR Loan · How to Protect a DSCR Loan File With a Backup Lender
Brandon Miller
Founder & CEO, Mortgage Loan Originator, Lendmire LLC
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Required disclosures. Lendmire (NMLS# 2371349) operates as a licensed mortgage broker, not a direct lender or depository. The discussion in this article is general in nature and should not be relied upon as financial, legal, or tax advice — every investment scenario is unique and should be reviewed by a qualified professional. Any loan inquiry is subject to lender underwriting, and this article is not a commitment to lend or a guarantee of approval. Mortgage rates, loan terms, and program guidelines vary by borrower, property, and state, and may change without notice. Equal Housing Opportunity. Verify licensure at NMLS Consumer Access.