The Quick Read: Yes. The interest on an investment property loan is deductible against rental income. You report it on Schedule E, not Schedule A. The loan principal is never deductible — paying down your balance just returns capital, it isn’t an expense. A primary home has a $750,000 debt cap on interest. A rental loan doesn’t. The deduction scales with the loan itself, based on how you used the borrowed money. The real complexity isn’t whether interest is deductible. It’s whether the loss that interest helps create can offset your other income right now. That question runs into a separate set of rules.
Key Terms Defined
- Schedule E — the IRS form where rental income and rental expenses, including mortgage interest, get reported. It’s separate from Schedule A, the itemized-deduction form used for a primary residence.
- Tracing Rule — the IRS principle that deductibility of loan interest follows how the borrowed money was spent, not which property secures the loan.
- Points (OID) — prepaid interest charged at closing. On a rental loan, points generally get spread (amortized) over the loan’s term instead of deducted all at once in the year paid.
- Passive Activity Loss (PAL) rules — a separate limit that decides whether a rental loss, after interest and other expenses are counted, can offset a taxpayer’s other income — like a salary — in the current year.
- DSCR loan — a loan qualified using the property’s rental income compared against its own monthly obligation, rather than the borrower’s personal income documents. Lendmire’s complete DSCR loans guide walks through the full mechanics.
- Section 163(j) business interest limitation — a federal cap on how much business interest expense a larger operation can deduct in a year. Most individual rental investors fall well under the size threshold that triggers it.
Interest Is Deductible. Principal Never Is.
The IRS treats mortgage interest on a rental property as a normal cost of running that business. You can deduct it against the rental income the property produces. This rule applies no matter what loan financed the purchase. A conventional mortgage, a portfolio loan, and a non-QM or DSCR loan all get the same treatment. The IRS doesn’t care about the loan program. It cares about how you use the property and how you spent the borrowed money.
Here’s what trips up a lot of first-time landlords. The deduction covers interest only. It never covers the full payment. Every mortgage payment blends interest with principal. Only the interest slice counts as an expense. Paying down principal just shrinks your loan balance. You can’t write that part off against income, no matter how the loan is structured.
This is also where the primary-residence rules stop applying. A main home or second home faces an acquisition-debt cap on Schedule A. That cap does not apply to a rental property loan reported on Schedule E. Instead, Schedule E interest follows the tracing rule. What matters is where the money went, not a dollar ceiling on the loan.
How the Deduction Actually Gets Claimed, Step by Step
It lands on Schedule E, Line 12 — not Schedule A. You enter rental mortgage interest paid during the year to banks or other financial institutions there. You deduct it in the year it’s properly allocable. That’s not always the year prepaid interest happens to hit an account.
The paper trail runs through Form 1098. Pay $600 or more in mortgage interest on a rental to one lender, and that lender should send you a Form 1098 or a similar statement. Investors using private or non-bank capital — common in the non-QM and DSCR space — should confirm the servicer sends one of these two documents. The IRS accepts either one.
Points get amortized, not expensed. This trips up more rental investors than anything else on this list. Points — sometimes called origination fees or loan discount fees — count as prepaid interest. Because they’re prepaid, you usually can’t deduct the full amount in the year you paid it. You spread it out over the loan’s term instead. The IRS gives a clear example. A borrower takes out a $100,000 rental-property loan. She pays $10,000 in stated interest during the year. She also pays $1,500 in points at closing. She can’t write off that full $1,500 right away — it amortizes across the loan term. There’s a narrow exception called the de minimis original-issue-discount test. It covers roughly a quarter of one percent of the loan’s redemption value times its term. Very small point amounts can skip amortization under this test. But most rental-loan points don’t clear that bar.
Refinance proceeds get traced, not assumed. This causes the most confusion for investors who refinance one rental to fund the next one. Here’s the rule. When you refinance for more than your old balance, the interest on the new proceeds is deductible only if those proceeds went toward the rental activity. The IRS gives this example. You refinance a $100,000 balance into a $120,000 loan. You use the extra $20,000 to buy a car. The interest on that $20,000 is nondeductible. Now swap the car for a down payment on another rental. That same $20,000 slice of interest stays deductible as investment-property interest. The test follows the cash, not the collateral. This is exactly where a cash-out refinance on an existing rental needs a clean paper trail. These are business-purpose loans, so they generally fall outside TRID’s consumer closing-disclosure rules. Investors should instead keep the settlement statement and wire records showing where the cash-out proceeds actually went.
Unamortized points on a refi depend on who holds the new loan. Refinance with the same lender, and the remaining points from your old loan keep amortizing over the new loan’s term. You don’t deduct them all at once. Refinance with a different lender, and those leftover points from the old loan are usually deductible in full, in the year you pay off the old loan. Plenty of investors never claim this — simply because nobody told them.
Closing costs to originate the loan get capitalized, not deducted. Mortgage commissions, abstract fees, and recording fees aren’t interest at all. They’re capital expenses added to your basis in the property. You recover them later through depreciation or at sale. You don’t write them off as a current-year expense.
Where the Confusion With “Investment Interest Expense” Comes From
Search results for this question often mix up two different tax doctrines. Let’s separate them clearly. Investment property loan interest — the topic here — is a rental-business expense reported on Schedule E, with no dollar cap. Investment interest expense is a different animal entirely. It’s interest on money borrowed to buy securities, usually on margin. You report it on Schedule A using Form 4952, and it’s limited to your net investment income for the year. These two terms overlap in search results. They share almost nothing else.
| Loan Type | Where It’s Deducted | Debt Cap | Governing Concept |
|---|---|---|---|
| Primary/second home mortgage | Schedule A (itemized) | $750,000 acquisition debt | IRS home mortgage interest rules |
| Rental/investment property loan | Schedule E | No dollar cap — tracing rule applies | Publication 527 |
| Margin loan (securities) | Schedule A, Form 4952 | Capped at net investment income | Investment interest expense rules |
If you’re financing a rental property, the middle row is your answer. The other two rows explain why a quick search on this topic often turns up results that seem to contradict each other.
Does the Loan Type — DSCR, Conventional, or Otherwise — Change Anything?
No. The IRS doesn’t distinguish by loan program. A DSCR loan, qualified purely on the property’s rent-to-payment coverage, gets the exact same Schedule E treatment as a conventional mortgage underwritten on the borrower’s traditional personal-income paperwork. What changes is a regulatory classification, not a tax one. A DSCR loan on a non-owner-occupied rental is typically treated as a business-purpose loan under the Consumer Financial Protection Bureau’s Regulation Z. That classification exempts it from certain consumer-lending disclosures. It’s a coverage question for lenders. It’s not a deduction question for the IRS.
Lendmire (NMLS# 2371349) arranges DSCR investor loans through a wholesale lending network spanning 39 states plus Washington, D.C. — 40 markets total. The tax mechanics above apply the same way no matter which lender in that network ends up holding the file. Across the DSCR files that move through that network, purchase leverage on most programs lands around 75%-80% LTV. A smaller group of high-leverage programs reaches up to 85% for borrowers with stronger credit profiles, generally around 700 or higher. A coverage ratio of 1.00 means rent equals the full payment obligation. That’s where select programs start, not a universal floor across the industry. Stronger coverage tends to open better leverage and pricing. None of that leverage or coverage math changes what the IRS allows on the interest itself. Review details still depend on lender overlays, credit profile, reserves, and property type — worth confirming before you assume a specific structure applies. For a fuller look at how those thresholds get set, Lendmire’s investment property loan rules breaks down eligibility in more depth.
Where the General Rule Breaks Down: Six Edge Cases
1. The 163(j) business interest limitation rarely touches small rental portfolios. If your rental activity rises to the level of a trade or business, a federal cap on deductible business interest can apply. But a small-business exemption covers operations with average gross receipts around $31 million or less over the prior three years, according to Carr Riggs & Ingram’s analysis of the current thresholds. A typical individual investor holding one to twenty properties sits nowhere near that scale.
2. Larger operators can elect out of 163(j) — but the trade-off is slower depreciation. A real property trade or business can make a Section 163(j)(7) election to escape the limitation entirely. Here’s the cost. Electing operations must depreciate real property using the alternative depreciation system instead of the general one. That stretches nonresidential real property from 39 years to 40. It stretches residential rental property from 27.5 years to 30, according to Weaver’s breakdown of the election mechanics. You trade full interest deductibility for a longer depreciation runway. That’s a real modeling decision once a portfolio nears that gross-receipts threshold.
3. Some rentals may sit outside 163(j) automatically. Rental activity that doesn’t rise to a “trade or business” often falls outside the limitation from the start. A net lease arrangement is the classic example. Whether this applies depends on the facts of the arrangement. Because that line is fuzzy, some investors make a protective 163(j)(7) election anyway. That way, the exception holds even if the IRS later decides the activity was a trade or business.
4. Deductible interest can still get trapped by passive activity loss rules. This edge case surprises the most investors. Interest is deductible against rental income — that part is settled. Whether the resulting loss can offset other income, like your salary, is a separate question entirely. If you actively participate in the rental, a special allowance lets you deduct up to $25,000 of that loss against nonpassive income. But it phases out fast. The allowance drops by 50 cents for every dollar of modified adjusted gross income above $100,000. It disappears completely above $150,000. The IRS gives this example. An unmarried investor earns $120,000 in salary and has a $31,000 rental loss. She can deduct only $15,000 that year. She carries the remaining $16,000 forward.
5. Real Estate Professional status removes the phase-out — for those who qualify. The bar is strict. You need to spend more than half your working time, and more than 750 hours a year, materially participating in real property trades or businesses. Clear that bar, and your rental losses can offset other income without the $25,000/$150,000 ceiling.
6. Personal-use days shrink the deduction back toward Schedule A limits. Mix personal use into a rental — a common issue with short-term rentals where the owner also stays there — and only the rental-use portion of expenses, including interest, is deductible against rental income. The personal-use share of mortgage interest may still be deductible on Schedule A if you itemize. But it follows that schedule’s own separate rules, not Schedule E’s.
Structuring the Loan With Tax Consequences in Mind
A rental investor’s interest deduction is usually the single largest annual write-off on the file. There’s no dollar cap the way there is on a primary home, so the deduction scales with the loan size instead of getting capped by it. That’s a meaningful difference for anyone comparing a rental purchase to a home purchase for the first time — worth a closer look in Lendmire’s guide for a first investment property loan.
Loan structure choices aren’t tax-neutral. A loan with more points and different terms spreads that point cost over the life of the loan instead of letting you deduct it right away. That changes the year-by-year picture, even when the lifetime total looks similar. An interest-only structure — available through select lenders in Lendmire’s network — maximizes the interest line and the paper loss each year. That can matter for an investor weighing whether to pay down the loan faster or lean into the deduction. But whether you can actually use that loss depends entirely on the passive activity rules above.
Entity choice doesn’t change whether interest is deductible. It changes who reports it and how. DSCR loans commonly close in an LLC’s name, subject to lender program eligibility. But LLCs taxed as disregarded entities or partnerships remain pass-through for federal tax purposes. So the Schedule E mechanics still flow to the individual member’s return. This pass-through structure has become more common across the industry. The share of rental properties owned by non-individual investors rose from 18% to 27% between 2001 and 2021, according to Harvard’s Joint Center for Housing Studies. Nationally, individual investors still own the majority of rental stock — 70.2% — with LLPs, LPs, and LLCs together holding 15.4%, according to the Congressional Research Service’s analysis of the 2021 Rental Housing Finance Survey.
What’s Never Deductible
- The loan principal — every payment’s principal portion, no matter the loan type.
- The full points amount in year one on most rental loans — it amortizes instead.
- Interest tied to loan proceeds spent on something other than the rental activity, once traced.
- Mortgage-related closing costs like commissions, abstract fees, and recording fees — these get capitalized into basis, not deducted.
- The personal-use portion of interest on a mixed-use property, under Schedule E specifically.
Tax treatment depends heavily on how you use the loan funds and how the property is titled and held. None of this replaces a conversation with a qualified tax professional who can look at your actual return.
If you’re buying or refinancing a rental property and want to see how the leverage, coverage ratio, and program fit line up, Lendmire can help compare DSCR loan options based on the property’s income, your credit profile, and your goals. Reach Lendmire at 828-256-2183 or through a pricing quote request.
Nothing here is a commitment to lend, and loan approval is never guaranteed — every scenario described is general information subject to lender approval and to the specific borrower, property, and program guidelines in place at the time of application. This article is provided for general informational purposes only and should not be treated as financial, legal, or tax advice; investors should confirm current program details with Lendmire and consult a qualified tax professional before relying on any deduction.
Frequently Asked Questions
Is an investment property loan tax deductible?
The interest is deductible against rental income on Schedule E. The loan principal is not. This holds true whether the loan is conventional, portfolio, or DSCR. The IRS bases the treatment on how you use the property and the borrowed funds, not on the loan program.
Can I get an investment property loan if I qualify on the property’s rent instead of my personal income?
Yes — that’s the core idea behind a DSCR loan. Instead of pay stubs and traditional personal-income paperwork, the lender compares the property’s rent against its own payment obligation. Select programs start around a 1.00 coverage ratio, and stronger ratios generally unlock better leverage, subject to lender guidelines and credit profile.
How do I get an investment property loan without traditional employment income documentation?
A DSCR program is usually the answer. It’s underwritten mainly on the property’s income, not your personal pay documentation. Credit still matters. Most programs across Lendmire’s network look for scores around 660, though a lower floor is available on some files. Stronger leverage is reserved for borrowers around 700 or higher. Reserves commonly run near six months of the property’s payment obligation.
Does refinancing my rental to pull cash for a down payment on another property kill my interest deduction?
No — it traces the deduction rather than killing it. The IRS follows where the cash actually went. Proceeds used to acquire another rental generally remain deductible as investment-property interest. Proceeds spent on something unrelated to rental use would not be. Keeping clean records of where the funds landed is what backs up that distinction.
If my rental shows a loss after deducting interest, can I use it against my salary?
Only within limits. A rental loss is generally treated as passive. Even hands-on landlords are capped by a special allowance of up to $25,000, which phases out between $100,000 and $150,000 of modified adjusted gross income. The exception: an investor who qualifies as a real estate professional under a strict hours test. The interest deduction itself isn’t affected. Whether you can use the resulting loss right now is the separate question.
About Lendmire
Lendmire is a non-QM mortgage broker (NMLS# 2371349) that arranges DSCR investor loans across 40 markets, including Washington, D.C. DSCR eligibility is generally reviewed around property-level rental income instead of personal income documentation, subject to lender guidelines. Lendmire serves LLC-structured portfolios and self-employed borrowers who don’t fit conventional boxes. It’s a two-time Scotsman Guide Top Mortgage Workplace, recognized in 2025 and 2026.
Lendmire’s Top Mortgage Workplace recognition is documented by Scotsman Guide 2025 Top Mortgage Workplace and Scotsman Guide 2026 Top Mortgage Workplace.
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References
1. CFPB Regulation Z, § 1026.3 Exempt Transactions
2. Carr Riggs & Ingram, “Real Estate Section 163(j) Tax Planning”
3. Weaver, “Considerations for Real Estate Electing Real Property Trade or Business”
5. Congressional Research Service, “Ownership of the U.S. Rental Housing Stock by Investor Type”
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.
