Refinancing an investment property opens up several tax deductions beyond the ongoing mortgage interest: amortized points and loan fees on the new loan, any unamortized points still sitting on the old loan, prepayment penalties, and interest on cash-out proceeds when you spend that money on the property itself. The rules for investment property refinance tax deductions differ from those for a primary residence in ways that catch owners off guard, especially around points and cash-out proceeds.
Interest on the New Loan
Mortgage interest on a rental property is a business expense. It offsets rental income dollar for dollar and gets reported on Schedule E, Line 12.1Internal Revenue Service. Schedule E (Form 1040) – Supplemental Income and Loss The underlying authority is the interest deduction in the tax code, which treats interest on indebtedness as deductible.2Office of the Law Revision Counsel. 26 USC 163 – Interest
If your refinance simply replaces the old balance without pulling cash out, nothing about the deduction changes. Your lender sends Form 1098 in January showing the total interest paid, and that number flows straight to Schedule E. The figure may need adjusting if you took cash out and used part of it for non-property purposes, which is covered below.
Points and Origination Fees Must Be Amortized
On a primary residence, points paid to buy down the rate are often deductible in the year you close. On an investment property refinance, that upfront cost has to be spread evenly across the entire loan term.3Internal Revenue Service. Topic No. 504, Home Mortgage Points Divide the total points by the number of months in the loan and deduct that amount each month.
A $3,600 point charge on a 30-year mortgage works out to $10 per month, or $120 a year. Origination fees like underwriting and processing charges from the lender follow the same treatment. The annual amounts are small, but they’re easy to forget in later years, and they add up over the life of the loan.
Unamortized Points From the Old Loan
This is the deduction most investors miss. If you were amortizing points on your previous mortgage and still had an unamortized balance when the refinance paid it off, the remaining amount becomes fully deductible in the year of the refinance.
Say you paid $4,000 in points on the original 30-year loan and refinanced after 10 years. You’d already deducted roughly $1,333 across those 10 years, leaving about $2,667 unamortized. That $2,667 is deductible in the year you close the new loan.
One caution: if you refinance with the same lender, review whether the transaction is a new loan or a modification of the existing one, because a modification may not trigger the full write-off. Keep documentation showing the old note was satisfied and a new note was executed.
Prepayment Penalties
Paying off the old mortgage early sometimes triggers a prepayment penalty. The IRS treats these penalties as interest, so they’re fully deductible in the year you pay them rather than spread over any loan term.4Internal Revenue Service. Publication 530 – Tax Information for Homeowners A 2% penalty on a $300,000 balance creates a $6,000 deduction all at once. Combined with unamortized points from the old loan, a refinance can generate a sizeable write-off in the year it closes.
Find the penalty on the final payoff statement from your old lender. It’s sometimes buried in the line items, and if you overlook it, you lose the deduction.
Cash-Out Proceeds and Interest Tracing
When you refinance for more than you owe and pocket the difference, the deductibility of interest on that extra cash depends on what you do with the money. The IRS uses interest tracing rules that follow the proceeds from disbursement to final use.
Spend the cash-out on improvements to the rental property, and the interest on that portion stays a fully deductible rental expense. A $30,000 cash-out that pays for a new roof keeps its interest on Schedule E. Use the same $30,000 for a personal vehicle or credit card payoff, and that portion of the interest becomes personal and nondeductible. Mixed use splits proportionally: half to repairs and half to personal spending means only 50% of the interest on the extra amount is deductible against rental income.
The tracing rules were formerly published in IRS Publication 535, which has since been discontinued, though the underlying rules in the tax code haven’t changed.5Internal Revenue Service. Guide to Business Expense Resources The practical move is to deposit cash-out proceeds into a separate bank account and spend them in a documented, traceable way. Commingling with personal money invites a fight with an auditor over allocation.
Closing Costs That Aren’t Deductions
Not everything on the settlement statement produces a deduction. At an original purchase, costs like title insurance, recording fees, transfer taxes, and legal fees get added to the property’s cost basis, reducing your taxable gain when you eventually sell.6Internal Revenue Service. Rental Expenses7Internal Revenue Service. Publication 551 – Basis of Assets
At a refinance, the picture changes because you aren’t acquiring new property. Title insurance and recording fees paid during the refinance don’t get added to basis the way they would at purchase. These are generally treated as non-deductible loan expenses. What you can deduct or amortize is limited to costs tied directly to obtaining the financing itself: origination fees, discount points, and similar lender charges. On your records, keep a clean line between what the lender charged you and what the title company or county recorder charged you, because the treatment is different.
Passive Activity Loss Limits
These deductions can stack up to the point where your property shows a net loss on paper even while cash is flowing in. Before assuming that loss offsets your salary, run it through the passive activity rules. Rental income is passive for most investors, and passive losses generally can only offset other passive income.
There’s an exception for landlords who actively participate in managing their rentals. If your modified adjusted gross income is $100,000 or less, you can deduct up to $25,000 in rental losses against non-passive income. That allowance phases out by 50 cents for every dollar of income above $100,000 and disappears entirely at $150,000. Above that threshold, the losses aren’t gone; they suspend and carry forward, becoming usable when the property is sold or when other passive income arrives.
Real estate professionals who spend more than 750 hours per year in real property activities and meet the material participation tests can escape the passive classification entirely, making rental losses fully deductible against any income. That’s the exception rather than the norm, but it changes the math for those who qualify.
Records to Keep
Every deduction above depends on producing the right paperwork. At minimum, hold onto the HUD-1 or Closing Disclosure from both the old payoff and the new loan, Form 1098 for every year you claim interest, a ledger tracking cash-out proceeds and how you spent them, and the amortization schedule for your annual points deduction. If you put cash-out funds into a separate account, keep those bank statements too.
The IRS can audit rental returns for three years after filing, or six years if there’s a substantial understatement of income. Because basis at sale depends on costs incurred years or decades earlier, keeping records for the full ownership period is the safer approach.