You can leverage a rental property to buy another by pulling equity out of the one you own or by trading up through a tax-deferred exchange. The four practical routes are a cash-out refinance, a home equity line of credit or second mortgage, a debt service coverage ratio (DSCR) loan, and a 1031 exchange. Each has different qualification rules, timing, and tax consequences, and investment property terms are meaningfully stricter than anything you’ve seen borrowing against a home you live in.
Cash-Out Refinance on the Existing Rental
A cash-out refinance replaces your current mortgage with a larger one and pays you the difference at closing. On a single-unit investment property, Fannie Mae caps the loan-to-value ratio at 75%, and at 70% for two-to-four-unit properties.1Fannie Mae. Eligibility Matrix On a rental appraised at $400,000, the ceiling is a $300,000 loan. If you still owe $200,000, roughly $100,000 comes back to you before closing costs, and that’s the down payment or all-cash offer you carry into the next deal.
Timing is the trap. Fannie Mae requires your existing first mortgage to be at least 12 months old, measured note date to note date, before a cash-out refinance, and you must have been on title for at least six months when the new loan disburses.2Fannie Mae. Cash-Out Refinance Transactions Buying a rental and pulling cash out a few months later is not on the table. Plan for a year of ownership before this option opens.
The new loan typically carries a fixed rate over a 15, 20, or 30-year term.3Freddie Mac Single-Family. Cash-out Refinance Because it restructures the whole debt, the payment on the existing property changes immediately and stays changed for the life of the loan. Run those numbers before you fall in love with the equity you’re extracting.
HELOC or Second Mortgage
A home equity line of credit on an investment property works like a revolving account. You draw what you need, pay interest only on the balance in use, and reuse the line as you pay it down. That flexibility is useful when you don’t yet know the exact acquisition cost. Rates are typically variable, so your cost of capital moves with the market.
A home equity loan, sometimes called a second mortgage, gives you a fixed lump sum with its own payment while your first mortgage stays in place. Both products generally carry higher rates than a cash-out refinance because the second-position lender takes on more risk, and fewer lenders offer either against a rental. Expect to shop.
DSCR Loans
Debt service coverage ratio loans underwrite the property, not you. Instead of digging through your personal tax returns, the lender asks whether the rental income covers the debt payments. A DSCR of 1.0 means the property’s income exactly matches the mortgage; most lenders want a cushion above that, with the specific ratio varying by lender, property type, and market.
DSCR loans tend to price higher than conventional financing, but they’re valuable for self-employed investors or anyone whose returns show suppressed income because of aggressive depreciation. If the paper income doesn’t match the cash flow, this is often the path that closes.
1031 Exchange Into a Replacement Property
If you’d rather sell the existing rental and roll the proceeds into a new one without triggering capital gains tax, a 1031 exchange defers the tax by swapping one investment property for another. The replacement must also be held for investment or business use.4Office of the Law Revision Counsel. 26 USC 1031 – Exchange of Real Property Held for Productive Use or Investment This isn’t leverage in the debt sense, but it’s one of the most effective ways to move up to a higher-value asset without losing a chunk of your gains to taxes.
You can never touch the sale proceeds. A qualified intermediary holds the funds in a segregated account from the moment the old property closes until the replacement purchase is finalized. Even constructive receipt of the money disqualifies the exchange and triggers the tax.4Office of the Law Revision Counsel. 26 USC 1031 – Exchange of Real Property Held for Productive Use or Investment
The Deadlines
You have 45 days from the transfer of the relinquished property to identify potential replacements in writing. The whole transaction must close within 180 days of the transfer, or by the due date of your tax return for that year including extensions, whichever comes first.4Office of the Law Revision Counsel. 26 USC 1031 – Exchange of Real Property Held for Productive Use or Investment Neither deadline stretches for the usual delays.
During the 45-day window, the three-property rule lets you identify up to three replacement properties regardless of value. If you need more than three, the 200% rule caps the combined fair market value of everything identified at twice the value of the property you sold. Miss the window, miss the identification limits, or miss the closing deadline, and the deferral collapses into a taxable sale.
A few things don’t qualify: your personal residence, land held primarily for resale like a fix-and-flip, and property outside the United States when the relinquished property was domestic.4Office of the Law Revision Counsel. 26 USC 1031 – Exchange of Real Property Held for Productive Use or Investment
What You Have to Qualify For
Investment property underwriting is stricter across the board than what you’d meet on a primary residence loan. Before you apply, look at the numbers below and see where you land.
Credit Scores
Credit floors depend on the LTV you’re seeking. Above 75% LTV, you need at least 680 for a single-unit property and 700 for multi-unit. At 75% LTV or below, the floor drops to 640 and 680 respectively.1Fannie Mae. Eligibility Matrix A score of 720 or higher generally unlocks the best rates, so qualifying and getting competitive terms are two different things.
Debt-to-Income
Below 36% DTI, reserve requirements are lighter. Push past 45% and lenders require additional liquid reserves on cash-out refinances.1Fannie Mae. Eligibility Matrix The extra reserves aren’t trivial, and this catches investors who are stretching to qualify.
Rental Income Counted for Qualifying
Lenders count rental income toward your qualifying ratios, but not all of it. Fannie Mae applies a 25% haircut, using only 75% of gross monthly rent to account for vacancy and maintenance.5Fannie Mae. Rental Income If a property produces $2,000 a month, only $1,500 counts. Model your next acquisition on those numbers, not the gross rent.
Cash Reserves
For any investment property transaction, Fannie Mae requires at least six months of principal, interest, taxes, insurance, and association dues in liquid reserves.6Fannie Mae. Minimum Reserve Requirements If your monthly carrying cost is $1,800, that’s roughly $10,800 sitting in accessible accounts after closing.
If you already own other financed properties, additional reserves stack on top, calculated as a percentage of the total unpaid balance across all your other mortgages (excluding the subject property and your primary residence):
- One to four financed properties: 2% of the aggregate unpaid principal balance
- Five to six financed properties: 4% of the aggregate unpaid principal balance
- Seven to ten financed properties: 6% of the aggregate unpaid principal balance
Fannie Mae permits up to ten total financed properties through its Desktop Underwriter system, with reserve and credit requirements tightening considerably beyond six.6Fannie Mae. Minimum Reserve Requirements
LTV When You’re Buying, Not Refinancing
The purchase-money side is more generous than the cash-out side. On a single-unit investment purchase, maximum LTV reaches 85% through Desktop Underwriter.1Fannie Mae. Eligibility Matrix Combined with equity extracted from the existing rental, that’s often what makes the second acquisition possible.
Tax Side That Changes the Math
Interest Deductibility
When you borrow against a rental and use the proceeds to buy another investment property, the interest is generally deductible as a rental or investment expense, not under the personal home mortgage rules. The IRS traces interest based on how the loan proceeds were actually used, not on which property secures the loan.7Internal Revenue Service. Instructions for Schedule E (Form 1040) If you pulled $100,000 from a cash-out refinance on Property A and used it as a down payment on Property B, the interest on that $100,000 typically follows Property B onto Schedule E.
This is different from primary residence rules, where home equity loan interest is only deductible if the funds were used to buy, build, or substantially improve the home securing the loan.8Internal Revenue Service. Publication 936 – Home Mortgage Interest Deduction Investment real estate has more flexibility here, and that flexibility is one reason leveraging an existing rental is more tax-efficient than borrowing against your house to invest.
Capital Gains and Depreciation Recapture
If you sell rather than exchange, two layers of federal tax apply. Long-term capital gains on the appreciation are taxed at 0%, 15%, or 20% depending on your taxable income. For 2026, the 20% rate begins at $545,500 for single filers and $613,700 for married filing jointly.
The piece that surprises investors is depreciation recapture. Every year you claimed depreciation, the IRS was letting you reduce taxable income against the property’s cost. At sale, those deductions are recaptured and taxed at a maximum rate of 25%, separate from and in addition to the capital gains tax on appreciation.9Internal Revenue Service. Topic No. 409 – Capital Gains and Losses On a property held 15 years, recaptured depreciation can be a six-figure liability. This is a big part of why a 1031 exchange looks attractive when the alternative is a straight sale.
Net Investment Income Tax
High-income investors owe an additional 3.8% net investment income tax on rental income and gains from property sales. It applies to the lesser of your net investment income or the amount your modified adjusted gross income exceeds $200,000 for single filers or $250,000 for married filing jointly.10Internal Revenue Service. Topic No. 559 – Net Investment Income Tax Fold that surcharge into your projected holding-period return before you commit.
Don’t Call It a Primary Residence
Investment property loans price higher than owner-occupied loans, and that spread tempts some borrowers to claim they’ll live in a property they intend to rent. That’s occupancy fraud, and it’s a federal crime. Making false statements on a loan application can bring fines up to $1,000,000 and up to 30 years in prison.11Office of the Law Revision Counsel. 18 USC 1014 – Loan and Credit Applications Generally
Federal prosecutors rarely pursue individual borrowers unless the fraud is part of a larger scheme, but the lender’s own enforcement is common. If a lender catches the misrepresentation, it can accelerate the entire loan balance, demanding full repayment even if you’ve never missed a payment. Non-payment triggers foreclosure, loss of equity, and a default on your credit report for seven years. The lender may also re-underwrite the loan under investment property standards and retroactively charge the higher rate. Flagged borrowers end up in industry databases that make future mortgage approvals difficult. The rate savings are not worth the exposure.