Second Mortgage vs Cash-Out Refinance on a Rental Property

You can pull equity out of a rental two ways. A cash-out refinance replaces your whole loan with a bigger one. A second mortgage adds a loan behind the one you have. The choice comes down to what happens to your first mortgage. New to the product? Start with how a second mortgage on a rental works.

How the two structures differ

• Cash-out refinance: a new loan pays off the old one and hands you the difference. One loan, one payment, one rate on the entire balance. See the glossary entry and our guide to a cash-out refinance on an investment property.
• Second mortgage: a separate loan, either a lump sum or a line of credit, records behind your first. The first stays exactly as it is. Two loans, two payments.

Either way the total debt on the property goes up by the cash you take out. What changes is which dollars carry which rate.

Why the first mortgage is the whole question

A lot of existing mortgages carry a rate set before borrowing costs rose. The FHFA National Mortgage Database showed 50.6% of outstanding closed-end, fixed-rate 1-4 family mortgages carrying a rate under 4% in the fourth quarter of 2025, and 67.4% under 5% (Calculated Risk, reporting FHFA National Mortgage Database data, April 1, 2026, accessed 2026-10-06). That series covers closed-end, fixed-rate 1-4 family mortgages generally, not investor loans specifically, so it does not tell you what your own first looks like. If yours is one of the low ones, a cash-out refinance reprices every dollar of it. A second prices only the new money.

Comparing the two: blended cost

Compare the average cost of your debt after each option, not the rate on the new loan alone. With a second, the average is weighted by balance:

Blended rate = (first balance x first rate + second balance x second rate) / total debt

Here is an example with round numbers. A $400,000 rental has a $180,000 first. At 80% CLTV, total debt can reach $320,000, so a second can be up to $140,000 ($400,000 x 80% = $320,000, minus $180,000). The first is 56.25% of the debt ($180,000 / $320,000) and the second is 43.75% ($140,000 / $320,000). To compare, enter your first mortgage's rate, the second's quoted rate, and the quoted rate on a cash-out refinance of the full $320,000. Our second mortgage program starts from 6.99%, a fixed rate, subject to underwriting. Use real quotes for the cash-out refinance.

The second mortgage calculator does this comparison with the rates you type in. It uses your inputs and none of ours.

Two more costs belong in the comparison:

• The clock. Refinancing into a new 30-year loan restarts amortization. If you were eight years into your first, you start over at year one. A second leaves the first on its existing schedule.
• Prepayment terms. Our second mortgage has a prepayment penalty: 0 to 5 years, subject to underwriting. Ask what a refinance carries.
• Closing costs. Ask each lender for a written estimate of every fee on the loan. Compare the total, not the headline.

When a second mortgage fits

• Your first mortgage has a rate you would not get today.
• You want a defined amount of cash, such as $50,000 to $1,000,000, for improvements or a down payment, not a full refinance.
• You have room under the CLTV limit. See CLTV explained.
• You own several rentals with low-rate firsts. See pulling equity from several rentals.

When a cash-out refinance fits

• Your current rate is not one you want to protect, so reworking the whole balance costs you little.
• You want a single payment.
• The rental is owned free and clear, so there is no first mortgage to keep. USA Mortgage can lend on it in first lien position.
• The cash you need is smaller than a second's minimum. On typical terms a second starts at $50,000. A refinance has its own loan-to-value cap, so check that it leaves the cash you need.

Our DSCR rental loan is one route for refinancing a rental, qualified on the property's rent.

Check two things either way

Permission from your first lender. If you keep your first and add a second, your first mortgage documents may restrict it. The standard 1-4 Family Rider, which Fannie Mae requires on the one- to four-unit investment loans it buys (B8-4-01, accessed 2026-10-06) and which some other lenders also use, bars a junior lien without the lender's written permission. A refinance avoids that question because the old first is paid off.

Subordination later. If you add a second now and refinance the first later, the second-lien holder generally has to sign a resubordination agreement to keep its place behind the new first. A cash-out refinance today does not create that step. A second lien behind a DSCR or conventional first covers that step.

In Texas, also confirm the property is not your homestead. Homestead status turns on use and intent, and Texas limits the liens a homestead can carry. A rental is outside that limit, but title companies check it. This is general information, not legal advice; talk to a Texas real estate attorney.

Business-purpose lending only, on non-owner-occupied investment property. Not a commitment to lend. Terms shown are typical and subject to underwriting.