Using a HELOC to buy a rental

A primary-home HELOC is one of the cheapest sources of a rental down payment. It also stacks two loans on one investment.

Reviewed by Shawn Way, NMLS #1007298★ 4.9 from 111 reviewsUpdated October 28, 2026

The test before you buy

Risks

• Your own home secures the down payment. A vacancy doesn't pause the HELOC payment.
• Lenders count the HELOC payment in your debt-to-income ratio on conventional investment loans.
• Repay the HELOC from cash flow or a later refinance; don't leave it interest-only indefinitely.

Example

A $350,000 rental with 25% down needs $87,500. Drawn from a HELOC at 7.75% APR, interest is about $565 a month. If the rental's PITIA is $1,950 and rent is $2,700, the property clears $185 a month after HELOC interest, before vacancy and repairs. That's thin; a larger rent margin or a faster plan to repay the HELOC would make it safer.

Buy, rehab, refinance

Some investors buy and renovate with HELOC funds, then refinance the rental at its higher value to repay the line. It works when the after-repair value supports a refinance large enough to cover the HELOC draw.

Run the rental side in the DSCR calculator.

A full example with cash flow

A $450,000 rental with 25% down. You draw the $112,500 down payment from your HELOC at 7.75% APR, about $727 a month interest-only. The rental loan is $337,500 at an example 7.25% investment rate, about $2,302 in principal and interest. Add $400 for taxes, $120 for insurance and 8% of rent for maintenance and vacancy.

At $3,400 a month in rent, the property's own costs are about $3,094 (including the maintenance and vacancy reserve), leaving about $306 before the HELOC. The HELOC interest of $727 turns that into a loss of about $421 a month. This deal only works if you can carry that from other income until rents rise or you pay the HELOC down, or if you plan a value-add that lets you refinance and repay the line.

Before you draw

• Run cash flow with the HELOC payment included, not just the rental mortgage.
• Keep reserves of at least six months of both properties' payments.
• Have an exit for the HELOC balance: a refinance after improvements, a sale, or a firm payoff schedule.
• Check that the rental lender allows borrowed down payment funds secured by another property. Most investment lenders do, but they count the HELOC payment in your debts.

Buy, rehab, rent, refinance

Investors often use a HELOC to buy and renovate a property for cash, rent it, then refinance with a DSCR or conventional cash-out loan based on the improved value, and pay the HELOC back. It works when the after-repair value supports a refinance large enough to repay the line. Most lenders want six months of ownership before they'll use the new appraised value.

Mistakes to avoid

• Underestimating repairs and vacancies.
• Drawing the full HELOC for a down payment with no reserves left.
• Assuming you can refinance out quickly; seasoning rules apply.
• Ignoring the HELOC's variable rate in cash-flow projections.

Also asked

Can I use a HELOC on a rental to buy another rental?

Some lenders offer HELOCs on investment properties, usually with combined loan-to-value caps of 70%–75% and higher margins. A DSCR cash-out refinance on the existing rental is another way to pull equity for the next purchase.

More in HELOC guides

• HELOC for a down payment
• HELOC to fund a business
• HELOC for college costs
• HELOC as an emergency fund
• Should you use a HELOC to buy a car?
• Should you use a HELOC to pay for a wedding?
• Should you use a HELOC to invest in stocks?
• Using a HELOC for a home addition

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