Second mortgage business loans behind your existing bank

A common bank decline goes like this. You have a home or commercial property with a sensible loan against it and plenty of equity above that. The business needs funds. You ask the bank to increase the loan, and it says no: maybe because of an ATO balance, a default, late lodgements or simply its business-lending policy. Refinancing the whole property elsewhere would mean giving up a first mortgage you’re otherwise happy with.

A second mortgage lets you leave that first mortgage alone.

How does a second mortgage business loan work?

A second mortgage is registered on the property’s title behind the existing first mortgage. If the property were ever sold, the first lender is repaid first and the second lender next. Because of that order, the second lender focuses on the equity buffer: the gap between the property’s value and what’s owed to the first lender.

	First mortgage	Second mortgage
Who holds it	Your existing bank or lender	A specialist or private lender
Priority on sale	Repaid first	Repaid after the first
Changes to it	None, it stays as is	New loan for the business
Typical term	Long	Often shorter, with a planned exit

Property-secured business loans, including second mortgages, run from $20,000 to $5,000,000 over residential or commercial property.

When does a second mortgage make sense?

It tends to fit when:

• The first mortgage is on good terms and you’d rather not disturb it.
• The bank won’t lend more, but there’s clear equity.
• The business need is defined: clearing ATO debt, paying out expensive short-term loans, funding a contract or bridging to a sale.
• There’s a realistic exit, such as refinancing once lodgements are up to date, selling an asset, or repaying from a known cash inflow.

It fits less well when the need is ongoing and there’s no clear way to repay. In that case, a longer-term solution may be better, and we’ll say so.

If a second mortgage sounds right, start a 60-second enquiry and tell us about the property. There’s no credit check when you first enquire.

What does the second lender check?

1. The property: value (often by independent valuation), location and type. Unusual property is possible; see business loans on unusual security.
2. The first mortgage: current balance, arrears if any, and whether its terms require consent for a second mortgage.
3. The business purpose and how the funds will be used.
4. The exit: how and when the second mortgage will be repaid.
5. Credit history, weighed case by case. Equity and exit usually count for more.

Financials help, but aren’t always essential for the initial assessment. If lodgements are behind, see loans with overdue lodgements.

Second mortgage or caveat loan?

Both let you borrow behind an existing lender. The difference is in how the lender’s interest is protected and how long the loan usually lasts. A second mortgage is a full registered mortgage and suits somewhat longer terms. A caveat loan relies on a caveat lodged on the title and is typically shorter and simpler to put in place. Our page on caveat loans for difficult situations compares them in more detail.

What should I watch out for?

• Consent. If your first mortgage needs the bank’s consent, allow time for it.
• Costs. A second mortgage from a specialist lender will usually cost more than your bank loan. Compare it with the cost of the problem it solves, not with the first mortgage.
• The exit. Write down how you’ll repay it and when, before you sign.
• Cross-default. Falling behind on either loan can affect the other, so budget for both repayments.
• Future borrowing. While the second mortgage is in place, the bank may be less willing to extend the first. Plan the order in which you want to unwind things.

The Reserve Bank’s October 2025 Bulletin found that the non-bank share of small business lending has grown strongly since 2022, so second-mortgage lenders are more established and varied than many owners expect.

Illustrative example: keeping a good home loan

Illustrative only, not a real client. A physiotherapy practice owner in Perth has a home loan with plenty of equity above it. The practice fell behind on BAS after a key clinician left, and the bank declines a business top-up. She doesn’t want to refinance her home loan, which is on terms she’s happy with.

A specialist lender registers a second mortgage behind the bank, pays out the ATO balance at settlement and provides a working-capital buffer while a new clinician builds a client list. The exit is a refinance with the bank once twelve months of clean BAS lodgements are on record.

Equity sitting idle? Let’s put it to work for the business.

Second mortgages behind a bank are regular work for us, often for owners the bank has only just declined. A minute on the form, no credit check when you first enquire, and no lender list waiting at the other end. A specialist looks at the property and your plan, then calls you.

Please include an honest estimate of the property’s value and what’s owing on it. That’s what lets us match you correctly the first time. See if you qualify →