Hand holding house keys, representing property used as security for a business loan

Loan options · Second mortgages

Second mortgage business loans: borrowing against equity without refinancing

A second mortgage business loan lets you borrow against property equity without touching your first mortgage. How private second mortgages work.

Updated 25 October 2026 · Alternative Business Loans editorial team

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Quick answer

A second mortgage business loan is secured by registering a second-ranking mortgage over a property that already has a first mortgage. Your existing home loan stays in place, and the private lender relies on the remaining equity. Second mortgages suit business owners who need $20,000 to $5,000,000 quickly, who've been declined elsewhere, or who don't want to refinance a good first mortgage.

Key points

  • Your first mortgage stays exactly as it is.
  • The private lender sits behind the first lender, so it relies on remaining equity.
  • Often used for tax debt, consolidation, growth or urgent needs.
  • Usually needs the first lender's consent; a caveat loan is the alternative when it doesn't.
Range
$20k – $5m
Typical term
Months to a few years
First mortgage
Stays in place
Credit check to enquire
None

For many Australian business owners, the biggest asset they have isn’t in the business at all. It’s the equity in their home or an investment property. A second mortgage lets you put that equity to work for the business without unpicking the home loan you already have. When the bank has said no, or the timing doesn’t allow a full refinance, a private second mortgage is often the most practical way forward.

How a second mortgage works

You already have a first mortgage with your bank. A private lender lends against the remaining equity and registers a second mortgage behind the bank’s. If the property were ever sold, the first lender would be repaid first, then the second. Because the second lender ranks behind, it looks carefully at how much equity is left and how you’ll repay.

First mortgage Second mortgage
Lender Usually your bank A private or specialist lender
Priority Repaid first Repaid after the first
Typical term Long, often decades Shorter, months to a few years
Assessment Full income, credit and serviceability Equity, exit and the story
Stays in place? Yes Repaid or refinanced at the end of term

Why business owners choose second mortgages

  • Speed. Private lenders can decide quickly, and second mortgages can settle much faster than a full refinance.
  • Keep the home loan. No need to break a fixed rate or restart a long refinance process.
  • Credit flexibility. Bad credit, ATO debt or a bank decline is less of a barrier.
  • Larger amounts. From $20,000 up to $5,000,000, depending on equity.
  • Business purposes. Tax debt, consolidation, stock, equipment, a business purchase, working capital.

Common uses

Use Example
Clear an ATO debt Pay the tax in full and stop escalation. See ATO debt.
Consolidate stacked loans Replace daily-repayment loans with one. See too much existing debt.
Fund growth A second site, a big contract, new equipment
Bridge a gap Until a sale, a refinance or a big payment lands
Settle a purchase A business, premises or a partner buy-out

Most first mortgages require your bank’s consent before another mortgage is registered on the title. The private lender or its lawyers usually request this. Banks don’t always say yes, and they can take time. If consent isn’t available or will be too slow, a caveat loan may be an alternative, because it doesn’t always need the same consent. Your lender will check your mortgage terms and recommend the right path.

What lenders assess

  • The property’s value, location, type and condition
  • What’s owing on the first mortgage, and whether repayments are up to date
  • The purpose of the business loan
  • How it will be repaid at the end of the term
  • Your credit history and any other debts, considered in context

Costs to understand

Second mortgages generally cost more than first mortgages, because the lender ranks second. We don’t publish rates. Ask for every fee in writing, including establishment, legal, valuation and any monthly fees, and how interest is charged. Ask what happens if you repay early or need to extend. Then compare the total cost in dollars with the problem you’re solving or the opportunity you’re funding.

An illustrative example

A Hobart freight and storage business (illustrative only) had a bank declining it because of an ATO payment plan and a recent loss year. The owners needed $350,000 to clear the tax, pay out two short-term loans and buy a forklift. Their home had a bank mortgage with a good fixed rate and plenty of equity behind it. A private lender approved a two-year second mortgage, with the bank consenting. The tax and loans were paid at settlement, and the owners planned to refinance once two clean years of financials were lodged.

Business owners often hold property in a different name to the business, such as personally, jointly with a spouse, in a family trust or a separate company. That’s normal, and second mortgages can be structured around it. The property owner gives the mortgage, and usually a guarantee, to support the business borrower. Every owner and guarantor will need to sign, and lenders generally require independent legal advice for anyone who is guaranteeing a loan they won’t directly benefit from. Plan for this early, because a co-owner who isn’t across the deal is one of the most common reasons settlement is delayed.

Plan your exit from day one

Second mortgages are best treated as a bridge, not a destination. Common exits include refinancing to a bank or cheaper lender once your file improves, selling a property, or paying down from business profits. Agree the term with the exit in mind, and keep repayments perfect; a clean record on the second mortgage is often what gets you back to cheaper finance.

Put your equity to work

If you own property and the bank won’t help, start a 60-second enquiry. There’s no credit check when you first enquire, your details aren’t shopped around, and a real person will tell you what’s possible against your equity. Please be accurate about the property’s value and what’s owed on it on the form so we can match you to the right lender first time. See if you qualify.

Frequently asked questions

Why not just refinance the first mortgage?

Refinancing can take weeks, may need clean credit and full financials, and might mean giving up a good rate or fixed term on your home loan. A second mortgage leaves that loan alone and adds a separate, usually shorter facility for the business need.

Does my first lender have to agree?

Often, yes. Many first mortgages require the lender's consent before a second mortgage is registered. The private lender usually handles the request. If consent isn't available, a caveat loan may be an option.

How much can I borrow?

It depends on the property's value, what's owed on the first mortgage, the property type and location, and your exit. Lenders lend a portion of the available equity, not all of it.

What happens if I can't repay?

The second mortgage lender can take action to recover the debt, which can include selling the property, after the first mortgage is repaid. That's why the exit plan matters and why you should only borrow what you can realistically repay.

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