Quick answer
A second mortgage business loan is a registered mortgage that ranks behind your existing home or property loan. You keep the first loan exactly as it is and borrow against the equity left over. Private lenders look at the combined debt against the property's value, your purpose and how you'll repay, and can settle in days for amounts from $20,000 to $5,000,000.
Key points
- Your existing mortgage, rate and repayments stay untouched
- The lender registers a mortgage ranking second on title
- Borrowing power comes from combined LVR, not income ratios
- Suits larger amounts or longer terms than a caveat loan
- Loan size
- $20,000 to $5,000,000
- Typical term
- 3 to 24 months
- Ranking
- Second, behind your existing lender
- Speed
- Up to $5m possible within 24–48 hours
Most Australian business owners who own property have a home loan they’re happy with. A good rate, a manageable repayment, maybe a fixed term with a year or two left. Refinancing all of it just to raise $200,000 for the business makes little sense. That’s the job a second mortgage does.
How a second mortgage works
You borrow from a private lender for a business purpose, and the lender registers a mortgage on your property’s title that ranks behind the existing one. If the property were ever sold, the first lender is repaid first, then the second lender, then anything left is yours.
Because the second lender is standing in line behind the first, it pays very close attention to how much equity is left. The key number is combined LVR:
(first mortgage balance + new second mortgage) ÷ property value
Say your home is worth $1,400,000 and you owe $650,000. You want $250,000 for the business. Combined debt would be $900,000, so the combined LVR is about 64%. That’s inside what many private lenders will work with on a well-located home. (This example is illustrative.)
Run your own numbers in the second mortgage calculator.
Why owners choose a second mortgage
The first loan stays put. No refinance, no break costs, no new bank application. Your existing repayments carry on as normal.
It’s built for business problems. Paying an ATO debt, funding a contract, settling a commercial purchase or consolidating expensive short-term debt are all common.
The assessment is about the property and the plan. A second mortgage lender wants to know the security is strong and the exit is real. Income ratios and credit scores matter far less than at a bank.
It can be bigger and longer than a caveat loan. Because the lender holds a registered mortgage, it’s generally comfortable with larger amounts and terms out to around two years.
What the lender will look at
- The property: value, type, location, condition and how quickly it could be sold
- The first mortgage: balance, arrears history and whether the first lender’s consent is needed
- The purpose: what the money is for, confirmed in a business purpose declaration
- The exit: how the loan is repaid, whether that’s a sale, refinance, incoming funds or trading income
- You: identity, any legal proceedings, and an honest picture of your credit history
None of these need to be perfect. They do need to be explained. A file with a known problem and a clear answer to it moves faster than a file with surprises.
Second mortgage vs refinancing everything
| Second mortgage | Full refinance | |
|---|---|---|
| Existing loan | Stays in place | Paid out and replaced |
| Break costs on a fixed rate | None triggered | Possible |
| Speed | Days | Often weeks |
| Paperwork | Focused on the property and exit | Full income and serviceability assessment |
| Best for | Short to medium-term business needs | Long-term restructuring of all debt |
Often the smartest path is a second mortgage now, then a full refinance with a bank once the business problem is solved and the financials catch up. That’s a classic private lending exit.
Costs and what to check
We don’t publish rates, because pricing depends on the combined LVR, the property, the term and the exit. A second mortgage’s cost is built from interest, an establishment fee, valuation, legal costs and registration and discharge fees.
Before you sign, check:
- whether interest is paid monthly, prepaid or capitalised into the loan
- any minimum term or early repayment fee
- what happens if the first lender’s consent arrives late
- default interest and fees if a payment is missed
Our exit plan checker helps you test whether your repayment plan has enough margin.
The risks, stated plainly
A second mortgage is secured against your property. If it isn’t repaid, the lender can enforce its security, and in the worst case the property may be sold. The risk is highest when the exit depends on one event going perfectly, such as a sale at a certain price by a certain date. Build in time and borrow conservatively.
You’ll also be paying two loans at once for the term. Make sure the business can carry that, or that interest is structured so it doesn’t strain cash flow.
See what’s possible on your property
Tell us the property’s value, what’s owed, the amount you need and what it’s for. A person on our Brisbane desk will come back to you quickly with a straight answer on whether a second mortgage, a caveat loan or another structure suits. There’s no credit check when you first enquire, and your details aren’t passed to a crowd of lenders.
Please fill in the form accurately, especially the property and existing loan details, so we can match you properly the first time. Start your enquiry or try the calculator and then send it through.
Frequently asked questions
Do I need my first lender's consent for a second mortgage?
Sometimes. Many first mortgages require the lender's consent before you grant further security, and some second mortgage lenders ask for it as a condition. Others proceed with notice only. We check your existing loan terms early so this doesn't become a surprise near settlement.
How much can I borrow on a second mortgage?
It's driven by combined LVR: the first mortgage plus the new loan, divided by the property's value. Private lenders commonly cap combined lending somewhere between 60% and 80% of value, depending on the property type, location and the lender.
Will a second mortgage break my fixed rate?
No. A second mortgage sits behind your current loan rather than replacing it, so no break costs are triggered on the first loan. That's one of the main reasons owners choose it over a full refinance.
Can I use an investment property instead of my home?
Yes. Investment, commercial and industrial property can all secure a second mortgage. Some owners prefer to keep the family home out of the deal entirely, and that's often possible when there's enough equity elsewhere.
What's the difference between a second mortgage and a caveat loan?
Both sit behind the first lender. A second mortgage is registered as a mortgage, which gives the lender stronger, more durable security and often allows larger amounts and longer terms. A caveat loan is usually quicker to set up and suits shorter, smaller needs.