Quick answer
A second mortgage business loan is a private loan secured on property that already carries a first mortgage. Your existing lender stays in first place and the new loan ranks behind it, so you can release equity for business purposes without refinancing the bank. Amounts run from $20k to $5m, with no formal valuation required.
Key points
- Your bank loan, its pricing and its repayments stay exactly as they are
- Borrow $20k to $5m against the equity behind the first mortgage
- Residential, commercial or industrial property can be offered as security
- Interest can be prepaid or capitalised, so there may be no monthly repayments
- No formal valuation required, which removes a cost and a delay
- Amounts
- $20k – $5m
- Security
- Residential, commercial or industrial property
- Valuation
- No formal valuation required
- Repayments
- Interest can be prepaid or capitalised
Plenty of business owners are asset rich and cash tight at the same moment. The house, the warehouse or the investment unit has grown in value, the bank loan on it is perfectly fine, and yet the business needs money now. A second mortgage lets you borrow against that equity without unwinding the loan you already have.
What is a second mortgage business loan?
A mortgage is a security registered on the title of a property. It gives the lender rights over that property if the loan isn’t repaid. A second mortgage is simply a further mortgage registered over the same title, behind a lender who is already there.
In Torrens title systems, registered interests take priority in the order they are lodged, not the order they are signed. Queensland’s land registry sets that out plainly, and it is the same idea across the country. Your bank lodged first, so it ranks first. The private lender lodges next and ranks second.
That ranking is what makes the product work:
- The first mortgage is untouched. Same lender, same pricing, same repayments.
- The second lender relies on the equity between what the property is worth and what’s owed to the first lender.
- When the property is sold or refinanced, the first lender is repaid first and the second lender next.
If you want the mechanics of priority, consents and what happens on a sale, our page on how second mortgages rank goes into detail.
Why keep your first mortgage instead of refinancing it?
Refinancing the whole debt to a private lender is sometimes the right move, but often it isn’t. If your bank loan is sharply priced, on a long term and in good standing, ripping it up to raise a smaller amount can cost more than it saves.
A second mortgage suits you when:
- the amount you need is modest compared with the bank debt;
- the bank won’t lend more quickly, or won’t lend for this purpose at all;
- the need is short-term, with a clear way to repay;
- you don’t want to pay to discharge a loan you’re happy with.
We compare both paths side by side on the second mortgage vs refinance page.
Does my bank have to agree to a second mortgage?
Often it does, and this is the step most worth starting early. The requirement doesn’t come from the land registry; it usually sits in your bank’s own mortgage terms, which commonly say no further mortgage can be registered without the bank’s written agreement. The Queensland Government’s guidance on refinancing makes the same point for home loans: a second mortgage may need the existing lender’s permission.
What a bank typically wants to know before it consents:
- who the second lender is and how much it’s lending;
- that its own loan stays first and its repayments are unaffected;
- in some cases, a limit on how much the second mortgage can rank for.
Where a bank is slow, a caveat loan can sometimes carry the deal until consent arrives, then convert. Where a bank refuses outright, refinancing everything into one private first mortgage removes the need for its agreement. Our guide to first mortgagee consent covers the paperwork, and the deed of priority entry explains how two lenders can document their positions.
How much can you borrow on a second mortgage?
Second mortgage amounts run from $20k to $5m. The figure available to you depends on three numbers: what the property is worth on our assessment, what’s owing on the first mortgage, and how far behind the first lender we’re comfortable sitting on that property type.
There’s no formal valuation required. Our specialists assess the property themselves, so you save the cost of a third-party report, skip the wait for one, and aren’t stuck with a conservative figure from someone who has never seen the deal.
| Item | Where the number comes from |
|---|---|
| Property worth | Our assessment of the property; no formal valuation required |
| First mortgage owing | A payout or balance statement from your bank |
| Other secured debts | Your title search and loan statements |
| Total lending against the property | Set per deal, by property type and location |
| Second mortgage available | The gap between the two, less a buffer |
Illustrative example: a Brisbane café owner holds an investment townhouse assessed at around $900k, with $450k owing to the bank. Illustrative: if total lending were capped at 70% LVR on that property, total debt could reach $630k, leaving room for a second mortgage of up to about $180k. The bank loan carries on unchanged, and the second mortgage is repaid when the owner refinances in nine months.
You can test your own numbers with the secured borrowing power calculator, which shows usable equity for a first versus a second mortgage.
How much of the second mortgage reaches your business account?
The gross loan and the money you can spend are two different numbers. Interest held back at settlement, the assessment fee and legal costs all come out first, so it pays to start with the amount the business must actually receive and work backwards.
Illustrative example (net funds): a Toowoomba agricultural machinery dealer needs $250k in hand to pay for a shipment of tractors before the selling season. His commercial yard is assessed at around $1.2m and carries $500k of bank debt. Illustrative: at a 65% LVR band, total lending could reach $780k, giving $280k of room behind the bank. If interest for six months is prepaid and the assessment fee and legal costs are deducted at settlement, roughly $30k of that might be absorbed (illustrative figures only, not a quote), leaving about $250k for the business. The plan works, but only just, so the dealer adds his house as a second security to give the deal breathing room.
| Line | Illustrative figure |
|---|---|
| Assessed worth of the yard | $1,200,000 |
| Total lending at the illustrative band | $780,000 |
| Less bank first mortgage (stays in place) | −$500,000 |
| Second mortgage available | $280,000 |
| Less prepaid interest allowance, fee and legal costs | −$30,000 |
| Cash reaching the business | $250,000 |
If the cash figure comes out too tight, the usual fixes are adding a second property, choosing capitalised rather than prepaid interest, or borrowing for a shorter term. The multiple properties as security page explains the first of those.
How does a second mortgage compare with the alternatives?
Before choosing, set a registered second mortgage against the other ways to raise the same money:
| Route | What happens to the bank loan | Typical timing | Strongest when | Main drawback |
|---|---|---|---|---|
| Registered second mortgage (this page) | Stays exactly as it is | Days, plus any consent time | The bank debt is good and the extra need is short-term | Usually priced above a first mortgage |
| Bank refinance or top-up | Replaced or increased | Weeks to months | Long-term borrowing at bank pricing | Full financials and serviceability tests |
| Caveat loan | Stays in place | Often the quickest | A very short, urgent gap | Lapsing processes in some states |
| Bridging loan | Depends on the structure | Depends on the security | A gap until a sale or refinance | Needs a dated, credible event |
| Selling an asset | Discharged from the proceeds | Weeks to months | You’d sell anyway | Costs, possible capital gains tax, timing |
| Unsecured business lending | Untouched | Quick for small sums | Small amounts with strong trading | Smaller limits, frequent repayments |
What do business owners use a second mortgage for?
Because the funds are business-purpose, they cover almost anything the business genuinely needs:
- clearing an ATO debt or catching up overdue BAS;
- paying a supplier deposit or bulk stock order;
- settling on a commercial property before the bank is ready;
- covering a gap between a project finishing and buyers settling;
- buying out a business partner;
- funding a fit-out, new equipment or a second site.
If the money is for a personal purpose, such as a holiday or a family home renovation, this isn’t the right product.
Tax debts deserve a special mention. A director penalty notice gives a company director 21 days to act, and paying the debt in full is one of the ways to have the penalty remitted. Separately, ATO general interest charge incurred on or after 1 July 2025 is no longer deductible, so leaving a balance with the ATO costs more after tax than it used to. Both points push business owners to settle tax debts sooner, and a second mortgage is one way to do it.
Who uses second mortgages?
Some industries lean on second mortgages more than others, usually because their assets are valuable but their cash arrives in lumps:
- Medical and dental practices use them for equipment upgrades and fit-outs, secured behind the practice owner’s home or rooms. See medical and dental practices.
- Manufacturers fund raw materials for a large order against a factory that already carries bank debt. See manufacturing and industrial.
- Accountants, lawyers and consultants fund a partner buyout or a practice purchase without disturbing existing borrowing. See professional services.
- Childcare operators cover a refurbishment or a licensing-driven upgrade between funding cycles. See childcare centres.
- Workshops and dealers pay for stock or equipment against the premises they own. See automotive.
When this isn’t the right move
A second mortgage is a good tool used in the right place. It’s the wrong one when:
- Your bank would lend the extra on its own terms in time. If a top-up from your existing lender arrives before your deadline, it will almost always cost less.
- The extra need is large compared with the bank debt. If you need nearly as much again as you owe, one first mortgage is usually more efficient than two loans, each with its own costs.
- The bank won’t consent and won’t be refinanced. Then a caveat or a different property is the realistic path.
- There’s no believable exit. A second mortgage is short-term money. Without a sale, refinance or payment to repay it, the cost compounds.
- The need is personal. These loans are for business purposes only.
What documents will you need for a second mortgage?
Expect a focused list, mostly about the property and the people who own it:
- photo ID for every registered owner, borrower and guarantor;
- the most recent statement for the first mortgage, plus your bank’s name and loan number so the consent request can go out on day one;
- the latest council rates notice;
- an ASIC company extract or trust deed if an entity owns the property;
- a short explanation of the business purpose, with any supporting invoice, ATO statement or contract;
- evidence of the exit, such as a sale contract, a refinance pre-approval or a payment schedule;
- your solicitor’s or conveyancer’s details.
Our second mortgage checklist turns this into a printable list.
How does the process work, step by step?
- Enquire in about 60 seconds. Tell us about the property, what’s owed on it and what the money is for. There’s no credit check at this stage.
- Talk to a specialist. A real person reviews the deal and calls you to fill any gaps.
- Indicative terms. If it stacks up, you receive terms showing the amount, term and structure.
- Documents and first lender permission. We collect identity, title and loan statements. Many first mortgages require the existing lender’s permission before a further mortgage is registered, so that request goes out early.
- Letter of Offer and settlement. Documents are signed, the mortgage is lodged electronically and funds are released.
Smaller amounts in the $20k–$250k range are possible the same day, and funding within 24–48 hours for up to $5m is possible once documents are in. Our fast second mortgage page covers what speeds a deal up and what slows it down.
Does it matter which state the property is in?
The product works the same way across Australia because every state uses Torrens title and electronic lodgement, but each property is registered with its own state or territory office: NSW Land Registry Services, Land Use Victoria, Titles Queensland, Landgate in Western Australia, Land Services SA, Access Canberra and Land Tasmania. Local detail on auctions, duty and land tax lives on our location pages, including Sydney, Western Sydney and Parramatta, Melbourne, Brisbane, Newcastle and the Hunter and Toowoomba and the Darling Downs.
What does a second mortgage cost (without the guesswork)?
A second mortgage generally costs more than a first mortgage. The reason is straightforward: the second lender is paid only after the first lender is paid in full, so it carries more risk.
There is no rate card here, because there is no standard deal. Pricing is set on each loan’s security, LVR, term and exit, and we aim for the sharpest price your situation allows. A small assessment fee applies, varies per loan and is shown on your Letter of Offer before you sign anything. Your own solicitor’s costs and the government charges to register the mortgage and later discharge it sit alongside that.
Two structural choices can make the loan easier to carry:
- Prepaid interest, where interest for the term is set aside from the loan at settlement.
- Capitalised interest, where interest is added to the loan balance and repaid at the end.
Either way, there may be no monthly repayments during the term. That keeps cash in the business while you work towards the exit. It is arranged deal by deal, so ask when you start your enquiry.
What exit strategies work for a second mortgage?
Every loan needs a clear exit, because private second mortgages are typically shorter-term. The exit is how the loan gets repaid, and it shapes the term from day one.
- Sale of a property, either the security or another asset.
- Refinance to a bank or other lender once the business numbers improve.
- Business cash flow, such as a contract payment or seasonal peak.
- Settlement of a sale already under contract.
A credible exit often matters more than a perfect credit file. Read more in our guide to the exit strategy for a short-term mortgage.
What are the risks, and how do you manage them?
Borrowing behind a bank is safe when it’s planned and uncomfortable when it isn’t. The risks are predictable, and so are the defences:
| Risk | What it looks like | How to manage it |
|---|---|---|
| The exit runs late | A sale drags or a refinance takes longer than the bank promised | Choose a term with slack in it and raise any delay early, while there are still options |
| Two sets of obligations | The bank loan keeps its monthly repayments while the second mortgage runs | Budget for the bank repayments first; prepaid or capitalised interest keeps the second loan from adding another monthly bill |
| A default under the first mortgage | Missed bank repayments can put both lenders on alert | Keep the bank loan current above everything else, and tell us if it’s at risk |
| Less equity than expected | The sale price disappoints or another debt surfaces on the title | Leave a buffer, disclose every debt at the start and check the title search early |
| Using the home | The family home becomes security for a business debt | Consider a commercial or investment property first, and make sure every owner gets independent explanation of the documents |
None of these is a reason to avoid a second mortgage. They’re the reasons to set it up properly, with a term, a buffer and an exit that would still work on a bad month. Our guide to exit strategy red flags lists the warning signs lenders look for.
Situations we fund with second mortgages
Tax and creditor pressure
- Pay an ATO debt with property equity
- ATO payment plan defaulted
- Settle a liquidator’s preference claim
- Fund a small business restructuring plan contribution
Ownership changes
Growth and contracts
Refinancing and equity
Could a second mortgage work for you? See if you qualify
The quickest way to find out is to ask. Enquiring doesn’t trigger a credit check, and your details stay with us rather than being fired off to a list of lenders. A specialist who works with second mortgages every day reads your enquiry and comes back with a straight answer.
Give us accurate figures for the property and what’s owing on it, and you’ll get the right answer the first time instead of a surprise later. Our lending partner fundU lends directly, so the people assessing the deal are the people funding it.
See if you qualify for a second mortgage and get a clear yes, no or “here’s what would make it work”.
For the lender’s own overview, see fundU’s page on fast second mortgages.
Frequently asked questions
Do I need my bank's permission to take a second mortgage?
Often, yes. Many first mortgages include a term saying the borrower must get the existing lender's permission before another mortgage is registered on the title. Your solicitor can check your mortgage terms, and we start that request early so it doesn't hold up settlement.
Is a second mortgage more expensive than a first mortgage?
Generally, yes. The second lender is repaid only after the first lender, so it carries more risk and prices for it. Each loan is priced on its own security, LVR, term and exit, and we aim for the sharpest price your situation allows.
Can I use a second mortgage for any business purpose?
The loan must be for business purposes, which includes property investment and development businesses. Common uses are paying the ATO, buying stock or equipment, settling a purchase, bridging a gap until a sale or refinance, and funding growth.
How long does a second mortgage last?
Second mortgages are typically shorter-term than private first mortgages. The term is set around your exit, such as the sale of a property, a refinance or a known payment coming in, so the loan is repaid before it becomes a burden.
What happens to the second mortgage if I sell the property?
At settlement of the sale, the first mortgage is paid out first, then the second mortgage, and the balance comes to you. Both mortgages are discharged so the buyer receives a clear title.
I owe $480k on a $1.3m warehouse in Dandenong and need $300k for stock. Could a second mortgage cover it?
On those figures it looks workable, subject to assessment. Illustratively, if total lending on the warehouse were held to around $900k, there would be roughly $420k of room behind the bank before interest and costs, so $300k leaves a sensible buffer. The stock sell-through or a later bank refinance would be the exit.
My bank said no to consenting to a second mortgage. What are my options now?
There are usually three. A caveat loan may still be possible, depending on what your bank's contract restricts. You could refinance the whole debt into one private first mortgage, which removes the need for consent. Or another property you own, including one held by a related entity, could carry the loan instead.
Can I put a second mortgage on my home to clear my company's ATO debt?
Yes, that's a business purpose. Every registered owner of the home must sign, your home lender may need to consent, and there must be a clear plan to repay, such as trading cash flow or a refinance. Your solicitor should explain the documents to each owner before anything is signed.
My accountant says interest on our ATO debt is now costing more after tax. Is a second mortgage cheaper?
It can be worth comparing. ATO general interest charge incurred on or after 1 July 2025 is no longer tax deductible, which changes the after-tax cost of leaving a debt with the ATO. We don't publish pricing, so ask for a Letter of Offer and have your accountant compare the two on the same footing.
I'm buying out my business partner for $400k and own an investment house with $200k owing. Can a second mortgage fund the buyout?
It's a common use. If the house has enough equity behind the $200k bank loan, a second mortgage can fund the payment to your partner while the bank loan carries on untouched. The exit is usually a refinance once the business is solely yours and the accounts reflect it, or a planned property sale.
Can one second mortgage be secured over two properties?
Yes. Where one property doesn't have enough equity on its own, two or more properties can be offered together, and each title records the security. Every owner of every property signs, and each property's existing lender may need to consent.
The property is owned by our family trust. Does that change anything?
The trustee signs the mortgage, so the trust deed is checked to confirm the trustee can borrow and give security for this purpose. If the trustee is a company, its directors sign under its constitution. It takes a little extra paperwork, not a different product.
My existing private second mortgage expires next month. Can you refinance it?
Usually, yes, provided the equity and exit still stack up. The new loan pays out the expiring private lender at settlement and its mortgage is discharged in the same transaction. Order the payout figure from the current lender early, because late payout figures are a common cause of delay.
Can I repay a second mortgage early if my property sells sooner than expected?
Repaying from an early sale is normal. How early repayment is handled, including any interest calculations, is set out in your Letter of Offer, so read that section with your solicitor before signing.
Does my bank's loan change when a second mortgage is added?
No. Your first mortgage keeps the same lender, pricing, repayments and term. The second mortgage is a separate loan registered behind it, and the bank's priority on the title is unaffected.
What if the property market dips while the second mortgage is running?
That's why lending stays inside a buffer below the property's assessed worth and why the term is matched to a real exit. If your exit relies on a sale price, build in room for a softer result, and talk to us early if anything changes rather than waiting for the expiry date.
Can a second mortgage be secured on commercial property, not residential?
Yes. Commercial and industrial property are accepted as security alongside residential property, and vacant land and rural property are considered case by case. Business owners often prefer to keep the family home out of the deal when a factory, shop or office has equity.
Sources
- Titles Queensland — Land Title Practice Manual Part 30: Mortgage Priority
- Queensland Government — Refinancing your home loan (existing lender permission for a second mortgage)
- Land Use Victoria — Land registration glossary: Mortgage
- business.gov.au — Choose your funding
- Australian Taxation Office — Denying deductions for ATO interest charges (updated June 2026)
- Australian Taxation Office — Director penalties (updated April 2026)