The bank wants your house as security for the business loan: should you say yes?

The application went in for the business. The answer came back as a yes, with a condition: the bank wants a mortgage over your home. Now the loan you thought was about the business is suddenly about the place your family lives.

Take a breath. This is one of the most common things a business lender asks for, and it isn’t a judgement on you or your business. It’s also not the final word. A bank’s first offer is its preferred position, and you’re allowed to ask questions, push back and compare before anyone signs anything.

Here’s how to think it through, in the order that matters.

Why is the bank asking for your house?

Banks lend against what they can recover. For a business loan without a big asset behind it, the bank’s comfort comes from two places: the cash flow it expects the business to produce, and something it can sell if that cash flow doesn’t arrive. Residential property is the security banks understand best.

As business.gov.au puts it, with a secured loan the lender holds collateral and can seize it if the loan isn’t repaid. That’s the whole trade. You’re likely to get a larger amount, a longer term or a better price than an unsecured loan would offer. In return, your home becomes part of the business’s risk.

The request usually tells you something useful about how the bank sees the deal:

• The business is young or the trading history is thin. The bank isn’t ready to rely on cash flow alone.
• The amount is large compared with turnover. Security is filling a gap in the numbers.
• Your home loan is already with the same bank. Taking your home as security is easy for them, because they already hold the first mortgage.

None of these is a reason to panic. All of them are worth knowing before you respond.

Question 1: Does the business actually need this money?

Before you weigh up the security, go back a step. Is the loan solving a real, specific problem with a clear end point, such as stock for a contract, a fit-out, buying a business or clearing a tax debt? Or is it covering losses that will simply return next quarter?

If it’s the second, the honest answer may be “not this”, whatever security the bank wants. Borrowing against your home to cover a business that isn’t covering its costs tends to delay the hard decision while raising the stakes. Our guide to when not to borrow against your home walks through the warning signs.

Question 2: What exactly would the mortgage secure?

This is the question most owners never ask, and it’s the one that matters most when your home loan is with the same bank.

Many bank mortgages are written as “all monies” securities. That means the mortgage over your home doesn’t just back the new business loan. It can back everything you owe that bank, now and in the future: your home loan, the business loan, an overdraft, credit cards, and whatever facilities you add later.

In practice, that can mean:

• your home and business debts become tied together with one lender;
• paying off the business loan doesn’t automatically free your home from the business relationship;
• refinancing either loan elsewhere later can be harder, because the bank holds security over both.

Ask the bank, in writing, what the mortgage will secure. Then have your lawyer read the security documents before you sign. You don’t need a lecture on mortgage law, just a clear answer to “if the business loan goes wrong, what can the bank do with my home, and what else is tied to it?”

Question 3: Can you shrink what the home is backing?

A bank’s request is a starting point. These are the counter-offers worth making, roughly in order of how often they’re accepted:

Ask the bank for	What it changes	Worth trying when
A cap on the amount the home secures	Your home backs a set figure, not unlimited debt	The loan is a fixed amount for a defined purpose
A limited guarantee	Your personal exposure has a ceiling	You’re guaranteeing a company’s borrowing
A different property	An investment or commercial property carries the risk instead	You own other property with enough equity
A smaller loan	Less debt, possibly less security needed	Part of the need can be met from cash flow or an asset sale
A release trigger	The home comes off once the balance drops or the business hits agreed numbers	You expect the business’s own figures to strengthen
Equipment or business assets as security	The asset being bought backs the loan	The money is for vehicles, machinery or fit-out items

You may not get all of these. But a bank that refuses every reasonable request is telling you something about how it sees the relationship. Our page on choosing which property secures the loan covers the home-versus-investment-versus-commercial decision in more depth.

If you’d like a second opinion on whether there’s a gentler way to structure it, you can send us a short enquiry. There’s no credit check when you first enquire.

Question 4: Who else is on the title, and are they really on board?

If your home is jointly owned, every registered owner must sign the mortgage. For a spouse or partner who isn’t in the business, that’s a big ask: they’re carrying risk for a business they don’t run.

The 2025 Banking Code of Practice, which ASIC approved and which commenced on 28 February 2025, gives guarantors who aren’t directors meaningful protections. Under the Code, a guarantee can be limited to a specific amount or to the value of specified property, the bank generally can’t accept it until the third day after the guarantor receives the information, and in many cases the bank has to meet the guarantor without the borrower present. Those protections apply to banks that subscribe to the Code; they don’t bind every lender.

Whatever the rules, the decision belongs to both of you. A reluctant co-owner is a warning, not a box to tick. Our guide to talking it through with a co-owner has a calm way to have that conversation.

Question 5: Would a different lender keep things cleaner?

Sometimes the most sensible move is to keep your home loan exactly where it is and put the business borrowing somewhere else.

An unsecured loan. For trading businesses with steady turnover and bank statements to show it, an unsecured business loan keeps property out of it entirely. Amounts are typically smaller and sized on turnover, and the cost is usually higher, but your home isn’t on the line.

A separate business-purpose second mortgage. This sits behind your existing home loan without replacing it. Your home loan, its rate type and features stay as they are, and the business debt has its own lender, its own term and its own exit. It’s still secured on your home, so the risk doesn’t disappear, but it isn’t tangled into everything else you owe your bank. See getting a second mortgage without refinancing for how that tends to work.

Equipment finance. If the money is for assets, the asset itself can often be the security. See equipment finance instead of your home.

Compare the full cost over the time each option will realistically run, not just the headline. A loan that’s slightly dearer but ends cleanly can be the better deal.

Question 6: How will this loan end?

Every loan secured on your home should have an exit you can describe in one sentence before you sign: repaid from the contract proceeds, refinanced into a business facility once the trading record is longer, or repaid from the sale of an asset. Then add a fallback, in case the first plan runs late.

Leave a cushion of equity too. If the home were valued 10% lower than you hope, would the combined borrowing still sit comfortably? The equity decision helper shows usable equity at illustrative combined-LVR bands and flags when the buffer looks thin, and our exit plan guide helps you build the plan itself.

An illustrative example

A landscaping business with three years of trading applies to its bank for $150,000 to buy materials and carry wages through a large council contract. The owners’ home is worth about $950,000 with a $400,000 home loan at the same bank, a combined LVR of about 42%.

The bank approves on condition of a mortgage over the home. The owners ask three questions: what will the mortgage secure, can it be capped at the loan amount, and will the bank release it once the contract is paid? The bank confirms its standard mortgage would secure all their debts with it and won’t cap it.

They compare that with a separate business-purpose second mortgage for the same amount. That would take the combined LVR to about 58%, or about 64% if the home were valued 10% lower: still a reasonable cushion. Their home loan would stay untouched, and the exit is clear: repay from the council’s progress payments, with a fallback of refinancing into a business facility after the contract. Both owners get independent legal advice before choosing. Illustrative only; no rates or repayments shown.

Either path might be right for them. The point is that they chose with the full picture, rather than accepting the first condition they were given.

When should you say no?

It’s worth walking away from any version of the deal if:

• the business can’t show a believable way to repay from its own cash flow or a specific event;
• your co-owner isn’t comfortable, even after seeing the numbers and the exit;
• the loan would leave little or no equity cushion in your home;
• the money is covering ongoing losses rather than a one-off need;
• you’d be signing documents you haven’t had explained to you independently.

Our page on protecting the family home covers the safeguards that matter most if you do go ahead.

Get a straight second opinion before you sign

When a bank puts your home on the table, it helps to talk to someone who isn’t that bank. We look at situations like this every week, and sometimes the answer is that the bank’s offer is fine. Sometimes there’s a cleaner way to do it, and sometimes the right move is to keep the house out of it altogether.

Asking takes about a minute, and there’s no credit check when you first enquire. Your details go to one specialist, never sprayed across a pile of lenders, so your phone stays quiet. A real person reads your situation, calls you, and will tell you honestly if a second mortgage isn’t the right fit, along with what might suit you better. Please fill the form in accurately: what the property is worth, what’s owed and to whom, who’s on the title, how much the business needs, what it’s for and how you plan to repay. That way the first conversation is useful.

Get a second opinion on the bank’s offer →