Unsecured vs Secured Business Loans: Which Costs Less?

The short answer

A secured business loan is backed by a mortgage over real property, on top of the general security most lenders take anyway. An unsecured loan skips the property mortgage. What almost never changes between the two is the personal guarantee: nearly every lender in Australia, bank or non-bank, asks a director to personally guarantee the debt regardless of which category the loan falls into.

So the real question is not "am I personally on the hook", because you usually are either way. It's "how directly can this debt reach my house if the business can't pay it back." That's a different question, and it's the one this guide actually answers.

What "unsecured" actually means

An unsecured business loan is assessed on how the business trades rather than what it owns. No mortgage is taken over real property, which is why these settle in days rather than the weeks a secured facility takes. But unsecured does not mean no security at all. Almost every facility in this category is still supported by a general security agreement (a GSA, sometimes called an "all present and after-acquired property" charge) over the business's own assets, plus a director's guarantee. You are avoiding a mortgage over your home. You are not avoiding personal responsibility for the debt.

What "secured" actually means

A secured facility adds a registered mortgage over real property, usually a director's home or an investment property, on top of the same GSA and the same guarantee. That extra layer is what buys the lower rate and the larger limit, because the lender now has a direct, first-ranking claim over a specific, valuable asset, rather than relying on legal process against you personally to get paid.

The part that catches people out: the personal guarantee

A personal guarantee is exactly what it sounds like. You, personally, promise to repay the debt if the business can't. It's signed by you as an individual, not by "the company", which is precisely why it works differently to the general security agreement over business assets.

If the business defaults and the GSA-secured business assets don't cover the shortfall, the lender can pursue you personally for what's left. In practice that means your savings, other property, vehicles, anything in your own name, not just what the business owns. The difference between that and a mortgage is really about process, not outcome:

With a mortgage, the lender has a direct, registered claim over one specific property. If you default, they can move against that property through the mortgage itself.
With a guarantee alone, the lender first needs a judgment against you personally through the courts. Once they have one, standard debt-recovery tools apply, which can include a caveat over property you own, and in serious, unresolved cases, bankruptcy proceedings, which can ultimately force the sale of personal assets including a family home.

So "unsecured" doesn't mean your house is safe by default. It means the lender doesn't have a direct, fast route to it. They may still be able to reach it, just through a longer and less certain legal path, which is also part of why unsecured debt is priced higher: the recovery process is slower and less certain, so lenders charge more for taking that path.

Unsecured doesn't mean risk-free

It means no mortgage over your property today. Sign a personal guarantee, which almost every facility requires, and your personal assets are still indirectly on the line if the business can't repay. Go into either type of facility with that understood, not as a surprise you discover at the worst possible time.

So does going unsecured actually cost you less?

Compare like for like and the numbers are clear. Unsecured business loans across our panel run roughly 9.5% to 25% p.a. A secured facility backed by property, for a comparable business and amount, is typically closer to 6% to 12% p.a. If you have spare equity in property and you're not in a rush, secured is nearly always cheaper over the life of the loan. You're already carrying personal exposure through the guarantee either way, so adding the property is often the cheaper version of a risk you've already taken on, not a materially bigger one.

Unsecured wins on other things: settlement in 24 to 72 hours rather than the weeks a mortgage takes to prepare, value and register; not tying up your only property; and keeping your home free for a future purchase or for your own borrowing later. If you don't own property, or you're not willing to offer it, unsecured is simply the only door open, and that's a perfectly good reason to use it.

When property security is worth it anyway

Large facilities. Above roughly $1 million, most of the market wants property behind the deal. Prime-tier pricing at real scale is a secured game.
Rate-sensitive, patient borrowers. If the funding isn't urgent and the gap between secured and unsecured pricing is thousands of dollars a year, the wait is usually worth it.
Weaker trading files. Property security can turn a marginal unsecured application into an approved, sensibly priced secured one.
Businesses already carrying several unsecured facilities. Consolidating into one secured loan can lower the total repayment burden even after accounting for the mortgage.

What lenders look at either way

The personal guarantee means your own position matters on every application, secured or not: your credit file, existing personal debts, and what else you've already guaranteed. On the business side, lenders weigh trading history, bank statement conduct, revenue consistency, your ATO position, and any existing lender debits already hitting the account. Property security changes the pricing and the limit. It doesn't remove the need for the business itself to stack up.

A quick decision test

Do you own property with spare equity, and can the funding wait a few weeks? Get quotes on both and compare the total cost, not just the headline rate.
Do you need the money in days, not weeks? Unsecured, and go in understanding the guarantee.
Would putting up property tie up an asset you need free for something else? That's a real cost even at a lower rate. Weigh it, don't ignore it.
Not sure what you're already exposed to? Ask us to read back exactly what you'd be signing before you sign anything. It costs you nothing to ask.

Common questions

If it's unsecured, why do I still have to sign a personal guarantee?

Because "unsecured" only refers to whether the lender takes a mortgage over property. Almost every commercial lender, bank or non-bank, still wants a personal guarantee from the directors regardless, because the general security agreement over business assets alone often isn't enough to make the loan worth writing.

Can a lender actually take my house if there's no mortgage over it?

Not directly, and not quickly. Without a mortgage, the lender has to obtain a judgment against you personally through the courts first. Once they have one, enforcement can extend to personal assets you own, including property, through processes like a caveat or, in serious unresolved cases, bankruptcy. It's a longer, less certain path than a mortgage, but it isn't a wall.

Does putting up property actually save money once you account for the guarantee?

Usually yes, if you have spare equity and aren't in a rush. You're carrying personal exposure through the guarantee either way, so adding property security typically buys a materially lower rate for a risk you've already taken on, rather than adding a new one. It's worth comparing actual quotes rather than assuming.

Unsecured vs secured business loans: which one actually costs less?