Second mortgage bridge loans: bridging a timing gap behind your existing loan

What gap is a second mortgage bridge built for?

A bridge is for money you are confident is coming, but not yet. The asset is real, the event is scheduled, and the business can’t wait. Common business examples:

• A property is on the market or under contract, but settlement is weeks away and a supplier, the ATO or a deposit can’t wait.
• A bank refinance is approved in principle but documents will take another month.
• A contract payment, retention release or insurance claim has been confirmed but not yet paid.
• A tax or grant refund is due, with correspondence confirming the amount.

Because the first mortgage stays exactly where it is, the second-mortgage version of a bridge skips the discharge-and-replace work of a traditional bridging refinance. It lends only the gap, behind the existing loan.

How does the structure usually look?

Element	Typical approach	Why
Amount	The gap, plus costs and a margin	Keeps the combined LVR comfortable
Term	Exit date plus a sensible margin	Protects against delays
Interest	Prepaid or capitalised	No monthly strain during the gap
Security	Second mortgage over one or more properties	Keeps the first loan intact
Repayment	From the sale, refinance or incoming funds	One payout at the exit

Capitalising or prepaying interest makes cash flow easier during the bridge, but it increases the amount owed at the end. That’s fine when the exit is large and certain; it needs care when the buffer is thin. See the equity buffer and second mortgage costs.

How strong does the exit need to be?

For a bridge, the exit is the loan. Lenders rank exit evidence roughly like this, from strongest to weakest:

1. Exchanged, unconditional contract of sale with a settlement date.
2. Formal refinance approval or a signed contract with a confirmed payment date.
3. Property listed with an agent, sensible price guide and campaign under way.
4. Refinance in progress with financials submitted.
5. An intention to sell or refinance, not yet started.

Files at the top of that list move fastest and on the best terms. Files at the bottom are still possible but usually shorter, more conservative and backed by a thicker buffer. Our page on second mortgage exit plans goes deeper on evidence.

If you’ve got a date in hand, tell us the gap and the exit. Up to $5,000,000 is possible within 24 to 48 hours on clean property security.

What can go wrong with a bridge, and how do you protect against it?

• The sale takes longer. Build in a margin, and set a realistic price guide from the start.
• The sale price is lower than hoped. Keep the combined LVR comfortable so a lower price still clears both loans.
• Capital gains tax on sale. If the property being sold is an investment or business property, CGT may reduce the net proceeds. The ATO’s capital gains tax pages explain how it’s worked out; your accountant can estimate it before you rely on the figure.
• The refinance needs more documents. Start gathering financials early.
• Two settlements need to line up. Electronic settlement makes coordination easier, but talk to your conveyancer early.

Illustrative example: buying premises before selling

A manufacturer has exchanged on new factory premises and needs a $400,000 deposit top-up and fit-out money before its current investment unit sells. The owner’s home is worth about $1,600,000 with $700,000 owing. The investment unit is listed with an agent. A $450,000 second mortgage over the home bridges the gap, with interest capitalised and a nine-month term. Combined LVR is about 72%, and the unit sale is the exit, with a refinance as backup. All figures are illustrative.

That example uses one property; sometimes two are better. Spreading the security across the home and the property being sold can lower the combined LVR on each title. See second mortgages over two properties.

Bridge, caveat or refinance?

For very short, small gaps, a caveat loan can be marginally quicker but offers weaker security and usually suits only brief terms. For longer gaps or larger amounts, a full refinance may be cleaner. If the first loan is worth keeping and the gap is weeks or months, a second mortgage bridge often sits in the sweet spot. Compare them in second mortgage vs caveat loan. Deciding whether to sell at all? Our guide on selling versus borrowing against a property lays out the trade-offs.

What does a bridge cost relative to waiting?

The honest comparison is the bridge’s total cost against the cost of not bridging: a lost deposit, a missed purchase, a supplier discount forgone, ATO interest, or a forced sale at a poor price. When the gap is certain and the cost of missing the deadline is high, a bridge often pays for itself. When the event is uncertain, it’s worth pausing and firming up the exit before borrowing.

Know the date? Let’s build the bridge

If you can say when the money arrives and where it comes from, we can usually tell you quickly whether a second mortgage bridge works. Enquiring takes around 60 seconds, and there’s no credit check when you first enquire.

We keep your details with one specialist instead of scattering them across a list of lenders. That person maps the gap, the exit and the term, then calls you with a structure. Please give the exit date and amount as accurately as you can; a bridge built on the right dates is one that doesn’t need rebuilding later.

Bridge my timing gap →