Bridging Loans Explained
How bridging loans actually work, peak debt vs end debt with a worked example, how capitalised interest works, and the real risks if a sale is slow.
By Timothy Hirou GaschereauPublished 8 min read
Try it yourself
Buying a new home before selling the old one solves a genuine timing problem, but a bridging loan comes with a specific set of mechanics and risks worth understanding before signing anything. This is part of a wider guide to property and debt on Snowball Invest.
Quick answer
A bridging loan lets you buy a new home before selling your current one, covering the financial gap in between. It's typically interest-only, with interest often capitalised onto the loan balance, over a maximum term commonly around 12 months. Once your old home sells, the proceeds pay down the bridging loan, leaving a smaller "end debt" as your ongoing home loan.
In this guide
- →What a bridging loan actually is, and how peak debt and end debt are calculated
- →How the interest actually works, and why it usually grows the debt during the bridging period
- →The typical timeframe against real Australian selling times, and what happens if you miss it
- →A full worked example, the real risks, and alternatives worth considering
🌉 What a bridging loan actually is
It's short-term finance specifically for the overlap between purchasing a new property and selling an existing one, avoiding the need to sell first, rent somewhere temporarily, then buy once a sale settles. The trade-off is real added cost and risk during the bridging period, in exchange for the convenience and reduced hassle of a single move.
📊 Peak debt and end debt
Two figures define how a bridging loan is structured:
- Peak debt: the total owed while holding both properties, existing mortgage balance plus the loan for the new property.
- End debt: what's left once the old property sells and the proceeds are applied against the peak debt, this becomes the ongoing home loan on the new property.
If the current home has a $300,000 loan balance and the new home requires a $500,000 loan, peak debt is $800,000. If the old home sells and nets $350,000 after costs, that amount comes off the peak debt, leaving a $450,000 end debt as the new, ongoing mortgage.
💸 How the interest actually works
Bridging loans are usually structured as interest-only for the bridging period, and many lenders capitalise that interest, adding it to the loan balance rather than requiring it to be paid monthly, which means the total debt actually grows during the bridging period rather than staying flat. Bridging loans also tend to carry a higher interest rate than a standard home loan, reflecting the lender's added short-term risk. Once the bridging period ends, the end debt becomes an ordinary home loan, worth deciding in advance whether fixed, variable or split suits it best.
⏳ The typical timeframe, and what happens if you miss it
🎯 The essential: A typical Australian sale is well inside a 12-month cap, but "days on market" isn't the whole clock, settlement adds real weeks on top.
Lenders commonly cap bridging loans at around 12 months. Selling faster than that limits how much interest capitalises onto the loan, selling slower increases the total cost, and failing to sell within the cap can trigger a default interest rate, or in some cases the lender stepping in to manage the sale of the property directly to recover their money.
For context, Cotality's tracking of the national market puts the median time to sell (from listing to an accepted offer) at around 29-32 days nationally, though it varies substantially by city, from roughly 10 days in a hot market like Perth to well over 50 days in Darwin or Hobart. That figure is only "days on market" though, not the full timeline a bridging loan needs to cover, a typical settlement period adds a further four to six weeks after an offer is accepted before the sale proceeds actually land. Most bridging periods do finish comfortably inside the 12-month cap, but it's the combined listing-to-settlement timeline that matters for planning, not the shorter, more commonly quoted days-on-market figure alone.
🧮 A worked example
Someone with a $300,000 existing mortgage buys a new home requiring a $500,000 loan, for a peak debt of $800,000. Interest capitalises over a seven-month bridging period before the old home sells for $650,000, netting $350,000 after remaining mortgage and selling costs. That $350,000 comes off the peak debt, plus the capitalised interest accrued during those seven months, leaving an end debt somewhat above the "clean" $450,000 figure, which becomes the new ongoing home loan going forward.
🏠 Real Loan Cost Calculator
See the total interest cost of a loan over a given period, the same principle bridging interest follows.
⚠️ The real risks
What it genuinely solves
- ✓Avoids the hassle and cost of a temporary rental between selling and buying
- ✓Lets you secure the new property without waiting for the old one to settle first
- ✓A single move instead of two
What it risks
- ✕Capitalised interest means the debt grows the longer the old property takes to sell
- ✕A slower-than-expected sale, or a lower sale price, directly increases the end debt
- ✕A higher interest rate than a standard home loan for the bridging period
- ✕Missing the maximum term can trigger default rates or lender involvement in the sale
🔀 Alternatives worth considering
| Option | How it works | Main trade-off |
|---|---|---|
| Bridging loan | Buy first, sell later, one combined loan | Interest cost and risk if the sale is slow or low |
| Sell first, rent temporarily | Sell, rent short-term, then buy once settled | Two moves, and temporary accommodation costs |
| Subject-to-sale offer | Make an offer on the new home conditional on selling the old one | Sellers may prefer an unconditional buyer instead |
None of these is universally better, the right choice depends on how confident you are in your existing property's sale timeline and price, and how much the convenience of a single move is worth to you. If the goal is actually to keep the old property as an investment rather than sell it, using its equity is worth comparing against a bridging loan too.
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❓ Frequently asked questions
Do I make repayments during a bridging loan?
+
Often not in the traditional sense, interest is commonly capitalised, added to the loan balance, rather than paid monthly, meaning the debt grows during the bridging period instead of being paid down. Some lenders offer interest-only repayments instead, worth confirming which structure applies before committing.
What if my old home doesn't sell within the bridging period?
+
Most lenders set a maximum bridging term, commonly 12 months, after which a default interest rate can apply, and the lender may become involved in selling the property to recover the debt. It's a genuinely serious consequence, worth having a realistic view of local selling timeframes before relying on a bridging loan.
Is a bridging loan the same as a normal home loan?
+
No, it's a distinct, short-term product specifically for the overlap period between buying and selling, typically at a higher interest rate than a standard home loan, reflecting the lender's added risk and the temporary nature of the arrangement.
What happens if my old home sells for less than expected?
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The shortfall between the sale proceeds and what's needed to clear the peak debt has to be covered somehow, either from savings or by rolling it into the ongoing home loan on the new property, increasing the end debt beyond what was originally planned.
📚 Recommended reading
The Barefoot Investor
Scott Pape
Australia's best-selling money book ever. A simple system for accounts, budgeting, debt and a real emergency fund in one.
Some links above are affiliate links. If you buy through them, Snowball Invest may earn a small commission at no extra cost to you. We only recommend books we'd suggest anyway.
Sources
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Timothy Hirou Gaschereau
Founder of Snowball Invest, not a financial adviser.
I write about what I'm learning myself, because nobody ever taught us how to take control of our own money. It's a skill, not a mystery, and it's never too late to learn it. The best day to start was yesterday, the second best is today.
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