Lately, I’ve seen many property investors recommending Interest Only (IO) loans as a way to free up cash flow, buy the next property sooner, and maximise tax deductions. It sounds great in theory… but is IO actually the right choice for every investor? 🤔
Let’s break it down with a simple example to help you picture the difference.
🔍 IO vs P+I — What’s the Real Difference?
Principal & Interest (P+I)
- You repay both interest and principal
- Your loan balance gradually reduces
- You naturally build equity over time
Interest Only (IO)
- You only repay interest
- Your loan balance stays the same
- IO terms usually last 5–10 years
- Rates are often higher because banks see it as higher risk
🌈 When Interest-Only Can Make Sense
IO isn’t automatically bad—there are situations where it fits well within an investor’s strategy:
✔ You want to optimise cash flow to invest again
✔ You prefer to put cash in the offset account of your home
✔ You plan to renovate or sell in the short term
✔ You’re confident the property will grow strongly in value
✔ You’re on a high tax bracket, making interest deductions more valuable
📌 A quick example
For a borrower on a 47% tax rate, the tax saving on a $1M loan at IO 5.8% vs P+I 5.5% is roughly $15.3K over 5 years.
But… total interest paid is about $32.5K higher with IO.
👉 Saving tax doesn’t always mean saving money overall.
⚠️ The Risks You Shouldn’t Ignore
Interest-Only is not a one-size-fits-all solution. Here’s what often gets overlooked:
❌ Higher interest rates → lower borrowing capacity
If your borrowing power is already tight, IO might restrict how much you can borrow.
❌ Sharp jump in repayments after IO ends
Using the example above:
- IO repayment: ~$4,833/month
- After switching to P+I: ~$6,321/month
That’s an increase of ~$1,488/month.
If your income or savings haven’t improved by then, this can create financial stress.
❌ Property value risk
If values fall, your LVR rises, potentially pushing you into higher interest brackets.
❌ Not ideal for older borrowers or those prioritising stability
If your goal is to be debt-free by retirement, IO may not align with a low-risk strategy.
💬 In Short
✔ There’s no perfect loan product for everyone
✔ Understanding your strategy, goals, and risk tolerance is key
✔ What works for an investor chasing growth may not suit someone who values stability
When I work with clients, I always walk through the full picture—risks, long-term plans, and how each option affects their finances. A home loan is a big decision, and the wrong structure can cost you more than you expect.
If you’d like help reviewing loan options or want to know how much you can borrow, feel free to get in touch. I’m here to guide you through it 🙂
🚩 Disclaimer
This example is for illustration only. Interest rates, lending policies, and product features vary by lender and individual circumstances. This is general information, not personal financial advice.
