Fixed vs Variable Interest Rates: What Property Investors Often Get Wrong

Interest rates are one of the most discussed topics in property investing, especially when markets become uncertain.

When rates rise, many investors immediately start asking whether they should fix their loan. When rates fall, others regret having fixed in the first place.

But the reality is that the fixed versus variable debate is often focused on the wrong question.

In this episode of the Property Nerds Podcast, Arjun Paliwal sat down with Jack Fouracre from Fouracre Financial to unpack how fixed and variable rates actually work, the hidden trade-offs investors often overlook, and why finance strategy is usually far more important than chasing the lowest possible interest rate.

What Happened

The discussion began with a simple question: why are fixed rates suddenly becoming popular again?

As interest rates have increased over recent years, many investors have started looking for certainty in their repayments. Fixed-rate loans offer that certainty by locking in a rate for a set period, typically between one and five years.

However, Jack explained that fixing a rate often comes with hidden costs and reduced flexibility. The conversation then expanded into how banks price fixed-rate products, why rate lock fees exist, the limitations around refinancing, and the broader role finance strategy plays in building long-term wealth.

Perhaps the most important takeaway from the episode was that successful investors rarely build wealth by focusing solely on interest rates. Instead, they focus on flexibility, portfolio growth, access to equity, and maintaining the ability to make strategic decisions when opportunities arise.

Key Findings

1. Fixed rates provide certainty, but they reduce flexibility

A fixed-rate loan locks your interest rate for a predetermined period, protecting you from future rate increases.

That certainty can be valuable for some borrowers, particularly those who want predictable repayments.

However, fixed loans often come with trade-offs. Investors may face restrictions on refinancing, switching lenders, accessing equity, or restructuring their loans during the fixed period.

While the repayment may be predictable, the broader lending strategy can become far less flexible.

2. The worst time to fix is often during a rate-rising cycle

One of the strongest points made during the episode was that many investors consider fixing their loans precisely when banks have already priced future rate increases into their fixed-rate offerings.

When interest rates are rising, lenders generally anticipate further increases and adjust fixed-rate products accordingly.

As a result, investors who fix late in the cycle may end up locking in rates that already reflect the market's expectations.

The discussion highlighted that fixed-rate decisions should be driven by personal circumstances and risk management, not simply by reacting to headlines.

3. Breaking a fixed loan can be expensive

Many borrowers underestimate the costs associated with exiting a fixed-rate loan early.

If market rates fall after a loan has been fixed, borrowers may wish to refinance or switch lenders. In many cases, this can trigger break costs that run into thousands of dollars.

These fees are designed to compensate lenders for the interest income they expected to receive over the fixed period.

Before fixing a loan, investors should understand not only the advertised rate but also the potential costs of changing strategy later.

4. Rate lock fees are another hidden consideration

Many investors assume that once they are approved for a fixed-rate loan, that rate is guaranteed.

In reality, fixed rates can change before settlement unless the borrower pays a rate lock fee.

This fee allows borrowers to secure the offered fixed rate during the settlement process, protecting them from changes in the lender's pricing.

While rate lock fees may seem small, they can reduce some of the perceived benefits of fixing in the first place.

5. Access to equity often matters more than a lower rate

One of the most valuable parts of the discussion focused on equity and portfolio flexibility.

Arjun shared how access to equity during uncertain periods provided significantly more financial security than a marginal reduction in interest rates ever could.

For many investors, the ability to access equity, strengthen cash buffers, fund future purchases, or manage unexpected events can have a much greater impact on long-term wealth creation than saving a small percentage on their interest rate.

The conversation reinforced the idea that finance should support strategy, not limit it.

6. Fixed rates and offset accounts often don't work well together

Offset accounts remain one of the most valuable tools available to property investors.

However, many fixed-rate loans either do not offer offset accounts or provide only partial offset functionality.

This creates an important trade-off. While investors may gain certainty through a fixed rate, they may lose some of the flexibility and interest savings that an offset account can provide.

Understanding how loan products fit into an overall strategy is often more important than comparing rates alone.

7. Property investing is ultimately a finance game

Throughout the episode, both Arjun and Jack repeatedly returned to a broader theme.

Successful investors do not build portfolios through rate chasing.

They build portfolios through strong finance structures, lender selection, borrowing capacity management, access to equity, and strategic flexibility.

A lower interest rate may improve cash flow in the short term, but finance strategy determines what opportunities remain available in the future.

Action Steps

Before deciding whether to fix or keep your loan variable, consider the bigger picture.

• Understand why you're considering a fixed rate in the first place.

• Assess whether flexibility may be more valuable than repayment certainty.

• Review the costs of breaking a fixed loan before committing.

• Consider how future equity releases could support your investment goals.

• Check whether your preferred loan product allows for offset functionality.

• Focus on your broader finance strategy rather than small differences in interest rates.

• Model the real financial impact of any rate savings after fees, tax outcomes, and portfolio implications.

The best loan structure is rarely the one with the lowest advertised rate. It is usually the one that gives you the greatest ability to execute your long-term investment strategy.

If you'd like help building a finance strategy that aligns with your property goals, book a discovery call with InvestorKit.