A fixed rate investment loan suits you when certainty matters more to you than flexibility, and that balance shifts as your life changes.
If you live in Currumbin, you probably know how much people here value their time, their family and their place by the creek and the beach. Your investment loan should fit that life, not the other way around. This article looks at when a fixed rate makes sense at different stages, and what you give up in return.
What Is a Fixed Rate Investment Loan and Who Is It For?
A fixed rate investment loan locks in your interest rate for a set period, so your repayments stay the same until the fixed term ends. It suits investors who want to know exactly what the loan will cost each month.
The main trade-off is flexibility. Depending on the lender, fixed loans can limit extra repayments, offset accounts and redraw, and ending the fixed term early can bring break costs. If the variable rate falls, you will not benefit during the fixed period. These rules vary between lenders, so check the terms of any product before you commit.
Our investment loans page explains the main structures, and we can compare options from lenders across Australia for you.
Fixed Rate Investment Loans in Your Thirties: Building the Base
In your thirties, a fixed rate can protect a tight household budget while you are building your first investment.
Consider a couple who buy an investment property and borrow $600,000. At an illustrative rate of 6.75% p.a., interest-only repayments would be about $3,375 a month ($600,000 x 6.75% / 12). Fixing the whole loan at that rate keeps the repayment the same during the fixed term, which helps while they juggle childcare costs and a mortgage on their own home.
The risk is that their circumstances change. If they sell or refinance during the fixed term, break costs may apply, and the amount depends on the lender and how rates have moved. A split loan, with one part fixed and one part variable, can keep some room for extra repayments, although the repayment on the variable part can still change. Ask us how each lender treats those features.
Serious planning starts with knowing how much you can borrow. Our borrowing capacity page is a good starting point. Lenders regulated by APRA must assess new borrowers at a rate at least 3 percentage points above the loan product rate. How a fixed rate is assessed varies by lender, so a broker should confirm the assessment rate for you.
Interest-Only or Principal and Interest When You Fix?
Interest-only repayments keep your payments lower for a set period, while principal and interest repayments reduce the loan balance from day one. Both can be fixed.
Using the same illustrative 6.75% p.a. rate, interest-only on $600,000 is about $3,375 a month. Principal and interest over 30 years would be about $3,891 a month. The difference is about $516 a month, and under principal and interest you are paying down the debt.
An interest-only period does not increase how much you can borrow. Lenders assess it over the shorter remaining term, so a 30-year loan with a 5-year interest-only period is assessed over 25 years of principal and interest. When the interest-only period ends, repayments rise because the same balance is repaid over fewer years. On $600,000 at 6.75% over 25 years, that is about $4,145 a month.
Interest on an investment loan is generally deductible, but the principal part of a repayment is not. Talk to your accountant about how this applies to you.
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Fixed Rate Investment Loans in Your Forties and Fifties: Protecting What You Have Built
In your forties and fifties, fixing part of your investment debt can protect your cash flow while you pay for school fees, home renovations or help for your kids. It also gives you a clear picture of costs as you plan ahead for retirement.
Consider an investor in this stage who has two investment loans, both variable. Their budget is stretched by family costs, so they fix half of one loan and keep the rest variable with an offset account. Their repayments on the fixed part become predictable, and the variable part lets them put spare cash aside. The trade-off is that if they decide to sell the property inside the fixed period, they may face break costs on that portion, so they check the lender's terms first. Their outcome is steadier monthly planning without losing every bit of flexibility.
If you already hold a fixed loan, our fixed rate expiry page explains what to plan for before the term ends. It can be a good time to look at refinancing as well, since you are not usually charged break costs for leaving at the end of the fixed term. Fees and discharge costs differ between lenders.
Negative Gearing Changes Investors Should Know About
From the 2027-28 income year, net rental losses on established residential properties bought after 7:30pm AEST on 12 May 2026 can only be deducted against other residential property income. Properties held at that time, and eligible new builds, keep the current treatment.
This matters for a fixed rate decision because a loss-making property may rely on tax deductions to stay affordable. A fixed repayment is predictable, but it will not change how a rental loss can be used. Your accountant can tell you how these rules apply to your situation.
Fixed Rate Loans Closer to Retirement
Nearing retirement, a fixed rate can give you certainty when your wage income is about to drop and your repayments need to be steady. It suits you when you know the loan will run until the end of the fixed term.
The cost is the same: less flexibility if you want to sell or pay the loan down faster. If you plan to sell an investment property to fund retirement, a shorter fixed term may be a closer fit, or you may prefer to leave part of the loan variable. Capital gains tax can also affect what you keep from a sale, so speak to your accountant first.
You can test different repayment levels with our loan repayments calculator, then bring the numbers to us.
Planning Around Currumbin Life
Locals value their time on the Gold Coast, whether that is at the beach, at the creek or at the local markets. The right loan structure should give you your weekends back, not fill them with worry about rates. Fixing the repayments is one way to give your family a steady footing, as long as you accept the trade-offs.
Call one of our team or book an appointment at a time that works for you. We will go through your goals, your budget and your stage of life, and find a loan structure that fits. You can also book an appointment online.
Frequently Asked Questions
What is a fixed rate investment loan?
It is an investment loan where the interest rate is locked for a set period, so your repayments stay the same during that time. The trade-off is less flexibility, and break costs may apply if you end the fixed term early.
Does fixing my rate increase how much I can borrow?
Fixing does not remove the buffer test. Lenders regulated by APRA must assess new borrowers at a rate at least 3 percentage points above the loan product rate, and the effect on borrowing capacity depends on the lender's assessment rate. An interest-only period does not increase borrowing capacity.
Can I fix only part of my investment loan?
Yes, many lenders offer split loans with a fixed portion and a variable portion. Features such as offset accounts and extra repayments differ between lenders, so check the terms of each product.
Are the negative gearing rules changing?
From the 2027-28 income year, losses on established residential properties bought after 7:30pm AEST on 12 May 2026 can only be deducted against residential property income. Properties held at that time and eligible new builds keep the current treatment, so speak to your accountant.