How Additional Repayments Cut Years Off Your Loan Term
Adding even small amounts to your principal reduces the balance your interest compounds on. If you're holding an investment property in Launceston while renting in Hobart, an extra $200 per fortnight directed to principal cuts into the loan faster than waiting for scheduled repayments alone.
Consider someone with a $400,000 loan on a Burnie investment property at current variable rates. By switching from monthly to fortnightly repayments, they make the equivalent of one extra monthly payment per year without feeling the pinch. Over time, that shifts the balance enough to shave months off the loan term and reduces total interest paid.
For rentvestors, this works particularly well when rental income from the investment property is assessed at 80 per cent by the lender but you're collecting closer to full rent. That gap becomes cash flow you can redirect to principal without cutting into your own living costs.
Offset Accounts and How They Work on Investment Loans
An offset account sits alongside your loan and reduces the balance on which interest is calculated. Every dollar in the offset reduces your interest bill by the same amount as a dollar paid off the loan, but the money stays accessible.
For owner-occupiers, this is straightforward. For investors, it's more complicated. Interest on an investment loan is tax-deductible, so parking cash in an offset reduces your deduction. That's fine if you're planning to convert the property to owner-occupied later, but it's worth running the numbers with your accountant first.
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We regularly see Tasmanian clients with both an investment property and plans to buy their own home within a few years. In those cases, keeping savings in an offset attached to the investment loan preserves access to funds for a future owner-occupied deposit without locking cash into the loan itself. The trade-off is a slightly smaller tax deduction today in exchange for flexibility tomorrow. You can read more about offset accounts on investment loans here.
Fixed Rate, Variable Rate, or Split: Which Helps You Pay Off Faster?
Fixed rates lock in certainty but typically don't allow extra repayments beyond a small annual cap, often around $10,000 to $30,000 depending on the lender. Variable rates give you full flexibility to throw any amount at the loan without penalty.
A split loan divides your borrowing between fixed and variable portions. You get partial rate certainty on the fixed side while keeping the variable portion open for additional repayments. If you're a rentvestor holding property in a regional Tasmanian town like Devonport or Ulverstone, a split structure lets you budget with confidence on part of the loan while aggressively paying down the variable portion when cash flow allows.
If your fixed rate is due to expire soon, check what restrictions apply before it rolls to variable. Some lenders allow you to move to a different product or refinance without penalty once the fixed term ends. Others charge break costs if you exit early. More on that in our fixed rate expiry guide.
Interest-Only Loans and When to Switch to Principal and Interest
Interest-only repayments keep your monthly cost lower by deferring principal repayment, usually for up to five years. This can work well in the early years of an investment loan when cash flow is tight or when you're planning to sell before the interest-only period expires.
But if your goal is to pay the loan off faster, staying interest-only delays that outcome. Switching to principal and interest means every repayment reduces the balance, which in turn reduces the interest charged on the remaining loan.
For a Tasmanian rentvestor with a property in Kingston or Glenorchy, switching from interest-only to principal and interest once your income increases or your rent rises can accelerate equity growth without needing to refinance. Most lenders allow this switch during the loan term. If your current loan structure isn't working for where you are now, you can explore investment loan refinancing options that better suit your repayment goals.
Lump Sum Repayments from Tax Refunds or Bonuses
One-off payments made directly to the loan principal reduce the balance immediately and cut the interest calculated from that point forward. A $5,000 tax refund applied to a $350,000 loan reduces the principal by that amount and saves interest on $5,000 for the remaining life of the loan.
For rentvestors, annual tax refunds can be significant due to deductions on loan interest, property management fees, and depreciation. Rather than spending that refund, directing it back to the loan compounds the benefit. You've already claimed the deduction, and now the refund reduces the debt that generated it.
This works particularly well on the variable portion of a split loan or on any loan without early repayment restrictions. Check your loan contract for any cap on additional payments before committing the funds.
Refinancing to a Lower Rate and Keeping Repayments the Same
If your current rate is higher than what's available elsewhere, refinancing to a lower rate reduces your minimum repayment. But instead of pocketing the difference, keep paying the same amount you were before. The extra now goes to principal, cutting the loan term without increasing your budget.
Consider a Hobart-based rentvestor with a loan originated three years ago at a rate 0.5 per cent above current market offers. Refinancing saves them $150 per month in interest. If they continue paying the old amount, that $150 each month reduces the principal faster than the original loan would have allowed.
Refinancing costs include application fees, valuation fees, and potentially discharge fees from your current lender. In Tasmania, properties in areas like Sorell or Bridgewater may require a full valuation rather than an automated desktop assessment, which adds to upfront costs. The refinance makes sense when the total interest saved over the remaining loan term exceeds those upfront costs. Our loan health check can help you model whether refinancing delivers a net benefit in your situation.
Paying Fortnightly Instead of Monthly
Switching from monthly to fortnightly repayments means you make 26 half-payments per year instead of 12 full payments. That's the equivalent of 13 monthly payments rather than 12, and the extra payment goes straight to principal.
This strategy works without requiring any change to your budget. If your monthly repayment is $2,400, you'd pay $1,200 fortnightly. Over the year, you've made an additional $2,400 principal repayment without feeling a significant cash flow impact in any single fortnight.
Most lenders allow fortnightly repayments on both owner-occupied and investment loans. Check whether your lender applies the fortnightly payment immediately or holds it until the monthly due date. Immediate application reduces your interest faster.
Redirecting Rental Income Directly to the Loan
If your investment property is generating positive cash flow after expenses, you can direct part or all of that surplus to the loan principal. This reduces the balance faster without using your own salary or savings.
For a Tasmanian rentvestor with a property in Latrobe or Sheffield, rental yields can be higher than metro markets, leaving a buffer after loan repayments, rates, insurance, and management fees. That buffer can either sit in your offset or be paid directly onto the loan. Paying it onto the loan reduces debt faster but removes flexibility. Keeping it in the offset preserves access while still reducing interest, though as noted earlier, this reduces your tax deduction.
The calculation depends on your marginal tax rate and how long you plan to hold the property. We work through these trade-offs with clients regularly, particularly those holding regional Tasmanian property while renting in Hobart. If you're managing cash flow across both rent and a mortgage, understanding how rental income is assessed by lenders can also help when planning your next purchase or refinance.
Avoiding Loan Redraw Traps That Slow Progress
Many loans with a redraw facility let you access any extra repayments you've made above the minimum. That sounds useful, but frequent redraws undo the progress you've made and restart the interest calculation on the withdrawn amount.
If you're likely to dip into extra repayments regularly, an offset account is a better fit. The money remains accessible but doesn't technically reduce the loan balance, so withdrawing it doesn't trigger any recalculation. For investment loans, this also keeps your deductible interest higher, which may suit your tax position depending on your circumstances.
Some lenders also limit how much you can redraw or charge fees for each withdrawal. Check your loan terms before assuming redraw is available without restriction.
Reviewing Your Loan Structure as Your Income or Goals Change
A loan structure that worked when you bought your first investment property might not suit your situation three or five years later. Income changes, rental markets shift, interest rates move, and your goals evolve.
For a Tasmanian rentvestor who initially borrowed with a high LVR and interest-only repayments, moving to principal and interest once equity builds can accelerate debt reduction. If you've built enough equity, refinancing may also remove LMI from future borrowing or improve your rate.
Similarly, if you're planning to transition from rentvesting to owner-occupier, restructuring your loan in advance can make that move smoother. We cover that process in detail in our guide on transitioning from rentvesting to owner-occupier. Regular reviews catch these opportunities before they become missed opportunities.
Call one of our team or book an appointment at a time that works for you. We'll review your current loan structure, repayment options, and refinancing opportunities to help you pay off your loan faster without stretching your budget.
Frequently Asked Questions
Do fortnightly repayments actually make a difference to my loan term?
Yes. Paying fortnightly instead of monthly results in 26 half-payments per year, which equals 13 full monthly payments rather than 12. That extra payment each year goes directly to principal and reduces both your loan term and total interest paid.
Should I use an offset account or pay extra directly onto my investment loan?
It depends on your tax position and future plans. Paying directly onto the loan reduces debt faster but lowers your tax-deductible interest. An offset reduces interest while keeping funds accessible and preserving your deduction. If you're planning to convert the property to owner-occupied later, an offset often makes more sense.
Can I make extra repayments on a fixed rate loan?
Most fixed rate loans allow extra repayments up to a cap, typically between $10,000 and $30,000 per year. Exceeding that cap may trigger break costs. Check your loan contract or speak to your lender before making large additional payments on a fixed loan.
When should I switch from interest-only to principal and interest?
Switching to principal and interest makes sense when your cash flow improves, rental income increases, or your goal shifts from minimising repayments to paying the loan off faster. Most lenders allow this switch during the loan term without refinancing.
Is refinancing worth it if I only save a small amount on the rate?
It depends on the total interest saved over the remaining loan term compared to refinancing costs. Even a 0.3 to 0.5 per cent rate reduction can save thousands over ten or fifteen years. Factor in application fees, valuation costs, and any discharge fees from your current lender before deciding.
