Smart Ways to Use Extra Repayments on Variable Rates

A variable rate investment loan with full offset and redraw lets you reduce interest while keeping cash accessible.

For periodontists managing cash flow around invoicing cycles, equipment purchases and practice expansion, this flexibility matters. You can pay down the loan when income is strong and access those funds again if you need to restock inventory, upgrade technology or top up working capital without reapplying for finance.

Why Variable Rates Suit Periodontists Holding Established Properties

Variable rates let you make unlimited extra repayments without penalty and access that cash through redraw or an offset account. Most lenders allow full redraw on variable investor loans, though some cap it or apply fees. If you plan to move funds in and out, confirm the redraw terms before applying.

With negative gearing changes taking effect from mid-2027, holding an established property acquired after 12 May 2026 means rental losses will be quarantined and only offset against future rental income or capital gains. Locking into a long fixed term now removes the option to respond if your circumstances change or if you decide to sell before settlement, refinance to access equity for a new build, or adjust your repayment approach once the new rules take effect.

How Offset Accounts Work on Investment Loans

An offset account is a linked transaction account. Every dollar in the account reduces the balance on which interest is calculated. If you have a loan amount of $600,000 and $50,000 in offset, you pay interest on $550,000.

Not all lenders offer 100 per cent offset on investor loans. Some cap it at 40 or 60 per cent, and others don't offer it at all. For periodontists with irregular income or large upfront outlays, a full offset account means you can hold surplus cash without losing the tax deduction on your interest. The loan balance stays the same, so your claimable interest expense doesn't fall.

Redraw works differently. You make extra repayments directly onto the loan, reducing the principal. You can withdraw those extra amounts later, but the withdrawn funds are no longer reducing your interest charge. Redraw suits borrowers who want to pay down debt and only access funds occasionally. Offset suits those who want flexibility without changing the loan balance.

Interest Only Periods and Extra Repayments

Most lenders allow interest only terms of up to five years on investment loans. During that period, your minimum repayment covers interest alone. You can still make extra repayments if the loan allows it, and those extras reduce the principal even though your contracted minimum stays the same.

Consider a periodontist who borrows on interest only to hold the monthly commitment lower while building out a new practice. Income is variable in the first 18 months. Once referrals stabilise and cash flow improves, they start making additional principal repayments through the offset account. The loan remains interest only by contract, but the effective balance falls and so does the monthly interest charge. When the interest only period ends, the principal and interest repayment is calculated on a lower balance.

If you want to keep the interest only structure but reduce the actual interest cost, extra repayments with full offset or redraw give you that control. Switching to principal and interest early sacrifices flexibility unless the lender allows you to revert or redraw what you've paid.

Proposed Tax Changes and the Value of Flexibility

From 1 July 2027, negative gearing on established residential properties acquired after 12 May 2026 will be limited. Losses can only be offset against residential rental income or capital gains, not general income. Properties held before that date are exempt until sold. New builds retain the existing negative gearing treatment.

If you're holding an established property under the new rules, rental losses accumulate and carry forward. You may choose to reduce those losses by paying down the loan, or you may prefer to hold surplus cash in offset so the loan balance and your deductible interest remain unchanged. A variable rate loan with full offset lets you do either without refinancing.

A fixed rate loan removes that option. If you lock in for three or five years, you can't make extra repayments beyond a small annual cap, typically $10,000 to $30,000 depending on the lender. Redraw is usually blocked entirely on fixed investment loans.

Debt Recycling and Offset Account Strategy

Debt recycling involves replacing non-deductible debt with deductible debt. Periodontists often use this approach after paying down an owner-occupied loan, then refinancing to release equity for investment purposes. The new loan is used to acquire an income-producing asset, so the interest becomes tax deductible.

If you're planning to debt recycling, a variable rate investment loan with offset gives you the flexibility to move funds as needed while keeping the loan balance intact. You can hold cash in the offset account to reduce interest on the investment loan without reducing the deductible amount, then draw that cash out if you need to top up equity or fund another acquisition.

This approach works particularly well when paired with investment loan refinancing, especially if your current loan has limited offset functionality or restrictive redraw terms.

Structuring Loans for Multiple Properties

If you're expanding your property portfolio, separating each property into its own loan split makes it easier to manage repayments, track deductions and sell individual assets without disturbing the others. Each split can have its own rate type, offset account and repayment structure.

In our experience, periodontists with two or three investment properties often set one loan as interest only with offset, and another as principal and interest with redraw. The interest only loan holds the cash buffer, while the second loan is gradually paid down. If one property is sold, the loan linked to that security is discharged without affecting the other.

Lenders typically allow up to ten splits within a single facility, though offset accounts may be limited to one or two per loan depending on the lender. If you need more than two offset accounts, confirm availability before applying.

What Lenders Allow and What They Don't

Not all variable rate investment loans are structured the same way. Some lenders offer unlimited redraws with no fee. Others cap redraw at 80 per cent of extra repayments or charge a processing fee each time you withdraw. A few block redraw entirely on investor loans, even if the loan is variable.

Offset accounts also vary. Most major lenders offer 100 per cent offset on variable investment loans, but some cap it or don't offer it at all. Non-bank lenders often provide more flexibility on redraw and offset, but their rates may be higher and they're not subject to APRA serviceability buffers, which can affect borrowing capacity.

If you're borrowing above 80 per cent loan to value ratio, Lenders Mortgage Insurance applies. Some lenders cap LMI at 90 per cent for investors, while others allow 95 per cent if you meet their criteria. Periodontists with stable income and low other debt often qualify for LMI waivers up to 90 per cent with certain lenders. More detail on that is covered under LMI waivers for dentists.

When Fixed Rates Make Sense Despite the Trade-Off

Fixed rates suit borrowers who want certainty and don't plan to make extra repayments. If your priority is locking in the rate and knowing exactly what the repayment will be for the next few years, a fixed term may be appropriate. You lose flexibility, but you gain predictability.

Some periodontists split their loan, fixing part and leaving part variable. This approach provides rate protection on a portion of the debt while keeping offset and redraw available on the variable portion. The fixed split typically has a small annual extra repayment allowance, usually $10,000 to $20,000, which may be enough if you only want to make occasional lump sum payments.

Before committing to a fixed rate, confirm the break cost calculation with your lender. If rates fall or you need to refinance or sell, the break cost can run into tens of thousands of dollars depending on the amount fixed and the term remaining. More on that is outlined under fixed rate expiry.

Call one of our team or book an appointment at a time that works for you. We'll walk through your current loan structure, compare offset and redraw terms across lenders, and help you set up a variable rate loan that fits your cash flow and tax position without locking you into terms that don't suit how you work.

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