The weeks before 30 June are when the tax return gets your full attention, and as an accountant you need no help with the deductions side of an investment property. What is easy to leave on autopilot is the finance behind it: the loan structure, the timing of a refinance, and the way your borrowing capacity resets as a new financial year begins. With variable rates around the 6% mark, lenders still assessing at the actual rate plus 3 percentage points under Australian Prudential Regulation Authority (APRA) rules, and the May 2026 Federal Budget reshaping the new-versus-established decision for future purchases, the end of financial year (EOFY) is a sensible moment to review the lending alongside the ledger.
This checklist covers the finance actions that complement the tax work you already do, the ones a specialist mortgage broker for accountants is usually best placed to action before the year closes. It focuses on loan structure, prepayment mechanics, your equity and capacity for the year ahead, key expiry dates, and what the Budget does and does not change.
Why the Finance Side Deserves an EOFY Review of Its Own
You own the tax position, but the loan that sits underneath it is where a quiet EOFY review tends to pay off, because the structure either supports your deductions cleanly or makes them harder than they need to be. June is also the natural checkpoint, since the new financial year resets the income figure a lender will use and opens or closes refinance timing. The short version of the list looks like this, and we will work through each one:
- Get your loan and interest records in order so deductible interest is unambiguous.
- Review your loan structure for clean deductibility.
- Check whether prepaying interest before 30 June is actually available on your loan.
- Reassess your equity and borrowing capacity for the year ahead.
- Diarise your interest-only and fixed-rate expiry dates.
- Factor the May 2026 Budget into future purchase decisions, not existing ones.
Get Your Loan and Interest Records in Order
The records themselves are familiar territory, but the finance-side value lies in how cleanly they line up with your loan splits. Pull your interest summaries and loan statements from the start of the year, and confirm that any deductible investment borrowing is sitting in its own clearly identifiable account.
Where a property loan and a private loan have become blurred, perhaps through a redraw used for mixed purposes, the interest is no longer cleanly attributable, and you end up apportioning a figure that should have been obvious. Sorting this before you lodge saves the awkward reconstruction later, and it flags any structural fix worth making in the new year.
Review Your Loan Structure for Clean Deductibility
You know the deductibility rules better than most; the real question at EOFY is whether your loan is set up to honour them. Three structural points are worth checking each year.
Separate Splits for Deductible Debt
Investment borrowing belongs in its own loan split, kept apart from any private debt, so the deductible portion is clean and simple to substantiate. A split that has been topped up or redrawn for a private purpose becomes a mixed-purpose loan that must be apportioned for its life, which is exactly the contamination you would warn a client against.
Offset Against the Right Loan
Spare cash held in an offset reduces interest, but where it sits matters for deductibility. Holding the offset against your non-deductible home loan preserves the deductible interest on the investment loan, whereas offsetting the investment loan quietly reduces the deduction you are entitled to claim.
Cross-Collateralisation Worth Unwinding
If your home and investment property are cross-secured, EOFY is a reasonable time to consider whether that still serves you. Separate security generally gives you more flexibility to sell or refinance one property without disturbing the other, and untangling it is easier to plan now than in the middle of a transaction.
Check Whether Prepaying Interest Is Actually Available to You
Bringing a deduction forward by prepaying up to 12 months of interest before 30 June is a well-known strategy, but it rests on a finance condition that is sometimes assumed rather than checked. The strategy only works if your loan actually allows a genuine interest prepayment.
In practice, that usually means a fixed-rate investment loan with a prepayment facility; most standard variable loans do not permit a true 12-month interest prepayment. So if bringing the deduction into this year suits your income position, the loan product itself may need to support it, and that is not something that can be arranged the day before the deadline. Confirm what your current loan allows well before 30 June, so the tax decision is not made impossible by the finance mechanics.
Reassess Your Equity and Borrowing Capacity for the Year Ahead
EOFY finalises the income picture a lender will rely on, which matters more for accountants than for most borrowers. For anyone self-employed or in a partnership, the freshly completed return and notice of assessment can change the borrowing capacity a lender will recognise, for better or worse.
If another purchase is on the horizon, this is the time to take stock: have your property revalued to see your usable equity, and think about the timing of your finalised financials, since lenders typically want around two years of figures and will lean on the most recent. Any new lending or equity release is still gated by serviceability under the assessment buffer, so confirming both your equity and your capacity now lets you plan the next move rather than discover the limit later.
Diarise Your Interest-Only and Fixed-Rate Expiry Dates
EOFY is a convenient annual checkpoint for the dates that tend to creep up on investors. Knowing when each one lands lets you act in good time rather than react.
An interest-only period that expires brings a step up to principal-and-interest repayments, and often a fresh serviceability assessment, both of which are easier to manage with notice. A fixed rate rolling off means a rate reset that may warrant a review or refinance. Putting these dates in the diary now, alongside your EOFY work, keeps you ahead of the repayment changes rather than absorbing them by surprise.
How the May 2026 Budget Changes the Calculus for Future Purchases
You will be across the detail of the negative gearing changes better than we are, so this is the finance-side framing rather than the tax mechanics. The point for planning is that the changes affect future decisions, not what you already hold.
The May 2026 Federal Budget limits negative gearing to new builds from 1 July 2027. Established residential properties purchased after 7:30pm on 12 May 2026 are affected, with rental losses able to be offset only against residential rental income or future capital gains rather than other income. Anything held, or under contract, before that time is grandfathered under the current rules, and new builds remain exempt. From a finance standpoint, the practical effect is that for any future investment purchase the new-versus-established choice now carries an after-tax cashflow dimension that feeds directly into how you structure and service the loan. Your existing property is unaffected, so there is no reason to rush a change to it; the modelling for any new purchase is, of course, yours to run.
A Quick EOFY Finance Checklist
If you action nothing else before the year closes, these are the finance items that matter most.
- Confirm your deductible investment debt sits in a clean, separate split.
- Make sure any offset is working against your non-deductible loan.
- Check whether your loan even allows an interest prepayment, if that suits your year.
- Revalue and reassess your usable equity and borrowing capacity for the year ahead.
- Diarise interest-only and fixed-rate expiry dates.
- Factor the Budget into future purchases only; your existing holding is grandfathered.
Frequently Asked Questions (FAQs)
Can I prepay my interest before 30 June to bring the deduction forward?
Only if your loan permits it. A genuine 12-month interest prepayment generally requires a fixed-rate investment loan with a prepayment facility, and most standard variable loans do not allow it. If the strategy suits your income this year, the loan product may need to support it, so it is worth confirming what is possible well ahead of the deadline.
Should my offset sit against my home loan or my investment loan?
For most investors, against the non-deductible home loan. Holding your offset there reduces the interest you cannot claim, while leaving the deductible interest on the investment loan intact. Offsetting the investment loan instead quietly lowers a deduction you are otherwise entitled to.
Does completing my new tax return change how much I can borrow?
It can, particularly if you are self-employed or a partner, because lenders rely on your finalised financials and notice of assessment. A stronger or weaker recent year shifts the income a lender will recognise, which is why the timing of your finalised figures is worth considering when you are planning a purchase.
Does the 2026 Budget affect my existing investment property?
No. Properties held, or under contract, before 7:30pm on 12 May 2026 are grandfathered under the existing rules. The negative gearing change applies to established properties purchased after that time, takes effect from 1 July 2027, and new builds are exempt, so your current holding continues as it is.
Is EOFY a good time to refinance?
It can be, especially if it lines up with an interest-only or fixed-rate expiry and your finalised income supports a stronger application. That said, the date itself is not a reason to refinance; the trigger should be a better structure, rate, or capacity, with EOFY simply being a convenient time to review.
Do I need a depreciation schedule from my broker?
No, that one stays in your lane and a quantity surveyor’s. A broker’s role is the finance side: the loan structure, equity, serviceability, and refinance timing. Keeping the two functions distinct, your tax work and the lending behind it, is exactly how the EOFY review is most useful.
The Bottom Line
You already own the harder half of this, the tax return itself, so the value of an EOFY finance review is in the part that is easy to neglect: confirming your deductible debt is cleanly structured, knowing whether an interest prepayment is even available to you, reassessing your equity and capacity before the new year resets them, diarising the expiry dates that change your repayments, and factoring the Budget into future purchases while leaving your grandfathered holding alone. Pair your own expertise with a broker who can action the lending side before 30 June, and the finance behind your investment property works as hard as the deductions you are already claiming.