Will I Lose Negative Gearing If I Refinance? 2026 Rules

If you bought your rental property before the 12 May 2026 Budget cut-off, you have probably wondered whether shopping around for a better rate could quietly cost you your negative gearing. It is a fair worry. The 2026 negative gearing changes were the biggest shake-up to property investment tax in decades, and plenty of investors have been holding off on a refinance because they are not sure what might trip a wire.

Here is the short version: simply changing lenders on the same investment property, with the same owners and the same loan purpose, does not generally remove grandfathered negative gearing treatment. The protection under the Budget 2026 rules attaches to the property and who owns it, not to which bank holds the mortgage. What can create problems is what sits around a refinance: pulling out extra cash for personal use, adding or removing someone from the title, or turning your home into a rental.

There is a second issue that catches people out. Tax grandfathering and lender approval are two different things. Even if your tax position is safe, several Australian lenders changed their serviceability rules through 2026, so the amount you can borrow may look different to what it did a year ago. Those two conversations need to happen separately.

This article walks through which properties qualify under the transitional rules, the refinance scenarios that carry real risk, and what to check before you sign anything. If you would like a hand comparing lender policies and keeping your loan splits clean, the team at Kingslend Financial works with borrowers across Sydney and remotely on 1300 068 880, or you can send an enquiry through kingslend.com.au and get a reply within three business hours.

The Short Answer: Refinancing Does Not Usually Reset Grandfathering

Grandfathering under the negative gearing reform is tied to owning an established residential property at the cut-off time, not to the loan sitting behind it. A straight swap of one investment property loan for another, same property, same owners, same purpose, generally leaves your tax treatment where it was.

Why A Like-For-Like Refinance Is Generally Different From A New Property Purchase

Think about what actually changes in a like-for-like refinance. You still own the same residential property. You bought it at the same time. Nobody new goes on the title. The only thing that changes is which lender you pay interest to, and possibly the rate.

Buying a different property is a completely separate event. A new purchase after the cut-off starts under the new regime, because you acquired that asset later. That is the real dividing line: acquisition date and ownership, not lender name.

In practice, this is one of the more common questions investors bring to a broker after Budget night. Someone is paying an old investor rate well above market, they have been sitting on it for two years out of caution, and the money they have lost by waiting is often larger than anything the tax rules would have cost them.

The Conditions That Need To Remain Consistent

Keep these four things steady and a refinance is usually straightforward from a tax point of view:

• Same property. You are refinancing the loan on the same established residential property you already own.
• Same owners. The names and ownership shares on the title do not change.
• Same purpose. The new borrowing replaces investment debt, dollar for dollar.
• Same use. The property stays rented, or genuinely available for rent.

Cosmetic changes do not usually matter. Switching property managers, doing a kitchen renovation, changing tenants or moving from one bank to another all sit outside the trigger points.

Why A Lender’s Approval Is Separate From Your Tax Treatment

This is worth saying plainly, because the two get muddled constantly. The Australian Taxation Office decides how your interest and rental losses are treated. Your lender decides whether it will lend you the money and how much.

A refinance can be perfectly fine on the tax side and still be declined, or approved for a smaller amount, because of a lender’s credit policy. That is not a tax problem. It is a serviceability problem, and it is solved by comparing lenders rather than by tax advice. We cover that in more detail further down.

Which Properties Qualify Under The 2026 Transitional Rules

The negative gearing rules now split investors into groups based on one date and one asset type. What you held at 7:30pm AEST on 12 May 2026 matters far more than what you do with your loan afterwards.

The 12 May 2026 Contract And Ownership Cut-Off

The line in the sand is 7:30pm AEST on 12 May 2026, the evening of the 2026 Federal Budget. If you owned an established residential property at that moment, or you had already signed a binding contract to buy one, that property is generally grandfathered.

Grandfathered means the old treatment continues. Net rental losses on that property can still be claimed against your salary and other income, and there is no expiry date attached to it. The protection lasts while you keep owning the property.

Two practical notes from experience here. First, a signed contract counts, even if settlement happened weeks or months later, so dig out your contract date rather than your settlement date. Second, keep a copy of that contract somewhere you can find it in ten years. It is the single most important piece of paper you own for this purpose.

Grandfathered Established Properties Versus New Builds

For anything bought after the cut-off, the property type drives the outcome.

Quarantined does not mean lost. Losses on an affected established property can generally be carried forward and used against other residential rental income or against a later capital gain. The benefit is deferred rather than deleted, which matters a lot for cash flow planning.

How The Rules Apply From 1 July 2027

The tax legislation passed in 2026, but the restrictions on quarantining losses commence from 1 July 2027. That creates a transition window.

If you sign a contract for an established property between 13 May 2026 and 30 June 2027, you generally get normal treatment for the remainder of that period, then the new rules apply to losses from 1 July 2027 onwards. Grandfathered properties are not affected by that date at all.

Residential Property, Commercial Property And SMSF Considerations

The changes target residential property investments. Commercial property sits outside the negative gearing restrictions, so commercial investors are not caught by the quarantining rules in the same way.

An SMSF holding residential property has its own set of considerations, and the interaction with borrowing inside super is not something to work through from a blog post. If you hold property in a trust, company or self-managed super fund, get the specific advice. The general principles above are a starting point, not an answer for your structure.

Refinance Changes That Can Affect Deductibility Or Protection

A plain refinance is low risk. The risk comes from the extras people bundle into a refinance: pulling out equity, tidying up the title, or changing how a property is used. Each of those can change your deductions or your grandfathered status, and they are worth handling deliberately.

Cash-Out, Redraw And Mixed-Purpose Borrowing

Interest deductibility follows what the borrowed money is used for. This is the rule that catches more investors than anything else.

Say you refinance a $500,000 investment loan and take an extra $100,000 to renovate your own home. The interest on that $100,000 is not deductible, because the money was spent on a private asset. If both amounts sit in the same loan, you now have a mixed-purpose loan, and every repayment gets messy to apportion for years.

The practical fix is simple: use separate loan splits. One split for the original investment debt, another for the new personal-purpose borrowing. Two accounts, two clear paper trails, no apportionment headaches at tax time.

A few habits worth building:

• Never redraw from an investment loan for personal spending. Use a separate split or an offset account instead.
• If you borrow extra to buy another investment or improve the rental, keep that split separate too, so each purpose is traceable.
• Keep loan statements and settlement figures showing exactly what the new loan replaced.

Adding Or Removing An Owner From The Title

This is where grandfathering gets genuinely fragile. Changing who is on the title is an ownership change, and an ownership change is likely to end grandfathered status for the interest transferred, even between spouses.

A refinance often prompts this. One partner has a lower income, the other is self-employed, and someone suggests restructuring the names to make the numbers work. That may have made sense before the reforms. Now it may cost the property its protected treatment, and it can also trigger stamp duty and capital gains tax consequences.

If a lender tells you a title change would help the application, stop and get tax and legal advice before agreeing. Sometimes the answer is a different lender rather than a different owner.

Ownership Transfers, Separation And Estate Events

Life events raise the same issue. A transfer following a separation, a transfer into a trust or company for asset protection, or a property passing through an estate all involve ownership changing hands.

How each one lands depends on the specific transfer and the final application of the rules. The general principle is that grandfathering protects the property while the same owners hold it. Any transfer needs specialist advice first, not after the transfer is done. If a refinance is happening alongside a separation, sequence the tax advice before the loan application.

Turning A PPOR Into A Rental Property

Moving out of your home and renting it out is a change of use, not a change of ownership. Interest becomes deductible from the date the property genuinely becomes available for rent, based on the purpose of the original borrowing.

Two things to watch. Refinancing the home loan when you move out does not create fresh deductible debt for the amount you originally borrowed to live there; deductibility depends on the use of the property and the purpose of the funds. And if you borrow against that property to buy your new home, the interest on that new borrowing is private and not deductible, so split it.

There is also a timing question worth raising with your accountant: whether the property was acquired before or after 12 May 2026 affects how its losses are treated once it becomes a rental.

What A Refinance Means For Borrowing Capacity And Serviceability

Your tax position may be untouched while your borrowing capacity has shifted noticeably. Through 2026, lenders including Macquarie Bank, NAB and Westpac updated how they treat negative gearing in serviceability, and the changes were not uniform.

How Lenders Assess Rental Income And Rental Losses

Lenders do not just compare your income to your repayments. They shade the rental income, typically counting around 70% to 80% of gross rent to allow for vacancy and costs, then load your existing debts at a stress-tested rate.

Historically, many lenders also added back the tax benefit of a net rental loss, treating your expected refund as extra income. That “add-back” quietly boosted borrowing capacity for negatively geared investors. Where a lender no longer applies it, or applies it only to grandfathered or new-build properties, the maximum loan figure drops even though nothing about your actual finances changed.

Why Grandfathering Does Not Guarantee Refinance Approval

Grandfathering is a tax concept. Credit policy is a commercial decision by each lender.

A refinance is a new loan application. It gets assessed against current policy, current rates and current buffers, not the policy that existed when you first borrowed. Investors who took out an interest-only loan at low rates in 2020 or 2021 are the most likely to feel this, because their original approval was calculated on a very different basis.

Being grandfathered helps in one specific way: some lenders will only factor a negative gearing benefit into serviceability where the property qualifies under the transitional rules or is an eligible new build. Having documentation ready to prove your contract date can be genuinely useful in that conversation.

Interest-Only Loans, Stress Tests And Existing Debts

Three things do most of the damage to an investor’s borrowing capacity:

• The stress-test rate. Lenders assess repayments at a buffer above the actual rate, commonly around three percentage points.
• Interest-only periods. An interest-only loan is often assessed on the principal and interest repayments needed over the remaining term, which compresses the calculation considerably.
• Existing debts. Other mortgages, car loans, HECS and credit card limits all reduce the assessed surplus, even if you rarely use the card.

Clearing or reducing unused credit limits before you apply is one of the quickest wins available.

Comparing Lender Policies Before You Apply

Policy differences between lenders are wide right now, and they change month to month. One bank may still add back a portion of your rental loss, another may not, and a third may treat grandfathered and post-cut-off properties differently.

This is where a broker earns their keep. Kingslend Financial, based in Sydney CBD and North Parramatta, can model serviceability across multiple lenders before an application is lodged, which avoids the credit enquiries that come from applying and being declined. Note that a broker works on lending and loan structure; the tax conclusions still need to come from your accountant.

Tax, Cash Flow And CGT Issues To Review Before Switching Lenders

A lower rate improves your cash position but also shrinks your interest deduction, so the net benefit is smaller than the rate saving suggests. And with cost base indexation and a 30% minimum tax on capital gains applying to newly acquired assets from 1 July 2027, the exit maths deserves a look too.

Separating A Tax Deduction From A Real Cash Loss

A negatively geared property costs you real money. The deduction returns a portion of it, based on your marginal tax rate, not all of it.

Here is the arithmetic on a $10,000 annual rental loss:

A refinance that cuts your interest bill by $4,000 reduces your deduction, so you might keep around $2,400 of that after tax on a 39% rate. Still a clear win, just not the full $4,000. Investors who assume the whole saving flows through often overestimate the benefit.

Expenses, Depreciation And Your Rental Position

Your rental position is the total of income against deductible expenses. Loan interest is usually the biggest, followed by property management fees, council rates, insurance, and repairs and maintenance.

Depreciation is the odd one out because it is a deduction without a cash outflow. Division 43 covers capital works on the building, and Division 40 covers plant and equipment such as air conditioners and carpets. A depreciation schedule from a quantity surveyor typically pays for itself, and it stays valid after a refinance because it relates to the property, not the loan.

Carried-Forward Losses On Affected Established Properties

For an established property bought after the cut-off, losses from 1 July 2027 are quarantined rather than lost. They can generally be applied against other residential rental income or against a future capital gain on residential property.

That changes how you think about portfolio balance. A positively geared older property can absorb losses from a newer one. Keep clean records of accumulated losses year by year, because you may be carrying them for a long time before they get used.

CGT Treatment When You Eventually Sell

For assets acquired before the reforms take effect, the existing capital gains tax rules, including the 50% CGT discount, generally continue to apply. For newer acquisitions, the discount is replaced by cost base indexation and a 30% minimum tax rate on capital gains.

The practical effect is that indexation ties your tax bill to inflation rather than a flat discount. This can favour long holds in low-inflation periods and hurt in others. Refinancing does not affect your cost base, but if selling is on your five-year horizon, the sell-versus-hold sums are worth running with your accountant before you lock into a new fixed rate or a break-fee-heavy product.

A Sensible Refinance Review Before You Commit

A useful refinance review runs on two tracks at once: confirm nothing about ownership or loan purpose is changing, then check whether the new rate, repayment type and structure actually improve your position. Get both right and the decision is usually clear.

Confirm The Existing Loan Purpose And Property Ownership

Before you talk to a lender, pull out the paperwork. Find the purchase contract with its date, the current loan statements, and a title search showing the exact owners and ownership shares.

Then answer one question honestly: is anything about ownership or purpose changing? If the answer is no, you are dealing with a straightforward refinance. If the answer is yes, that part needs advice before the loan application, not after.

Model The Rate, Repayment And Cash-Flow Outcome

Compare total cost, not headline rate. Include discharge fees, new loan establishment fees, valuation costs, any break costs on a fixed loan, and ongoing annual package fees.

Then work out how long it takes for the savings to cover those costs. Also decide whether you want an offset account, and whether interest-only or principal and interest suits your cash flow and your plans for the property. On an investment loan, an offset can hold surplus funds without contaminating the loan purpose, which is a tidy structure to have in place.

Keep Records And Obtain Specialist Tax And Legal Advice

Records are cheap insurance. Keep the original contract of sale, settlement statements, every loan contract including refinances, evidence of what each split was used for, and your depreciation schedule.

Tax consequences and legal advice belong with qualified professionals. A mortgage broker can structure loans and keep purposes separate; your accountant confirms deductibility and your solicitor handles anything involving the title.

Review Your Investment Portfolio And Future Purchase Plans

A refinance is a good moment to look at the whole investment portfolio. Which properties are grandfathered? Where is rental demand holding up? What is your realistic view on capital growth for each asset?

If another property investment is on the cards, think about sequencing. Using equity from a grandfathered property to buy an established property after the cut-off changes the tax treatment of the new purchase, not the old one, and stamp duty on the new purchase belongs in the numbers. Annual mortgage health checks, the kind Kingslend Financial runs for clients, are a practical way to keep the loan structure matched to your plans rather than drifting.

Frequently Asked Questions

Does refinancing an investment property affect my ability to claim negative gearing deductions?

Generally no. Refinancing an existing investment loan on the same property, with the same owners and the same purpose, does not change your ability to claim rental losses or your grandfathered status. The protection is linked to owning the property, not to which lender holds the mortgage.

Can I increase my loan amount when refinancing and still claim the interest as a tax deduction?

It depends on what the extra money is used for. Interest on funds used for investment purposes is generally deductible, while interest on funds used for private purposes such as a car or your own home is not. Put the new borrowing in a separate loan split so the two purposes never blend.

What happens to my negative gearing position if I refinance from interest-only to principal and interest?

Your deductions still follow the interest you actually pay, so a switch to principal and interest usually means a smaller interest deduction each year as the balance falls. The repayment type does not affect grandfathering, but it does affect your monthly cash flow, so model the change before you commit.

Will changing lenders affect the tax deductibility of my investment loan interest?

Changing lenders alone does not affect deductibility, provided the new loan simply replaces investment debt on the same property. Deductibility follows the use of the borrowed funds, not the name on the loan. Keep documentation showing the new loan replaced the old investment loan dollar for dollar.

Can refinancing costs, such as discharge fees and loan establishment fees, be claimed as deductions?

Borrowing costs on an investment loan are generally deductible, often spread over five years or the loan term if shorter, and there are rules for costs remaining when a loan is discharged early. Treatment varies by expense type, so give your accountant the full settlement statement rather than guessing.

How do I keep records to support negative gearing claims after refinancing?

Keep the original purchase contract with its date, every loan contract including the refinance, statements showing what each split was used for, and receipts for rental expenses. If you have multiple splits, a one-page summary noting each split’s purpose and starting balance makes future tax returns far easier.