The name on the holding statement decides who claims the deduction, who declares the income and who pays the capital gains tax years later. Here is how to settle it before the first parcel is bought.
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Most couples spend weeks on the loan structure and about 30 seconds on the form where they nominate the account holder. The second decision often matters more. For couples, debt recycling turns on investment ownership deductibility, and the name that goes on the holding statement or the title decides who claims the deduction, who declares the income and who pays the CGT years later.
The lending mechanics do not change whichever name you choose. Existing non-deductible home loan debt is converted into deductible investment debt, and total borrowings stay where they were. What ownership changes is whose tax return the result lands in.
What does increase is concentration. Borrowed funds sit in market-linked assets secured against your home, so a structure that is clean for tax purposes is still a leveraged one, and a fall in the portfolio does not reduce the loan behind it.
That matters most when partners sit on different marginal rates. How much a deduction returns depends on the rate it offsets, which is the first calculation a broker for high-income earners runs where one partner sits near the top rate. Ownership decides whose rate applies to it.
Five things get confused in this decision, and only one is decisive:
The Australian Taxation Office (ATO) attributes investment income and the related expenses to each co-owner according to their legal interest in the asset. A private agreement between partners about who will really take the income or carry the interest has no effect for tax purposes. Taxation Ruling TR 93/32 sets this out for rental property, and the same reasoning is applied to a share portfolio held in one name or two.
The ATO also works on the basis that, between spouses, the equitable interest matches the legal title unless there is strong evidence otherwise. Whoever appears on the asset claims the deduction, in the proportion shown there.
Before ownership comes the purpose test. Interest is generally deductible to the extent the borrowed money was used to produce assessable income. Funds that go into a diversified exchange traded fund (ETF), a managed fund or a rental property satisfy it. Funds that touch a car or a holiday do not, and once purposes are mixed in one account, the interest has to be apportioned for the life of the loan.
Fail the purpose test, and there is no deduction for either partner.
The names on the loan contract do not decide the deduction. Lenders routinely require both partners as borrowers because both incomes are needed to service the debt, even where only one of them will own the asset. That is a credit decision, not a tax one.
Where the loan is joint and the asset is owned by one partner, what matters is who genuinely bears the cost. The ATO's worked example describes a sole owner whose lender insisted her spouse co-borrow. She claims 100% of the interest, supported by a legally enforceable written agreement making her liable for the repayments and by bank statements showing those repayments left her own account. The same evidence decides who claims the interest in any split-name structure.
The ATO looks for a legally enforceable written agreement that exists at the time the loan is taken out, states that the owner is liable for the repayments and interest, and is witnessed. A note written afterwards carries far less weight, and no agreement creates a deduction on its own. It records the intention for anyone reviewing the arrangement years later.
Three structures cover nearly every couple, and each one carries a different trade-off:
Interests are equal by definition, so income and expenses divide 50/50 no matter who paid what. On the death of one partner, the interest passes to the survivor by survivorship, outside the will. It is the simplest option and the one that cannot be tuned. Where one partner is at 47% and the other at 17%, half the deduction lands on the lower rate by design.
Shares can be unequal, commonly 80/20 or 90/10, and income and deductions follow those shares. The proportions are set when the asset is acquired and recorded on the title or the holding record. The interest passes under the will. It gives couples control, at the cost of one more decision to make and document.
One name and one return keep all of the deduction and all of the income in the same place. It produces the cleanest arithmetic when the rate gap is wide, and it is the most exposed structure when the owner's circumstances change.
| Ownership structure | Income and deductions | On the death of one owner | Where it tends to fit |
|---|---|---|---|
| Joint tenancy | Attributed 50/50 and fixed | Passes to the survivor, outside the will | Similar incomes, or a preference for simplicity |
| Tenancy in common | Attributed by the shares recorded on the asset | Passes under the will | Different marginal rates, or a need to weight one side |
| Sole ownership | Attributed entirely to the one owner | Passes under the will | Wide rate gaps, or a need for asset protection |
General guide only. Which structure suits a household depends on its own circumstances, and the estate consequences should be confirmed with a solicitor.
The figures below are illustrative and use 2026-27 resident rates including the 2% Medicare levy. Assume Priya earns $210,000 and Sam earns $38,000, they hold a $250,000 investment split at 7% interest producing $17,500 of interest for the year, and the portfolio pays 3.5% in fully franked dividends. The point is the pattern, not the precise dollars:
A deduction returns tax at the marginal rate of whoever claims it.
| Ownership of the portfolio | Marginal rate applied | Value of $17,500 of deductible interest |
|---|---|---|
| Priya only | 47% | About $8,225 |
| Priya and Sam, 50/50 | 47% and 17% | About $5,600 |
| Sam only | 17% | About $2,975 |
Illustrative only and a general guide. Rates include the 2% Medicare levy. Levy thresholds, offsets and the size of the deduction relative to income can move these figures, and none of them is a forecast or a promise of any result.
On this assumption alone, roughly $5,250 a year separates the two sole-ownership options.
The income pulls the other way. A $250,000 portfolio yielding 3.5% pays about $8,750 in fully franked dividends, carrying around $3,750 of franking credits and grossing up to about $12,500.
In Priya's name, that grossed-up amount attracts roughly $5,875 of tax, reduced by the $3,750 credit, leaving about $2,125 to pay. In Sam's name it attracts roughly $2,125 of tax, and the credit exceeds it, leaving about $1,625 refundable. Same portfolio, a $3,750 swing, driven only by the name on it.
Netting the two sides on these assumptions puts Priya's sole ownership around $6,100 ahead for the year, joint tenancy around $5,350 and Sam's sole ownership around $4,600. The higher-rate name wins while interest exceeds grossed-up income.
That advantage narrows as the split is paid down and the portfolio grows, and it reverses once the assets produce more than the loan costs. Debt recycling is built to reach that point, so a choice optimised for year one can be working against the household by year 15. Your accountant should be looking at the whole horizon, not just the first tax return.
The gain follows ownership on the same basis as the income. From 1 July 2027, the 50% CGT discount for resident individuals, trusts and partnerships is replaced by cost base indexation on assets held at least 12 months, and resident individuals pay a minimum 30% tax on capital gains accruing from that date, under changes that received Royal Assent on 26 June 2026. Transitional rules preserve the existing treatment for gains accrued to 30 June 2027, and income support recipients are excluded from the minimum tax. Those changes reshape the capital gains treatment on any eventual sale.
For couples, that narrows a long-standing reason to hold in the lower earner's name. A 30% floor on gains accruing from that date limits how much of the CGT advantage a low marginal rate can still deliver. It does not remove the ownership question. It shifts weight off the sale side and onto the income and deduction side.
Couples recycling into an established residential property bought after 7:30pm AEST on 12 May 2026 face a further constraint. From 1 July 2027, net rental losses on those properties can only be offset against residential rental income or gains from residential property, with any excess carried forward. Where that applies, putting the property in the higher earner's name to absorb the loss stops doing the job it was chosen for. Recycling into shares, ETFs and managed funds sits outside the 2026 Budget changes altogether.
Income moves. Ownership does not. Structures that look obvious on two full salaries behave differently when one of them stops, and a strategy running 10 years or more will usually meet at least one of these:
A career break usually runs one to two years against a much longer horizon. A deduction sitting in the working partner's name keeps its value throughout. A deduction sitting in the other partner's name loses most of its value temporarily. A dip that short rarely justifies restructuring, because the cost of changing ownership is permanent while the income change is not.
Where the owner is the one whose income falls, deductions can exceed income. The excess becomes a tax loss carried forward in that person's own return. It cannot be transferred to a spouse, whoever pays the bills. The deduction is deferred until that person has income to use it against, which may be several years.
Serviceability shifts at the same time. A household refinancing or adding a further split is assessed on current income, so the next tranche of recycling can become unavailable in exactly the year it looked most attractive.
Both incomes fall, usually for good. The case for holding income-producing assets in the lower-taxed name strengthens on the income side, while the 30% minimum tax narrows it on the gains side. The timing of any sale is a conversation for a registered tax agent and not something to lock in at the point of choosing ownership.
A self-employed partner can swing between brackets year to year. Fixing the whole deduction on the volatile income risks wasting it in a lean year and underusing it in a strong one. A tenancy in common split is often where those households land, trading a slightly smaller deduction in the good years for a steadier result across the cycle.
Ownership can be changed. The question is what it costs, and most of the cost is unavoidable:
Transferring an asset to a spouse is a disposal for CGT purposes, generally taken at market value even where no money changes hands. There is no general spousal rollover outside a relationship breakdown dealt with by a court order or a binding financial agreement. A portfolio that has doubled produces a real tax bill simply to move it into the other name.
For property, state duty applies on top. In Queensland, the spouse exemption covers transferring an interest in a home that will be the couple's principal place of residence and is held equally afterwards. An investment property does not qualify, so duty is assessed on the market value of the interest transferred. Rates and exemptions differ by state and change over time, so the Queensland Revenue Office position is the starting point for a Queensland property only.
Where one partner buys out the other's share, borrowing used for that purchase can generally support a deduction for the buyer, because the funds were used to acquire an income-producing asset. The existing split then has to be unwound and rebuilt so the two purposes never share an account. Done carelessly, this is where redraw contamination creeps in and clean loan splits turn into mixed-purpose accounts.
Changing names triggers brokerage on the sale and repurchase of listed holdings, legal and settlement costs on property, lender fees to discharge and re-establish splits, plus the accounting time to redo the tracing. None of these is large on its own. Together they routinely exceed a year or two of the tax difference the change was meant to capture.
Tax is one input. Several others belong in the conversation before any form is signed:
A partner running a business or working in an occupation carrying personal liability exposure sometimes holds fewer assets deliberately. That is a legal question with its own rules, including look-back provisions where assets are moved once a risk is foreseeable. Raise it with a solicitor before the structure is settled on tax grounds alone.
Joint tenancy passes to the survivor automatically and sits outside the will. Tenancy in common and sole ownership both pass under it. For blended families and second relationships, that single difference often decides the structure by itself, whatever the marginal rates suggest.
Lenders assess the household. Holding an asset in one name does not reduce what the credit team looks at. Ownership and borrowing are separate decisions.
Sole ownership concentrates a growing portfolio in one person's name. Separation outcomes are dealt with under family law and not decided by the title alone, but a structure both partners are comfortable with tends to survive the 10 to 20 years the strategy needs. A structure one partner resents tends not to.
Ownership sits with your accountant and your financial adviser. What the lending controls is whether the loan supports their recommendation or quietly undermines it:
The owner is settled before the splits are built, not after settlement. A split created first and allocated later is the version that produces mismatched accounts, because the loan has already been written by the time the decision is made.
Each owner needs their own identified split where the lender allows it, so a jointly held parcel and a sole-owned parcel are never funded from the same account. Repayments on a sole-owned split should also leave an account in that owner's name, which is the detail that most often decides whether the deduction holds up years later.
General guide only. What a lender will allow varies by product and policy, and the structure that suits your household depends on your circumstances.
Somewhere between loan approval and the first transfer, one of you will be asked whose name goes on the account. By then you should know the answer and why, because that reasoning is what holds the structure together when incomes move.
You do not need to forecast the next 20 years to get this right. You need a structure that suits the household you have now, reasoning that is written down, and a loan built to match. That is what stops a sound strategy failing on a detail nobody checked.
Settle it now and the paperwork that follows is administration, not a decision you carry into every future conversation about the portfolio.
Once you and your accountant settle whose name goes where, we build the splits so the lending records match the ownership from the first transfer. Reach out before the first parcel is bought.
Book a free call →No. Lenders often require both partners as borrowers for servicing even where the asset will be held in one name. Where the names differ, keep the repayments coming from an account in the owner's name and hold the agreement recording who is liable, because that is the evidence the deduction rests on.
Yes, though it is usually a disposal for CGT purposes at market value, and for property it can also attract state transfer duty. There is no general spousal rollover outside a relationship breakdown.
Each owner claims their share, which for joint tenants means 50% each, regardless of which account the money left. Paying more than half does not buy more than half the deduction, and there is no way to reallocate it at tax time.
No. Ownership decides whose return the deduction and the income land in, not how much is borrowed. Lenders still assess both incomes and both liabilities, so the household's borrowing capacity is unchanged by the name on the holding statement.
It stays with them and may exceed their income for that year. The excess becomes a tax loss carried forward in their own return, usable against their future income, and it cannot be shifted to a spouse.
Company and trust structures sit outside a broker's lane. They carry different tax, cost and compliance profiles, and the Government has announced a 30% minimum tax on discretionary trusts from 1 July 2028, with Treasury consulting on the design and no legislation yet introduced, so the comparison belongs with your accountant. From the lending side, a non-individual borrower changes which lenders will participate and how servicing is assessed, which affects what the strategy costs to run.
For deductibility, no, because home loan interest is not deductible for either partner. It matters for credit assessment. Having both names on the home loan is standard where both incomes support it, and it makes no difference to how a separate investment split is treated. What matters is that the investment split stays clearly identified and never shares an account with private borrowing.
Why the deduction is worth most at the top marginal rate.
Read more → TaxWhat happens to your tax when you sell the assets.
Read more → 2026 BudgetThe budget change and what it means for recyclers.
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