Australian Income Tax 2026-27: What the 15% Bracket Cut Does to Your Loan Size
The 15% bracket cut that took effect on 1 July 2026 puts a modest but real lift into after-tax pay for every Australian resident earning above $18,200, and for a dual-income household sitting around the median full-time wage it frees roughly $400–$500 a year in combined tax saved. That number sounds small, but in a mortgage assessment it flows through the 3% APRA serviceability buffer and the lender’s household-expenditure benchmarks, which means it can add $8,000–$15,000 to the loan size a bank will quote — enough to bridge a shortfall on a first-home purchase in a competitive suburb without changing the deposit. The cut is the first step in a legislated two-stage reduction: the 15% rate applies for 2026-27, and it will fall again to 14% from 1 July 2027. For borrowers, the practical question is not the headline tax saving but how much extra borrowing capacity it unlocks once the lender runs the numbers at an assessment rate roughly three percentage points above the actual loan rate.
What exactly changed in the 2026-27 resident tax scales?
The Australian Taxation Office’s resident individual rates for the 2026-27 income year contain one structural change from the previous year: the bracket that runs from $18,201 to $45,000 is now taxed at 15 cents in the dollar, down from 16%. Everything else in the scale remains as legislated. The tax-free threshold stays at $18,200. The 30% bracket applies from $45,001 to $135,000, with a fixed component of $4,020 plus 30% of the excess over $45,000. The 37% bracket covers $135,001 to $190,000, carrying a fixed $31,020 plus 37% of the amount above $135,000. Above $190,001 the rate is 45%, with a fixed $51,370 plus 45% of the excess. The 2% Medicare Levy sits on top of these rates for most taxpayers, and higher earners without private hospital cover may also face the Medicare Levy Surcharge — a separate drag on net income that we unpack in Medicare Levy and MLS 2026-27: The Quiet Drag on Your Borrowing Power.
For someone earning $70,000 in taxable income, the 2026-27 tax on the $26,800 that falls inside the 15% band is $4,020, compared with $4,288 under the old 16% rate — a saving of $268. At $100,000 the saving is the same $268, because the band ends at $45,000 and the 30% bracket is unchanged. At $45,000 exactly, the saving is $268 as well: the whole band benefits. Below $18,200 there is no tax and therefore no change. The cut does not touch the 30%, 37% or 45% brackets, so high-income earners get the same dollar saving as middle earners — no more, no less.
How does a tax cut translate into a bigger loan quote?
Lenders do not lend against gross salary. They lend against the net surplus left after tax, the Medicare Levy, any HELP/HECS repayment obligation, and a standardised living-expense benchmark the bank applies to your household type. The 2026-27 HELP/HECS repayment system is a marginal one: no repayment is required on repayment income up to $69,528, and above that only the excess is charged at 15% in the first band, which means a graduate earning $80,000 pays 15% on roughly $10,472 — about $1,571 a year — rather than a flat percentage on the whole income. That design preserves more net pay than the old system, and when combined with the 15% tax cut, the after-tax position of a HELP debtor looks materially better than it did two years ago.
When a lender assesses a loan application, it takes the applicant’s gross income, deducts tax and the Medicare Levy using the ATO scales, deducts any HELP repayment, and then subtracts a household expenditure measure. The resulting monthly net surplus is what must cover the loan repayment at the assessment rate — not the actual rate. APRA’s serviceability buffer remains at 3.0 percentage points as confirmed in May 2026, so the assessment rate is roughly the lender’s advertised variable rate plus 3%. Every dollar of extra after-tax income therefore has to service roughly 3% more notional interest than the real loan, which magnifies its effect on borrowing capacity. A $268 annual saving works out to about $22 a month. Run through a typical 30-year assessment at a 9% assessment rate, that $22 a month supports roughly $2,600 in additional principal. For a couple both earning in the band, the combined $536 annual saving can lift the assessed loan ceiling by $5,000–$6,000. Where one partner is a higher-rate earner, the lift is smaller as a proportion of total income, but it still moves the dial on a marginal pre-approval.
Beyond the tax cut itself, APRA’s debt-to-income framework — in force since February 2026 — means lenders must keep new lending at a DTI of 6 or above within 20% of each portfolio’s new loans. For a borrower whose DTI is already close to that boundary, even a small boost to assessed net income can pull the ratio back under 6 and move the application from the restricted bucket into the standard-flow bucket, which can mean the difference between a conditional approval and a decline. We cover the mechanics of that cap in Borrowing Power 2026: How APRA’s 3% Buffer and the DTI Cap Set Your Loan Ceiling.
What does the 15% bracket mean for first-home buyers specifically?
First-home buyers typically sit inside the 15% and 30% brackets, often with one partner in each. The tax saving is modest, but first-home purchases are deposit-constrained, and every dollar of borrowing capacity that can be added without increasing the deposit improves the loan-to-value ratio and can reduce or eliminate LMI. In NSW, for example, a first-home buyer purchasing an established home at $800,000 pays zero transfer duty under the First Home Buyers Assistance Scheme, but the full duty kicks in at $800,001 and phases out to $1,000,000. If the tax cut lifts the assessed loan size by $10,000, that can be the difference between staying inside the full-exemption threshold and tipping into a duty bill of several thousand dollars — money that must come from the deposit and therefore pushes up the LVR. The interplay between duty thresholds and borrowing capacity is particularly sharp in NSW, as detailed in NSW Stamp Duty 2026-27: What It Adds to Cash-to-Complete and Takes From Your Deposit.
In Victoria, the first-home duty exemption cuts off at $600,000 and phases out to $750,000, so a couple trying to buy at $620,000 with a 10% deposit needs every dollar of assessed income to keep the loan size high enough to cover the balance after the reduced duty concession. In Queensland, the picture is different again: from 1 May 2025, first-home buyers of a new home or vacant land pay no transfer duty with no price cap, which removes the cliff-edge effect but still leaves the borrowing-capacity question front and centre, because the lender still has to be satisfied the loan is serviceable.
Does the tax cut affect non-resident or working holiday maker borrowers?
No. The 15% bracket applies only to Australian residents for tax purposes. Non-residents face a flat 30% rate on the first $135,000 of Australian-source income, with no tax-free threshold and no access to the 15% band. Working holiday makers on 417 or 462 visas are taxed at 15% on the first $45,000, which was already below the old 16% resident rate, so the resident cut does not change their position. For a lender assessing a non-resident or WHM borrower, the tax scales used are the ones that apply to that visa or residency status, and the APRA buffer still applies, so the borrowing capacity outcome is typically lower than for a resident on the same gross income — sometimes significantly so once the foreign purchaser stamp-duty surcharges in most states are factored into the funds-to-complete calculation.
How should borrowers think about the 2027 rate cut to 14%?
The legislated move from 15% to 14% on 1 July 2027 will deliver a further $268 annual saving for anyone with taxable income at or above $45,000 — the same dollar amount as the 2026-27 cut, because the band width is unchanged. For a borrower who is planning to buy in the second half of 2027, that extra saving will feed into the same serviceability arithmetic and add another few thousand dollars to the assessed loan ceiling. The cumulative effect of the two cuts — 16% down to 14% — is $536 a year per taxpayer, or $1,072 for a couple both earning above the band. That is not transformational, but in a market where borrowing capacity is being squeezed by the 3% buffer and the DTI cap, it is a tailwind that moves in the borrower’s favour. The sensible approach for someone on the margin of a pre-approval now is to run the numbers with a licensed mortgage adviser who can model both the current 2026-27 scales and the 2027-28 scales, so the loan structure is sized for what the borrower can service today and what they will be able to service in 12 months’ time.
Where do the numbers come from — and what are the limits?
The tax rates and thresholds in this article are drawn from the Australian Taxation Office’s published resident individual scales for the 2026-27 income year, as confirmed in July 2026. The HELP/HECS repayment thresholds and marginal rates are from the same ATO source. The APRA serviceability buffer of 3% and the DTI framework are as publicly confirmed by APRA in May 2026 and February 2026 respectively. State stamp-duty scales and first-home concessions are sourced from each state and territory revenue office as at July 2026: Revenue NSW, State Revenue Office Victoria, Queensland Revenue Office, WA Department of Treasury, RevenueSA, State Revenue Office Tasmania, ACT Revenue Office, and the NT Territory Revenue Office. All figures are subject to change by legislation or regulatory determination, and lenders apply their own credit policies on top of the regulatory minimums, so an individual loan quote will reflect the lender’s specific assessment rate, expense benchmarks and credit scorecard — not just the tax scales.
FAQ
Does the 15% tax cut mean I can borrow more right now?
Yes, but the increase is modest. For a single earner on $70,000 the annual saving of $268 translates to roughly $2,500–$3,000 in extra assessed borrowing capacity under a typical 9% assessment rate. For a dual-income couple both in the band, the combined lift is around $5,000–$6,000. The exact number depends on the lender’s specific serviceability calculator and your other liabilities.
I have a HELP debt — does the tax cut still help my loan application?
Yes. The HELP repayment system is marginal, so you only repay a percentage of income above the $69,528 threshold. The 15% tax cut reduces the tax on income between $18,201 and $45,000, which is below the HELP repayment threshold, so the full saving flows through to your net pay and is captured in the lender’s assessment. Your HELP repayment itself is unchanged by the tax cut.
Will the 2027 cut to 14% make a bigger difference?
It will be the same dollar saving as the 2026-27 cut — another $268 for anyone earning $45,000 or above — because the band width does not change. The cumulative effect of both cuts is $536 per year per taxpayer, which for a couple can add $10,000–$12,000 to assessed borrowing capacity once both cuts are in place.
Does the tax cut affect how much deposit I need?
Not directly. The tax cut improves your assessed income and therefore your maximum loan size, but the deposit requirement is a function of the purchase price and the lender’s LVR cap. If the extra borrowing capacity lets you reach the purchase price without crossing an LMI threshold or a stamp-duty cliff, it can reduce the effective cash you need to bring to settlement, but the minimum deposit percentage does not change because of a tax cut.
Are the tax scales different if I am a non-resident or on a working holiday visa?
Yes. Non-residents are taxed at 30% on the first $135,000 with no tax-free threshold and no access to the 15% bracket. Working holiday makers pay 15% on the first $45,000, which was already lower than the old resident 16% rate. Neither group benefits from the 2026-27 cut, and lenders will use the tax scale that matches your residency or visa status when they calculate your borrowing capacity.
Where to Go From Here
Policy settings tell you the size of the cheque you need at settlement; they do not tell you whether the loan behind it actually works. If you want the duty, deposit, LMI and assessed repayment modelled together against your real income and commitments, a licensed Arrivau mortgage adviser can review your position and come back to you within one business day.
This article is general information only and does not constitute financial, tax or legal advice. Rates, thresholds and eligibility rules change. Confirm your own position with the ATO, the relevant state or territory Revenue Office, or a licensed adviser before acting.