A refinance is worth doing when the rate, fee and structure
change actually pays back the switching cost inside a window
you'll hold the loan. Not when a four-thousand-dollar cashback
makes the front-page maths look right. The honest version is
below — and the calculator that does it on your numbers is
one click away.
Run the maths on your loan first
The refinance break-even calculator takes your current rate,
balance and remaining term, models the cheapest available panel
rate plus switching costs, and tells you how many months until
the switch has paid for itself. If the answer is under 18 months
and you'll hold the loan longer than that, refinance is the
right call. If not, the calculator says so plainly.
The most common refinance mistake in the Australian market right
now is taking a $4,000 cashback at a rate 0.30–0.50% above the
best the panel offers for the same risk profile. On a $600,000
loan, 0.40% is $200/month — $2,400/year — of extra interest. The
$4,000 cashback is gone inside 20 months, and
every month after that you're paying for someone else's
marketing.
The honest comparison isn't cashback-vs-no-cashback. It's
cashback dollars versus rate-differential dollars over
the actual hold period. Cashbacks pay only if you're
genuinely going to exit again inside the payback window — and
you usually can't, because broker clawback runs to month 24 and
no lender will write you another cashback inside 12 months at
the same brand.
01.
The four levers a refinance actually pulls
The advertised lever is the rate. The four that actually decide
whether the switch is worth doing are below. The break-even
calculator quantifies the first; the broker file work decides the
other three.
Rate vs cashback economics
Lever 1 · the one the calculator runs the numbers on.
Most $3–4k cashback offers sit on a rate 0.30–0.50% above the
cheapest panel rate. On a $600k loan that's $1,800–$3,000/year
of additional interest — so the cashback is reabsorbed inside
12–20 months. Hold the loan past the payback window and the
cashback offer is the more expensive deal. The break-even
calculator runs both columns against your actual balance and
spits out the crossover month.
Clawback risk
Lever 2 · doesn't cost you, constrains your next move.
Most Australian lenders claw back the broker's upfront
commission if the loan exits inside 24 months — 100% in
months 0–12, 50% in months 13–24. It doesn't cost you a cent
directly. What it does is mean that if you ask a broker to
refinance you again inside two years they will usually decline
— the file is loss-making for them. Decide each refinance on a
24-month-plus hold horizon, not a 12-month chase.
Retention-rate negotiation
Lever 3 · the cheapest possible "refinance".
Sometimes the right move is asking your existing lender for
the rate you'd switch for, before switching. Retention teams
discount more aggressively when you can quote a documented
competitor offer than when you call asking generically for a
better rate. Best case: the retention rate matches, the file
never leaves, switching cost is zero. We do this assessment
before lodging — the saved time is real for both sides.
Structure changes
Lever 4 · usually more important than the rate.
Splits between fixed and variable, offset balance utilisation,
redraw architecture, principal-and-interest versus
interest-only, repayment frequency — the structure of the
refinanced loan typically matters more to total cost than the
headline rate. Most existing loans are structurally
sub-optimal because they were set up at a different cash-rate
regime; the refinance is the moment to fix that. The split
loan optimiser models the structural side.
02.
When refinance is the right call — and when it isn't
Not every loan benefits from refinancing, and there are real
reasons to stay put even when the rate gap looks attractive on
paper. The honest version below.
Refinance probably pays back if:
Your current rate is 0.30%+ above the cheapest panel rate for your LVR band
You'll hold the new loan at least 18–24 months (lines up with both break-even and clawback)
You haven't refinanced in the last 24 months
Your equity is 20% or more (LMI doesn't get added a second time)
You can use the switch to consolidate higher-interest debt, fix offset structure, or release equity for a productive purpose
Your existing lender refused or undershot on retention
Your existing lender already matched a documented competitor rate
You're refinancing into a cashback at a higher rate that won't break-even before the next refinance window opens
Your current loan is under 12 months old (most lenders decline as churn risk)
The new lender's structure is meaningfully worse (no offset, redraw fees, restricted P&I conversion)
03.
Lender appetite for refinance, May 2026
Each lender competes for refinance volume differently. Some lead
with cashback, some with sharp ongoing rates, some with broker
turnaround. The right destination depends on the file shape; the
borrowing-capacity calculator scores your file across the panel
and surfaces the winner. The lender pages below cover each
individually.
Two practical refinance rules from the panel that show up
repeatedly:
For 80% LVR owner-occupier refinances, ING's
flat-rate ceiling routinely produces the sharpest pricing —
5.89% holds all the way to 80% LVR where every Big 4 steps up.
See the ING profile for the lever
detail.
For sub-60% LVR scenarios on $500k+ loans,
CBA's MAV cheap-tier rule applies — and we've used it to keep
$510k loans on a cheaper rate than $480k loans at the same
lender, because the rate tier shifts at $500k. See
the CBA profile for the exact
mechanic.
04.
How the refinance works, end to end
A clean refinance from initial assessment to settlement runs 3–6
weeks. The sequence below is the same one I work through on every
file — published here so you know what's coming before lodging.
Discovery and goal alignment — current rate,
balance, lender, offset structure, hold-period intent, equity
goals. 30 minutes.
Panel scoring — your file scored across the
panel for borrowing capacity, rate at your LVR band, structure
fit, and turnaround. The
borrowing-capacity calculator
runs the same logic.
Retention check — ask your existing lender to
match the panel-best documented offer. Sometimes this resolves
the file with zero switching cost. If it doesn't, you have a
documented benchmark for the new lodgement.
Best-interests assessment + lodgement — formal
written recommendation, full ROI, lodgement to the chosen lender
through Connective Flex.
Conditional → unconditional → settlement — I
handle valuation chase, condition satisfaction, lender liaison,
and conveyancer handover. Typical timeline 3–6 weeks from
lodgement.
Before booking a strategy session, run the break-even number
yourself. If the calculator says the switch pays back inside
18 months and you're holding longer than that, the conversation
is just confirming which lender. If the calculator says it
doesn't, we'll talk about retention or structure instead.
Usually no. Most cashback offers sit on a rate 0.30–0.50% above
the cheapest panel rate. On a $600k loan, 0.40% is $2,400/year
of additional interest — the $4k cashback is gone inside 20
months. The right comparison is cashback dollars vs
rate-differential dollars over the actual hold period.
What does it cost to refinance in Australia in 2026?
Typical switching cost is $600–$1,200 (discharge $300–$400,
application/legal $0–$600, valuation $0–$300, government title
fees $200–$300). Many lenders waive application and valuation
on broker-channel refinances. Net switching cost is rarely
decisive; rate-differential maths is.
What is broker commission clawback?
Most Australian lenders claw back the broker's upfront
commission if a loan exits within 24 months — 100% in months
0–12, 50% in months 13–24. It doesn't cost the borrower
directly, but it constrains how often you can practically
refinance.
Should I ask my current lender to match before refinancing?
Yes — after you have a real comparable offer. Retention teams
discount more aggressively against a documented competitor rate
than a generic ask. Sometimes the retention rate matches and
the refinance becomes unnecessary. The broker assessment
surfaces this option before lodging.
How often can I refinance?
No regulatory cap, but practical constraints apply. Most
lenders won't write a refinance under 12 months old. Broker
clawback runs to month 24. Cashback offers usually exclude
borrowers who took a cashback at the same brand in the last 12
months. Realistic cadence is once every 2–3 years.
What's the best lender to refinance to in 2026?
Depends on your file. ING for 80% LVR owner-occupier, CBA for
sub-60% LVR $500k+ loans, Macquarie or Bankwest for
self-employed, Bank of Melbourne for 95% LVR investor. The
borrowing-capacity calculator scores your file across the
panel; the refinance break-even calculator quantifies the
payback.
Refinance is the service line where the gap between the front-
page marketing and the actual economics is widest. Every
refinance recommendation I make is documented through a
best-interests-duty file note and supported by the same panel
data the calculators run on. The cashback honest version above
is what I tell clients before lodging — published here so the
bar gets set at the assessment stage, not the negotiation
stage. Refreshed alongside the Connective quarterly matrix release —
last refresh 14 May 2026.