Westpac
5.92%
+0.14%
Westpac vs ANZ, CBA & NAB: The Four-Brand Pickoff
Westpac doesn't lead the Big 4 on the cheapest advertised rate — that's ANZ. What Westpac does lead on is the calculator-level mechanics most borrowers never see: the lowest assessment rate of the Big 4, the widest product shelf in Australia, and four independently-priced sister brands sharing one credit team. The pricing edge on most Westpac-group deals isn't on the front page of the rate card — it's hidden across the brand shelves the bank rarely names in the same sentence.
Round 1 of 12
Cheapest advertised variable rate ANZ WINS
ANZ
5.78%
OO P&I <60% LVR
NAB
5.97%
+0.19%
CBA
5.99%
+0.21%
Westpac sits second of the Big 4 on cheapest advertised variable — 5.92% on the Rocket Premier Advantage. The catch is the qualification stack: loan size above $1m, LVR below 70%, broker-channel application with a Pricing Tool request. For a first home buyer at 90% LVR on a $600k loan the applicable Westpac rate climbs to roughly 6.44% — 0.52% above the headline. If you're a high-balance refinancer with equity, the sharp end is genuinely competitive; if not, the front-page number is aspirational rather than achievable.
Round 2 of 12
Average rate across full product range NAB WINS
Westpac
6.89%
237 products
ANZ
7.07%
139 products
NAB
6.85%
128 products
CBA
7.00%
150 products
Across all 237 Westpac products the average variable rate is 6.89% — second of the Big 4 behind NAB at 6.85%. That's the rate the modal Westpac customer is actually paying. Existing Westpac customers who haven't reviewed their loan in 2+ years sit in the 6.50–7.20% range, regularly 0.80–1.00% above what new customers are quoted the same week. Westpac's retention team rarely engages until a customer is credibly about to leave.
Round 3 of 12
Assessment rate (lower = more you borrow) WESTPAC WINS
Westpac
8.74%
Lowest Big 4
ANZ
8.76%
+0.02%
NAB
8.99%
Tied highest
CBA
8.99%
Tied highest
Westpac stress-tests serviceability at 8.74% — the lowest assessment rate of the Big 4. ANZ sits a fraction above; NAB and CBA assess at 8.99%. On a $150K income with no dependents the gap translates to roughly $20,000–$30,000 of additional borrowing capacity at Westpac vs NAB/CBA on the same applicant profile. For buyers tight on servicing — the realistic question for most FHBs and stacking investors — Westpac is the Big 4 door that opens widest. The borrowing capacity calculator applies each lender's actual buffer to your specific income, so the gap shows up in dollars not percentages.
Round 4 of 12
Product shelf breadth WESTPAC WINS
Westpac
237
Widest in AU
ANZ
139
NAB
128
Narrowest Big 4
CBA
150
237 active home loan products — roughly 60% wider than CBA, 70% wider than ANZ, and 85% wider than NAB. Part is legitimate range (owner-occupier vs investor, P&I vs IO, LVR tiers, fixed terms). Part is the Westpac-group multi-brand structure that Round 10 unpacks below. Practical implication for borrowers: a knowledgeable broker can often find a Westpac variant 0.10–0.20% sharper than the first product quoted, because the first product quoted is rarely the keenest one in the range. If a Westpac rate has been quoted directly to you, assume it's a default — not the optimal product on your profile.
Round 5 of 12
Broker-channel turnaround NAB WINS
Westpac
8 days
2nd Big 4
ANZ
10 days
Slowest
NAB
7 days
Fastest Big 4
CBA
9 days
Westpac averages 8 business days submission to unconditional on the broker channel — second of the Big 4 behind NAB. Conditional approval typically lands in 2–3 business days on a clean file. Westpac's weak point is valuations in outer-suburban and regional markets: their panel is CoreLogic-heavy and can come in 5–8% below contract, which detonates an LVR at the 80% threshold. Pre-valuing through the broker channel before formal application is a no-cost insurance policy we use routinely on outer-metro and regional contracts.
Round 6 of 12
Investment lending LVR cap TIE: ANZ / CBA WIN
Westpac
90%
Inv. LVR cap
ANZ
95%
Max
NAB
90%
CBA
95%
Max
Westpac caps investment lending at 90% LVR — same as NAB, behind ANZ and CBA at 95%. For investors with thin equity stacking a portfolio, Westpac and NAB are the two Big 4 doors that close at 90%. Westpac's offset is the assessment-rate advantage from Round 3: more borrowing capacity inside the 90% cap. For thin-equity investors specifically, ANZ or CBA — not Westpac.
Round 7 of 12
DTI cap ALL TIED AT 7.0×
All four Big 4 apply a 7.0× gross income DTI cap. What differs is income interpretation. Westpac is the strictest of the Big 4 on bonus averaging — they take the 2-year lower figure rather than the 12-month average that NAB will sometimes accept. On the upside, Westpac is the Big 4 most likely to accept trust distributions as assessable income where the trust is established and paying consistent beneficiary distributions. Useful for borrowers with family-trust-structured small businesses.
Round 8 of 12
Construction loan flexibility NAB WINS
Westpac
5 draws
95% LVR
ANZ
5 draws
95% LVR
NAB
6 draws
95% LVR
CBA
5 draws
95% LVR
Westpac caps construction at 5 progress draws — same as ANZ and CBA, one behind NAB's 6. Adequate for most standard builds but slightly less flexible than NAB for staged drawdowns on larger or more complex projects. Westpac's construction valuer panel is strong on inner-metro builds and weaker on acreage and non-standard sites. For complex builds (custom design, tight site, non-standard materials), NAB is the conservative-banker pick; for vanilla land-and-construction packages on metro slabs, Westpac is fine.
Round 9 of 12
Annual package fee & offset structure ANZ WINS ON OFFSET COUNT
Westpac
$395
Premier · multi-offset
ANZ
$395
Breakfree · 10 offsets
NAB
$395
Choice · 5 offsets
CBA
$395
Wealth · unlimited at $150k+
All four majors charge $395/year. Westpac's Premier Advantage waives discharge and switch fees, caps annual ongoing fees, and supports offset accounts against both owner-occupier and investment loans at no per-account charge. Where it actually earns its keep is for investors running multiple properties and offsets — on a 3–4 property portfolio the structure saves $1,200–$2,400/year against running the same loans without the package. ANZ technically wins on raw offset count (10); Westpac's package is materially better than NAB's on multi-property structures.
Round 10 of 12
Sister-brand pricing optionality WESTPAC WINS
Westpac is the only Big 4 with a multi-brand structure: Westpac, Bank of Melbourne, St.George and Bank SA — four customer-facing brands sitting on a single credit team and policy manual but publishing independent rate cards each month. ANZ, CBA and NAB each run one brand. On the broker channel the same deal can be priced against all four Westpac-group shelves before submission; differences of 0.05–0.20% on identical applicant profiles are routine. The signature insight below is what to do with that.
Broker insight · Round 10½
The four-brand pickoff Westpac doesn't market
Four brands. One credit team. Four independent rate shelves that rarely align in the same month — and the same scenario priced across all of them will routinely come back 0.05–0.20% apart. Most direct-to-bank customers see one number; the broker channel sees four.
$850K refinance · OO P&I · 80% LVR · variable
Westpac retention quote: 6.42%
Bank of Melbourne re-price: 6.32%
St.George re-price: 6.36%
Delta brand-low vs Westpac standard: 0.10% = $850/yr → ~$25,500 over 30 years
Westpac retention quote: 6.42%
Bank of Melbourne re-price: 6.32%
St.George re-price: 6.36%
Delta brand-low vs Westpac standard: 0.10% = $850/yr → ~$25,500 over 30 years
The credit assessment is identical across all four — same underwriter, same policy, same DTI math. The only thing that changes is which brand shelf the file lands on. Borrowers can't price across the shelves directly; the Pricing Tool that compares them sits inside the broker channel. This is the most under-shopped policy line in Big 4 lending — and the one that genuinely separates a Westpac-group deal from an ANZ, CBA or NAB submission.
For borrowers in NSW, VIC or SA the regionally-aligned sister brand sometimes prices keener than the flagship; for borrowers in QLD or WA the four shelves are just four price points on the same credit decision. Either way, "the Westpac rate" without naming which brand was priced is an incomplete quote.
Round 11 of 12
App & digital banking experience CBA WINS
Subjective but consistent client feedback: CBA's app is the best of the Big 4. Westpac sits third — workable but visibly older than CBA's or NAB's. The Westpac app handles offset visualisation adequately but is slower to refresh balances after redraw or repayment, and the in-app rate-renegotiation flow doesn't exist (calls or branch only). If you live in the app and rotate between sub-accounts daily, CBA still wins; for borrowers who use the app primarily for repayments and statements, Westpac is fine.
Round 12 of 12
AU housing lending market share (Dec Q 2025) CBA DOMINANT
Westpac
~18%
2nd largest
ANZ
~14%
Smallest
NAB
~16%
3rd Big 4
CBA
~25%
Largest
ABS Lending Indicators. Westpac is the second-largest home lender in Australia by book size, behind CBA and comfortably ahead of NAB and ANZ. The Westpac group also has the longest history of property-investor lending — historically the largest investor book among the Big 4, though the gap has narrowed since APRA's investor-lending caps in 2017. Market share means nothing for safety (identical APRA prudential status across the Big 4) — but it does mean Westpac's mortgage operations have meaningful internal weight, particularly on investor and portfolio lending.
Final scorecard: 12-round head-to-head
Westpac
3
wins / 12
Rounds 3, 4, 10
ANZ
2
wins / 12
Rounds 1, 9 + tied 6
NAB
3
wins / 12
Rounds 2, 5, 8
CBA
2
wins / 12
Rounds 11, 12 + tied 6
Two rounds tied (6 split between ANZ/CBA; 7 all-tied). Westpac ties NAB for top win count — but Westpac's 3 wins cluster around capacity-to-borrow (assessment rate, product shelf, multi-brand pricing) rather than headline rate or settlement speed. The right way to read this: if your binding constraint is borrowing capacity or refinance pricing, Westpac is the major to start with. If it's headline rate or turnaround, ANZ or NAB.
Bottom line
When Westpac is actually the right Big 4 to pick
- Servicing-constrained borrowers — Westpac's 8.74% assessment rate is the lowest Big 4, worth ~$20–30K of additional borrowing capacity vs NAB or CBA on $150K income
- Refinancers willing to price across four brand shelves — the 0.10–0.20% sister-brand delta is worth $850–$1,700/yr on an $850K loan
- Multi-property investors with offset structures — Premier Advantage's offset-against-investor-loans-at-no-extra-charge is worth $1,200–$2,400/yr on 3–4 property portfolios
- Trust-structured small business borrowers — Westpac is the most pragmatic Big 4 on trust distribution income
- Investor lending for established portfolio buyers — Westpac's investor book depth and bridging-loan policy carry the deal where ANZ and NAB go pickier
- Borrowers who want the widest shelf — 237 products means there's usually a sharper variant than the first product offered, if a broker is looking
See whether the Westpac shelf or one of its sister brands prices your deal sharpest
Westpac, Bank of Melbourne, St.George and Bank SA price independently — same credit team, four rate shelves. The borrowing capacity calculator applies Westpac's 8.74% assessment rate to your profile so you can see the capacity headroom before pricing.
Run the borrowing-capacity calculator →Quick FAQs
Which Big 4 has the lowest assessment rate?
Westpac at 8.74%. ANZ at 8.76%, NAB and CBA both at 8.99%. On a $150K income with no dependents that's ~$20–30K of additional borrowing capacity at Westpac vs NAB or CBA.
How many home loan products does Westpac have?
237 active home loan products — the widest shelf of any Australian lender. Roughly 60% more than CBA (150), 70% more than ANZ (139) and 85% more than NAB (128). Part of the count reflects the group's four customer-facing brands (Westpac, Bank of Melbourne, St.George, Bank SA).
Can a broker reprice the same Westpac deal across the sister brands?
Yes. Same credit team, same policy manual, four independent rate cards. On the broker channel a single applicant profile can be priced across all four shelves before lodgement; differences of 0.05–0.20% on identical scenarios are routine.
Does Westpac do 95% LVR investment loans?
No. Westpac caps investment lending at 90% LVR, the same as NAB. For 95% LVR investment lending in the Big 4, use ANZ or CBA.
Is Westpac good for first home buyers?
Yes — particularly through the First Home Guarantee. The 8.74% assessment rate is the lowest of the Big 4, which gives FHBs the most borrowing capacity. 8-day turnaround is middle-of-the-pack. The four-brand structure rarely matters for FHBs because the cheapest tier requires loan size above $1m.
What is Westpac's DTI cap?
7.0× gross income — identical to ANZ, NAB and CBA. Westpac is stricter than peers on bonus averaging (2-year lower rather than 12-month average) and more pragmatic on trust distribution income.
Can I get a home loan through Bank of Melbourne or St.George instead?
Yes. Both are wholly-owned Westpac subsidiaries on the same credit team but with independent rate cards. Sometimes one of the sister-brand shelves prices sharper than Westpac for identical scenarios — worth asking a broker to price the same deal across all four brands.