Big 4 vs Non-Bank Home Loan Rates: What 10,226 Products Tell Us (April 2026)
In this article
"Are you with a Big 4 bank? You are probably paying too much." It is the line every mortgage broker says. Usually it is true. But the real answer is more nuanced than "the Big 4 rip you off, non-banks are cheaper". We ran the numbers on 10,226 variable-rate home loan products across 105 Australian lenders this morning — the whole market, not just the cheapest advertised deals — and the picture is more interesting than the stereotype.
This article is the short version of that analysis. Which lender type actually has the cheapest rates. Which of the Big 4 has the best offering (it is not who you think). Why non-banks are both the cheapest and the most expensive. And what the 0.40-0.80% delta means in actual dollars.
What We Did
We pulled every current variable-rate home loan product on our panel into one table — 10,226 products across banks, non-banks and credit unions. We stripped out specialist and private lending products (rates above 9%), leaving a clean comparison of 8,763 standard residential home loan products. Then we broke down minimum, average and maximum rates by lender type.
All data is live from the lender policy feed as of 16 April 2026. Rates change weekly; we will update this article when material movements happen.
Average Variable Rates by Lender Type
The headline number: credit unions win on average rate, banks are second, non-banks are third. This may surprise borrowers who have been told for years that non-banks are always cheaper.
That chart tells three stories:
- Credit unions quietly have the best average pricing. With only 5 credit unions on our panel (Credit Union SA, GMCU, BCU, a few smaller regionals) the sample is small, but the 6.45% average undercuts every other category.
- The Big 4 average is 6.95%, which is 0.34% above the bank category average. That is the "major bank premium" in numerical terms — about $170 per month on a $600K loan. The rest of the bank category (mid-tiers, mutuals, regionals) drags the bank average down.
- Non-banks have the highest average rate by a meaningful margin (7.36%). This contradicts what most borrowers expect — but it makes sense when you realise "non-bank" covers HSBC and Macquarie at one end and specialist near-prime lenders at the other.
We'll unpack the non-bank paradox in section 5. First, the Big 4 head-to-head.
Big 4 Head-to-Head
Broker-channel rates from the Big 4 are meaningfully lower than their advertised rates. Here is the comparison of the cheapest and average variable rate on each of the four majors' current product ranges.
| Big 4 Bank | Cheapest Variable | Avg Variable | Cheapest 3yr Fixed | Total Products |
|---|---|---|---|---|
| ANZ | 5.78% | 7.07% | 6.34% | 128 |
| Westpac | 5.92% | 6.89% | 6.09% | 181 |
| NAB | 5.97% | 6.85% | 6.04% | 128 |
| Commonwealth Bank | 5.99% | 7.00% | 6.29% | 132 |
| Source: Esteb and Co panel data, 16 April 2026. "Cheapest" = lowest qualifying rate for well-suited borrowers — most often a sub-80% LVR, package product, owner-occupier P&I. | ||||
Two interesting observations:
- ANZ has the cheapest variable rate (5.78%) but the second-highest average (7.07%). Meaning: ANZ's best price is aggressive, but their rack rate on most products is steep. You have to qualify for the specific package to get the sharp rate.
- NAB is the most consistently priced major — cheapest average variable (6.85%), cheapest 3-year fixed (6.04%), and a narrow gap between cheapest and average. NAB is statistically the best Big 4 bet for an "average" borrower who isn't optimised onto a specific package.
Commonwealth Bank has the largest product range (150+ home loan variations when you include offset, package and first home buyer variants) but the highest overall average rate. Their strength is specific segments — their medical and legal professional packages are genuinely competitive — but their bulk product pricing isn't.
The Cheapest 12 Home Loan Rates in Australia
Once you look past the Big 4, here are the twelve lenders with the cheapest variable rate currently on their books. Seven are mutuals or professional banks. One is a Big 4 (ANZ, narrowly making the top 12).
| # | Lender | Type | Cheapest Variable | Eligibility Notes |
|---|---|---|---|---|
| 1 | Queensland Country Bank | Bank (mutual) | 5.54% | Open membership |
| 2 | UniBank | Bank (professional) | 5.64% | Higher education workers & family |
| 3 | Teachers Mutual Bank | Bank (professional) | 5.64% | Education workers & family |
| 4 | Firefighters Mutual Bank | Bank (professional) | 5.64% | Firefighters & family |
| 5 | Health Professionals Bank | Bank (professional) | 5.64% | Health workers & family |
| 6 | Bank of China | Bank | 5.68% | Open |
| 7 | HSBC | Non-bank (international) | 5.69% | Premier customers typically |
| 8 | Bank of Sydney | Bank | 5.69% | Open |
| 9 | GMCU | Credit Union | 5.69% | Regional membership |
| 10 | Hume Bank | Bank | 5.74% | NSW/VIC border focus |
| 11 | Newcastle Permanent | Non-bank | 5.74% | Open |
| 12 | BCU | Credit Union | 5.74% | Open |
| Cheapest variable rate available for a well-suited owner-occupier borrower, April 2026. | ||||
The gap between #1 (Queensland Country Bank at 5.54%) and the cheapest Big 4 (ANZ at 5.78%) is 0.24%. On a $600,000 loan that is about $87 per month — $1,044 a year — $31,320 across a 30-year loan if the differential holds. The gap against the Big 4 average (6.95%) is much bigger: 1.41%, roughly $500/month, $180,000 across 30 years.
Note that five of the top six are professional/mutual banks with restricted membership. If you don't work in education, health or emergency services, Queensland Country Bank and Bank of China are the easiest to access in the sub-5.70% club.
The Non-Bank Paradox
Non-banks are both the cheapest and most expensive category, depending on which part of the distribution you look at. HSBC sits at 5.69%. At the other end of the non-bank spectrum, specialist lenders for borrowers with credit impairments price at 8.00-9.00%. The average gets dragged up because the non-bank universe includes every edge-case borrower the banks decline.
The practical implication: "going non-bank" is not a strategy on its own. The right question is "which specific non-bank product qualifies for my situation?". HSBC and Macquarie at the cheap end, or a specialist near-prime lender at the expensive end, are entirely different propositions. Without a broker in the middle doing the screening, most borrowers walking into a non-bank comparison site end up on a product that is expensive for their profile.
What This Actually Costs You
To put the rate gaps in dollar terms, here is what a $600,000 owner-occupier loan looks like over a typical 30-year term at each benchmark rate:
| Rate tier | Rate | Monthly P&I | Annual Interest Yr 1 | Total Interest 30yr |
|---|---|---|---|---|
| Cheapest on panel | 5.54% | $3,425 | $33,010 | $633,207 |
| Credit union average | 6.45% | $3,771 | $38,516 | $757,599 |
| Bank average | 6.61% | $3,834 | $39,481 | $780,188 |
| Big 4 average | 6.95% | $3,969 | $41,535 | $828,946 |
| Non-bank average | 7.36% | $4,137 | $44,017 | $889,319 |
| $600K loan, 30yr P&I. Assumes rate holds flat (it won't) but illustrates the scale of the gap. | ||||
The difference between the cheapest on panel and the Big 4 average is $544 per month, $195,739 over 30 years. Even if rates fluctuate, a 1%+ starting advantage compounds into a meaningful wealth transfer over the loan's life. Borrowers who have been with the same Big 4 bank for more than 3 years are almost always paying above the broker-channel rate available to new customers through the same bank.
Across all refinances we settled in Q1 2026, the average customer moved from 6.92% to 5.89% — a 1.03% reduction saving them roughly $3,800 per year on a $550K loan. Not life-changing. But over ten years it covers a decent family car.
When Each Lender Type Wins
There is no universally correct answer. Different borrowers win with different lender types:
Big 4 wins when…
You have a complex scenario that needs old-school relationship banking — a private banker, fast escalation into credit for an above-policy decision, multi-product relationship (home loan + business + margin lending) under one roof. Or when you're already a customer with a strong deposit relationship and can negotiate a rate match against a broker-presented alternative.
Non-banks win when…
Your scenario is narrow and specialised. The strongest non-bank products are built around a specific segment: HSBC for Premier customers, Macquarie for professionals, Pepper for near-prime borrowers, Liberty for self-employed with genuinely complex income. Generic "non-bank" shopping rarely works; specific non-bank expertise does.
Credit unions/mutuals win when…
You are an open-membership candidate (Queensland Country Bank, Heritage Bank, P&N) or you qualify for a professional mutual (Teachers, Firefighters, Health, Uni, QBANK). These lenders have the structural cost advantage of not paying dividends, so they can price below the Big 4 indefinitely. The trade-off is longer turnarounds.
Mid-tier banks (Bankwest, ING, Macquarie) win when…
You want broker-channel pricing efficiency, a strong digital experience, and a product range just wide enough. These lenders settle our deals at 3-10 business days while matching or beating Big 4 pricing in most situations. They are the quiet middle that most borrowers never consider.
See Where You Actually Sit
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Compare Rates NowFrequently Asked Questions
Are non-bank home loans cheaper than the Big 4?
Not on average. Non-bank average is 7.36%, Big 4 average is 6.95%. But the cheapest non-bank rate (5.69%, HSBC) beats the cheapest Big 4 rate (5.78%, ANZ). Non-banks have the widest rate range on the market.
Who has the cheapest home loan rate in Australia right now?
Queensland Country Bank at 5.54% variable as of April 2026. UniBank, Teachers Mutual Bank, Firefighters Mutual Bank and Health Professionals Bank are tied at 5.64%.
Which Big 4 bank has the lowest home loan rate?
ANZ at 5.78% variable. NAB has the cheapest 3-year fixed at 6.04% and the most consistent across-product pricing (6.85% average).
Why do credit unions have cheaper rates than banks?
Credit unions are member-owned mutuals that return profit to members as lower rates rather than paying shareholder dividends. Credit union average is 6.45% across our panel, versus 6.61% for banks and 6.95% for the Big 4 specifically.
Is it worth switching from the Big 4 to save on interest?
For most borrowers, yes. The typical gap between a Big 4 standard variable rate and the cheapest equivalent product on our panel is 0.40-0.80%. On a $600K loan that is $144-$288 per month — $1,728-$3,456 per year. Over 30 years a 0.5% reduction saves roughly $65,000 in interest.
Richard Esteb
With 11+ years of experience inside private lending, Ricky founded Esteb and Co to bring transparency and technology to mortgage broking. He has sat on both sides of the table - as a lender and as your advocate.