The 81% Ceiling: Why Record Broker Market Share Changes How You Grow From Here

Australian mortgage brokers have just been handed their biggest headline in years: a record 81.0% of all new residential home loans in the March 2026 quarter were written through the broker channel, according to the latest MFAA Quarterly Market Share Report compiled by Cotality. It is the highest figure since the survey began more than a decade ago. But buried in the same release is a quieter, more important signal for how you build your business from here — because 81% is starting to look less like a launch pad and more like a ceiling.

The headline number — and the one beneath it

The data, released on 10 June, shows brokers were involved in 81% of new residential lending between January and March, up from 76.8% in the same quarter a year earlier and comfortably above the previous record of 76.7% set in the December 2025 quarter. Volume told the same story: the channel settled $124.88 billion in new home loans for the quarter, an increase of $25.51 billion year-on-year and the largest March-quarter tally the MFAA has ever reported.

Step back and the trajectory is remarkable. As MFAA chief executive Anja Pannek noted, broker market share has climbed from 55.3% in March 2018 to 81% in March 2026 — a 25.7 percentage-point gain in eight years. Australia now sits alongside the United Kingdom and the Netherlands as one of only three countries on earth where brokers facilitate more than 80% of mortgage lending.

That all of this happened, in Pannek’s words, “despite a backdrop of higher rates, weaker sentiment and intense competition between lenders” makes it more impressive, not less. With the cash rate at 4.35% and the RBA’s next call due on 16 June, borrowers walked toward advice, not away from it.

Why borrowers keep choosing brokers

The “why” is not a mystery, and it is worth saying plainly because it is the foundation everything else rests on. When lending gets harder, brokers get busier. Tighter serviceability, an APRA debt-to-income regime that now rations high-DTI files, divergent lender appetites and a rate outlook that even the major banks can’t agree on have turned a home loan into a genuinely complex decision. Most borrowers are not equipped to navigate twenty-plus lender policies on their own, and they know it.

“When more than eight in ten new home loans are being facilitated by brokers, it shows the trust consumers are placing in the channel and the value they see in having expert guidance through an increasingly complex lending market,” Pannek said. “This result is a strong reflection of the work brokers do every day to help Australians understand their options, access competition and choice, and make informed lending decisions.”

The Best Interests Duty is part of this equation, not a footnote to it. BID is the structural reason the broker proposition is differentiated from a branch — a lender’s staff member is under no obligation to act in the customer’s best interests, and a broker is. In a market where trust is the scarce resource, that obligation is a competitive moat. It is also, increasingly, the standard borrowers expect.

The line in the release brokers shouldn’t skip

Here is where the celebration needs a reality check. In the same announcement, Pannek was unusually direct about the state of broker businesses underneath the record: “While this is an important milestone for the industry, we also recognise that business operating conditions are challenging. Economic uncertainty, cost pressures, shifting consumer confidence and global instability are all affecting business resilience.”

Read those two messages together — record share, harder conditions — and you arrive at the real story. The channel is winning the war for the borrower while individual broking businesses are fighting a margin war on the ground. More files, more complexity, more compliance overhead and more competition from lender retention teams do not automatically translate into a healthier P&L. Market share is a channel-level trophy. Margin is what pays your team.

From penetration to productivity: the growth model just flipped

Now the strategic point. For most of the past decade, the broker industry’s growth engine has been penetration — taking share from the branch channel. That engine is running out of fuel. You cannot write 81% of the market and assume the next eight years will deliver another 25 points; there is only 19 points of market left, and the back half of any adoption curve is the slowest and most expensive to win. The borrowers still going direct to a branch in 2026 are, increasingly, the ones who will never use a broker — the rusted-on, the staff-rate customers, the ultra-simple top-ups.

This is not bad news. It is a signal to change where you look for growth. When share stops being the lever, three others take over:

1. Value per client (depth, not just breadth). If you cannot easily grow the number of clients, grow what each relationship is worth. Asset and equipment finance, commercial and SME lending, personal insurance referrals, SMSF lending, and a deliberate review cadence on the back book all lift revenue per household without a single new lead. The brokerages quietly outperforming in 2026 are diversified, not just busy.

2. Retention (defend the trail). When the channel owns 81% of new lending, the next battleground is the existing book — and lender retention teams know it. Every refinance you don’t initiate is one a bank’s pricing desk will. A structured repricing and review program, triggered before roll-offs and rate events rather than after, is now a core growth activity, not an afterthought. It also keeps you clear of the clawback and conduct risks that come with churn for its own sake.

3. Productivity (more settlements per hour, not more hours). If each file is more complex, the only sustainable answer is to get faster at the parts that don’t add value. Cleaner data collection up front, tighter lender-selection workflows, and disciplined use of serviceability and document tools convert complexity into throughput. Productivity is the lever that protects margin while volume and compliance both rise.

What to watch next

Two near-term forces will shape how this plays out. The first is the RBA’s 16 June decision, where the majors are openly split — NAB has shifted to tipping a cut while Westpac still expects a hike — which means more rate uncertainty, more borrower questions, and more reason for clients to lean on a broker rather than go it alone. The second is APRA’s 20% high-DTI cap, which continues to ration the high-value investor files that once padded broker volumes; growth from that cohort is now capacity-constrained, reinforcing the case for diversification.

The 81% milestone deserves a moment of pride — it is the product of years of professionalism and hard-won trust. But the smartest read of this release is not “we won.” It is “the easy growth is behind us, and the next phase rewards a different game.” Brokers who spend the back half of 2026 building depth, defending their book and lifting productivity will be the ones still growing when the market-share line finally flattens — as, mathematically, it must.

Sources: The Adviser — “Broker market share surges to new record high” (10 June 2026); MFAA Quarterly Market Share Report.

Disclaimer: This article is for general information and professional development purposes only. It does not constitute legal, compliance, or financial advice. Brokers should consult their aggregator’s compliance team and, where required, seek independent legal advice regarding their obligations under the National Consumer Credit Protection Act 2009 and ASIC’s responsible lending and best interests duty obligations.