Technical Guide

The mortgage broker best interests duty: what it actually requires

A technical guide to the statutory best interests duty for mortgage brokers — where it comes from, what ASIC’s RG 273 expects a broker to do, the conflict priority rule, the ban on conflicted remuneration, and the complaints path if you think the duty was not met.

Published Sources verified 9 min read

Applies to: Enacted Commonwealth law in force at 12 July 2026 — NCCP Act 2009 Part 3-5A (authorised Compilation No. 50, 10 June 2025) and NCCP Regulations 2010 Part 3-9 (authorised Compilation No. 56, 1 November 2025); ASIC RG 273 published 24 June 2020. Not tied to a financial year. · Australia

The direct answer

Since 1 January 2021, Part 3-5A of the National Consumer Credit Protection Act 2009 has required mortgage brokers to act in the best interests of the consumer when providing credit assistance (s 158LA and s 158LE), and to give priority to the consumer’s interests wherever a conflict exists (s 158LB and s 158LF) — alongside a ban on conflicted remuneration. ASIC’s Regulatory Guide 273 explains what it looks for: gathering information about the individual consumer, assessing a range of products with overall cost as a prioritised factor, presenting options with a recommendation and reasons, and keeping records that show how the broker complied.

Key points

  • The duty is enacted law, in force since 1 January 2021: s 158LA of the NCCP Act requires a licensee to act in the best interests of the consumer in relation to the credit assistance, with s 158LE applying the same duty to credit representatives (civil penalty: 5,000 penalty units).
  • Where a broker knows, or reasonably ought to know, of a conflict between the consumer’s interests and its own, an associate’s or a representative’s, the conflict priority rule in s 158LB / s 158LF requires the consumer’s interests to be given priority.
  • There is no safe harbour: ASIC’s RG 273 states the obligations cannot be avoided by any notice or disclaimer, and a broker cannot comply merely by getting the consumer to consent to a conflict.
  • RG 273 translates the duty into practice — gather information about the individual consumer, make an individual assessment across a reasonably representative lender panel with overall cost prioritised, generally present more than one option with a documented recommendation, and keep records. ASIC warns that non-compliance risk is “substantially increased” where processes produce a “one-size-fits-all” outcome.
  • Lenders selling their own loans directly do not owe this statutory duty — it attaches to “mortgage brokers” as defined in s 15B. Responsible lending obligations apply to both channels; for brokers, the best interests duty sits on top of them.
  • The duty coexists with commission. Conflicted remuneration is banned, but commissions that meet the conditions in the NCCP Regulations remain lawful — not volume- or campaign-based, and, where the drawdown cap applies, referenced to funds actually drawn down net of offset in the first year, with clawback limited to 2 years and never charged to the consumer.
  • Disclosure is compulsory: a Credit Guide under s 113 and a credit proposal disclosure document under s 121, which must include a reasonable estimate of the commission likely to be received for the specific loan.

What the duty is, and where it comes from

The best interests duty is not industry custom or a marketing promise — it is a statutory obligation in Part 3-5A of the National Consumer Credit Protection Act 2009. Parliament inserted it through the Financial Sector Reform (Hayne Royal Commission Response—Protecting Consumers (2019 Measures)) Act 2020, implementing Recommendation 1.2 of the Financial Services Royal Commission, along with the accompanying reforms to broker remuneration. Mortgage brokers have had to comply since 1 January 2021; ASIC had deferred the original 1 July 2020 start date by six months because of COVID-19.

The guide to Part 3-5A (s 158K) sets out the scheme in four sentences: mortgage brokers must act in the best interests of consumers when providing credit assistance; where there is a conflict of interest, they must give priority to consumers; brokers and mortgage intermediaries must not accept conflicted remuneration; and employers, credit providers and mortgage intermediaries must not give it.

The core provisions — NCCP Act 2009, as at authorised Compilation No. 50 (10 June 2025)
ProvisionWhat it does
s 158LA (licensees) and s 158LE (credit representatives)The licensee must act in the best interests of the consumer in relation to the credit assistance. Stated civil penalty: 5,000 penalty units. Under s 158LE(2) the licensee must also take reasonable steps to ensure its credit representatives comply.
s 158LB and s 158LFThe conflict priority rule. Where the broker knows, or reasonably ought to know, of a conflict between the consumer’s interests and those of the licensee, an associate, a representative or a representative’s associate, it must give priority to the consumer’s interests. Stated civil penalty: 5,000 penalty units.
s 158N and ss 158NB–158NFDefine conflicted remuneration and ban it — brokers, mortgage intermediaries and their credit representatives must not accept it; employers, credit providers and mortgage intermediaries must not give it, in the circumstances prescribed by the regulations.
s 158TAnti-avoidance. Prohibits entering into or carrying out a scheme for the sole or a not-incidental purpose of avoiding any provision of Part 3-5A.
s 15BDefines “mortgage broker” — the definition that determines who the duty attaches to in the first place.

The duty is not limitless in scope. RG 273.5 confirms it applies only to credit products regulated under the National Credit Act — credit provided to consumers for personal, domestic or household purposes, or to purchase or improve residential investment property. Commercial lending sits outside it.

Where the words come from

The statutory text quoted throughout this resource is taken from the authorised compilation of the NCCP Act registered on the Federal Register of Legislation — Compilation No. 50, compilation date 10 June 2025, which was the latest registered compilation when this resource was verified on 12 July 2026. The conflicted remuneration conditions come from the NCCP Regulations 2010, authorised Compilation No. 56 (1 November 2025). ASIC’s administrative guidance is RG 273, published 24 June 2020.

What the duty requires a broker to do

The Act states the obligation but does not prescribe a method. ASIC’s RG 273 fills that gap by explaining what it looks for when assessing compliance, and Table 1 of the guide sets out the steps a broker may need to take. It is a process standard, not a results standard — but the process is demanding, and it must be evidenced.

The RG 273 compliance steps

  1. Gather information about the consumer. Investigate the consumer’s circumstances, objectives and financial situation — what they are attempting to achieve, and which product features they actually value. This is the input that makes an individual assessment possible; without it, everything downstream is generic.
  2. Make an individual assessment. Consider a range of relevant products and assess what is in that particular consumer’s best interests. RG 273.17 warns that the risk of non-compliance is “substantially increased” where a broker’s processes lead to a “one-size-fits-all” outcome.
  3. Present information and recommendations. RG 273.89: as a matter of good practice, present more than one option unless there is a good reason not to. RG 273.92 suggests a shortlist with one recommended option, and RG 273.93 says the consumer should understand why those options were selected, why others were not presented, and why the recommended option was recommended.

On cost, RG 273.51 is explicit: ASIC “generally expect[s] the cost of a credit product—such as interest rate, fees and charges and the size of repayments—to be a factor that mortgage brokers should prioritise”. RG 273.54 goes further, warning that a failure to consider cost and investigate “the lowest cost options available” may suggest non-compliance, and that any recommendation of a higher cost loan “will need to be supported by evidence demonstrating why that recommendation is in the consumer’s best interests”. RG 273.56 supplies the necessary caveat: the product with the lowest interest rate is not necessarily the lowest cost overall — which is precisely the reasoning behind the comparison rate and its limits, covered in our comparison rate resource.

Two structural expectations follow. First, RG 273.113: ASIC expects a broker to be accredited with a reasonably representative panel of credit providers, and to consider whether the composition of that panel is sufficient to meet consumers’ best interests. Second, RG 273.95: if all the options presented come from the same credit provider, the broker should say so and explain why.

The records are the compliance

RG 273.162–165 sets out what ASIC expects a broker to be able to produce: the responsible lending assessment (or the material used to prepare it), the Credit Guide given to the consumer, the information provided to the credit provider, application outcomes, relevant conversations, information showing the broker acted in the consumer’s best interests, “the options and ultimate recommendation you gave and the reasons why (including a detailed description of your decision-making process)”, and any potential conflict identified together with the actions taken to prioritise the consumer’s interests. A duty that cannot be evidenced is difficult to demonstrate as having been met.

The conflict priority rule — and why disclosure does not cure it

Sections 158LB and 158LF go beyond requiring conflicts to be managed. Where the broker knows, or reasonably ought to know, that there is a conflict between the consumer’s interests and the interests of the licensee, an associate of the licensee, a representative or an associate of a representative, the broker must give priority to the consumer’s interests when providing the credit assistance. Priority — not balance, and not disclosure.

This is where the duty departs sharply from the older disclosure-based model. RG 273.28 notes that the National Credit Act does not set out circumstances in which a broker is taken to have complied — there is no safe harbour to shelter in. RG 273.14 closes the other exit: “The best interests obligations cannot be avoided by any notice or disclaimer provided to or signed by the consumer. A mortgage broker cannot comply with these obligations merely by getting the consumer to consent to certain credit assistance or a conflict of interest.”

Nor can the scheme be engineered around. Section 158T prohibits entering into or carrying out a scheme for the sole purpose — or a purpose that is not incidental — of avoiding the application of any provision of Part 3-5A, and RG 273.181 notes that a person may be liable for a civil penalty for breaching it.

The conflicted remuneration ban — and how commission can still lawfully be paid

Section 158N defines conflicted remuneration as any benefit, monetary or non-monetary, given to a licensee or representative who provides credit assistance that, because of the nature of the benefit or the circumstances in which it is given, could reasonably be expected to influence the credit assistance provided to consumers. Sections 158NB and 158NC prohibit brokers, mortgage intermediaries and their credit representatives from accepting it; ss 158ND–158NF prohibit employers, credit providers and mortgage intermediaries from giving it. Each ban carries a stated civil penalty of 5,000 penalty units.

That ban does not outlaw commission. It outlaws the shapes of remuneration that could distort a recommendation. Part 3-9 of the NCCP Regulations 2010 sets out the conditions on which a monetary benefit — a lender-paid commission — is not conflicted remuneration.

Conditions for a commission to sit outside the ban — NCCP Regulations 2010, Part 3-9 (Compilation No. 56, 1 November 2025)
ConditionWhat it means in practice
Not a volume-based benefit (reg 28VE)Remuneration cannot be stepped up because the broker has written more business with a particular credit provider.
Not a campaign-based benefit (reg 28VF)No short-term promotional bonuses designed to steer business to a lender during a campaign window.
Referenced to funds drawn down, net of offset (regs 28VB–28VD)Where the drawdown cap applies, a percentage-based benefit must be calculated on no more than the “maximum drawdown net of offset” for the credit contract in the first year — that is, on funds the consumer actually drew down, less amounts sitting in offset accounts, rather than on an approved facility limit.
Clawback requirements satisfied (reg 28VG)Where the arrangement obliges the broker to repay the benefit on default or early discharge: the repayment obligation must not apply for more than 2 years after first drawdown, must not require repayment of more than the benefit given, and the consumer must not be subject to an obligation to pay an amount as a result of the clawback. Clawback costs cannot be passed on to you.
Non-monetary benefits (reg 28VH)Narrow carve-outs only — an infrequent benefit valued at less than $300 per final recipient; benefits with a genuine education or training purpose meeting prescribed conditions (professional development content must be at least 75% of course time or 6 hours a day, whichever is the lesser, with travel and accommodation paid by the participant or employer); and information technology software or support related to providing credit services.
Benefits paid by the consumerA benefit the consumer pays themselves is not conflicted remuneration.

The practical consequence is that a broker’s remuneration is structurally tied to the loan the consumer actually uses, not to the volume of business sent to any particular lender. In most residential lending scenarios, the lender pays broker commission. We explain remuneration in our Credit Guide.

On commission figures

This resource deliberately quotes no commission percentages. The figures that matter are the ones for your loan, and the law requires them to be given to you in writing — a range and calculation method in the Credit Guide, and a reasonable estimate for the specific credit contract in the credit proposal disclosure document. Commission structures also vary between lenders and change over time.

Who owes you the duty — and who does not

The duty attaches to the role, not to the transaction. Under s 15B, a licensee is a mortgage broker if it carries on a business of providing credit assistance for credit contracts secured by mortgages over residential property; it does not perform the obligations, or exercise the rights, of a credit provider for the majority of those contracts; and, in carrying on that business, it provides credit assistance for credit contracts offered by more than one credit provider. The Part 3-5A obligations apply only where the licensee or credit representative is a mortgage broker (ss 158L and 158LD).

Read that definition carefully and the consequence follows: a lender’s own staff selling that lender’s own loans directly are not mortgage brokers, and the statutory best interests duty does not apply to them. That is a genuine structural difference between the two channels — not a claim that either channel produces a better result for any particular borrower. Our guide on mortgage brokers and banks sets out the practical differences.

What both channels share is responsible lending. RG 273.22–273.24 make the relationship clear: the best interests obligations operate alongside the responsible lending obligations and do not alter them. They are distinct, complementary duties — the best interests duty introduces requirements and steps that are additional to responsible lending, and a broker must comply with both. Meeting the “not unsuitable” responsible lending standard is therefore not, by itself, evidence that the best interests duty has been met.

Where a broker operates as a credit representative under another entity’s Australian Credit Licence, s 158LE applies the duty directly to the representative and s 158LE(2) requires the licensee to take reasonable steps to ensure the representative complies. Our own arrangement is described in our Credit Guide and explained in credit representative arrangements explained.

What you should receive, and what to ask

Two disclosure documents are compulsory. Under s 113, a credit assistance provider must give you its Credit Guide as soon as practicable after it becomes apparent it is likely to provide credit assistance. It must be in writing and must include the licensee’s name, contact details and Australian credit licence number; information about fees payable by you; the names of the (up to six) credit providers with whom the licensee conducts the most business; information about any indirect remuneration such as commissions the licensee or its representatives are likely to receive from credit providers — including a reasonable estimate of the amounts or ranges and the method used to work them out; and the licensee’s dispute resolution procedure, with contact details for internal dispute resolution and the AFCA scheme.

Under s 121, at the same time as providing credit assistance — for example, when suggesting you apply for a particular credit contract with a particular credit provider — the licensee must give you a credit proposal disclosure document. It must contain the total of any fees or charges payable by you to the licensee, a reasonable estimate of the total indirect remuneration the licensee or its people are likely to receive in relation to that credit contract and the method used to work it out, and reasonable estimates of fees payable to the credit provider and to other parties. Both provisions carry a stated civil penalty of 5,000 penalty units.

A consumer’s checklist when using a broker

  • Check the authorisation before anything else. Moneysmart directs consumers to ASIC’s Professional Registers search, under “Credit Representative” or “Credit Licensee”, and states that if the broker is not on one of those lists, they are operating illegally. The same verification instinct applies on the tax side — see verifying a tax agent’s registration.
  • Ask why this loan. Moneysmart’s suggested questions include “Why did you recommend this loan to me? Why is this loan in my best interests?” The broker should be able to answer from the assessment they documented, not from memory.
  • Ask how the broker is paid — and whether it differs by lender. Moneysmart suggests exactly that question. Lenders generally pay brokers a commission, calculated as a percentage of the loan amount and typically with an upfront and an ongoing component; brokers must give you information about the commissions they may receive.
  • Ask to see more than one option. RG 273.89 treats presenting more than one option as good practice unless there is a good reason not to; Moneysmart puts it directly to consumers — ask the broker to explain how each option works, what it costs, and why it is in your best interests.
  • Ask why the options come from where they come from. If every option presented is from one credit provider, RG 273.95 says the broker should explain that and give reasons.
  • If the broker charges you a fee directly, get it in writing first. Moneysmart states that a proposed fee must be set out in a written quote, and that you must sign the quote before the broker can provide services and request payment.
  • Keep the documents. Your Credit Guide and credit proposal disclosure document are the record of what you were told about fees, commissions and where to complain.

If you think the duty was not met

The complaints sequence

  1. Raise it with the broker. Moneysmart’s first step: talk to the broker directly and explain the problem. Many issues are the product of an incomplete explanation rather than a breach.
  2. Complain in writing to the licensee. If it is not fixed, make a written complaint to the broker’s business through its internal dispute resolution process. The contact details for that process must be in the Credit Guide you were given. Our own process is set out on our complaints page.
  3. Escalate to AFCA. If the complaint is still unresolved, contact the Australian Financial Complaints Authority — the external dispute resolution scheme. AFCA can generally accept complaints about credit, finance and loans where the firm is an AFCA member, and states that its service is provided at no cost to complainants. Complaints can be lodged online, by email or post, or by phone on 1800 931 678.

AFCA’s own guidance is that the usual first step is to raise the problem with the financial firm directly, which is why the sequence above matters. This resource does not state time limits for internal dispute resolution responses or for lodging with AFCA — those were not verified at the review date, so check the current requirements with the licensee and with AFCA rather than relying on a remembered figure.

Hypothetical example — what the duty looks like across one loan application

Hypothetical example only — the people and businesses below are invented for illustration, no outcome is implied, and no rates or dollar figures are quoted because they depend on individual circumstances and on each lender’s own criteria, which vary and change over time. Suppose Mia and Sam approach a broker at the fictional “Kestrel Lane Finance” for help buying their first home. Under the best interests duty, the broker records their objectives and financial situation — what they can comfortably repay, whether an offset account matters to them, and how long they expect to hold the property. The broker then assesses products individually across the lender panel, prioritising overall cost (interest rate, fees and charges, and the size of repayments) alongside the features Mia and Sam said they value, rather than defaulting to a familiar lender. They receive a written shortlist, generally drawn from more than one credit provider, with one option recommended and reasons given — including why a product with a lower advertised rate was not recommended, if its fees or restrictions made it more expensive overall for their circumstances. They are given a Credit Guide and a credit proposal disclosure document setting out any fees payable to the broker and a reasonable estimate of the commission the lender is likely to pay for this loan. The broker keeps records of the assessment and the reasons for the recommendation. If Mia and Sam later formed the view that the recommendation served the broker’s interests rather than theirs, they could complain to the broker’s licensee first, and then to AFCA on 1800 931 678.

This example is entirely hypothetical and illustrates the mechanics only. It is not a client outcome, a prediction, or advice.

Limitations of this information

  • This is general information about a legal duty owed by mortgage brokers under Australian credit law. It is not credit assistance, personal advice or a recommendation of any credit product, and it does not take your objectives, financial situation or needs into account.
  • The duty governs how a broker must go about providing credit assistance. It is not a promise of any particular loan, interest rate, feature or approval — loan availability, pricing and approval criteria vary between lenders and change over time.
  • Legislative references reflect the authorised compilations in force at 12 July 2026 (NCCP Act Compilation No. 50, 10 June 2025; NCCP Regulations 2010 Compilation No. 56, 1 November 2025). Amendments commencing after that compilation date were not incorporated at the verification date. Confirm the current version on legislation.gov.au if you are reading this later.
  • ASIC’s guidance is cited as RG 273 published 24 June 2020 — the version presented on the ASIC website at the verification date. Check asic.gov.au for any later version before relying on the detail.
  • Penalties are stated only in penalty units, as the provisions state them. No dollar conversion is given because the current penalty-unit value was not verified at the review date, and maximum civil penalty calculations are not covered here.
  • No commission percentages are published. Actual and estimated remuneration for a particular loan must be disclosed to you in the Credit Guide and the credit proposal disclosure document.
  • Time limits for internal dispute resolution responses and for lodging a complaint with AFCA are not stated here — they were not verified at the review date.

Practical next steps

  1. Before engaging any broker, check their authorisation on ASIC’s Professional Registers under “Credit Representative” or “Credit Licensee”.
  2. Ask for the Credit Guide at the outset, and read the sections on fees, remuneration and dispute resolution before you go any further.
  3. When a recommendation is made, ask for the reasons in writing — including why the other shortlisted options were not recommended.
  4. Keep the credit proposal disclosure document with your loan records; it is the written estimate of what the broker will be paid for that specific loan.
  5. If you would like to see how our credit assistance service works in practice, see our mortgage broking service and our Credit Guide, or contact the practice. If you have a concern about work we have done, our complaints process sets out the steps.

Frequently asked questions

It is a statutory duty in Part 3-5A of the National Consumer Credit Protection Act 2009. Section 158LA requires a licensee to act in the best interests of the consumer in relation to the credit assistance, and s 158LE applies the same duty to credit representatives (with the licensee required to take reasonable steps to ensure they comply). Both provisions carry a stated civil penalty of 5,000 penalty units. ASIC’s RG 273 states the duty cannot be avoided by any notice or disclaimer, or by asking the consumer to consent to a conflict of interest.

Official sources

The facts in this resource are drawn from the following official sources, each read on the date shown. If a source has changed since, the source prevails.

This resource is general information, not credit assistance or advice. It does not consider your objectives, financial situation or needs, and lender policies differ and can change without notice. Any credit assistance we provide is under our licensing arrangement described in our Credit Guide. It is also not financial product advice — we are not an Australian financial services licensee. Decisions about superannuation or other financial products should be discussed with a licensed financial adviser. Read our Credit Guide.

Last verified against official sources: · Next scheduled review by 12 October 2026 · Update sensitivity: high