Buying a mortgage broker trail book means buying an expected stream of contractual commission receipts, not a guaranteed annuity. A disciplined buyer should prove the cash received, reconcile it to loan-level data, understand why loans leave the book, and confirm in writing that the relevant commission and servicing arrangements can transfer on acceptable terms.

The investigation must extend beyond revenue. The buyer needs a workable licensing or authorisation position, usable client records, lawful data handling, servicing capacity and clear allocation of historic complaints, clawbacks and adjustments. Without those elements, a headline trail multiple says little about value.

Define exactly what is being bought

Start with a written perimeter. A “trail book” may describe commission rights, servicing rights, client records, contact details, lender or aggregator relationships, workflow data and goodwill—but those things do not necessarily transfer together. Identify the selling entity, each asset or contractual right, excluded loans, and what the buyer will be expected to do after completion.

Ask the seller and aggregator to distinguish:

  • the legal entitlement to each trail payment and the calculation basis;
  • the party that receives gross commission and every deduction before the seller’s bank account;
  • any servicing, accreditation, authorisation or lender-panel condition attached to payment;
  • whether client files, consents, notes and communication history may be transferred;
  • whether the seller retains rights to new lending, refinances, referrals or particular clients; and
  • what happens on borrower discharge, refinance, arrears, hardship, broker misconduct, complaint or seller insolvency.

The sale agreement cannot create rights that the seller does not hold. Have a lawyer compare the proposed asset schedule with the aggregator agreement, commission schedules, lender terms and any side letters.

Rebuild the income from source evidence

Obtain at least 24–36 months of monthly aggregator statements, bank receipts and loan-level records, if available and appropriate for the book. Reconcile gross trail on each statement to fees, splits, reversals and other adjustments, then to the net cash received. Explain timing differences rather than forcing a match.

At loan level, request an anonymised dataset during early diligence showing a stable loan identifier, lender, original and current balance, settlement date, product type, trail rate or band, monthly trail, payment status and discharge date where relevant. Later access to identifiable client data must follow the applicable privacy and contractual process.

Test totals and samples. Select high-value loans, different vintages and lenders, zero-payment accounts and loans that disappeared between periods. Trace each from source file to statement and cash. Duplicate identifiers, manual changes, negative adjustments or static balances require explanation.

Measure run-off rather than accepting one retention figure

Historical trail can fall because loans amortise, refinance, discharge, become ineligible or cease paying trail under the applicable arrangement. Calculate changes separately for loan count, outstanding balance, gross trail and net receipts. Cohort the book by settlement vintage, lender, borrower concentration, product and seller-originated versus acquired loans.

Use monthly movements to bridge the opening book to scheduled balance reduction, additions, refinances retained or lost, full discharges, lender or product movements, non-paying loans and unexplained changes. Exclude new originations from forecasts unless the buyer will actually receive and fund that capability.

Stress-test more than one case. A base case can follow supportable cohort behaviour; a downside case should increase attrition, allow for servicing costs and delayed transfers, and remove uncertain receipts. Treat any purchase multiple as an output of verified cash-flow assumptions—not the investigation itself.

Confirm transfer, authorisation and ongoing obligations

Request written confirmation of the aggregator’s consent process, required documentation, fees, timing, warranties, compliance review and conditions precedent. Determine whether lenders must also consent or re-accredit the buyer. Ask what can cause trail to be withheld, redirected or terminated and whether a change in ownership, licence, representative status or aggregator triggers those rights.

ASIC explains that credit representatives conduct specified credit activities on behalf of a credit licensee; licensees must conduct background and training checks, confirm relevant Australian Financial Complaints Authority membership, give written consent and maintain supervision systems (ASIC). ASIC’s professional registers show credit licence and representative status and authorised services (ASIC). Verify the buyer’s proposed position independently and make completion conditional on necessary approvals.

Buying trail does not dilute obligations when credit assistance is later provided. ASIC’s RG 273 says the mortgage-broker best interests obligations are principles-based and cannot be satisfied merely through consumer consent to a conflict; the circumstances of the credit assistance matter (ASIC). For a credit licensee, general conduct obligations include acting efficiently, honestly and fairly, maintaining competence, managing conflicts, supervising representatives and having dispute-resolution, compensation and risk-management arrangements (ASIC). Map who will service acquired clients, under whose authority and with what records, controls and capacity.

Investigate compliance history and client data

Request complaint and remediation registers, internal and external dispute files, compliance reviews, breach reports, lender and aggregator audit findings, professional indemnity notifications, clawbacks and unresolved payment disputes. Reconcile complaints to client and loan identifiers. Specialist advisers should determine what liabilities remain with the seller, what follows the transferred business and what warranties, indemnities, retentions or adjustment mechanisms are appropriate.

Do not use unrestricted client files as the first diligence dataset. The OAIC says vendors and prospective purchasers must protect privacy rights during a business sale where the Privacy Act applies; it recommends considering de-identification, confidentiality controls and limited data-room access (OAIC). APP 6 regulates use and disclosure for secondary purposes, while APP 11 requires reasonable steps to protect information against misuse, interference, loss and unauthorised access, modification or disclosure (OAIC). Privacy coverage and the lawful pathway for transfer depend on the entities, transaction structure, original collection purposes and consents; obtain legal advice before identifiable data moves.

Use decision gates, not a single score

Gate Evidence that supports proceeding Reason to pause
Cash verification Statements reconcile to bank receipts and loan totals Persistent unexplained variances or manual overlays
Durability Cohort run-off is measurable and downside-tested Forecast relies on one blended retention rate
Transferability Written approvals, conditions and timing are understood Consent is assumed or can be withdrawn unexpectedly
Operating readiness Authority, accreditations, systems and staff are confirmed Buyer cannot service the book from completion
Client and compliance risk Controlled data transfer and complete issue registers Missing files, unknown complaints or unclear liabilities
Economics Price model includes run-off, fees, servicing and tax advice Multiple is applied to unverified gross trail

A failed gate may require more evidence, a condition precedent, remediation, a price or structure change, staged access, deferred consideration, retention or a decision not to proceed. Design the response with appropriate advisers.

Questions buyers often ask

Is a trail book passive income?

Not necessarily. Even if commission receipts continue without new settlements, the buyer may inherit client enquiries, recordkeeping, compliance, complaints, technology, privacy and refinancing work. Model the required people and systems rather than treating net receipts as profit.

How many months of evidence should a buyer review?

There is no universal period. Twenty-four to 36 months is a practical starting request, but older vintages, recent changes, irregular adjustments or limited data may justify longer. The aim is to observe cohorts and explain movements, not collect a fixed number of statements.

Should the buyer pay a multiple of monthly trail?

A multiple can summarise a negotiated price, but it cannot verify the income or its duration. First build a cash-flow view using reconciled net receipts, run-off, concentration, transfer timing, servicing costs and downside assumptions. Valuation, tax and legal advisers should assess the appropriate method and transaction terms.

Sources

Disclaimer

This article provides general information only. It does not constitute legal, tax, accounting, financial, credit, valuation or other professional advice. Circumstances differ. Obtain advice from appropriately qualified advisers before acting or entering a transaction.