Trail Commission Explained: Rates, Timing and How It’s Actually Paid

Trail commission is an ongoing monthly payment from a lender to a mortgage broker for as long as a loan stays on that lender’s book and performs. It’s typically calculated at around 0.15% to 0.20% per annum plus GST of the outstanding loan balance, paid monthly in arrears, and it stops the day the loan is refinanced, sold or repaid. Because it recurs, trail is what turns a broking practice into a sellable asset — and books currently change hands at roughly two-and-a-half to three times annual trail income.

Upfront commission pays this month’s bills. Trail is the business. This guide covers how it’s calculated, why it varies more than the headline rate suggests, and what makes one broker’s trail worth substantially more per dollar than another’s.

What is trail commission?

Trail is the lender’s ongoing payment for the loan continuing to sit on its book. It compensates the broker for originating a loan that stayed — and, in principle, for the ongoing relationship with the client.

Structurally it’s an annuity. Each loan you settle adds a small monthly payment that continues, declining slowly, for as long as the borrower stays put. One loan is trivial. Four hundred loans compounding over a decade is a business.

Like upfront, trail flows lender → aggregator → broker, so what reaches you depends on your aggregator arrangement as well as the lender’s schedule.

How much is trail commission?

Typical range: around 0.15% to 0.20% per annum plus GST of the outstanding balance.

That range covers most standard residential lending, but the edges are wider than brokers often assume:

• Some products pay no trail at all in year one, starting from year two onward.
• Some specialist and non-bank products pay materially more — up to roughly 0.35% p.a.
• Commercial, SMSF and asset finance products follow entirely different structures.

The critical point: two loans of identical size, settled on the same day with different lenders, can pay meaningfully different trail for thirty years. On a large book, that difference compounds into a number worth knowing.

What is stepped trail, and why does it matter?

A stepped (or tiered) trail structure pays a rate that increases with the age of the loan. A common shape:

Illustrative structure only — actual steps, timing and rates vary by lender and product.

The logic is retention: the lender pays you more for a loan you’ve kept. The problem is verification. A stepped increase happens on an anniversary date, automatically, in a system you can’t see. If it doesn’t happen — because the loan was coded wrong, or migrated during a system change, or simply missed — nothing alerts you. You keep receiving trail. It’s just the wrong trail, quietly, for years.

This is one of the highest-value checks in commission reconciliation, and almost nobody does it manually, because it requires knowing every loan’s settlement date, every lender’s step schedule, and cross-referencing them monthly.

How is trail actually calculated and paid?

Calculated on the outstanding balance. Not the original loan amount, not the approved limit — the balance actually owing.

Three things follow from that:

1. Trail declines as the loan amortises. Every principal repayment slightly reduces next month’s trail.
2. Extra repayments accelerate the decline. A client who pays down aggressively reduces your income, even though they’re a good client and staying put.
3. Offset balances may reduce it further, depending on the lender — some calculate trail net of offset in the same way upfront is calculated net of offset. This varies, and it’s worth confirming for the lenders you write most.

Paid monthly, in arrears, with a lag. The trail payment reaching you in a given month generally relates to a balance measured in the previous month, and the aggregator’s payment run adds further delay. So a payment arriving in, say, March may reflect a February balance on a loan that has since been discharged.

This lag is a recurring source of false alarms in reconciliation. A figure that looks wrong is often just a figure measured at a different point in time. Which is exactly why the balance date matters more than the payment date when you’re checking.

Balance measurement varies. Some lenders use a month-end snapshot; others use an average daily balance across the month. On a loan with a fluctuating offset, those two methods produce different numbers from identical facts.

Worked example

A $650,000 loan at 0.15% p.a. trail, P&I over 30 years:

Now scale it. A book of 400 loans averaging $600,000 outstanding, at 0.15%:

• Annual trail: $360,000
• Monthly: $30,000
• At a 2.4× valuation multiple, the book is worth roughly $864,000

Two observations. First, a 3% error rate across that book is around $10,800 a year — and at a 2.4× multiple, about $26,000 off the sale value. Second, that error would show up as roughly $900 a month across thousands of line items. Nobody notices $900 spread over 400 payments.

Figures are illustrative and ignore extra repayments, redraw, offset and rate changes.

When does trail stop?

Immediately, and usually without notice, when:

• The borrower refinances to another lender
• The property is sold and the loan discharged
• The loan is repaid in full
• In some agreements, the loan falls into serious arrears or default

There’s no notification obligation to you. The first signal is usually the absence of a payment — which is precisely the hardest kind of change to detect, because nothing appears on a statement to be checked. An incorrect payment is visible. A missing one is a gap in a list nobody’s counting.

If the discharge happens inside the clawback window, you also lose part or all of the original upfront. See the complete guide to clawbacks for how that interacts.

Why your trail book is your most valuable asset

This is the part most brokers underestimate until they’re selling.

A broking business is valued primarily on its trail book, using a simple formula:

Valuation = annualised recurring trail income × valuation multiple

Where multiples currently sit. The long-standing industry convention was 1.5× to 2.0×. That’s no longer where the market is. An actuarially determined median multiple was recently put at around 2.39×, up from 2.3× the previous financial year — while actual sale prices have run higher, with buyers paying an average close to three times annual trail. TrailBlazer Finance reported average sale multiples climbing to around 3× in FY2024–25, a 6% rise on the prior year’s 2.83×, with an average of six bids per book listed. Sale prices reported range from about $100,000 to over $2 million.

Capital markets have started treating mortgage trail as bond-like income rather than variable operational revenue, and consolidation has brought well-capitalised buyers into the market. That’s the demand side of the story.

The part that should change how you operate. Multiples are not uniform. In FY25 the observed range ran from about 1.92× to 2.77× — described as a roughly 44% gap between a good book and a not-so-good one, on the multiple alone. Two brokers with identical annual trail income can receive materially different amounts for their books.

What drives you up or down that range:

That last row is where trail reconciliation stops being an accounting hygiene issue and becomes a valuation issue. Your book is valued on the trail you can evidence, not the trail you’re theoretically entitled to. Leaking trail costs you twice: the income you didn’t receive, and that shortfall multiplied by two-and-a-half or three at sale.

A note of caution on multiples. Current levels reflect strong buyer demand and a rising property market. Commentators have flagged that a flattening or falling market — or renewed rate rises — would put downward pressure on valuations. These are point-in-time figures, not a promise. Get an independent appraisal before making decisions on them.

Why does trail go missing?

Rates are broadly standardised. Calculation and administration are not. The recurring failure modes:

1. A stepped increase that never stepped — the anniversary passed, the rate didn’t change.
2. Trail simply stopped on a discharged loan and nobody counted the absence.
3. Balance measurement differences — month-end snapshot versus average daily balance, particularly on offset-heavy loans.
4. Loans lost in lender system migrations or product transfers, where commission coding didn’t carry across.
5. Split loans where each portion attracts a different rate, and only one was applied.
6. Aggregator split errors — the lender paid correctly, the split applied to it didn’t.
7. Statements as summaries — most aggregator reporting shows totals, not the loan-by-loan calculation you’d need to verify anything.

The structural problem: a 400-loan book generates roughly 4,800 trail line items a year. Manual checking isn’t realistic, so in practice almost none of it is checked. A small percentage variance, sustained, becomes a five-figure annual leak that never presents as an alarming number — just a slightly smaller deposit each month, indefinitely.

This is the problem CommissionsIQ was built for: reconciling every trail payment against what the lender’s schedule says you were owed, flagging stepped rates that didn’t step, and catching trail that stopped.

Frequently asked questions

The bottom line

Trail is easy to describe and hard to verify, and the gap between those two facts is where broking businesses quietly lose value.

Three things worth doing:

1. Know each lender’s structure, including whether trail is stepped and when the steps occur. Stepped rates that never stepped are among the most common and least detected errors in broker income.
2. Watch for trail that stops. Reconcile the loans you expect to be paid on against the loans you were actually paid on — a missing payment is invisible unless you’re looking for absences.
3. Treat your trail book as an asset from day one. It’s valued on evidenced, normalised income. Clean reconciliation isn’t administration — it’s the difference between the top and bottom of a 44% valuation range.

Related reading

• How Mortgage Broker Commissions Work in Australia: Upfront vs Trail — the full remuneration picture
• Mortgage Commission Clawbacks in Australia — what happens when a loan discharges early
• Commission calculator — project trail income over the life of a loan
• Commission tracking and reconciliation — how CommissionsIQ verifies trail

Sources and further reading

• Mortgage Professional Australia — reporting on trail book valuation multiples, including actuarially determined median figures via TrailBlazer Finance and commentary from Jeff Zulman on seasoning and run-off
• The Adviser — reporting on FY2024–25 trail book sale multiples, bidding activity and the observed valuation range between higher- and lower-quality books, via TrailBlazer Finance
• The Broker Times — trail book valuation methodology and the annualised recurring trail income × multiple formula
• MFAA — industry guidance on broker remuneration ranges
• ASIC — Report 516: Review of mortgage broker remuneration
• Lender commission schedules as published via aggregators

Always verify against your own aggregator’s current commission schedules, and obtain an independent appraisal before acting on any valuation figure. Rates, calculation methods and market multiples change. This guide explains the mechanics; it is general information, not financial, tax or legal advice.

This is general information, not financial, tax or legal advice. Figures are indicative, vary by lender, product and settlement date, and are not a quote for any particular loan. Always verify commission entitlements against your aggregator's current schedules.