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Operator guide · Updated 31 August 2026

Insurer SLAs and Supplementary Quotes, Stage by Stage

An insurer repair is not one job with one price. It is a sequence of six moments, and at each of them either a clock starts or a number is decided, usually by someone who is not standing in your workshop. Shops that lose money on insurer work almost never lose it on the labour rate. They lose it in the gap between the original quote and the supplementary, in unrecorded hold time waiting on a part or an assessment, and in loan car days nobody is paying for. This is what governs each stage, what the repair Code actually requires, and what to measure so the argument is about a record rather than a memory.

Before you rely on this: it is plain-English guidance, not legal advice. Every row names the instrument it rests on and links the body that administers it, because fees, thresholds, rates and licence classes all change on their own timetable. Confirm your own position with the regulator named in your row before you commit to it.

Start here

The instruments behind an insurer repair

Three things govern the relationship, and they operate at different levels. Knowing which one a dispute belongs to is most of knowing how to resolve it.

  • The Motor Vehicle Insurance and Repair Industry Code of Conduct

    The industry instrument covering dealings between insurers and repairers, including how quotes and supplementaries are handled, how assessments are conducted, and the dispute pathway when the two sides disagree. It is administered independently of any single insurer and carries its own complaint and escalation process. In New South Wales it is made mandatory by regulation, which changes the answer to what happens when an insurer simply declines to engage with it.

  • Your own repairer agreement with each insurer

    The commercial layer, and the one that actually sets your cycle-time targets, authority limits, rate schedule, parts policy and audit obligations. It varies by insurer and by shop, which is why no honest page publishes those numbers. It is also the document most often signed once and never re-read, including by the person arguing about a supplementary three years later.

  • Australian Consumer Law, which sits underneath both

    The vehicle owner is the consumer, and the consumer guarantee of due care and skill applies to your repair regardless of who is paying for it. An insurer's assessment does not transfer that obligation. If an insurer declines to authorise work that the vehicle needs to be safe, the answer is a written record of what you recommended and why, not a repair you are not prepared to stand behind.

  • Repairer licensing, in the states that have it

    Motor vehicle repair licensing is state law and not uniform: New South Wales licenses motor vehicle repair businesses and tradespeople under its motor dealers and repairers framework, and Western Australia licenses motor vehicle repair businesses and repairers under its own Act. Other jurisdictions regulate the work through fair trading and consumer law rather than a repairer licence. Check the state you actually operate in before assuming either way.

Stage by stage

The six moments that decide the money

Each row is a point at which a clock starts, a number is set, or a decision passes out of your hands. The discipline is the same at every one: put the time and the reason in the file at the moment it happens, because reconstructing it later is what turns a recoverable cost into an argument you lose.

1

Assignment and first contact

What governs it
Repairer agreement allocation terms, and the Code provisions on dealings between insurer and repairer

The claim lands, and the first clock starts before the vehicle does. Most agreements measure from allocation rather than from arrival, which means a customer who takes four days to bring the car in has already spent four days of your cycle time. Separating allocation date, customer contact date and vehicle arrival date at intake is the single cheapest thing a shop can do to protect its own numbers, because it turns one bad cycle time into three facts.

  • Record allocation date, first customer contact, and vehicle arrival as three separate fields
  • Note the owner's right to choose a repairer where the policy provides one, and what the customer chose
  • Capture the excess position at intake, so the conversation at delivery is not the first one
  • Photograph the vehicle as received, including pre-existing damage outside the claim
2

Quote and assessment

What governs it
Code provisions on quoting and assessment, and the assessment terms of the repairer agreement

The quote is your position and the assessment is the insurer's. Where they differ, the difference is a conversation, not a correction, and the Code contemplates a process for resolving it rather than a unilateral rewrite. What matters operationally is that the disagreement is captured against the job in writing at the time. A verbal agreement to reduce a line and revisit it later is the most expensive sentence in this trade.

  • Keep your quote as issued, and record the assessed position separately rather than overwriting it
  • Photograph every damaged item you have quoted, from an angle that shows the damage
  • Note times and methods for anything not in the times guide, with the reason
  • Where an item is declined, record it and tell the owner in writing, not just the insurer
3

Supplementary quotes

What governs it
Code provisions on supplementary quotes, and the authority limits in the repairer agreement

Hidden damage is normal, and the supplementary is how it gets paid for. Two things destroy margin here. The first is starting the work before authority arrives, because once the panel is off, negotiating leverage has gone. The second is bundling several discoveries into one late supplementary, which reads to an assessor as a single large increase rather than as three ordinary ones. Raise each on discovery, with the photograph attached, on the same thread as the original.

  • Raise the supplementary at the moment of discovery, not at the end of the strip
  • Attach the photograph that shows the hidden damage to the supplementary itself
  • Keep every supplementary on one thread against the claim, so the sequence is visible
  • Record the authority number and the time it was received before the work proceeds
4

Parts, and the hold time nobody is measuring

What governs it
Parts policy in the repairer agreement, and Code provisions on parts usage and disclosure

Parts are where cycle time actually goes. A vehicle sitting in the yard waiting on a back-ordered panel is consuming your floor space, possibly your loan car, and all of your cycle-time average, and none of that is visible unless hold time is recorded as its own state. Parts policy also carries a disclosure dimension: which parts are new genuine, aftermarket, parallel or recycled is something the owner is entitled to understand, and the Code addresses it.

  • Record hold time as its own status, distinct from work in progress
  • Log the order date, the promised date and the actual date for every part
  • Record parts type per line, and disclose it to the owner rather than only to the insurer
  • Where a back order pushes the delivery date, tell the owner the day you learn it, not the day before
5

Loan cars, mobility and the days in between

What governs it
Mobility and loan vehicle terms in the repairer agreement, and the policy the owner holds

A loan vehicle is a real cost per day and it is frequently the least controlled item in the shop. Whether the insurer, the owner or the shop wears a given day depends on why the vehicle was held that day, which is only knowable if the hold reason was recorded at the time. Shops that track loan days against the claim, with a reason code per day, recover materially more of them than shops that reconcile a fleet spreadsheet at month end.

  • Attach the loan vehicle to the claim, not to a separate fleet list
  • Record a reason per held day, so recoverable and non-recoverable days separate themselves
  • Capture the condition and fuel at issue and at return, with photographs
  • Reconcile loan days at delivery while the reasons are still fresh, not at month end
6

Completion, invoice and payment

What governs it
Invoicing and payment terms of the repairer agreement, and Australian Consumer Law guarantees to the owner

The invoice has to reconcile to the authorised position line by line, including every supplementary, or it will be queried and the payment clock restarts. Anything you agreed verbally and never got an authority number for is, at this point, work you did for free. The owner's excess is the other half: it is collected by you in most arrangements, and a delivery conversation is the wrong time for the customer to hear the figure for the first time.

  • Reconcile the invoice to the original authority plus every supplementary authority number
  • Issue a tax invoice with GST and your ABN, and keep the photo pack attached to the job
  • Collect the excess at the agreed point, having flagged the amount at intake
  • Track payment age per insurer, because a slow payer is a working capital problem, not an admin one

What to hold

The six numbers worth measuring per insurer

Not per job, per insurer. The point of these is comparison: an insurer whose work looks profitable on the rate and unprofitable on the cycle is a decision you can only make with the numbers side by side.

Key to key, split by hold

Total days from vehicle arrival to delivery, with hold time separated out. A shop whose key-to-key is poor because of parts availability has a different problem from one whose production is slow, and one average hides both.

Touch time against elapsed time

Hours actually worked on the vehicle divided by the days it sat in your shop. This ratio is the honest measure of throughput and it is almost always worse than it feels.

Supplementary rate and supplementary value

What proportion of jobs raise a supplementary, and what proportion of total revenue arrives that way. A high value with a low rate means a few very large ones, which is an estimating problem rather than a hidden damage one.

Authority turnaround, per insurer

Hours from raising a supplementary to receiving authority. This is the number that decides whether an insurer's work fits your production plan, and it is the one most worth having in front of you at agreement renewal.

Loan car days, recoverable and not

Days issued, days recovered, days written off, with the reason. The written-off column is a direct margin figure and it is usually larger than shops expect.

Days to payment, per insurer

From invoice to cleared funds. Two insurers at the same rate with a three-week difference in payment age are not the same commercial proposition.

What goes wrong

Where shops lose money on insurer work

None of these are about the labour rate, which is the thing shops spend the most time negotiating and the least time recovering.

  • Starting the strip before the authority lands

    Once the panel is off, the negotiating position is gone and the vehicle is immobilised in your shop. Raise, wait for the number, then proceed, and record the wait as hold time rather than absorbing it.

  • Bundling supplementaries into one late request

    Three discoveries raised on the day they happened read as ordinary. The same three raised together at the end read as an overrun, and get treated like one.

  • Photographs that do not show the damage

    A wide shot of a car is not evidence of a bent rail. Photograph the item you are claiming, from an angle that shows why it needs replacing, at the moment you found it.

  • Loan car days with no reason attached

    A day nobody can explain is a day nobody will pay for. The reason code costs a second at the time and is unrecoverable a month later.

  • Verbal agreements with an assessor

    Assessors move on, and so does the memory of the call. If it is not on the thread with an authority number, it did not happen, and the invoice will say so.

  • Never re-reading the repairer agreement

    The rate schedule, the authority limits and the audit rights are all in a document most shops signed once. Re-read it before the renewal conversation, not during the dispute.

Questions

Common questions

What is the Motor Vehicle Insurance and Repair Industry Code of Conduct?

It is the industry instrument governing dealings between insurers and smash repairers in Australia, covering quoting and supplementary processes, how assessments are conducted, parts usage and disclosure, and a dispute pathway when the two sides cannot agree. It is administered independently of any single insurer and has its own complaint and escalation process. In New South Wales it has been made mandatory by regulation, which matters when an insurer declines to engage with it at all.

When should I raise a supplementary rather than absorbing the work?

At the moment you discover the damage, before the associated work starts. The two habits that cost the most are proceeding on the assumption that authority will follow, which removes your negotiating position along with the panel, and holding several discoveries to raise together at the end, which presents as a single large overrun rather than as three ordinary findings. Raise each on discovery, attach the photograph that shows it, and record the authority number before the work proceeds.

Does an insurer's assessment override my duty to the vehicle owner?

No. The vehicle owner is the consumer, and the Australian Consumer Law guarantee that services are provided with due care and skill applies to your repair regardless of who is paying for it. If an insurer declines to authorise work the vehicle needs, the answer is a clear written record to both the insurer and the owner of what you recommended and why, not a repair you would not put your name to. Where safety is involved that conversation belongs in writing on the day, not at delivery.

How should hold time be recorded separately from work in progress?

As its own status on the job, with a reason, so that a vehicle waiting on a back-ordered part is not counted as a vehicle being worked on. Without that split, one cycle time average hides two completely different problems: a parts supply problem you solve with ordering discipline and supplier choice, and a throughput problem you solve with scheduling and capacity. Shops that separate them stop arguing about the wrong one.

Do I need a licence to run a smash repair business?

That depends on the state. New South Wales licenses motor vehicle repair businesses and tradespeople under its motor dealers and repairers framework, and Western Australia licenses motor vehicle repair businesses and repairers under its own Act. Several other jurisdictions regulate repair work through fair trading and consumer law rather than a specific repairer licence. Because this is state law and it is not uniform, check the requirement with the regulator in the state you actually operate in.

Which numbers should I take into a repairer agreement renewal?

Authority turnaround, key to key split by hold time, supplementary rate and value, loan car days written off, and days to payment, all broken down per insurer rather than averaged across the shop. A rate discussion without those numbers is a discussion about one variable. With them it becomes a discussion about the total cost of that insurer's work to your business, which is the conversation actually worth having.

About the author

Bishal Shrestha, Founder of OneBookPlus

Bishal Shrestha

Founder & CEO, OneBookPlus

Bishal spent a decade running digital projects for Australian small businesses before founding OneBookPlus. He writes and maintains these pages, and publishes what OneBookPlus does not do alongside what it does.

A decade running digital projectsPersonal site: bishal.com.auMelbourne, Australia
Read the founder bio

How this page was researched

The state-by-state figures on this page come from each state and territory regulator directly, linked in the row they belong to, because the rule differs by jurisdiction and a national summary would be wrong in six places. Everything said about OneBookPlus describes what the product does today.

Put the clock, the photos and the supplementary thread on the claim

Allocation, arrival, hold and delivery as separate dates, every supplementary on one thread with its authority number, loan days with a reason attached, and the photo pack on the same job the invoice comes off. Free to start, no card.

Last reviewed and updated: by Bishal Shrestha