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September 20, 2026 By Glenn Smith

New ATO Pre-Fill for Contractors: The Gaps You Still Need to Fill

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For the first time, contractors in certain industries will see their income partly filled in for them at tax time. The ATO is now using data from the Taxable Payments Annual Report (TPAR) to automatically pre-fill income into eligible tax returns.

On the surface, that sounds like a welcome shortcut. In practice, it's a change that needs a closer look, not a quick tick and lodge.

What's actually changing

Businesses in certain industries already report payments made to contractors through the TPAR. That data has existed for years. What's new is that the ATO is now feeding it directly into individual tax returns as pre-filled income.

The industries affected include:
  • Building and construction
  • Courier and road freight
  • Cleaning
  • Information technology
  • Security services

If a contractor works in one of these sectors, some of their income may now appear automatically when they sit down to lodge.

Why the pre-fill isn't the full picture

This is the part worth flagging to clients early. TPAR pre-fill only captures payments that businesses have reported through the TPAR system. It doesn't capture everything a contractor earns.

Income still needs to be declared separately if it comes through:
  • Platform or app-based work
  • Direct invoices to private clients
  • Cash payments

A contractor who assumes the pre-filled figure is their total income for the year risks under-reporting, even without meaning to.

Treat the pre-fill as a starting point, not a final answer. Every pre-filled amount should be checked against the contractor's own records before the return is lodged.

Where it can go the other way too

Pre-fill errors don't only run in the direction of under-reporting. Sometimes the reported figure doesn't match what a client actually received, timing differences, incorrect business details, or duplicated reporting can all throw the numbers out.

Where a pre-filled amount is adjusted, it's important to keep the supporting documentation. If the ATO asks questions later, being able to show why a figure was changed makes for a much shorter conversation.

The compliance angle clients shouldn't ignore

This isn't just a convenience feature. The ATO has been clear that TPAR data is being used alongside other data-matching programs to identify income that hasn't been reported correctly.

Contractors who've been a little loose with cash income or platform earnings in the past should treat this as a prompt to tighten things up, not a reason to relax because "the ATO already has the numbers."

The ATO is combining TPAR data with other data-matching sources to flag omitted or under-reported income, so gaps are more likely to be picked up now than in previous years.

Getting ahead of it

The contractors who come through tax time without a hiccup are usually the ones with clean, up to date records year round. That's where good bookkeeping habits pay off long before June 30 rolls around.

Clean, current records are what make it possible to check a pre-filled figure in minutes, rather than reconstructing a year of income after the fact.

Keeping income and expenses organised in Xero cloud accounting throughout the year makes it far easier to check a pre-filled figure against reality in five minutes rather than digging through a shoebox of receipts. For contractors who'd rather hand that side over altogether, Clarity Bookkeeping can keep records current so nothing gets missed.

If income has crept up or the business structure has changed, it's also worth a broader conversation with a small business accountant about whether the current setup is still the right fit.

The bottom line

TPAR pre-fill is a step toward simpler tax returns, but it's not a substitute for good records. Contractors should check every pre-filled figure, declare anything it misses, and keep documentation for anything they change.

Getting this right protects against both an unexpected tax bill and unwanted attention from the ATO's data-matching programs. Questions about how the TPAR changes apply to you?  Contact Trekk Advisory to talk it through. 

This article is general information only and does not take into account your personal circumstances. Please contact Trekk Advisory to discuss how this applies to your situation.

About Author

Glenn Smith

Glenn started in 2015 as one of our amazing accountants. He's been able to finish his accounting degree throughout the last couple of years and now works alongside our Client Managers to ensure that we are getting the best possible results for our clients. He's also our tax specialist at Trekk Townsville, managing the Income Tax influx around that fun time of year. Glenn loves sport and can watch anything and will give anything a go (that his body will allow him to!). He is a dad to a little boy called Anthony, and he and his wife volunteer their time throughout both the Scout and Girl Guide movements. The best piece of advice he's ever been given is "Whatever you do in life is going to be wrong... In someone's eyes. But it will be right in another'! So you do you and that is all that is important."

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