Responding to an ATO TPAR Audit as a Builder

What it is

The Taxable Payments Annual Report (TPAR) is the annual report builders lodge with the Australian Taxation Office (ATO) that lists payments made to contractors for building and construction services. It is required under Division 396 of the Taxation Administration Act 1953 and the Taxable Payments Reporting System (TPRS), and it sits at the heart of how the ATO finds unreported income in the building industry.

A TPAR is due on 28 August each year for the previous financial year. The ATO then runs the data against contractor income tax returns, BAS lodgements and ABN status. Mismatches trigger letters, reviews and audits, both for the builder who lodged the TPAR and for the contractors named in it.

What triggers an ATO TPAR audit

The TPAR audits the ATO runs against builders fall into three buckets.

Builder side audits

A builder who has not lodged a TPAR despite reporting building and construction income on the business activity statement. A TPAR lodged late or amended several times. Large variances between TPAR totals and the contractor and consultant expenses claimed in the income tax return. ABN totals on the TPAR that do not exist on ABN Lookup or that show as cancelled at the time of the payment.

Contractor side audits flowing back to the builder

When the ATO audits a contractor named on a builder TPAR and the contractor cannot reconcile what the builder reported, the ATO often goes back to the builder to verify the underlying records. The builder is not the target but the records get pulled.

Industry campaign audits

The ATO runs targeted industry campaigns against building and construction every year. These pull builders by post code, by revenue band, by the number of contractors on the TPAR or by patterns the ATO has seen in similar businesses.

What the ATO will ask for

The information request that lands is broad.

Records the ATO will want

Bank statements for the audit year, the general ledger, subcontractor invoices for the year, the TPAR working papers with the breakdown of payments by contractor, copies of the contractor agreements, ABN verifications, evidence the builder checked GST registration before allowing GST on the invoice, and reconciliation between the TPAR, the income tax return and the BAS lodgements.

What gets data matched

The ATO matches the TPAR against ABN Lookup, Single Touch Payroll where applicable, the contractor own income tax return, the contractor BAS and any directors employed under PSI rules. The match runs automatically and a flag at any one point in the chain produces a contact letter.

Where most builders trip up

The patterns repeat. ABNs entered on the TPAR that are wrong by one digit, which causes the contractor to look unreported. GST allowed on invoices where the contractor was not GST registered at the time of supply. Contractors classified as subcontractors when the ATO sees them as employees, which then flows into superannuation and PAYG withholding exposure.

The other common trip up is the labour hire question. Payments to a labour hire firm for workers placed on site are reportable on the TPAR, and many builders miss this. So are payments to a related company or trust that supplies labour to the build.

The cash payment trap also catches builders. Cash paid to a contractor must still be reported on the TPAR. Cash payments not reported are the single fastest way to attract an audit.

Immediate response actions

The ATO contact escalates in stages. The early stages are the cheapest place to close the file.

When the first letter arrives

Read the letter and identify whether it is a review or an audit. A review is information gathering. An audit is a formal assessment. Diary the response date. Forward the letter to the registered tax agent.

Within seven days

Reconcile the TPAR for the year in question against the general ledger and the BAS. Pull every subcontractor invoice and check the ABN status at the date of the invoice using the ABN Lookup historical data. Where a contractor ABN was not active, the builder may have a PAYG withholding obligation that should be addressed before the ATO finds it.

Before responding

If errors are identified, lodge an amended TPAR. Voluntary disclosure reduces administrative penalties significantly and signals cooperation. The ATO penalty regime applies a base penalty of 25 to 75 percent of the shortfall depending on whether the conduct was reasonable care, recklessness or intentional disregard, and voluntary disclosure can reduce this materially.

If the audit moves to a position paper

A position paper is the ATO formal statement of its proposed assessment. The builder has a statutory period to respond. The response should be drafted with the tax agent and, where the dollar amount is material, with a tax lawyer. After the position paper, the ATO can issue amended assessments and the builder can object under Part IVC of the Taxation Administration Act and ultimately appeal to the Administrative Review Tribunal or the Federal Court.

TradeLens framing

The TPAR audits that hurt are the ones where the builder did not see the mismatch first. TradeLens reconciles a builder TPAR working papers against ABN Lookup, GST registration status at the date of supply and the general ledger, and surfaces every contractor row that the ATO will flag. Find the variance before the ATO does and the audit becomes a lodgement amendment, not a debt.