Australian Business Register · Live Data · ATO Withholding Rules
Enter the subcontractor's 11-digit ABN to check status, GST registration, and ATO obligations before you pay.
11 digits — spaces are ignored. Example: 51 824 753 556
ABN lookup coming very shortly — we're activating the Australian Business Register API (1–2 business days). Enter an ABN above and you'll get a live result as soon as it's active. In the meantime, verify directly at abn.business.gov.au →
Checking ABN register…
ABN status and builder's licences are held in separate systems. Check the relevant state portal below.
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Data source: ABN data is sourced from the Australian Business Register via the ABN Lookup API (business.gov.au). Register data may lag real-time changes by up to 24–48 hours. Not tax or legal advice — always verify with your accountant or tax adviser before withholding or adjusting payment amounts. Builder's licence links are provided as a convenience; verify current licence status directly with the relevant licensing body.
Also on ConstructTrackPro
12-question ATO risk assessment for contractor vs employee arrangements.