ABN Lookup Australia: Free Business Number Search Guide

ABN Lookup Australia: Free Business Number Search GuideThe free ABN Lookup tool at abr.business.gov.au lets anyone verify an Australian Business Number, its GST registration status, trading names, and entity type. It's maintained by the Australian Business Register (ABR) and updated daily.The Australian Business Register runs one of the world's best free company registries. Every ABN since 2000 is searchable at abr.business.gov.au — no login, no rate limits, updated daily. Here's how to get the most out of it.## What an ABN Actually Is An Australian Business Number is an 11-digit identifier assigned by the ATO to any entity dealing with the tax office — companies, sole traders, trusts, partnerships, super funds. It's the primary business ID in Australia and is required to register for GST, PAYG, and to raise a tax invoice.## Using ABN Lookup: Step by Step Go to [abr.business.gov.au](https://abr.business.gov.au). The search bar accepts: - An 11-digit ABN - A 9-digit ACN - An entity or trading name (partial matching supported) - A postcode Results show the ABN, entity type, status, GST registration, and trading names.## What Each Field Means - **Entity Type** — legal structure (Australian Private Company, Sole Trader, etc.) - **Status** — Active or Cancelled - **ABN Status From** — the date the current status took effect - **Entity Name** — the registered legal name - **Business Names** — trading names (from ASIC's Business Names Register) - **GST** — registered/not registered + effective dates - **DGR Endorsement** — Deductible Gift Recipient status (relevant for charities)## GST Registration: Why It Matters An ABN alone does not authorise charging GST. The entity must be **separately registered for GST** — required if annual turnover exceeds AUD 75,000. If you receive a tax invoice from an entity not registered for GST, you cannot claim the GST portion as a credit.## ABN vs ACN vs TFN - **ABN** — 11 digits. Business identifier. Public. - **ACN** — 9 digits. Company-only identifier from ASIC. Public. - **TFN** — 9 digits. Tax File Number for individuals or entities. Private.Steps

Go to abr.business.gov.au Open the official ABN Lookup — abr.business.gov.au. It's free, requires no account, and covers every ABN issued since 2000.

Search by ABN, ACN, or name Enter the 11-digit ABN, the 9-digit ACN, or the entity/trading name. Partial name search is supported.

Check GST registration The result shows current + historical GST status. This matters for issuing tax invoices — non-GST entities can't charge GST.

Verify entity type + status Confirm the entity type (Sole Trader, Company, Trust, Partnership) and status (Active vs Cancelled). Trading with a cancelled ABN is a red flag.

Download the ABN details PDF Click 'Print' → 'Save as PDF' for a timestamped record. Useful for compliance evidence and vendor onboarding.

Frequently asked questionsIs ABN Lookup free?Yes — abr.business.gov.au is completely free with no login required. Bulk API access (ABN Lookup Web Services) is also free but requires registering for a GUID.What's the difference between an ABN and an ACN?ACN (Australian Company Number) is a 9-digit ID for companies only, issued by ASIC. ABN (Australian Business Number) is 11 digits and issued to any entity that deals with the ATO — companies, sole traders, trusts, partnerships. Companies have both; sole traders only have an ABN.Can I check GST registration on ABN Lookup?Yes. Every ABN result shows current and historical GST registration status with effective dates. Verify GST status before accepting a tax invoice — invoices from non-registered entities can't include GST.How often is ABN Lookup updated?Daily. The ABR pushes updates from the ATO overnight, so name changes, address updates, and cancellations appear within 24 hours.Can I bulk-lookup ABNs?Yes — via the free ABN Lookup Web Services API. LemReveal's Company Lookup wraps this API and cross-references it with 40+ other national registries in one search.

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