What is abn, tfn, gst & payg-w stack?
The Australian registration stack done once, in the right order, with the thresholds that trigger each explained.
There is no Australian equivalent to walking into one office and coming out with a single number that covers tax, GST and payroll, the way India's GST+PAN model works. The AU stack is five separate registrations sitting on two different registers, both run by the ATO: an Australian Business Number (ABN) via the Australian Business Register (ABR), a company tax file number (TFN), GST registration, PAYG withholding registration, and — for every individual who becomes a director — a director ID via the Australian Business Registry Services (ABRS). Each one answers a different question a counterparty, a bank, or the ATO will eventually ask, and getting the order wrong is the single most common way a new AU entity loses weeks it didn't need to lose.
Order is the whole game. A director ID has to exist before the person it belongs to is appointed as a director — not after, not simultaneously, before. If incorporation happens first and director ID applications happen second, ASIC will reject the appointment and the founder is back at the start of the queue. The ABN, by contrast, is the one step that's genuinely designed to bundle: GST and PAYG withholding can both be opted into on the same ABN application, which is the fastest path if the founder already knows they'll cross the $75,000 GST turnover threshold or will have employees from day one. Skip that opt-in and both have to be added later through ATO Online Services for Business or the Business Portal — authenticated with myID and Relationship Authorisation Manager (RAM) — which works fine but is a second trip instead of one.
Who does what
Registrations are prepared as data entry — unregulated; anything that constitutes tax advice about them sits with your registered tax agent.
Who does what
| Your CapEasy team | ABN, TFN, GST & PAYG-W stack, the reconciliations and reporting behind it, and the questions list that keeps it honest. |
| Your registered BAS or tax agent | Everything that carries a licence in Australia — rendered exactly as written: work out what goes on your bas, or advise you on it — under tasa 2009 that requires registration we do not hold. |
| You | One conversation with one named person, and the decisions that are genuinely yours. |
ABN, TFN, GST & PAYG-W stack in Australia
Director ID has to exist before the appointment, not after
Every individual who becomes a director of an Australian company must hold a director ID before they are appointed — this is a hard sequencing rule under the Corporations Act, enforced by ABRS. Residents apply online via myID through the ABRS service, and identity verification is usually instant to a few days once myID confirms it. Non-residents use the paper NAT 75433 form with certified identity documents, which can take weeks rather than days — a timeline that catches founders based outside Australia off guard when they assume the online process applies to them too.
The $75,000 GST threshold is a legal trigger, not a suggestion
GST registration becomes mandatory once a business's projected or actual GST turnover reaches $75,000 in a 12-month period — the ATO expects the business to register within 21 days of crossing that threshold, not at the next convenient moment. Taxi and ride-share operators must register from day one regardless of turnover. Below $75,000, registration is voluntary; we flag the threshold and the opt-in timing, and your registered tax or BAS agent is who decides whether early voluntary registration makes sense for the business's specific input-tax-credit position.
PAYG withholding triggers on the first payment to an employee, not on incorporation
PAYG withholding registration becomes mandatory the moment the business makes its first payment to an employee, or to a contractor under a voluntary agreement to withhold — it has nothing to do with revenue or turnover. Registering it in the same ABN application, before the first hire, avoids a scramble at first payroll; registering it after the fact through ATO Online Services for Business still works but adds a step the founder has to remember to do.
Mechanical registration is unregulated; the advice sitting next to it is not
Preparing and lodging an ABN, ACN or GST/PAYG-W registration is unregulated administrative work — anyone can prepare and submit that paperwork, no licence required. But any advice on GST treatment, PAYG withholding obligations, or tax positions, or charging a fee to prepare a BAS, requires registration as a tax agent or BAS agent under the Tax Agent Services Act 2009 (TASA), enforced by the Tax Practitioners Board (TPB). Unregistered advice-for-fee carries civil penalties up to $82,500 per offence for an individual (250 penalty units) and $412,500 (1,250 penalty units) for a body corporate. CapEasy, India-based and not TPB-registered, prepares the mechanical registration file; anything that becomes advice goes to your registered agent.
What your registered BAS or tax agent receives from us
- A registration sequence mapped to the entity's actual plans — which of the five (ABN, TFN, GST, PAYG-W, director ID) apply, and in what order, before anything is lodged.
- The director ID application filed for each proposed director ahead of their appointment date, using myID for residents or the NAT 75433 paper form with certified ID for non-residents.
- The ABN application prepared with entity details, associates and business activity description, with the GST and PAYG-W opt-in decision flagged for confirmation before submission.
- GST registration lodged — either bundled into the ABN application or added afterward via ATO Online Services for Business — with the effective date confirmed.
- PAYG withholding registration lodged ahead of the first payroll run or the first contractor payment under a voluntary agreement.
- Confirmation that the ABN is active and correctly listed on ABN Lookup (abr.business.gov.au), the public register a supplier or bank will check.
