Who must apply for a Tax File Number for new entities and partnerships?
The applicability test for Apply for a Tax File Number for new entities and partnerships (ATO), computed across 35 industries, 9 business structures and 6 size bands.
Short answer: Some businesses
Applies when the business has not sole trader.
What the obligation is
Companies, trusts and partnerships need a TFN to file tax returns and claim TFN exemptions.
Non-individual entities must apply for a TFN via the ABN application process. Without a TFN, the entity cannot lodge tax returns electronically and may face PAYG withholding on interest income.
The applicability test
Applies when the business has not sole trader.
How the regulator frames it: Companies, trusts, partnerships, super funds.
What triggers it: Entity formation.
Jurisdiction: Commonwealth law, so the test is the same in every state and territory.
Which industries are in or out
Outcome across the 35 industries Rules Mate maps (35 of 35: depends on size or structure).
The answer is the same in every industry: depends on size or structure. Industry does not change who must comply.
Business structure and size
| Structure | Answer across all industries, any size | Engine's reason (real estate agents, 6–19 employees) |
|---|---|---|
| Sole trader | No | Requires not sole trader |
| Partnership | Yes | Separate entity (company, trust, partnership or fund) |
| Trust | Yes | Separate entity (company, trust, partnership or fund) |
| Pty Ltd company | Yes | Separate entity (company, trust, partnership or fund) |
| Public company | Yes | Separate entity (company, trust, partnership or fund) |
| Not-for-profit (unregistered) | Yes | Separate entity (company, trust, partnership or fund) |
| Registered charity | Yes | Separate entity (company, trust, partnership or fund) |
| Super fund | Yes | Separate entity (company, trust, partnership or fund) |
| Foreign company | Yes | Separate entity (company, trust, partnership or fund) |
Size does not change the answer across all industries: at every size band the answer is "depends on size or structure".
Worked examples
Each line is one run of the Rules Mate applicability engine for a single business profile, with the reason the engine gives:
- Pty Ltd company in real estate agents with 6–19 employees, turnover $1M–$3M: applies. Separate entity (company, trust, partnership or fund)
- Sole trader in real estate agents with 6–19 employees, turnover $1M–$3M: does not apply. Requires not sole trader.
What you must do, and when
- When due
- Before first income tax return.
- Frequency
- One-off
- Evidence to keep
- TFN issued by ATO.
- Status
- Current
- Priority
- High
Penalty for not complying
Maximum penalty: Admin friction + 47% withholding on interest payments without TFN.
Audit or assurance level
Rules Mate has not yet classified the audit or assurance level for this obligation. Any audit, review or certification requirement is set by the regulator source listed below.
Where it sits in the corpus
Rules Mate tracks 37 published obligations tagged "tax", 6 of them rated critical. For a professional services Pty Ltd company with 6–19 employees operating in every state, 7 of those apply outright. This obligation is rated high priority, and is a one-off obligation.
Regulator, legislation and tools
Regulated by Australian Taxation Office.
ATO: Federal tax administrator covering income tax, GST, PAYG, FBT, superannuation guarantee, STP, and self-managed super funds. Also administers the Director ID regime via ABRS.
ITAA 1936: Older income tax Act, gradually being replaced by ITAA 1997 but still contains many key provisions: trust taxation (Pt III Div 6), general anti-avoidance (Pt IVA), debt deductions for interest (Pt IVA), Controlled Foreign Company rules (Pt X).
Free tools that help with this obligation:
Questions
- Who must apply for a Tax File Number for new entities and partnerships?
- Applies when the business has not sole trader.
- Do sole traders need to apply for a Tax File Number for new entities and partnerships?
- No. Across every industry and every size band, the engine's answer for a sole trader is: no.
- Do businesses with 1–5 employees need to apply for a Tax File Number for new entities and partnerships?
- Depends on size or structure (1–5 employees, turnover $100K–$1M).
- When is "Apply for a Tax File Number for new entities and partnerships" due?
- Before first income tax return.
Related
Sources
Computed by the Rules Mate applicability engine from the published obligation corpus; facts last checked 3 October 2026. Rules Mate is not a law firm and this is general information, not legal advice. Confirm your position with the regulator source or a qualified adviser before acting.