Review vs audit: what the ATO means
Understanding the ATO’s language helps you respond appropriately:
- ATO review: an initial check to confirm information. Often desk‑based and narrower in scope. Can close quickly if evidence supports your position.
- ATO audit: a formal, deeper examination of one or more tax periods. May include detailed document requests, interviews and data‑matching analysis.
- Desk vs field: desk reviews are handled via correspondence; field audits involve on‑site visits or extended interviews.
- Outcomes: no change, adjustment with/without penalties, payment plan, or escalation (objection/appeal) if you disagree.
First 48 hours: what to do
- Note the deadline and the ATO reference numbers on the letter or portal message.
- Do not make statements or send partial data before reviewing your records.
- Gather core documents: BAS/IAS, tax returns, bank statements, payroll/STP, super, invoices, contracts and software audit trails.
- Check that all lodgements are up to date or prepare a plan to catch up.
- Engage a registered tax or BAS professional to handle contact and submissions.
- Consider voluntary disclosure if you identify an error; this can reduce penalties.
How ATO audit help usually works
Effective support follows a clear, evidence‑first process:
- Triage and risk scan: assess the ATO’s scope, deadlines, likely risks and quick wins.
- Document pack: compile reconciled evidence mapped to each ATO request item.
- Submission and liaison: prepare a structured response and manage communication with the ATO officer.
- Negotiation and remediation: resolve discrepancies, lodge amendments if needed, and request penalty/interest remission.
- Close‑out and prevention: confirm outcome, set up controls and reporting to prevent repeat issues.
Common ATO audit triggers
Data‑matching flags
Differences between your returns and third‑party data (banks, payroll, platforms, property or crypto exchanges).
GST anomalies
Unusual refund patterns, incorrect GST coding, missing export evidence or industry‑atypical ratios.
Payroll and super
STP vs BAS mismatches, SG not paid on time, contractor vs employee issues, or leave records not aligning.
Unreported income
Cash economy signals, platform income not declared, or large variances year‑on‑year without substantiation.
Documents the ATO may request
- BAS/IAS, income tax returns and workpapers for the reviewed periods.
- General ledger, bank statements, sales summaries, expense detail and stock records.
- Payroll reports, STP submissions, superannuation payment evidence and employee records.
- Contracts, invoices, receipts, logbooks, diaries and substantiation for deductions or GST credits.
- Software audit trails, user access logs and reconciliation reports.
Penalties, interest and how to reduce them
- Voluntary disclosure before (or early in) a review can significantly reduce penalties.
- Good records, prompt cooperation and clear explanations support remission requests.
- If a shortfall is found, payment plans are often available to manage cash flow.
Every case is different. Early, well‑structured ATO audit help improves both the technical and commercial outcome.
What to compare before you commit
Scope
Confirm your provider will handle triage, evidence gathering, submissions, ATO liaison, and penalty/interest remission where appropriate.
Software fit
They should be fluent in your accounting stack and able to extract audit‑ready reports and trails.
Turnaround and communication
Ask about response times, who attends calls with the ATO and how updates are delivered.
Commercial fit
Check fee model (fixed/phase‑based vs hourly), evidence standards, and whether they provide preventative controls post‑audit.
Related ATO help, next steps
If your situation overlaps with other areas, these pages can help you narrow the brief:
- ATO Review Help for early‑stage enquiries that haven’t escalated.
- ATO Correspondence Help if you need assistance drafting replies.
- ATO Debt Help to manage payment plans or hardship.
- ATO Default Assessment Help if the ATO issued a default assessment.
- ATO Objection Support when you disagree with an assessment.
You can also explore broader service hubs if your needs extend beyond the audit:
- Tax accountants for ongoing tax advice and compliance.
- BAS agents for GST and activity statement accuracy.
- Bookkeeping services to fix records and prevent future issues.
Frequently asked questions
What is the difference between an ATO review and an ATO audit?
A review is an initial check to confirm information and resolve concerns quickly. An audit is a formal, deeper investigation that examines evidence in detail and may include interviews. Reviews can escalate to audits if concerns remain.
What should I do when I receive an ATO letter or call?
Record the due date and reference numbers, avoid making statements until you’ve reviewed your records, and contact a registered professional to coordinate the response. Provide complete, consistent evidence rather than piecemeal replies.
How far back can the ATO look?
Commonly 2 years for individuals and small businesses and 4 years for other taxpayers. The ATO can review further back in cases of fraud or evasion. Certain topics (GST, PAYG, super) have specific evidentiary rules.
Will I have to stop trading during an audit?
No. Most businesses continue operating while the review or audit proceeds. Your adviser manages contact, so day‑to‑day operations are interrupted as little as possible.
Can penalties and interest be reduced?
Yes, in many cases. Voluntary disclosure, strong records and cooperative engagement support penalty remission. Interest may still apply, but remission can be requested based on circumstances.
What if I disagree with the ATO’s decision?
You can lodge a formal objection with supporting evidence. If needed, matters can be escalated to the Administrative Appeals Tribunal or the courts. Many disputes are resolved earlier via clarification or negotiation.