How this usually works
Effective ato default assessment help follows a fast, structured workflow focused on lodgment and risk control.
- Triage and breathing space
- Confirm what the ATO sent (Default Assessment Warning vs Default Assessment Notice) and the period(s) affected.
- Contact the ATO (or have a registered tax/BAS agent do so) to advise you’re preparing lodgments and request a short hold on recovery.
- Reconstruct records
- Collect bank statements, sales reports, invoices, payroll/STP and super records.
- Rebuild the BAS or income tax position using your accounting file or bank data.
- Lodge to replace the estimate
- Submit the overdue return(s)/BAS. In most cases, the ATO reassesses using your lodged figures.
- If estimates span multiple periods, lodge in order to reduce compounding errors.
- Penalties, interest and payment plan
- Request remission of Failure To Lodge (FTL) penalties and some interest where appropriate.
- Set up an affordable payment plan if you cannot pay in full.
- Objection, if required
- If you disagree and can’t lodge in time, file an objection by the deadline with evidence.
Australian context to keep in view
- Default Assessment Warning (DAW) letters come first in many cases. If you still don’t lodge, a Default Assessment Notice can be issued.
- Lodging valid returns usually replaces the default assessment. Keep evidence supporting any reconstructed figures.
- Objection time limits on the notice are strict (often 60 days). Ask for an extension if you’re late and explain why.
- Penalties (FTL) and interest (GIC) can accrue. Remission requests work best when you communicate early and show action.
- Companies with unpaid PAYG(W), GST or super can face Director Penalty Notice risk if debt and lodgments remain unresolved.
- Use the right registration: a registered tax agent for income tax returns, and a registered BAS agent for BAS/GST and payroll obligations.
What to compare before you commit
Scope
Confirm your provider will triage ATO letters, reconstruct records, lodge all overdue returns/BAS, manage ATO calls, and request penalty/interest remission where appropriate.
Software fit
Look for confident use of your tools (Xero, MYOB, QuickBooks, payroll/STP) and a clear plan for bank feeds, invoice capture and evidence storage.
Turnaround and communication
Ask for a rapid start, documented timelines, and who will speak to the ATO on your behalf. Clarify how urgent items are escalated.
Commercial fit
Compare fixed-fee vs hourly for catch-up work, expected out-of-scope items, and support after lodgment (payment plans, objections, and reviews).
Best next steps
Write down your immediate objective (e.g., “replace the estimate by lodging this quarter’s BAS and last year’s tax return, then set a payment plan”). Then shortlist providers who do this weekly and can explain each step clearly.
Gather the essentials before your first call:
- ATO letter type (Warning or Notice), reference number and due dates.
- Periods outstanding and whether any returns were partially prepared.
- Bank statements, sales and expense records, payroll/STP and super details.
- Whether you can pay in full or prefer a payment plan after lodgment.
If you’re comparing pathways, these pages can help: ATO Debt Help, ATO Objection Support, ATO Review Help, and Tax Accountant.
Frequently asked questions
What is an ATO default assessment?
It’s an ATO estimate raised because required lodgments weren’t received. The figure can be higher than your true liability. Lodging the overdue return(s) will usually replace the estimate.
What’s the difference between a Default Assessment Warning and a Notice?
A Warning alerts you to overdue lodgments and the risk of an estimated assessment. A Notice is the assessment itself. Take action quickly at either stage to reduce penalties and interest.
How do I fix a default assessment fast?
Reconstruct records, lodge overdue returns/BAS, and ask the ATO for time to prepare and to pause recovery. After lodgment, request penalty/interest remission where appropriate and set up a payment plan if needed.
How long do I have to object?
The deadline is on your notice (often 60 days). If that has passed, include a request for an extension of time with reasons. Where possible, lodgment of correct returns can resolve the issue without a formal objection.
Will the ATO waive penalties and interest?
Remission is possible depending on your history and reasons for delay. Demonstrating prompt action, good records and future compliance improves outcomes.
Can the ATO take recovery action while I prepare?
Yes, recovery can continue after due dates. Early contact (directly or via your agent) can secure short holds and set expectations while you prepare lodgments.
Does lodging automatically replace the estimate?
In most cases, yes. A valid lodgment triggers reassessment based on your figures. Keep supporting documentation for any reconstructed amounts.
Who should I engage for help?
Use a registered tax agent for income tax returns and a registered BAS agent for BAS, GST and payroll obligations. Many practices cover both. You can compare options via our Find an Accountant page or request help now.