A mid-size Australian accounting firm processing 400 individual tax returns per year spends roughly 1,600–2,400 staff hours on preparation alone — before partner review, client queries or ATO correspondence. At $65–$90 per onshore staff hour, that's $104,000–$216,000 per year in production cost. The same preparation outsourced offshore costs $45–$95 per return — $18,000–$38,000 for 400 returns. The math is why tax return outsourcing has become standard practice for the mid-market.
What Can Be Outsourced — and What Cannot
✓ Offshore Accountant Handles
- Individual return (ITR) population in tax software
- Company, trust and partnership return preparation
- ATO pre-fill data reconciliation against client documents
- Rental property schedules — income, deductions, depreciation
- Capital gains schedules — acquisition, disposal, CGT method selection
- Business income schedules — sole trader P&L coding and schedule completion
- PAYG payment summary reconciliation
- Deduction schedule preparation and classification
- Query sheets for missing information or discrepancies
✗ Must Remain Onshore
- Tax return lodgement with the ATO (requires registered tax agent)
- Tax advice to clients — structuring, planning, strategy
- Client-facing communication and query resolution
- Work product sign-off and approval before client delivery
- ATO correspondence management
- Objections and private binding ruling applications
- Judgement calls on deductibility of unusual or complex items
Scope and Cost by Return Type
| Return Type | Offshore Scope | Cost / Return | Turnaround |
|---|---|---|---|
| Individual — Standard PAYG income, standard deductions, no rental or CGT |
Pre-fill reconciliation, income coding, deduction schedule | $45–$70 | 2–4 business days |
| Individual — Rental Property 1–3 properties, standard deductions, depreciation schedule |
Above + rental schedules, depreciation, interest allocation | $65–$110 | 3–5 business days |
| Individual — Complex Multiple properties, CGT events, business income, foreign income |
Full schedule preparation across all income types | $90–$160 | 5–8 business days |
| Company Return (CTR) Standard trading company, simple structure |
Financial statement coding, PAYG/FBT reconciliation, Div7A check | $120–$200 | 4–7 business days |
| Trust Return Discretionary or unit trust, distribution resolution |
Income coding, distribution schedule, trust tax return population | $130–$250 | 5–8 business days |
| Partnership Return Trading partnership, partner profit/loss allocation |
P&L preparation, partner allocation schedule | $110–$200 | 4–7 business days |
How the Workflow Works
Client data package assembled by Australian firm
The Australian firm (or client directly, via client portal) uploads all source documents — PAYG summaries, bank statements, rental statements, broker reports, receipts. ATO pre-fill is downloaded from the firm's tax software.
Offshore accountant prepares the return
The dedicated offshore tax accountant populates the return in the firm's tax software, reconciles pre-fill against client documents, prepares all schedules and flags any discrepancies or missing items in a structured query sheet.
Query resolution
The Australian firm reviews the query sheet and obtains missing information from the client. The offshore accountant finalises the return once all queries are resolved — not before.
Australian partner or manager review
The completed return is reviewed by the Australian-registered tax agent. The review focuses on tax position reasonableness, deduction classification and any items the offshore accountant has flagged for judgement. The registered agent approves the return.
Client delivery and lodgement
The return is presented to the client for signature approval. The registered tax agent lodges via the ATO portal. The cycle is complete.
ATO Pre-Fill Data — Reconciliation Is Critical
ATO pre-fill data is available in most tax software platforms from August–September after financial year end. The offshore accountant reconciles pre-fill data against client-provided documents before populating the return. Common pre-fill discrepancies that require human reconciliation:
- Employer payment summaries — pre-fill amounts from employer STP data may differ from the client's payslip summaries due to timing differences or corrections
- Bank interest — pre-fill may include interest from accounts the client hasn't disclosed, or miss accounts not reporting to the ATO
- Dividend statements — DRP (dividend reinvestment plan) amounts often require manual calculation not in pre-fill
- Government payments — Centrelink and Medicare payments appear in pre-fill; clients frequently forget to disclose them separately
The offshore accountant documents every pre-fill discrepancy in the query sheet — never overrides pre-fill without a supporting document.
TPB Compliance Position
The Tax Practitioners Board's requirements for offshore tax return outsourcing are identical to those for SMSF outsourcing: the registered Australian tax agent remains responsible for all work product, must review all returns before lodgement, and cannot delegate the lodgement itself. The offshore accountant's role is preparation — the registered agent's role is review, approval and lodgement. See the complete offshore accountants for CPA firms guide for the full TPB and Privacy Act compliance framework.
Tax Software Compatibility
Offshore accountants with Australian tax training typically work across all major Australian tax platforms:
- Xero Tax — cloud-based, access via login credentials, most common for modern practices transitioning from desktop
- HandiTax / HandiSoft — desktop-based, accessed via secure remote desktop or Citrix, common in established practices
- MYOB Tax — desktop or cloud, widespread in practices using the full MYOB suite
- CCH iFirm — common in larger practices, cloud-based with document management integration
Confirm platform experience before engagement — an offshore accountant relearning a new platform is significantly slower than one already proficient. See the outsourcing engagement models page for how the onboarding and platform setup phase is structured.
Cost per Return — 2026 Benchmarks
For a 400-return practice: Offshore preparation at an average $75 per return = $30,000 per year. Equivalent onshore staff time at $75/hour × 5 hours per return average = $150,000 per year. The $120,000 difference can fund two additional client-facing resources, a partner's salary reduction, or be retained as margin improvement. Most firms using offshore tax return preparation report 60–70% cost savings per return compared to their previous onshore preparation cost.
Turnaround Benchmarks
Standard turnarounds above assume all client data is provided upfront and complete. The most common cause of turnaround blowout is incomplete data packages — missing rental statements, undisclosed bank accounts or late PAYG summaries. Structuring the client data request as a comprehensive checklist before releasing the file to the offshore team eliminates most delays. See the companion post on how to brief an offshore tax accountant for template structures and data checklists.
Tax Return Preparation. Offshore Cost. Australian Quality Review.
OrtúsPro Global's dedicated offshore tax team prepares individual, company and trust returns in your tax software — reviewed by your partners, lodged by your registered agent, at 60–70% less than onshore preparation cost.
Frequently Asked Questions
What types of tax returns can be outsourced to an offshore accountant?
Individual, company, trust and partnership returns can all be prepared by offshore accountants with Australian tax training. The offshore accountant prepares the return using the firm's tax software; the registered tax agent reviews and lodges. Lodgement cannot be performed offshore as it requires an Australian-registered tax agent.
How much does outsourced tax return preparation cost per return?
Offshore tax return preparation typically costs $45–$95 per individual return, $120–$280 per company or trust return, and $90–$160 per complex individual return with rental properties, CGT events and business income. These costs compare to $150–$400+ per return for onshore staff preparation.
Can an offshore accountant lodge tax returns with the ATO?
No. Tax return lodgement requires a registered tax agent. An offshore accountant can prepare and populate the return in the firm's tax software, but the registered Australian tax agent must review, approve and lodge under the TPB's requirements.
How does tax return outsourcing work with ATO pre-fill data?
The offshore accountant accesses ATO pre-fill data through the firm's tax software and reconciles it against the client's provided documents — flagging any discrepancies in a query sheet for the Australian firm to resolve before the return is finalised.