SMSF audit requirements: what trustees need to know

It's a legal requirement under the Superannuation Industry (Supervision) Act 1993 — not an optional extra — and it applies even in years when your fund made no contributions or payments. Here's what that means for you as a trustee, in plain English.

This is general information to help you understand the rules. The audit itself, and any decision about your fund, should involve an ASIC-approved SMSF auditor and your registered tax agent. For the official trustee guidance, see the ATO's page on your SMSF auditor.

Does every SMSF need to be audited?

Yes. Every SMSF must be audited each financial year, regardless of the fund's size, its investments, or how much activity it had. The obligation sits in section 35C of the Superannuation Industry (Supervision) Act 1993 (the SIS Act), and there is no "small fund" or "no activity" exemption.

A common misconception is that a quiet year — no new contributions, no pensions paid, no trades — means you can skip the audit. It doesn't. The annual audit is mandatory and is not risk-based, so a fund that simply held the same shares and ETFs all year still needs a full audit before it can lodge its SMSF annual return. A government proposal some years ago to move to a three-yearly audit cycle was abandoned, so the annual requirement remains.

Who can audit your SMSF?

Your SMSF can only be audited by an approved SMSF auditor who is registered with the Australian Securities and Investments Commission (ASIC) and holds a valid SMSF auditor number (SAN). An approved SMSF auditor is a specialist who has met ASIC's education, experience and competency standards specifically for auditing super funds — not every accountant qualifies.

That SAN matters in practice: it must be recorded on your fund's annual return, and if the person who signs off the audit isn't ASIC-registered, the audit isn't valid. You can check an auditor's registration through ASIC before you engage them.

Independence requirements

An SMSF auditor must be genuinely independent of your fund and its trustees. Under the auditing profession's code of ethics (APES 110), an auditor generally can't audit a fund where they have a financial interest, or a close personal or business relationship with the members or trustees.

The most common trap is using the same firm that prepared your fund's accounts to also sign off the audit — that can create an independence breach that invalidates the audit and draws regulator attention to both the trustee and the auditor. In short: the person who prepares the numbers usually can't be the person who audits them. ASIC's Moneysmart has a helpful plain-English overview of running an SMSF if you want broader context on your obligations.

What does an SMSF audit involve?

An SMSF audit has two parts: a financial audit (Part A) and a compliance audit (Part B). Together they confirm both that your fund's numbers are accurate and that you've run the fund within super law.

The financial audit checks that your fund's financial statements fairly and accurately reflect its position, in line with Australian Auditing Standards. The auditor verifies transactions against evidence such as bank statements, contract notes, dividend and rental statements, and invoices. The compliance audit then assesses whether you've met your obligations under the SIS Act and regulations — things like the sole purpose test, contribution and payment rules, and asset restrictions.

What auditors check on your investments

For a share- and ETF-focused SMSF, auditors pay close attention to a handful of investment-side items: that the fund legally owns its assets (held in the fund's name, not a member's personal name), that assets are recorded at market value at 30 June, that the fund hasn't breached the in-house asset rules, and that everything supports the sole purpose test — running the fund to provide retirement benefits.

Ownership evidence is where clean records really help. For Australian-listed shares and ETFs, CHESS-sponsored holdings give the fund direct legal ownership recorded against its own Holder Identification Number — and a HIN is strong, straightforward proof of who owns the shares, which makes an auditor's job faster. Property and borrowings tend to attract the most scrutiny and documentation, so if your fund is using an SMSF to invest in property, expect the auditor to ask for more evidence than a portfolio of listed shares would require.

Read more: Holding SMSF assets in your own name via CHESS sponsorship

Key SMSF audit deadlines and timing

The single date that catches trustees out: you must appoint your approved SMSF auditor no later than 45 days before your SMSF annual return is due. The audit must then be completed before you lodge that return. Two more timing rules follow — you must give the auditor any document they request within 14 days, and the auditor must give you the independent auditor's report within 28 days of receiving everything they need.

Because your auditor can't start until your accounts are prepared and your assets valued, the practical deadline is earlier than the formal one. Here's how the timeline works for a fund whose return is due on 31 October (dates vary — always confirm your fund's ATO-issued due date).

Source: ATO auditor-appointment and lodgement rules, as at September 2026. Due dates differ for funds lodging through a registered tax agent — check your fund's specific date.

How much does an SMSF audit cost?

There's no fixed audit fee, but the ATO's data puts the median SMSF audit fee at around $550, with just over half of all funds paying between $500 and $999 (ATO statistics, 2023–24, as at September 2026). What you actually pay depends on the complexity of your fund and the quality of your records.

Simple funds with clean, well-organised records — a straightforward portfolio of listed shares and ETFs, tidy contract notes, clear ownership — sit at the lower end. Funds with property, borrowing arrangements, unusual assets or messy paperwork cost more, because audit time drives the fee. In other words, good record-keeping through the year isn't just good governance; it can genuinely lower your audit bill.

What happens if your SMSF isn't audited?

Skipping or delaying the audit has real consequences, because your SMSF annual return can't be lodged until the audit is complete. Miss the timing and you risk late-lodgement penalties from the ATO — and repeated or serious lodgement problems can escalate.

If the auditor identifies a significant or repeated breach of super law, they are legally required to lodge an Auditor Contravention Report (ACR) with the ATO within 28 days of completing the audit — even if you've already fixed the problem. An ACR isn't an automatic penalty; the ATO's stated approach is to work with trustees to rectify issues, particularly first-time or inadvertent ones. But in the most serious cases the ATO can make the fund non-complying, which can see its taxable income taxed at 45% — a severe outcome that puts your retirement savings at risk. Trying to conceal issues from your auditor makes things worse, not better; transparency is always the right approach.

How to prepare for your SMSF audit

The smoothest audits come down to good habits during the year, not a scramble in September. Here's a practical trustee checklist to get audit-ready:

1. Keep records organised as you go. Retain bank statements, contract notes, dividend statements and invoices. The SIS Act generally requires accounting records to be kept for five years, and trustee meeting minutes and declarations for ten years.

2. Value assets at market value at 30 June. Listed shares and ETFs are straightforward; property and unlisted assets need supporting evidence such as recent comparable sales.

3. Prepare (or have your accountant prepare) the financial statements before the auditor starts — they can't begin without them.

4. Appoint an independent, ASIC-approved auditor early — at least 45 days before your lodgement date, and ideally sooner.

5. Respond to auditor requests within 14 days to avoid delays, a qualified report, or a contravention report.

This is where where your shares are held and reported makes a difference. Holding your fund's Australian shares and ETFs in a CHESS-sponsored account gives you clean ownership records and consolidated statements, and data feeds can send transaction and holding data straight to your accountant or administrator — cutting the back-and-forth at audit time.

Learn more: SMSF reporting and data feeds for your accountant

Ready to run your SMSF investments with audit-friendly records?

A Selfwealth SMSF trading account gives your fund flat $9.50 brokerage, CHESS-sponsored ownership on ASX and TMX Australia Exchange (formerly Cboe Australia) listed shares and ETFs, and reporting built with accountants and administrators in mind — so your annual audit is one less thing to stress about. Open an SMSF trading account with Selfwealth.

(Selfwealth is not an SMSF auditor or tax agent. Appoint an independent ASIC-approved SMSF auditor and speak with a registered tax agent for your fund's audit and tax obligations.)

Frequently asked questions

Do SMSFs need to be audited every year? Yes. Under section 35C of the SIS Act, every SMSF must be audited each financial year by an approved SMSF auditor before its annual return is lodged — even in years with no contributions, pensions or trades.

Can I audit my own SMSF? No. An SMSF must be audited by an independent, ASIC-approved auditor. You can't audit your own fund, and the auditor generally can't be someone who prepared the fund's accounts or has a close financial or personal relationship with the members or trustees.

How much does an SMSF audit cost in Australia? The ATO's data shows a median SMSF audit fee of around $550, with just over half of funds paying $500–$999 (2023–24 data, as at September 2026). Simple funds with clean records cost less; property, borrowings and messy paperwork cost more.

When do I need to appoint my SMSF auditor? No later than 45 days before your SMSF annual return is due. The audit must be completed before you lodge, so appointing early — after your accounts are prepared and assets valued — gives everyone time to resolve any issues.

Who appoints the SMSF auditor — me or my accountant? As trustee, you are responsible for appointing the auditor each year, though your accountant or administrator often coordinates it. You must give the auditor any documents they request within 14 days, and they must provide the independent auditor's report within 28 days of receiving everything they need.

What happens if my SMSF fails its audit? The auditor may lodge an Auditor Contravention Report with the ATO within 28 days for significant or repeated breaches. This isn't an automatic penalty, but unresolved or serious breaches can lead to penalties or the fund being made non-complying, which can see its income taxed at 45%. Rectify contraventions as soon as possible and be transparent with your auditor.