You finish a $5,000 consulting project on 28 June. You send the invoice that afternoon. Your client pays on 14 July.
So which financial year does that $5,000 belong to? Which quarter does it land in for your BAS? And does your business look profitable in June, or does it look like you worked for free?
The answer depends entirely on whether you’re using cash or accrual accounting. Understanding how accounting in Australia handles income, expenses, GST and reporting can make a significant difference here. The choice affects more than your books. It shapes your GST timing, your reported profit, your tax position, and how clearly you can see where your business actually stands.
By the end of this piece, you’ll understand how each method works in an Australian context, where the real decision points sit, and how to figure out which approach fits your business rather than just picking one because someone else does.
Cash accounting records income when payment hits your bank account and expenses when money leaves it. Accrual accounting records income when you earn it (typically when you invoice) and expenses when you incur them, regardless of when cash moves. Most Australian businesses with aggregated turnover under $10 million can choose cash accounting for GST purposes, according to the Australian Taxation Office. The right method depends on your transaction complexity, payment cycles, and what you need your financial reports to tell you.
Quick comparison: Cash vs Accrual Accounting in Australia
| Factor | Cash accounting | Accrual accounting |
|---|---|---|
| Income recognised | When received | When earned |
| Expenses recognised | When paid | When incurred |
| Day-to-day complexity | Lower | Higher |
| Cash-flow visibility | Direct | Requires separate tracking |
| Debtors and creditors | Not clearly visible | Tracked in real time |
| Performance picture | Reflects cash movement | Reflects economic activity |
| Typical fit | Immediate-payment businesses | Businesses with credit terms or complex operations |
Who this applies to
This guide is for Australian sole traders, freelancers, contractors, and SME owners who are either setting up their accounting for the first time or questioning whether their current method still makes sense. If you’re running a publicly listed company or a large entity with mandatory reporting standards, your framework is already prescribed. You can stop here.
If you’re a business owner staring at your accounting software wondering why your profit report doesn’t match your bank balance, keep reading.
How cash accounting actually works
Cash accounting tracks money when it moves. You record income the day payment arrives in your account. You record an expense the day you pay a bill. Invoices you’ve sent but haven’t been paid for? They don’t exist in your books yet.
This creates a straightforward view of what’s happened with actual cash. A sole trader who does garden maintenance and gets paid on the spot each day has a clean, simple picture. Income in, expenses out, done.
The limitation shows up the moment payment timing gets uneven.
Example: the $2,000 landscaping job
Say you’re a sole trader who completes a $2,000 landscaping job on 25 June. The client pays you on 25 June. Under cash accounting, that $2,000 is June income. Simple. Now change one detail. The client pays on 8 July instead. Under cash accounting, June shows zero income from that job. July shows $2,000. The work hasn’t changed. Your effort hasn’t changed. But your financial picture for June looks completely different.
For businesses where most customers pay immediately (think retail, market stalls, trades paid on completion), this gap rarely matters. For anyone issuing invoices with 14- or 30-day terms, it starts to distort things.
How accrual accounting actually works
Accrual accounting records economic activity when it occurs. You recognise revenue when you’ve earned it and created what the ATO calls a recoverable debt, typically when you invoice for completed work. You recognise expenses when you incur them, even if you haven’t paid the supplier yet.
This means your books show two things cash accounting hides: accounts receivable (money owed to you) and accounts payable (money you owe others). Those two numbers are critical for any business trying to understand its real financial position.
A marketing consultant who invoices $8,000 in June but won’t collect payment until August still sees that $8,000 as June revenue under accrual accounting. The books reflect the work done, not when the bank account moved.
The tradeoff is complexity. Accrual accounting requires tracking open invoices, matching expenses to the period they relate to, and reconciling the gap between what’s been earned and what’s been collected. Financial statements prepared properly use accrual accounting for exactly this reason: it gives a more complete picture of profitability.
One transaction, two different stories
Here’s where the timing distinction becomes concrete.
A consultant completes a $5,000 project in June and invoices the client. The client pays in July.
Under cash accounting
June records $0 from this project. July records $5,000 when the bank transfer clears. If this consultant is trying to understand June’s profitability, cash accounting says June was a dead month. It wasn’t.
Under accrual accounting
June records $5,000 as revenue because the work was completed and invoiced. An accounts receivable entry tracks the outstanding payment. When the client pays in July, that receivable is settled. June’s books accurately reflect the economic activity.
Neither method is wrong. They answer different questions. Cash accounting answers “what happened in my bank account?” Accrual accounting answers “what did my business actually do?”
The problem most business owners hit is expecting one method to answer both questions. It can’t.
The GST question (and why it’s separate)
This is where most guides blur two distinct decisions, and it causes real confusion.
Your GST accounting basis for BAS reporting is a separate choice from your general financial accounting method. The ATO allows businesses with aggregated turnover under $10 million to account for GST on a cash basis. Businesses above that threshold, or those that choose to, use the non-cash (accrual) method for GST.
On cash-basis GST, you report GST collected when your customer pays you, and claim GST credits when you pay your suppliers. On non-cash GST, you report GST when you issue the invoice and claim credits when you receive a supplier’s invoice, regardless of payment timing.
This matters for BAS. A business on cash-basis GST that issues a $11,000 invoice (including $1,000 GST) in March but doesn’t get paid until April won’t include that $1,000 in the March quarter BAS. Under non-cash GST, it goes into the March quarter.
The critical point
You can run your management accounts on accrual while reporting GST on a cash basis. Many Australian small businesses do exactly this. Your GST guide for Australian small business owners covers the obligations in more detail.
I still see business owners assume that choosing “cash” in their software means everything, GST, income tax, and management reports, runs on cash. That assumption leads to BAS figures that don’t match expectations and year-end conversations with accountants that take twice as long as they should.
Cash flow vs accounting method: the misconception that costs money
Cash accounting does not equal cash-flow management. And accrual accounting does not mean you have the cash to cover your bills.
A business using accrual accounting might show $40,000 profit for the quarter. But if $25,000 of that revenue sits in unpaid invoices, the bank account tells a very different story. That business might struggle to pay its own suppliers next week.
Flip it around. A business on cash accounting might show strong cash receipts because three clients happened to pay early. The underlying profitability, once you account for costs that haven’t been billed yet, could be weak.
Profit and cash are related but not the same measurement. Confusing them is one of the most common mistakes I see in small businesses, and neither accounting method protects you from it on its own. You need to understand how GST calculations affect your actual cash position alongside whichever method you choose.
The problems that don’t make it into textbooks
| Problem | What’s actually going on | The fix practitioners use |
|---|---|---|
| Profit looks nothing like the bank balance | Cash basis hides unpaid invoices and outstanding bills | Run a monthly debtors and creditors aged report alongside your P&L |
| BAS figures surprise you every quarter | GST basis and management reporting basis are set differently in the software | Document which reports run on which basis and check settings before lodging |
| Revenue spikes or vanishes around 30 June | Invoices cluster near EOFY and the method determines which year they land in | Run a cut-off review for invoices issued and bills received in the last two weeks of June |
| Taxable income feels too high despite tight cash | Accrual method recognises earned income before collection | Forecast debtor collection timing and maintain a working capital buffer |
The biggest source of error isn’t the method. It’s inconsistent bookkeeping. Recording some invoices when issued and others when paid, mixing approaches within the same file, or not reconciling regularly. That creates a set of books that’s neither cash nor accrual. It’s just wrong.
Where practitioners disagree
There’s a live debate about whether sole traders and micro-businesses should bother with accrual accounting at all. One camp (common among bookkeepers working with trades and service providers) argues that cash accounting is simpler, reduces errors, and aligns with how these businesses think about money. The other camp (more common among accountants advising growing businesses) pushes accrual from day one because switching later creates transition headaches and gaps in historical reporting. I land on the side of matching the method to the business’s actual complexity rather than its size, because a sole trader with 30-day payment terms and $300,000 in annual invoicing has different needs than one collecting cash on the spot.
Choosing your method
Cash accounting tends to work well when customers pay at the point of sale, you carry minimal outstanding invoices, your operations are straightforward, and bookkeeping simplicity genuinely matters to your workflow.
Accrual accounting tends to suit businesses that invoice with payment terms, carry significant receivables or payables, need clearer profitability reporting, are growing or seeking finance, or operate in industries where matching revenue to the period it was earned matters for decision-making.
| Business type | Typical situation | Method worth considering | Why |
|---|---|---|---|
| Sole trader (trades) | Paid on completion, simple expenses | Cash | Matches natural cash flow, minimal admin |
| Freelancer or consultant | Invoices with 14-30 day terms | Accrual | Tracks what’s been earned vs collected |
| Retail (POS) | Immediate payment, stock on hand | Cash for simplicity, accrual if managing inventory | Stock valuation benefits from accrual |
| Professional services firm | Monthly retainers, project billing | Accrual | Revenue timing and WIP tracking matter |
| Contractor | Progress claims, staged payments | Accrual | Matching income to project stages |
| Growing SME | Multiple revenue streams, credit terms | Accrual | Lenders and investors expect accrual-based financials |
These are starting points. The appropriate method depends on your specific circumstances and applicable ATO requirements.
Can you switch methods?
Yes, but it’s not as clean as changing a setting in your software. Switching from cash to accrual (or the reverse) means reclassifying historical transactions, handling the overlap period where income or expenses could be double-counted or missed entirely, and potentially adjusting your GST reporting basis with the ATO. Professional advice before making this change is worth every dollar. Getting the transition wrong can create tax issues that take far longer to untangle than the switch itself.
Your accounting shouldn’t make the decision harder
If tracking receivables, payables, and GST across both methods sounds like a headache, ProfitBooks handles invoicing, expense tracking, and financial reporting for Australian small businesses without requiring an accounting degree to get started.
Decision checklist
Ask yourself these nine questions:
If your answers cluster around immediate payment and simplicity, cash accounting likely fits. If they point toward credit terms, growth, and reporting depth, accrual is probably the stronger choice.
Frequently asked questions
Can a sole trader use cash accounting in Australia?
Yes. Most sole traders with aggregated turnover under $10 million can choose cash accounting for GST purposes, according to the ATO. For income tax, the appropriate method depends on what best reflects the business’s income. Many sole traders with simple, immediate-payment operations use cash accounting without issue.
Does cash vs accrual affect my GST reporting?
It directly affects when you report GST on your BAS. Cash-basis GST means you report GST when payment is received or made. Non-cash GST means you report it when invoices are issued or received. The GST calculator can help you work through the numbers.
Does cash accounting mean I only pay tax when customers pay me?
For GST on a cash basis, broadly yes: you account for GST when payment occurs. For income tax, the position is more nuanced. The ATO assesses whether cash or accrual is the most appropriate basis for recognising your assessable income, and that depends on your business circumstances.
Which method is better for businesses that invoice customers?
Accrual accounting generally gives a clearer picture when you’re issuing invoices with payment terms. It tracks what you’ve earned and what’s outstanding, so you’re not flying blind on receivables. Cash accounting can hide the gap between work done and money collected, which gets risky as invoice volumes grow.
Does my accounting software support both methods?
Most modern GST accounting software lets you run reports on both bases, meaning you can manage your books on accrual while generating cash-basis reports for GST. Check your software settings before assuming which view you’re looking at.
The next problem you’ll hit after choosing a method is keeping your books consistent with that choice, especially around EOFY. That’s where a monthly reconciliation habit matters more than which method you picked.
Keep your books consistent, whichever method you choose
ProfitBooks tracks receivables, payables, and GST on both bases — so your BAS lines up and EOFY isn’t a scramble.
