GST Is Someone Else's Money
A customer pays your invoice.
The money lands in the account.
It looks like a good week.
If your business is registered for GST, part of that payment was never yours.
It's GST. You collected it for the ATO, and you're holding it until it's due, less the GST credits on your own business purchases.
GST is someone else's money. It just sits in your account for a while.
Why GST Catches People Out
GST arrives mixed in with everything else.
Same invoice. Same payment. Same bank account.
So it's easy to treat the whole balance as money you can spend.
Then BAS time comes around, and the money that should have been there has already gone on wages, stock or bills.
That is not a tax problem. It's a cash flow problem that shows up at BAS time.
Where It Goes Wrong
We see the same three problems again and again.
The bank balance tells the wrong story
The account looks healthy. But some of what is in it is GST you owe.
You're reading a number that isn't really yours.
GST gets spent before BAS time
A slow month. A big supplier bill. A bit borrowed from the GST money, just this once.
Then BAS time arrives and the money isn't there.
The books fall behind
When the books are not up to date, nobody knows what the GST bill will be until it lands.
So it's a surprise every time.
Whose Money Is It?
A busy month can blur the lines. It helps to see them side by side.
What is in your account | Whose money is it? |
What you charge for your work or products | Yours, to run the business |
The GST on your sales | The ATO's. You're holding it until it's due |
Money already set aside for your BAS | Spoken for. Not for spending |
Only one line in that table is money you can actually use.
Keeping GST Money Separate
None of this needs a new system. It needs a routine.
1. Treat GST as not yours from day one
When a payment comes in, the GST part is already spoken for.
2. Put it aside as it comes in
A separate account for GST makes it simple. Move it across every time you're paid, or on a set day each week.
3. Keep the books up to date
Current books mean you know roughly what you will owe before BAS time, not after.
4. Check what is set aside against the books
A quick look each month that the GST account lines up with what the books say you owe.
5. Don't borrow from it
If you need the GST money to cover a short week, that is a sign to look at cash flow, not a reason to dip in.
Who Keeps It Straight?
In most Australian businesses like yours, someone in the office already enters the sales and pays the bills.
They are the right person to keep GST money separate. They need a clear routine, and someone checking the numbers with them.
→ We train your office person to set aside GST as it comes in, with a routine they can follow every week.
→ We keep the books right, review them, and look after the BAS lodgements.
→ You see what the business actually has to spend, separate from what it owes.
Because we are already in your numbers for the normal compliance work, the bigger conversation happens as part of it.
What you can safely spend. What is coming up. What you can take out of the business.
It is not a separate project. It comes from keeping the books right.
A Quick Self-Check
Take a minute and answer these honestly.
Question | Yes / No |
Do you know how much of your bank balance is GST you owe? | ☐ |
Is GST moved to a separate account as it comes in? | ☐ |
Was the GST money there in full at every BAS this year? | ☐ |
Are your books up to date enough to estimate your next BAS? | ☐ |
Do you know what you can actually spend this month? | ☐ |
If one or two of these made you pause, you are not doing anything wrong.
GST just arrives looking like your money.
That is fixable.
Final Thought
GST will always pass through your business.
That is part of the job.
What matters is knowing which part of your balance is yours, at any point in the month.
When GST is set aside as it comes in, BAS time stops being a scramble.
You know what you owe. You know what you have to spend.
You'll know what to do next.
Next Step
Not sure how much of your bank balance is really yours? We can look at how your GST is handled today and what it would take to keep it separate.
Book a call with our team.
This article is general information only. It does not take your circumstances into account and is not tax or financial advice.
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