BAS & GST Prep Helper
Enter your sales, GST-free sales and purchases for the period. We calculate your exact GST on sales, GST credits and net GST owing or refundable (using the ATO's 1/11 method), then our AI explains what each BAS label means, whether you pay or get a refund, and gives you a step-by-step lodgement checklist with the due dates for your period. General information to help you prepare — not tax advice; confirm your figures before lodging.
G1, 1A and 1B are three boxes on a form that never explain themselves. The figures they want are sitting in your bank feed somewhere, but the labels give no hint about which figures, or how you get from one to the other.
The BAS & GST Prep Helper is A$29 one-off. Hand it your figures for the period and it works out your GST on sales, your GST credits and your net GST position, then returns a plain-English report telling you whether you owe the ATO or the ATO owes you, with a checklist for lodging. It is general information to help you prepare, not tax advice.
It sits between guessing and booking an appointment. About five minutes, a report on your order page, and a Markdown download you can print to PDF or paste into Word.
G1, 1A and 1B in plain English
Your G1, 1A and 1B figures arrive already calculated, each one followed by an explanation of what that label is actually asking for and which of your inputs produced the number now sitting in it. The report then states your net position: GST owing to the ATO, or a refund heading back to you.
If you have previously copied totals across from a bookkeeping report and hoped they landed in the right boxes, this is the part that tells you what you are looking at.
The arithmetic is calculated, not generated
The numbers are worked out deterministically using the ATO's 1/11 method — the same calculation every time, not something a language model estimates. Only once those figures are fixed does the AI layer write the explanation around them: what each label represents, how your net position was reached, what to do next.
Which also means every figure in the report descends from what you typed. There is no link to your bank, your accounting software or the ATO, and nothing is cross-checked against your records. A wrong total going in is a wrong total coming out.
Before you lodge: the sequence, the dates, the usual slip-ups
Alongside the figures sits a step-by-step lodgement checklist for the period you entered, plus due-date guidance for your cycle, whether you report monthly, quarterly or annually. It runs in order, so you can work down it rather than tabbing between ATO help pages trying to reconstruct the sequence. A list of the common BAS and GST mistakes worth checking sits with it — the kind that turn a five-minute job into an amendment three months later.
Your accounting basis is one of the details the intake collects, and it matters, because cash and accruals pull different transactions into the same period. Enter the basis you actually report on. And where a period contains something unusual — mixed supplies, imports, property under the margin scheme, adjustments carried forward — that sits outside what a short set of inputs can properly handle. Have a registered BAS agent or accountant look at it, and confirm your figures before the form goes in.
If a figure turns out to be wrong
Two free AI revisions are included at this price, so a corrected input or an updated total can be put through and the report regenerated without a second purchase. Lodgement itself stays with you, through ATO online services or your registered agent.
What you get
- Your exact G1, 1A and 1B figures (calculated) with each label explained
- Net GST owing or refundable — whether you pay the ATO or get money back
- A step-by-step BAS lodgement checklist for your period
- Due-date guidance for your monthly / quarterly / annual cycle
- Common BAS & GST mistakes to avoid before you lodge
- 2 free AI revisions included
Turnaround: ~5 minutes. Delivery: On-page report + Markdown download (print to PDF / paste to Word).
Frequently asked questions
Does this lodge my BAS with the ATO?
No. It prepares and explains your figures, and hands you a step-by-step lodgement checklist with due-date guidance for your cycle. Making the lodgement is still yours to do, through ATO online services or your registered tax or BAS agent.
Can it pull the figures out of my accounting software or bank feed?
No — nothing is fetched, synced or scanned. You enter your reporting period, your sales and GST-free sales, your total purchases including GST and your accounting basis, and the calculation runs on those figures alone.
Some of my sales are GST-free — does that get captured?
Yes. GST-free sales are collected separately from your total sales, so they are treated as their own figure rather than folded in with everything else. If your mix is complicated — partly taxable, partly input-taxed or GST-free — have a registered BAS agent confirm the split before you lodge.
For A$29, am I getting tax advice?
No. At this price it is a preparation aid: the arithmetic is done for you and the labels are explained so you know what you are lodging. It is general information, not tax advice, and anything unusual in the period should be reviewed by a qualified professional first.