Quick answer
No, you don’t legally need Xero, MYOB or QuickBooks to send invoices in Australia. The ATO cares about what’s on the invoice and that you keep the record for 5 years — not which app made the PDF. For most sole traders, side hustles and small service businesses, a lightweight invoice app (or even a spreadsheet) does the job for $0 instead of $50+/mo.
Why people think they need accounting software
When you Google “how to invoice in Australia”, the top results are mostly Xero and MYOB blog posts — because those companies have huge content budgets. The honest reality:
- Accounting software does payroll, bank feeds, BAS lodgement, GL accounts, inventory, double-entry bookkeeping, multi-currency.
- Invoice software does quotes, invoices, payments, client records, PDFs, email sending.
If you don’t have employees, don’t hold inventory, and your accountant only sees your numbers once a year at tax time — you’re paying for 80% of features you don’t use.
What the ATO actually requires on an invoice
Straight from the ATO: a valid tax invoice (for sales over $82.50 incl. GST) needs:
- Your identity (business name) and ABN
- The words “Tax invoice” (only if you’re GST-registered)
- Date of issue
- Brief description of items sold (with quantity where relevant)
- GST amount, or a statement that “Total price includes GST”
- The buyer’s identity or ABN if the invoice is $1,000 or more
That’s it. None of those fields require accounting software — they fit on half a page.
Your three options without accounting software
Option 1: Word or Google Docs template (free, painful)
You can write the ATO-required fields into a Word doc, export to PDF, attach to an email. Here’s a free template you can copy. Downsides:
- You manually track invoice numbers (and accidentally reuse them)
- You calculate GST by hand every time
- You have no record of which invoices are paid or overdue
- You re-type client details on every job
Option 2: Excel or Google Sheets (free, fragile)
A spreadsheet handles GST formulas and a simple ledger, but you still export to PDF manually and have no automatic email or payment tracking. Fine for 1–2 invoices a month; painful at 10+.
Option 3: A free invoice app (free, fast)
Apps like Free Invoice App are purpose-built for the invoice slice of the workflow — nothing else. You get:
- Auto-numbered invoices (no duplicates)
- GST and totals calculated automatically
- One-click PDF + email send
- Paid/unpaid/overdue status tracking
- 5 years of record-keeping done for you
- $0/mo for the Free plan (7 sends), Pro plan starts well below Xero/MYOB
See the full comparison: best free invoicing software in Australia.
What you lose by skipping accounting software
Honest list of things a dedicated accounting platform does that an invoice app doesn’t:
- Live bank feeds — transactions auto-import from your business bank account
- Payroll & super — STP-compliant payroll for employees
- Direct BAS lodgement — one-click quarterly BAS to the ATO
- Full P&L and balance sheet — double-entry general ledger
- Inventory tracking — stock movements, COGS
If you need any of those, accounting software earns its $30–$70/mo. If you don’t — you’re subsidising features you’ll never open.
When to upgrade
Reasonable triggers to move up to Xero or MYOB:
- You hire your first employee (you need STP payroll)
- You cross the $75,000 GST registration threshold and want bank-feed reconciliation
- You start holding stock
- Your accountant charges more in cleanup than the subscription would cost
Until any of those hit, a free invoice app + a tax-deductible expense spreadsheet is plenty.
How to migrate later if you outgrow it
Free Invoice App lets you export your revenue history as CSV, so if you do move to Xero/MYOB later, you walk in with a clean record of every invoice you’ve sent. Nothing is locked in.
Frequently asked questions
Do I legally need accounting software to invoice in Australia?
No. The ATO does not require accounting software. It requires that your tax invoice contains specific information (your identity, ABN, the words “Tax invoice”, date, description, GST amount or statement, and totals) and that you keep records for 5 years. You can meet that with a simple invoice tool, a spreadsheet, or even a Word document.
Can I just use Word or Excel to invoice?
You can, but it’s slow and error-prone. Numbering, totals, GST, and PDF exports all become manual. A free invoicing app does the same job in seconds, emails the PDF, tracks paid vs unpaid, and stores 5 years of records automatically.
What’s the difference between an invoice app and accounting software?
An invoice app handles quotes, invoices, payments and basic client records. Accounting software (Xero, MYOB, QuickBooks) also handles bank feeds, BAS lodgement, payroll, double-entry bookkeeping and full P&L. Most sole traders and side hustles only need the invoice app side.
How do I lodge BAS if I’m not using accounting software?
Export a CSV of your invoices and expenses, or hand the data to your BAS agent. The ATO doesn’t care which tool produced the numbers — only that you can substantiate them with valid tax invoices.
When should I upgrade from a simple invoice tool to Xero or MYOB?
When you start needing live bank feeds, payroll for employees, inventory management, or your accountant insists on it. Until then, you’re paying $30–$70/mo for features you won’t use.