Australian invoicing software
GST-compliant tax invoices, ABN validation, AUD card payments, and reminders that chase the money for you. Quote to paid from your phone — without paying for a full accounting suite you don't need yet.
Free plan available · No credit card · GST & ABN handled by default
Built for Australia
A US invoicing app can send a PDF. Australian invoicing software has to produce a valid tax invoice — the ATO has rules, and OneBookPlus follows them by default.
Automatic 10% GST on every invoice and quote, inclusive or exclusive. The total, the GST line, and the subtotal always reconcile.
Your ABN and the words 'Tax Invoice' on every document — the fields the ATO expects — plus real-time ABN validation for your clients.
Australian dollar formatting and AUD card payments via Stripe Connect. Customers pay by tapping a link; the invoice flips to Paid.
Every paid invoice feeds GST collected into a BAS-ready summary, so quarter-end isn't a spreadsheet rebuild.
This page is the overview. For exactly how invoices, GST, reminders, and payments work inside the app, open the OneBookPlus Invoicing feature page.
How we compare
Xero, MYOB, and QuickBooks are full general ledgers built for bookkeepers. If your day is quote, invoice, get paid — you're paying for ledgers and payroll you don't touch. Here's the invoicing side-by-side.
| Feature | OneBookPlus | Xero | MYOB | QuickBooks |
|---|---|---|---|---|
| GST-compliant tax invoices | Yes | Yes | Yes | Yes |
| Free plan for invoicing | Yes | No | No | No |
| Real-time ABN validation | Yes | No | No | No |
| Quote-to-invoice in one tap | Yes | Yes | No | No |
| Automatic SMS payment reminders | Yes | No | No | No |
| Online booking built in | Yes | No | No | No |
| Mobile-first quote-on-site | Yes | No | No | No |
| No double-entry ledger to learn | Yes | No | No | No |
| Price | Free / $29 | ~$35/mo | ~$30/mo | ~$30/mo |
Already on Xero and just need simpler invoicing? Read the full OneBookPlus vs Xero comparison for the line-by-line breakdown.
Real-world scenario
A real day for a sole-trader electrician
It's Tuesday morning. Mia, a sole-trader electrician, finishes a switchboard upgrade in Brunswick. Standing at the van she opens OneBookPlus on her phone, where the quote she sent last week is already accepted — so she taps "Convert to invoice." The job's line items, the 10% GST, and her ABN are already on it; she doesn't retype anything.
She emails the tax invoice to the customer before she's pulled out of the driveway. Because the same customer record came from the original quote, there's no re-keying a name, address, or email — the invoice, the quote, and the contact are one record.
The invoice's due date is set to 7 days. Mia forgets about it — that's the point. On day 8, OneBookPlus sees it's unpaid and sends an automatic reminder by SMS. No spreadsheet of who owes what, no awkward "just checking in" call.
The customer taps the pay link, pays by card in AUD, and the invoice flips to Paid. The GST on that sale lands in Mia's BAS summary automatically. Quote to paid, start to finish, without her sitting at a desk once.
Stop overpaying
Most small businesses stitch together 4-6 tools that don't talk to each other. Here's what that typically costs.
Try it free
The same GST and tax-invoice maths OneBookPlus runs automatically, available as free tools you can use before you create an account.
Want a buyer's-guide deep dive first? Read the best invoicing software for tradies in Australia — how the options actually stack up for on-site trades.
Built in Melbourne, AU
ATO-ready from day one
256-bit encryption
No credit card needed
GST and ABN handled for you. Free to start, no credit card. Upgrade when you're ready for the full suite.
Last reviewed and updated: by Bishal Shrestha
FAQ
Australian invoicing software handles the rules the ATO expects on a valid tax invoice: 10% GST calculated correctly (inclusive or exclusive), the words 'Tax Invoice', your ABN on every invoice, AUD formatting, and Australian date formats. Most US-built invoicing apps bolt GST on as an afterthought and don't validate ABNs at all. OneBookPlus is built in Melbourne for the Australian market, so a compliant tax invoice is the default — not something you configure.
Yes — the Free plan includes GST-compliant invoicing, quotes, a contact record for every customer, and payment reminders, with no credit card required. Paid plans (from $29/month) lift volume limits and add team members, Stripe Connect payments, recurring invoices, and the rest of the suite. See the pricing page for the per-tier limits.
Not for most small businesses. OneBookPlus invoicing feeds a built-in Finance module with BAS-ready GST summaries, so the quote-to-paid-to-BAS loop lives in one app. Xero and MYOB are full general ledgers aimed at bookkeepers and accountants; if you don't need double-entry ledgers and payroll yet, paying for a full accounting suite just to send invoices is overkill.
Yes. OneBookPlus is mobile-first — the iPhone and iPad apps let you quote on-site, convert that quote to a tax invoice in one tap, and take payment before you leave the job. The same invoices sync to the web dashboard automatically, so nothing has to be re-entered at the office.
When an invoice passes its due date, OneBookPlus can automatically send a polite reminder by email or SMS — no spreadsheet of who-owes-what, no awkward phone calls. You set the cadence once; the reminders chase the money for you until the invoice is marked paid.
Yes — OneBookPlus checks ABNs in real time against the Australian Business Register, so you can confirm a client or supplier is registered (and GST-registered) before you invoice them. There's also a free ABN lookup tool you can try without signing up.
This page is the overview of why OneBookPlus is the right Australian invoicing software for your business. The Invoicing feature page is the product detail — exactly how invoices, GST, reminders, and payments work inside the app. Start here, then open the Invoicing feature page for the deep dive.
About the author
Founder & CEO, OneBookPlus
Bishal has over a decade of experience in digital marketing, web development, and small business consulting across Australia. OneBookPlus is built and supported from Melbourne for Australian small and medium businesses. Its invoicing is GST- and ABN-aware by default — a valid tax invoice is the starting point, not a setting you configure.