What are the best apps to automate invoices and payment reminders for Australian tradies?

ServiceM8, Tradify, Fergus, simPRO and AroFlo all automate invoicing and payment reminders for Australian trade businesses. The right pick depends on how many people are in your crew, how complex your quoting is, and whether you already run Xero or MYOB. Below is a side-by-side comparison of the five apps Australian tradies actually use, what each one costs, how its invoice automation works, and which trades it suits best.

Updated 18/10/2026.

Why does automated invoicing matter for a one or two person trade business?

You finish a hot water replacement at two in the afternoon, drive to the next job, and the invoice does not go out until you sit down after dinner. By then the homeowner has forgotten the amount you quoted, or they have already paid the last tradie who invoiced them first. For a sole trader, every week an invoice sits unsent is a week your cash flow waits.

Automated invoicing closes that gap. The moment you mark a job complete in your app, the invoice goes to the customer with your ABN, the job description, the GST line and a payment link. Payment reminders follow on a schedule you set, so you are not the one sending awkward texts at nine o'clock at night. For a fuller walkthrough of the mechanics, see our guide on automating invoices and payment reminders from your phone.

How did we choose these five apps?

We included an app only if it meets all four of these criteria:

• Australian market presence. Local pricing in AUD, GST handling built in, and Australian support
• Invoice on completion. The app can generate and send an invoice automatically when a job status changes
• Payment reminders. Automated follow-up messages on a schedule, not just a manual resend button
• Accounting sync. A live integration with Xero, MYOB or both, so you are not re-keying every line item

We did not include standalone accounting apps (Xero and MYOB handle invoicing too, but they are not job management tools) or apps with no automated reminder capability. Pricing is noted as at October 2026 and sourced directly; it may change, so confirm on each vendor's site before committing.

How do the five apps compare at a glance?

Every app on this list generates a GST-compliant invoice when you mark a job complete, and every one sends automated payment reminders on a schedule you configure. The differences are in crew size fit, pricing model (flat monthly vs per-user), and how deep the quoting, scheduling and inventory features go. If you are weighing the broader job management question first, our guide on what to look for in a job management app covers the full checklist.

Which app suits which trade and crew size?

• Solo plumber, sparkie or painter. ServiceM8's Solo plan covers quoting, invoicing and payment reminders at the lowest entry price. Tradify is a close alternative if you prefer per-user pricing and plan to add a second person soon
• Small crew of 2 to 5. Tradify or Fergus, both handle job scheduling, quoting and invoicing in one place and scale per seat without jumping to enterprise pricing
• Growing business of 5 to 15. AroFlo if you run maintenance or asset-tracked work (HVAC, fire protection, lifts). Fergus if your jobs are project-based with multiple cost centres
• Large operation with 15 or more staff. simPRO handles multi-stage quoting, purchase orders, progress claims and inventory across branches, with custom pricing to match

None of these apps lock you in permanently. Most offer monthly billing and data export, so switching costs are manageable if your business outgrows the tool. The key is matching the app to where you are now, not where you hope to be in three years. If you are already running one of these and wondering whether AI can sit on top of it, see whether AI can talk to ServiceM8 or Tradify.

How do these apps connect to your accounting software?

Every app on this list syncs with at least Xero and MYOB. In practice that means:

• Invoices flow automatically. When the job management app creates an invoice, a matching invoice appears in your accounting software within minutes, with the line items, GST and customer details intact
• Payments reconcile. When a customer pays via the invoice link, the payment matches in your ledger without you touching it
• Your BAS stays current. Because every transaction is in Xero or MYOB, your bookkeeper or accountant sees the full picture at BAS time without chasing you for missing invoices

The one thing to watch: some syncs are one-directional (job app to accounting only). If you edit an invoice in Xero after it has synced, the change may not flow back to the job app. Pick a direction and stick with it. For a broader look at accounting integration, read our comparison of the best accounting software for tradies.

What must an automated invoice include under Australian tax law?

Whether you send the invoice manually or your app sends it automatically, the ATO's requirements are the same. As the Australian Taxation Office states: "A tax invoice must include the seller's identity and ABN, the date the invoice was issued, a brief description of the items sold including the quantity and the price." For invoices of $1,000 or more (GST inclusive), the buyer's identity or ABN must also appear.

Every app on this list populates those fields from the job record, so compliance is handled provided your business details and ABN are set correctly in the app's settings. If you are chasing an invoice that has gone unpaid, our guide on chasing unpaid invoices without being rude walks through the escalation path, and our guide on whether to take a deposit before starting a job covers the front-end protection.