Best Invoicing App for Mechanics in Australia (2026): 8 Apps Compared

The best invoicing app for mechanics Australia-wide in 2026 is InvoiceSonic, because a repair invoice has to carry labour hours at your shop rate and every part at your retail price on one document, with the GST adding up and a quote the customer approved sitting behind it. If you only need one compliant PDF today, the free mechanic invoice template on this site builds it in the browser with no signup. If your real problem is bookings, job cards and parts costed against each job, a job-management app such as ServiceM8 does more, at a higher price. We put all eight through the parts-and-labour test.

Quick comparison

"Not listed" means exactly that. The tool's own Australian pricing or feature page did not state that feature at the time of writing, so we have not marked it as a yes. Most "top 10 invoice app" posts assert features nobody checked. Parts cost and markup tracking is the column that matters most to a workshop and the column almost nobody publishes, so ask about it directly on a trial before you commit.

How we tested: the parts-and-labour test. Three questions per tool. Can one tax invoice show labour hours at a shop rate and itemised parts at your markup, and still total the GST correctly? Does the tool hold a quote the customer approved before the car went on the hoist? And does it track what the parts cost you, so you can see the margin on the job rather than guess at it?

That test matters because a mechanic's invoice is the most itemised document in the trades. A cleaner sends one line. You send six or ten, mixing time and goods, and the customer reads every one of them. Here is a normal Tuesday: a logbook service with front brakes.

The worked job. 3.5 hours at $132 an hour is $462.00 of labour. Parts at your retail price: brake pads $185.00, oil filter $28.50, five litres of oil $96.50 and coolant $100.00, which is $410.00. Add a $45.00 environmental levy for the used oil and filter. The subtotal is $917.00 ex GST. GST line by line is $46.20 + $18.50 + $2.85 + $9.65 + $10.00 + $4.50 = $91.70, so the customer pays $1,008.70. Six lines, two categories, one GST total that has to reconcile. If your app prints a GST figure that is even a cent off the sum of the lines, the fleet customer's bookkeeper will send the invoice back, and you will spend twenty minutes on the phone over five cents. Check it with the GST calculator the first time you set a template up.

Who fails the test. All eight can put parts and labour on one line-itemised invoice, so the printing half is not the differentiator anyone pretends it is. On the second question only three publish a quote or estimate feature: InvoiceSonic on Pro, Square Invoices on its free plan, and the free quote generator on this site. On the third question every single one of the eight fails or is unconfirmed. Not one of them states parts cost and markup tracking per job on the pages we checked at the time of writing. That is the honest answer the rest of this SERP will not give you: buy an invoicing app for the invoice, and keep your parts margin in your own spreadsheet or in a job-management system built for it.

1. InvoiceSonic — Best overall

InvoiceSonic is an invoicing app that builds a professional tax invoice in about a minute, and it fits the two-part shape a repair bill needs: labour lines at your hourly rate, parts lines at your retail price, one GST total, with the ABN field, the BSB format and the 10% GST label already in the right places. Tax handling is localised across 19 countries, which in practice means you are not fighting an American template.

It clears the first two questions of the parts-and-labour test and then keeps going. Online quote acceptance and conversion on Pro means the customer approves the estimate before you touch the car, and the approved quote becomes the invoice in one click. That is the single most useful feature on this page for a mechanic, because almost every dispute in a workshop is a dispute about authorised work. You can also take a percentage or fixed deposit up front, which is how you stop funding a $410 parts order out of your own account, and raise progress claims as separate invoices on a longer rebuild. Invoice open tracking tells you the moment a fleet manager has read it, an email receipt goes out automatically when you mark the invoice paid, and a cloud invoice history means the last service on that rego is there to look up. Payment is by bank transfer or PayID with no InvoiceSonic transaction fee, so $1,008.70 invoiced is $1,008.70 banked. Where it stops is question three: it does not track parts cost or markup, and it does no bookings, job cards or timesheets.

Pros

• Online quote acceptance then one-click conversion to the invoice on Pro, so authority to proceed is documented before the spanners come out.
• Deposits up front, as a percentage or a fixed amount, so the customer funds the parts order rather than you.
• Bank transfer and PayID with no InvoiceSonic transaction fee — the $22.19 a 2.2% card fee would take off the job above stays with you.

Cons

• No materials, expense or cost tracking per job, so the margin on $410 of parts is something you work out yourself.
• The free plan is capped at 3 saved invoices, 1 tracked email send and 1 automatic reminder a month, and the 7-day Pro trial requires a card up front.

Price: at the time of writing, the free plan is A$0 a month and you can create one invoice with no sign-up and no credit card; Pro is A$19 a month billed monthly, or A$168 a year billed annually, which works out at A$14 a month and saves A$60 against monthly. Annual is price-locked, so the rate never increases while the subscription is active. Best for: mobile mechanics and small workshops who want the quote approved, the invoice itemised and the money in the bank without a card fee.

2. Invoice-Generator.com.au — Best free tool

Invoice-Generator.com.au is a free tax invoice generator that produces a finished PDF in your browser with no signup, no watermark, no ads and no invoice limit. It is the right tool when the car is going out the door in ten minutes, the customer wants an invoice with an ABN on it, and you are not about to start a subscription.

The mechanic invoice template takes as many line items as the job needs, so labour hours and each part sit on their own row with a quantity and a price, which is what the tax invoice requirements actually ask for. There is an ABN field, a 10% GST line and a live compliance checklist that flags a missing ABN or GST amount before you hand the PDF over. Nothing you type leaves the browser, which matters when the invoice carries a customer's address and rego. There is a separate free quote generator for the estimate and a GST calculator for the maths. It fails the back half of the parts-and-labour test outright, and we would rather say so than dress it up: it builds the document and nothing else. No sending, no tracking, no reminders, no saved customer list, no parts list, no payment collection.

Pros

• Free forever, no signup, no watermark, no invoice limit, and unlimited line items for a long parts list.
• The compliance checklist catches a missing ABN or GST amount before the customer's bookkeeper does.

Cons

• No sending, tracking or automatic reminders, so chasing an unpaid repair is entirely on you.
• No saved customer or parts list, so a regular fleet client is retyped every visit.

Price: free, always. Best for: one-off repairs, cash-job invoices, and mechanics under the GST threshold who send a handful of invoices a month.

3. ServiceM8 — Best for booking jobs, not just billing them

ServiceM8 is Australian-built job management that runs a job from enquiry through to payment, and its free plan is unusual because it includes scheduling. If your real problem is which car is booked in on Thursday and who is doing it, this is the only tool here that solves it at $0.

On the parts-and-labour test it is a partial pass. Invoices go out from the job with line items, GST and ABN handling is Australian by default, but quoting and parts cost tracking are not stated on the pricing page at the time of writing, so treat them as unconfirmed and check them on a trial. Watch the free cap: 30 jobs a month sounds generous until you count a workshop turning five jobs a day, which is past 30 in six working days. Paid plans are charged per business rather than per user, which is the right shape for a workshop with two technicians and a service adviser — most trade software charges per head and punishes you for hiring.

Pros

• The free plan includes scheduling, which nothing else in this list offers for nothing.
• Paid plans are per business, not per user, so a second technician does not double the bill.
• Australian-built, so GST and ABN are not an afterthought.

Cons

• The field app is iPhone and iPad only, which rules it out for a mobile mechanic on an Android handset.
• 30 jobs a month runs out in about six working days for a busy workshop, and parts cost tracking is not listed.

Price: at the time of writing, free for 30 jobs a month, then AUD $29, $79, $149 or $349 per month including GST. Best for: workshops and mobile mechanics who need a diary as much as an invoice, and who are already on iPhones.

4. Square Invoices — Best if customers tap a card at pick-up

Square Invoices gives you unlimited free invoices, estimates and automatic reminders, and the customer pays by tapping a card link in the email. When someone is standing at the counter wanting the keys and their car is on your hoist, being paid in ninety seconds is worth real money.

It passes two of the three questions: itemised parts and labour, and an estimate the customer can approve. The catch is the fee and the plan line. At 2.2% on online card payments, the $1,008.70 job above costs you $22.19. One job a day, five days a week, 46 weeks a year is 230 invoices and $232,001 of billings at that average, and 2.2% of that is $5,104.02 a year in card fees — roughly thirty times the A$168 an annual InvoiceSonic Pro subscription costs at the time of writing. The other trap is that estimate auto-convert and milestone payment schedules are Plus only, so on the free plan the approved estimate does not become the invoice by itself and you rebuild the six lines by hand.

Pros

• Unlimited free invoices with estimates and automatic reminders on the free plan.
• Customers pay by card from the invoice itself, so the money is often in before the car leaves.

Cons

• 2.2% on online card payments is $22.19 on a $1,008.70 repair and $5,104.02 a year on 230 jobs like it.
• Estimate auto-convert and milestone schedules sit behind the Plus plan, and there is no scheduling at all.

Price: at the time of writing, free, or Plus at AUD $30 per month; 2.2% on online card payments. Best for: workshops whose customers pay on collection by card and who price the 2.2% into the labour rate.

5. Zoho Invoice — Best free app that sends and stores

Zoho Invoice is free — Zoho states no cost and no contracts — and unlike a PDF generator it sends the invoice, saves the customer and keeps the history. For a mechanic with a dozen repeat customers and no budget, that combination is hard to beat at A$0.

On the parts-and-labour test it prints a properly itemised Australian invoice and emails it, but quoting and parts costing are not stated on the Australian page at the time of writing, so both are unconfirmed. The trade-off is the surroundings. Zoho Invoice is the front door to a very large product suite, the interface is dense next to a single-purpose invoicing app, and real support is a paid-suite affair. If you enjoy software, that is fine. If you want to raise an invoice on a phone with grease on your hands, it is a lot of screen.

Pros

• Genuinely free with no contract, and it sends and stores invoices rather than just building a PDF.
• Invoicing in 19-plus languages, useful if you bill customers who would rather read their own.

Cons

• The interface is dense, and it is the entry point to a large upsell suite.
• Support is really aimed at paid-suite customers, and quoting and parts costing are not listed.

Price: free at the time of writing. Best for: mechanics who want sending, tracking and a saved customer list for nothing and do not mind a busy interface.

6. Bookipi — Best for invoicing from the driveway

Bookipi is a simple invoice app that syncs between web and mobile, and it puts overdue reminders and recurring invoices on every plan including free. For a mobile mechanic who finishes a job in someone's driveway and wants the invoice gone before the ute is started, mobile-first is the right shape.

Recurring invoicing matters more to a mechanic than it looks. A fleet on a monthly service arrangement, a dealer you do overflow work for, a rideshare driver on a scheduled inspection — those are recurring bills, and Bookipi automates them at no cost. The catch is volume: the free plan stops at 3 invoices a month, and one job a day is 20-odd. So the honest read is that Bookipi passes on the Starter plan, not the free one, and Starter is priced in US dollars, which means your invoicing cost moves with the exchange rate.

Pros

• Overdue reminders and recurring invoices even on the free plan, which no other free option here confirms.
• Web and mobile stay in sync, so an invoice started on the phone finishes on the workshop computer.

Cons

• 3 free invoices a month is nowhere near a working mechanic's volume.
• Priced in USD, so what you pay moves with the AUD, and parts costing is not listed.

Price: at the time of writing, free for 3 invoices a month; Starter US$9.99 per month; Professional US$52 per month. Best for: mobile mechanics and part-timers who want reminders and recurring bills automated on a small budget.

7. Xero — Best for supplier bills, GST and BAS in one place

Xero is accounting software, not an invoicing app, and that distinction decides whether it belongs on your screen. For a workshop with a monthly parts account, bank feeds pull the supplier payments in and the GST and BAS come out the other end, which is a genuinely different problem from raising a tax invoice.

On the parts-and-labour test it prints the invoice properly and fails the spirit of the exercise: you are buying a general ledger, and invoicing is one module inside it. There is no free plan. For a one-person mobile mechanic it is more software than the job needs. But the picture flips once you have two technicians, a Repco account and a quarterly BAS, because the alternative is paying a bookkeeper to re-key everything you invoiced. Note also that per-job parts costing is not something the Australian pricing page states, so do not assume the ledger gives you job margin without checking.

Pros

• Invoicing, bank feeds, GST and BAS in one system your accountant already knows.
• Supplier bills for parts land in the same place as the invoices you raised against them.

Cons

• No free plan, and considerably more software than a solo mobile mechanic needs.
• Per-job parts cost and margin tracking is not listed, so job profitability is not automatic.

Price: paid plans available — check current pricing. Best for: workshops with staff, supplier accounts and a bookkeeper already working in Xero.

8. MYOB — Best if your accountant has always used MYOB

MYOB is the long-standing Australian accounting incumbent, and plenty of workshops that have been trading twenty years are on it because their accountant is. That familiarity is the reason to choose it, and it is a legitimate reason: software your accountant can open without a phone call is cheaper than software they bill you to learn.

Everything true of Xero on the parts-and-labour test is true here. The invoice itemises parts and labour and handles Australian GST, quoting and parts costing are not stated on the pages we checked at the time of writing, and there is no free plan to test it on. It is heavier than a sole trader needs. If you are a one-van mobile mechanic reading this because you want to stop typing invoices in Word, MYOB is not the answer to that question, and neither is Xero.

Pros

• An Australian accounting incumbent, so GST and BAS are built around Australian rules rather than translated.
• Most Australian accountants and bookkeepers can work in it without being trained.

Cons

• No free plan, and heavier than a solo trader needs.
• Invoicing is a module inside a ledger, not the product, and parts costing per job is not listed.

Price: paid plans available — check current pricing. Best for: established workshops whose books have always been kept in MYOB.

What to look for in an invoicing app for mechanics

Mechanical work bills in two currencies at once: your time and other people's goods. That is what makes the invoice long, the GST fiddly and the argument about authorised work so common. These six things decide which app suits you.

• Separate labour and parts lines, each with a quantity and a price. Where you are registered for GST, the ATO wants a description of what was supplied including quantity and price, so "service and repairs $1,008.70" is not a compliant tax invoice for a job like this. Check one more thing while you are there: what the customer's copy shows. If $410 of retail parts cost you $296 at trade, that $114 of margin is your business, and no column on the customer's PDF should mention it.
• A GST total that matches the sum of the lines. On the worked job, the six line amounts of GST come to $91.70 and 10% of the $917.00 subtotal is $91.70. Those two figures should always agree. Where they do not, the app is rounding somewhere and you will hear about it from a fleet bookkeeper. The GST calculator settles it in seconds.
• A quote the customer approves before the car goes on the hoist. Written authority to proceed is the cheapest insurance in a workshop. InvoiceSonic converts an accepted quote into the invoice on Pro, Square has estimates, and there is a free quote generator here if your app has none.
• Deposits, because you fund the parts. On the $917 job, $410 of it is parts — about 45% of the invoice paid for by you before the customer pays anything. A deposit facility, a percentage or a fixed amount, moves that risk back where it belongs.
• The fee attached to how you get paid. PayID and bank transfer cost nothing and clear overnight. Card payments at around 2.2% cost $22.19 on a $1,008.70 repair and $5,104.02 a year across 230 of them. Decide whether you are absorbing that or pricing it in, and read up on invoice payment terms in Australia before you set 30 days as a habit.
• Whether your real problem is invoicing or job management. One mobile mechanic doing two jobs a day has an invoicing problem. Two hoists, three technicians and a booking diary is a scheduling problem, and no invoicing app solves it. Be honest about which you are buying for, and if the invoices are already going out and simply not being paid, the fix is in how to chase overdue invoices, not in new software.

Which one should you choose?

Run the numbers at 230 invoices a year, which is roughly one job a day. At the time of writing that costs A$0 with the free generator or Zoho Invoice, A$168 with InvoiceSonic Pro billed annually — about 73 cents an invoice — US$9.99 a month with Bookipi Starter, nothing with ServiceM8 until you pass 30 jobs a month, and $0 in subscription but $5,104.02 in card fees with Square if every customer taps a card. The cheapest subscription is not the cheapest outcome.

• If you are a mobile mechanic doing one or two jobs a day → InvoiceSonic on Pro, with quotes accepted online and deposits covering the parts.
• If you need one compliant invoice today and nothing else → the free Australian tax invoice generator, and email the PDF yourself.
• If your problem is bookings and job cards and you are on an iPhone → ServiceM8, starting on the free 30-job plan.
• If you want sending and a saved customer list for nothing → Zoho Invoice, and accept the dense interface.
• If you have staff, a parts account and a quarterly BAS → Xero or MYOB, whichever your bookkeeper already opens.

When not to use InvoiceSonic or a free generator. If what you need is a diary, job cards, technician timesheets and parts costed against each job, an invoicing app is the wrong purchase: InvoiceSonic does no scheduling, timesheets or staff management and no materials or cost tracking at all, and a free PDF generator does even less. ServiceM8 puts scheduling on its free 30-job plan and prices paid plans per business rather than per user, which is the better answer for a workshop with technicians to roster. If you do not want a subscription and your customers pay by card anyway, Square Invoices gives you unlimited invoices, estimates and automatic reminders for nothing, and that free plan beats paying A$19 a month — as long as you have written the 2.2% into your labour rate. And once you have supplier accounts, staff and a BAS to lodge every quarter, that is accounting software territory: Xero or MYOB, not an invoicing app. Our free generator, honestly, is the wrong tool the moment the same invoice has to be sent, tracked or chased.

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