Plumbing invoicing software should turn a service call into an itemized invoice before you leave the driveway: service call fee, labor hours, parts, permit and disposal, with sales tax applied the way your state requires. Below is a filled water-heater invoice for $1,990.02 and a checklist to judge any tool, including ours.
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A filled invoice for replacing a 50-gallon gas water heater, with a $500 deposit taken when the job was booked.
| Description | Qty | Rate | Amount |
|---|---|---|---|
| Service call and diagnosis | 1 | $95.00 | $95.00 |
| 50-gallon gas water heater, 6-year warranty | 1 | $1,150.00 | $1,150.00 |
| Expansion tank, gas flex connector and fittings | 1 | $86.00 | $86.00 |
| Licensed plumber labor | 3.5 h | $125.00 | $437.50 |
| Haul-away and disposal of old heater | 1 | $60.00 | $60.00 |
| Permit fee (pass-through) | 1 | $75.00 | $75.00 |
| Subtotal | $1,903.50 | ||
| Sales tax, 7% on parts only ($1,236.00) | $86.52 | ||
| Total | $1,990.02 | ||
| Less deposit received Oct 20 | -$500.00 | ||
| Balance due by Nov 11 | $1,490.02 |
Example rates, not recommended prices. Sales tax rules for plumbing vary by state: some tax parts only, some tax repair labor too, and some treat installation into a home as a contractor job where you pay tax on materials and don't charge it. Check your state's revenue department.
If you dispatch several plumbers, a field-service suite earns its price: Jobber starts at $49 a month and Housecall Pro at $79 a month (October 2026, monthly billing). A one- or two-truck plumbing business that quotes, invoices and chases payment can do that in InvoiceSonic, free to start or A$19 a month for Pro, with no dispatch or GPS.
Plumber invoice template · Best invoicing software for contractors
Plumbing invoices carry rules that depend on where the job is. In Victoria a job over $750 needs a compliance certificate within 5 days; in Queensland plumbing needs a QBCC licence at any value; in the UK, plumbing for a VAT-registered builder falls under the domestic reverse charge, so the invoice shows no VAT to pay. US plumbers earned a median $30.67 an hour in May 2025.
Example rates: use your own.
| Line | Qty | Rate | Amount |
|---|---|---|---|
| Call-out and diagnosis | 1 | 95.00 | 95.00 |
| Plumbing labour (hours) | 2 | 110.00 | 220.00 |
| Parts and fittings | 1 | 180.00 | 180.00 |
| Tax | 49.50 | ||
| Total | 544.50 | ||
| US median wage, plumbers (47-2152) | $63,800 a year, $30.67 an hour (May 2025) source |
|---|---|
| Victoria: compliance certificate | Required when the job exceeds $750, counting materials, appliances, labour and GST source |
| Victoria: certificate timing | To the customer and lodged within 5 days of completion; purchased certificates expire after 12 months (since 13 Aug 2025) source |
| Queensland: licence | Plumbing and drainage need a QBCC licence whatever the value; ads must show the licence number source |
| UK: VAT domestic reverse charge | Since 1 March 2021 for construction services, including installing heating, drainage and water supply source |
| UK: reverse-charge invoice wording | Must state the customer accounts for the VAT (e.g. "customer to account to HMRC"); not for homeowners or other end users source |
Checked 13 November 2026 on: BLS OEWS May 2025 (47-2152) · Building and Plumbing Commission (Vic): compliance certificates · QBCC: advertising and licences · HMRC: VAT domestic reverse charge for construction · HMRC: reverse charge technical guide. Not legal or tax advice.
Check which rules the job triggers
Victoria over $750 means a compliance certificate within 5 days. A UK job for a VAT-registered builder may fall under the reverse charge. Decide before you write the invoice, not after.
Split the call-out from the repair
Bill the call-out once, then labour from the time the repair started. Customers dispute plumbing bills most often when the two overlap.
List parts at their sell price
Show each part or a parts total at the price you charge, so the tax line is calculated on the right base.
Attach the certificate or compliance number
Put the certificate number on the invoice or send the certificate with it. Landlords and agents often won't approve payment without it.
Does a plumbing invoice in Victoria need a compliance certificate?
Yes, when the job exceeds $750 including materials, appliances, labour and GST. The certificate goes to the customer and is lodged within 5 days of finishing.
Do UK plumbers charge VAT to a builder?
Not when the domestic reverse charge applies (construction services for a VAT-registered contractor who isn't the end user). The invoice shows the VAT the customer must account for instead.
Do I need a licence for small plumbing jobs in Queensland?
Yes. QBCC licensing for plumbing and drainage applies regardless of the value of the work.
What do US plumbers earn an hour?
The BLS median for plumbers, pipefitters and steamfitters was $30.67 an hour ($63,800 a year) in May 2025. Your charge-out rate needs to cover travel, tools, insurance and unbilled time on top.
The form below starts with the call-out, labour and parts from the calculator above. Change the rates to yours, add the service address and licence or certificate number, then download the PDF.
Create the job invoice now, then save the customer, status and reminder workflow when you are ready.
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