A plumber invoice should identify the property, describe the fault or installation, separate labour from materials and state the amount due. For landlord, commercial and subcontract work, it should also carry the job, purchase-order and certificate references.
Use this UK plumber invoice template for work completed in 2026.
This is general information, not tax or legal advice. Check the VAT and CIS treatment of the specific job.
Plumber invoice template
[Your legal business name]
[Address, telephone and email]
[Company number, if limited]
[VAT number, if registered]
Bill to: [Customer or contractor name and address]
Work site: [Property address]
Job reference: [ ]
Purchase order: [If applicable]
Invoice number: [Unique number]
Invoice date: [Date in 2026]
Work completed: [Supply date or period]
Payment due: [Date and agreed term]
| Description | Quantity | Rate | Amount |
|---|---|---|---|
| Call-out or labour: [work completed] | [hours] | £[ ] | £[ ] |
| Materials: [parts supplied] | [ ] | £[ ] | £[ ] |
| Testing or certification: [reference] | [ ] | £[ ] | £[ ] |
| Subtotal | £[ ] | ||
| VAT [rate or treatment] | £[ ] | ||
| Gross total | £[ ] | ||
| CIS deduction [if applicable] | -£[ ] | ||
| Amount due | £[ ] |
Payment reference: [Invoice number]
Attached: [Gas record, commissioning sheet, photos, warranty or signed worksheet]
Emergency call-out example
A useful line explains both the fault and the fix:
| Description | Amount |
|---|---|
| Emergency call-out: isolate leaking kitchen supply and replace failed service valve | £140 |
| 15mm service valve and fittings | £24 |
| Subtotal | £164 |
| VAT at 20% | £32.80 |
| Amount due | £196.80 |
“Plumbing repair” gives the customer less to check. The longer description records the location, fault and action taken.
Installation invoice example
For a boiler, bathroom or cylinder installation, connect the invoice to the accepted quote and agreed stages.
Include:
- property and room
- make or item description where relevant
- work included in this stage
- quote and variation references
- deposit already paid
- balance due now
- commissioning or certificate reference
The stage payment invoice template shows how to display deposits, previous invoices and the amount remaining.
Landlord and letting-agent invoices
A landlord or agent may manage several properties. Put the property address and their internal reference near the top.
Use separate lines for:
- attendance and diagnosis
- repair labour
- parts supplied
- safety or condition checks
- remedial work authorised after inspection
Attach the relevant report or record and repeat its reference on the invoice. Do not send an invoice that says only “works at rental property”.
Labour and materials
Separating labour and parts makes the bill easier to approve. It is also essential when CIS applies because the contractor normally calculates the deduction after excluding qualifying materials and VAT.
Keep merchant receipts and state the actual items supplied. Do not put margin, labour or general overhead into a line labelled materials merely to reduce the deduction base.
When CIS applies to plumbing work
Plumbing installed as part of construction work can fall under CIS when you are working as a subcontractor for a contractor. A repair invoiced directly to a homeowner is not a CIS invoice just because a plumber carried out the job.
For a subcontract stage with £2,000 labour and £750 materials at 20%:
| Calculation | Amount |
|---|---|
| Labour | £2,000 |
| Materials | £750 |
| Gross value | £2,750 |
| CIS deduction: 20% of labour | -£400 |
| Amount due before any normal VAT collected | £2,350 |
The contractor verifies the rate. Use the CIS invoice template to check the full 2026 layout.
VAT domestic reverse charge
The VAT domestic reverse charge can apply to covered construction services between VAT-registered businesses when the customer is not an end user or intermediary supplier. It does not apply to every plumbing job.
Where it applies, the invoice states that the customer accounts for the VAT. The supplier does not add that reverse-charge VAT to the amount collected.
Keep VAT and CIS separate:
- reverse-charge VAT uses the taxable supply
- CIS uses the appropriate labour amount
- the invoice shows both calculations clearly
Deposits and payment plans
A large installation may use a deposit, first-fix stage, second-fix stage and completion balance. Each amount needs a trigger and due date.
The deposit is part of the agreed total unless the quote says otherwise. Show previous payments so the customer can see how the balance was reached.
Payment wording
Repeat the term agreed before the work. Print the actual date.
For a domestic repair, due on receipt may be appropriate if agreed. A commercial customer may require 30 or 45 days and a purchase order. The UK invoice payment terms guide explains the wording.
What to attach
Depending on the job, attach:
- signed worksheet
- photographs
- commissioning record
- warranty information
- gas or safety record where relevant and properly issued
- approved variation
- valuation or purchase-order support
Use the same job and document references in the filenames.
Final plumber invoice check for 2026
- Is the legal customer correct?
- Is the property address shown?
- Does the description name the fault or installation?
- Are labour and materials separate?
- Is the quote, job or PO reference present?
- Is the VAT treatment correct?
- Has the contractor confirmed CIS where applicable?
- Are deposits and previous payments shown?
- Is the due date printed?
- Are promised records attached?
Sendinvo creates invoices for plumbers with VAT, CIS deductions, deposits, payment plans, attachments and reminders. Start free and send the 2026 invoice while the job details are still fresh.