Construction Invoice Template: What UK Builders Must Include

A construction invoice gets checked harder than most. The contractor needs to verify materials, labour, and VAT treatment before processing payment. The subcontractor needs it to match CIS records. And if VAT is involved, the wrong treatment on either side creates mismatches on both VAT returns.

Here's exactly what a UK construction invoice needs — for VAT-registered builders, non-VAT-registered sole traders, and subcontractors working under CIS.

What Every Construction Invoice Must Include

Whether or not you're VAT-registered, a professional construction invoice needs:

• Your name and business address — the name under which you trade and receive payment
• Invoice number — a sequential number that uniquely identifies this invoice
• Invoice date — the date you issued the invoice
• Tax point (time of supply) — usually the date the work was completed or the date of invoice if issued first; relevant for VAT accounting
• Client name and address — the business or individual being invoiced
• Site address — where the work was carried out (often different from the billing address)
• Description of work — enough detail for the client to verify what they're paying for
• Labour amount — itemised separately from materials (critical if working under CIS)
• Materials amount — itemised with receipts available on request
• Payment terms — when payment is due
• Your bank details or payment method

If you're VAT-registered, additional fields apply (see below). If you work under CIS as a subcontractor, a CIS deduction line is required (see the CIS section below).

Full VAT Invoice Requirements

If you're VAT-registered and invoicing a VAT-registered client, you must issue a full VAT invoice. According to HMRC VAT Notice 700 section 16.3, a full VAT invoice must show:

1. A sequential number that uniquely identifies the document
2. The time of supply (tax point)
3. The date of issue (if different from the tax point)
4. Your name, address, and VAT registration number
5. Your customer's name and address
6. A description sufficient to identify the goods or services supplied
7. For each line item: quantity, VAT rate, and amount excluding VAT
8. The gross total amount excluding VAT
9. The rate of any cash discount offered
10. The total amount of VAT (must be expressed in sterling)
11. The unit price (hourly rate, day rate, or per-unit price)

VAT invoices must normally be issued within 30 days of the tax point. The simplified invoice (name, address, VAT number, tax point, description, VAT-inclusive total, rate) is only available for supplies of £250 or less.

VAT Rates on Construction Work

Most construction work is standard-rated at 20%. Exceptions:

• Reduced rate (5%) — qualifying energy-saving materials installed in residential property (insulation, solar panels, heat pumps, etc.)
• Zero-rated — new residential builds and certain conversions (empty property conversions, change of number of dwellings) under HMRC Notice 708
• Exempt — not applicable to standard construction work

Mixed projects (e.g. an extension to an existing house) may have different rates on different elements. Get this wrong and you've under- or over-charged VAT, creating compliance issues on both returns.

The VAT Domestic Reverse Charge

If you're a VAT-registered subcontractor invoicing a VAT-registered contractor, the domestic reverse charge almost always applies. Under reverse charge:

• You do not add VAT to your invoice
• The contractor accounts for the VAT on their own return
• Your invoice must include the statement: "Reverse charge: customer to account for VAT to HMRC"

The reverse charge applies when:

1. Both you and the contractor are VAT-registered
2. The work is standard- or reduced-rated construction reported under CIS
3. The contractor is not an end user (i.e. they will use or sell the construction service further, not consume it themselves)

If the contractor notifies you in writing that they are an end user (they own the building and it will not be used for making further taxable supplies), you charge VAT at the normal rate instead.

Getting this wrong — charging VAT when reverse charge applies, or not charging when reverse charge doesn't apply — creates mismatches on both VAT returns.

For a full breakdown of the rules, see our guide to the VAT domestic reverse charge for construction.

CIS Invoices: The Extra Lines

If you're a subcontractor under the Construction Industry Scheme, your invoice needs two extra elements:

Your UTR (Unique Taxpayer Reference) — the contractor needs this to verify your CIS registration status with HMRC. Without it, they must apply the 30% unregistered deduction rate even if you are registered.

A CIS deduction line — showing the deduction applied to the labour portion only:

Line	Description	Amount

| 1 | Labour — [description] | £X,XXX |

| 2 | Materials — [itemised] | £X,XXX |

| 3 | Subtotal | £X,XXX |

| 4 | CIS deduction at 20% on labour (line 1) | −£XXX |

| 5 | VAT / reverse charge | £XXX or £0 |

| 6 | Total due | £X,XXX |

The CIS deduction applies to labour only — not materials, VAT, plant hire, or consumable stores. Use the CIS Deduction Calculator to check the exact deduction before sending the invoice.

For a full guide to CIS-specific invoicing — deduction rates, how to separate materials, what happens to the deducted amount — see our CIS invoice template guide.

Worked Example: VAT-Registered Builder Invoicing a Developer

A building contractor invoices a property developer for structural work on a new office block (standard-rated, VAT applies, both parties VAT-registered, developer is not an end user):

Item	Amount
Labour — 10 days groundworks, 3 operatives at £250/day each	£7,500
Materials — concrete, rebar, formwork	£4,200
Plant hire — mini-excavator, 4 days	£800
Subtotal	£12,500
VAT — reverse charge applies — customer to account for VAT	£0
Total due	£12,500

Invoice must state: "Domestic reverse charge: customer to account for VAT to HMRC at 20% (£2,500)."

Worked Example: Non-VAT-Registered Builder

A sole trader plasterer under the VAT threshold (£90,000 turnover) invoices a homeowner:

Item	Amount
Labour — re-skimming lounge and hallway, 3 days	£750
Materials — plaster, bonding, skim	£120
Total due	£870

No VAT to show. No VAT number. No reverse charge. Simple invoice with name, address, invoice number, date, description, and bank details.

Note: If you are approaching the VAT registration threshold (£90,000 rolling 12-month turnover as of 2025/26), monitor your turnover and register before you breach it — HMRC requires registration within 30 days of exceeding the threshold.

Common Construction Invoice Mistakes

Combining labour and materials into a single line. If your invoice shows one lump sum, the contractor can't apply the correct CIS deduction — they may deduct from the full amount, not labour only. Always separate them.

Missing UTR on CIS invoices. Without your UTR, the contractor must apply the 30% unregistered rate. This costs you 10 percentage points on every payment and is entirely avoidable — register for CIS and put your UTR on every invoice.

Wrong VAT treatment. Charging VAT under reverse-charge conditions, or omitting VAT when the client is an end user, creates mismatches on both returns.

No tax point shown. Required on full VAT invoices — the tax point determines which VAT period the transaction falls into.

Issuing a VAT invoice more than 30 days after the tax point. This is a compliance breach. If you're running late, issue on the correct date even if work is still being settled.

No reverse-charge wording. When reverse charge applies, the invoice must say so explicitly. Without it, the contractor's accountant may try to post the VAT incorrectly.

Construction Invoice Checklist

For VAT-registered builders invoicing VAT-registered clients (reverse charge applies):

• Sequential invoice number
• Invoice date and tax point
• Your name, address, and VAT registration number
• Client name and address
• Site address
• Labour and materials on separate lines
• Unit price and quantity for each line
• Subtotal excluding VAT
• "Domestic reverse charge" statement and the VAT amount the customer must account for
• Payment terms

For CIS subcontractors (add to the above or to standard invoices):

• Your UTR shown on the invoice
• CIS deduction line (at 20% or 30% on labour only)
• Net payment total after deduction

For non-VAT-registered sole traders:

• Name, address, and contact details
• Invoice number and date
• Description of work
• Labour and materials separated
• Total due and payment terms

This is general guidance on construction invoice requirements, not tax advice. VAT and CIS rules have specific compliance obligations — consult a qualified accountant for your circumstances.

Sources

• VAT Notice 700 section 16.3 — information required on a VAT invoice — GOV.UK
• VAT domestic reverse charge for building and construction services — GOV.UK
• Buildings and construction — VAT Notice 708 — GOV.UK
• What you must do as a CIS subcontractor — GOV.UK