Construction Invoice Template UK — What to Include

Everything your construction invoice needs to be legal, professional, and get you paid on time.

Last updated: April 2025

A professional construction invoice is not just about getting paid — it is a legal document that must include specific information under UK tax law. A poorly formatted or incomplete invoice can delay payment, create disputes, and cause problems with HMRC if you are ever audited.

This guide covers every element a UK construction invoice should include, the VAT rules that apply, CIS considerations for subcontractors, and the most common invoicing mistakes that cost tradespeople money.

What Every UK Construction Invoice Must Include

1. The word "Invoice" — it sounds obvious, but the document must be clearly labelled as an invoice
2. A unique invoice number — sequential numbering (INV-001, INV-002, etc.) is required for tax records
3. Your business name and address
4. Your client's name and address
5. The date of issue
6. A description of the work completed — itemised where possible
7. The amount due — broken down by labour and materials if applicable
8. VAT registration number (if VAT registered)
9. VAT breakdown — net amount, VAT amount, and gross total shown separately
10. Payment terms — when payment is due (e.g., "Payment due within 30 days")
11. Your bank details — sort code, account number, and account name for bank transfer

VAT Rules for Construction Invoices

If your business is VAT registered (mandatory once your taxable turnover exceeds £90,000), your invoices must show:

• Your VAT registration number
• The net amount (before VAT)
• The VAT rate applied (usually 20%, but 5% for some energy-saving installations)
• The total VAT amount
• The gross total (net + VAT)

If you are not VAT registered, state this on the invoice: "Not VAT registered — no VAT has been charged."

CIS (Construction Industry Scheme) Considerations

If you are a subcontractor working for a main contractor, the Construction Industry Scheme applies. Key points:

• The contractor deducts 20% from your labour payment (or 30% if you are not verified with HMRC) and pays it to HMRC on your behalf
• Materials are not subject to CIS deductions — always separate labour and materials on your invoice
• Include your UTR (Unique Taxpayer Reference) on subcontractor invoices so the contractor can verify your CIS status
• The contractor should provide you with a CIS deduction statement showing the gross amount, deduction, and net payment

Payment Terms Best Practice

Standard UK construction payment terms are 30 days from invoice date. However, for smaller residential works, 14-day terms are common and perfectly reasonable. Your invoice should clearly state:

• When payment is due (specific date or number of days)
• Accepted payment methods (bank transfer, card, etc.)
• Your bank details for BACS payment
• Late payment policy (optional but recommended)

Common Invoicing Mistakes

• Missing invoice numbers — HMRC requires sequential numbering. Skipped or duplicate numbers raise flags
• Not separating labour and materials — essential for CIS and for client transparency
• Vague descriptions — "building work" is not enough. Describe what was actually completed
• No payment terms stated — without clear terms, you have no contractual basis for chasing late payment
• Sending invoices late — the longer you wait to invoice, the longer you wait to be paid. Invoice immediately on completion

Using Software to Generate Construction Invoices

Invoicing software eliminates most of these mistakes automatically. TailoredQuote generates branded PDF invoices with automatic numbering, VAT calculations, and your letterhead — all from your phone in under 60 seconds. The Essentials plan starts at £35/month. See our step-by-step invoicing guide for a full walkthrough.

Frequently Asked Questions

If your business is VAT registered, yes — you must show the net amount, VAT at the applicable rate, and the gross total separately. If you are not VAT registered, state this clearly.

Under CIS, contractors deduct 20% (or 30% for unverified subcontractors) from labour payments and pay it to HMRC on your behalf. Materials are not subject to CIS deductions — always separate labour and materials on your invoice.

Standard UK payment terms are 30 days from invoice date. Shorter terms (14 days) are common for small works. The payment deadline should be stated clearly on the invoice.

Yes. Under the Late Payment of Commercial Debts Act 1998, you can charge statutory interest of 8% above the Bank of England base rate on overdue invoices between businesses. You can also claim a fixed sum for debt recovery costs.