UK Invoice Generator
Create professional, legally-compliant UK invoices in seconds. Free PDF download. No signup. Your business details are saved in your browser for next time.
Tax year 2026/27· Works for sole traders, limited companies, and VAT-registered businesses
Your business details
Saved in this browser so you only need to enter once. Not sent anywhere else.
Payment details
Client details
Invoice details
Line items
Preview
Quick preview of how the PDF will look.
INVOICE
#INV-202604-511
Issued: 16/04/2026
Due: 16/05/2026
From
Your business
Bill to
Client
| Description | Qty | Rate | Amount |
|---|---|---|---|
| — | 1 | £0 | £0 |
Payment terms
Payment due within 30 days of invoice date. Late payment interest charged at 8% above Bank of England base rate (Late Payment of Commercial Debts Act 1998).
Save your results
Email yourself a copy of these calculations to refer back to later.
How this works
- Your business details are saved in your browser only — never uploaded to our servers.
- PDFs are generated entirely client-side. No invoice data leaves your device unless you click “Email me”.
- Follows UK legal requirements for invoices: unique number, dates, parties, amounts, VAT details (if registered).
- Default payment terms cite the Late Payment of Commercial Debts Act 1998, which lets you charge 8% above base rate on late payments.
- VAT invoices require your VAT registration number to be legally valid.
- Tax year 2026/27 · Always consult an accountant for advice specific to your situation.
How to Create a Proper UK Invoice
A UK invoice isn't just a request for payment — it's a legal document that needs specific information. Getting it wrong can cause disputes, delay payment, and create problems at tax time. This guide covers exactly what your invoice must contain and the rules that apply.
What every UK invoice must include
- Unique invoice number — sequential, never repeated
- Issue date — the date the invoice is created
- Supplier details — your name and address
- Customer details — client name and address
- Description — clear description of the goods or services
- Amount — the total due
Extra requirements for limited companies
Limited companies must also include their company registration number and registered office address. These should appear on all business correspondence, including invoices. Failure to do so is a breach of the Companies Act 2006.
Extra requirements for VAT-registered businesses
If you're registered for VAT, your invoice becomes a VAT invoice and must include additional details:
- Your VAT registration number
- The VAT rate applied (usually 20% standard rate)
- The VAT amount in pounds sterling
- The subtotal before VAT, plus the total including VAT
- Time of supply (tax point) if different from the invoice date
Payment terms and late payment
Your invoice should state when payment is due. The UK default is 30 days unless otherwise agreed. If a client pays late on a business-to-business invoice, you have the right to charge statutory interest at 8% above the Bank of England base rate, plus a fixed compensation fee — this is set out in the Late Payment of Commercial Debts (Interest) Act 1998.
How long to keep invoices
HMRC requires you to keep copies of all invoices you issue and receive for at least 5 years after the 31 January tax return submission deadline. VAT-registered businesses must keep invoices for 6 years. Digital copies are fine — you don't need to keep paper originals.
Privacy: your data stays on your device
Unlike most online invoice tools, this generator runs entirely in your browser. Your business details are saved in your browser's local storage — not on our servers — so you don't need to re-enter them next time. The PDF is generated locally on your device. Nothing is uploaded unless you explicitly click “email me a copy”.