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Invoices 5 min read

What Should an Invoice Include?

A complete checklist of everything your UK invoice must include to be legally compliant and get paid on time.

MileageCalendar Team Published 15 November 2025 Updated 30 March 2026

Required information

Every UK invoice must include: your business name and address, the customer's name and address, a unique invoice number, the invoice date, a description of the goods or services, the amount being charged, and the payment due date.

If you are a limited company, you must also include your company registration number and registered office address.

VAT invoice requirements

If you are VAT-registered, your invoice must also include your VAT registration number, the VAT rate applied to each line item, the total VAT charged and the total amount including VAT.

For invoices under a certain amount, you can issue a simplified VAT invoice, but most businesses issue full VAT invoices for all transactions.

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Frequently Asked Questions