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How to Create a Simple Invoice in the UK

Eric Jul 09, 2026 2026-07-09 04:40:47

Creating an invoice in the UK might seem daunting, but it's a straightforward process once you understand the basics. An invoice is a formal document used to request payment for goods or services provided. It's crucial for maintaining accurate financial records and ensuring timely payments. Here's a simple step-by-step guide to help you write a professional invoice in the UK.

How to Make an Invoice: Step-by-Step Guide (& Free Templates)
How to Make an Invoice: Step-by-Step Guide (& Free Templates)

Before we dive into the details, let's briefly discuss when you might need an invoice. In the UK, you typically need an invoice when you're self-employed, running a small business, or providing services to other businesses or individuals. It's also useful for tracking your expenses and claiming back VAT if you're registered for VAT.

Free Invoice Template  | Download for free
Free Invoice Template | Download for free

Understanding the Basics of an Invoice

An invoice is a legal document, so it's important to include the right information. It should clearly state what you're charging for, how much you're charging, and your payment terms. Here are the key elements of an invoice:

How to create professional invoice for freelance work
How to create professional invoice for freelance work

1. **Header Information**: This includes your business name, address, and contact details. If you're VAT registered, you should also include your VAT registration number.

Invoice Format

A Simple Guide On How To Write An Invoice For Services
A Simple Guide On How To Write An Invoice For Services

Invoices can be created using accounting software, spreadsheet programs like Excel, or even word processing software like Microsoft Word. You can also use online invoice generators or apps. The format isn't crucial, as long as it's clear and easy to understand.

However, it's important to note that HMRC has specific rules about what must be included on an invoice. If you're VAT registered, you'll need to include certain information to ensure your invoice is valid for VAT purposes.

Invoice Numbering

Small Business Invoice
Small Business Invoice

It's a good practice to number your invoices sequentially. This makes it easier to keep track of them and ensures you don't miss any payments. You can start your numbering from 1 each year, or you might prefer to use a continuous numbering system.

If you're using accounting software, it will often generate invoice numbers automatically. If you're creating invoices manually, you might want to use a simple system like 'INV-YYYY-NN', where 'YYYY' is the year and 'NN' is the invoice number.

What to Include on Your Invoice

Simple Invoice Template 2026
Simple Invoice Template 2026

Now that we've covered the basics, let's look at what you need to include on your invoice.

1. **Your Details**: Include your business name, address, and contact details. If you're VAT registered, you should also include your VAT registration number.

How to write an invoice
How to write an invoice
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Never Late Payments Again: Ultimate Invoice Email Sample
Ace Freelance Invoicing: Free Templates Included
Ace Freelance Invoicing: Free Templates Included
Minimalist Invoice Template — Simple and Professional
Minimalist Invoice Template — Simple and Professional
Free Invoice Template -  How To Create an Invoice Using Google Docs Invoice Template
Free Invoice Template - How To Create an Invoice Using Google Docs Invoice Template
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How to Create and Send an Invoice for Your Online Business
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Simple Printable Invoice - Etsy
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Editable UK Service Invoice Template - Canva, A4 Printable (PDF Download)
Druckbare einfache minimalistische Geschäftsrechnung
Druckbare einfache minimalistische Geschäftsrechnung
30 Editable Canva Invoice Templates for a Clean Freelancer Desk Billing Success
30 Editable Canva Invoice Templates for a Clean Freelancer Desk Billing Success
PDF - Invoice Simple
PDF - Invoice Simple
an invoice form is shown with the word invoice written on it
an invoice form is shown with the word invoice written on it
Simple Invoice Template UK | Effortless Starts for Small Business Owners
Simple Invoice Template UK | Effortless Starts for Small Business Owners
an invoice form is shown with the company's name and address on it
an invoice form is shown with the company's name and address on it
Basic Formal Invoice
Basic Formal Invoice
an invoice is shown on top of a piece of paper
an invoice is shown on top of a piece of paper
Invoice
Invoice
Editable Invoice Template | Hourly Rate | Canva | Small Business & Freelancer
Editable Invoice Template | Hourly Rate | Canva | Small Business & Freelancer
How to send an invoice
How to send an invoice

Your Client's Details

Include the name and address of the person or business you're invoicing. If you're VAT registered, you'll also need to include their VAT registration number if they have one.

If you're invoicing a limited company, you should include the company registration number and the full company name, including the word 'Limited' (or 'Ltd').

Invoice Date and Due Date

The invoice date is the date you're creating the invoice. The due date is the date when you expect to receive payment. You can set your payment terms to suit your business, but common terms include '30 days from date of invoice' or 'net 30'.

If you're VAT registered, the tax point is the date when the VAT becomes due. This is usually the same as the invoice date, but it can be different in certain circumstances.

Invoice Description

The invoice description should clearly state what you're charging for. This could be a description of the goods or services provided, or a reference to a contract or agreement. If you're charging for multiple items or services, you can list them out with their individual prices.

If you're VAT registered, you'll need to include the rate of VAT for each item or service. You can use the standard rate (currently 20%), the reduced rate (5% or 0%), or the zero rate (0%) depending on what applies.

Total Amount Due

The total amount due is the final figure you're charging. If you're VAT registered, this will include VAT. Make sure to clearly state whether your prices are inclusive or exclusive of VAT.

You might also want to include a breakdown of how you've calculated the total amount due. This could include the subtotal, the VAT amount, and any discounts or late payment fees.

Additional Information to Include

Depending on your business and your client, you might need to include additional information on your invoice.

1. **Payment Terms**: If you haven't already included them, you can add your payment terms here. This could include your bank details, your preferred payment method (e.g., bank transfer, cheque, PayPal), and any late payment fees.

Reminder Chaser

A reminder chaser is a polite reminder to pay your invoice on time. You can include this on your invoice or send it separately. It's a good idea to include a reminder chaser if you're not sure when your client will pay your invoice.

Here's an example of a reminder chaser: "Please note that payment is due within 30 days of the invoice date. If you have any queries regarding this invoice, please don't hesitate to contact us."

Your Bank Details

If you want your client to pay by bank transfer, you'll need to include your bank details on your invoice. This could include your bank name, your account number, and your sort code. You might also want to include your IBAN and SWIFT codes if you're doing international business.

Finally, remember to keep a record of all your invoices. This is important for your financial records and for claiming back VAT if you're VAT registered. You should keep your invoices for at least six years, in case HMRC wants to inspect them.

Writing an invoice might seem like a daunting task, but it's a crucial part of running a business. By following this guide, you can create professional invoices that will help you get paid on time. Happy invoicing!