Free Invoice Generator UK | WDI Billing

Free Invoice Generator

Need to send an invoice right now? Our free invoice generator lets you create a professional, correctly formatted UK invoice in a couple of minutes - no spreadsheet wrangling, no design skills, and no obligation to sign up for anything. Fill in your details, add your line items, and download a clean PDF you can email straight to your client.

It's built for sole traders, freelancers, contractors and small limited companies who want an invoice that looks right and includes everything HMRC and your clients expect - without paying for full accounting software just to send one bill.

How the free invoice generator works

  1. Add your business details. Your name or company name, address, and contact details.
  2. Add your client's details. Who the invoice is addressed to.
  3. List your items or services. Description, quantity, unit price - the totals calculate automatically.
  4. Add VAT if you're registered. The generator handles the VAT line and your VAT number if applicable.
  5. Download or send. Get a clean PDF instantly, ready to email or print.

Every invoice includes the fields UK clients and HMRC expect: a unique invoice number, invoice date, payment terms, and a clear total. You can reuse your details for the next invoice, so it gets faster every time.

A UK invoice doesn't need to be complicated, but a few details are non-negotiable if you want to get paid without a query: your business name and address, your client's name and address, a unique invoice number that doesn't repeat, the invoice date, a description of the goods or services provided, and the total amount due. If you're VAT-registered, you'll also need your VAT registration number and the VAT rate applied to each line, plus the total VAT charged. The free invoice generator adds all of this automatically once you've filled in your business profile, so you're not relying on memory to keep it consistent invoice after invoice.

Why use a proper invoice generator instead of a Word template

A generic Word or Excel invoice template is fine until you need to edit it for the tenth time, fix a broken formula, or explain to a client why the numbers don't add up. A dedicated generator removes the manual maths, keeps your invoice numbering sequential, and gives every invoice a consistent, professional look - which matters when you're trying to get paid on time. Most businesses settle on a simple sequential format such as INV-0001, INV-0002 and so on - the generator keeps track so you never accidentally reuse a number or leave a gap that looks odd to an accountant later.

It also means your invoice data doesn't just disappear into a folder of one-off documents. When you're ready for more than occasional invoicing, the same data can carry straight into full invoicing software without starting from scratch.

Free now, no pressure to upgrade

You can use the generator to create and download invoices without committing to anything. That's deliberate. We'd rather you try WDI Billing on a real invoice than read a features list. If you decide later that you want recurring invoices, automatic payment reminders, expense tracking, or Making Tax Digital-ready bookkeeping, everything you've already created is ready to grow with you - your data stays yours either way.

That's the same principle behind everything we build: your books stay yours. Nothing you create here gets pushed anywhere automatically - you're always the one who presses send.

Need something more permanent?

If you're invoicing regularly, a one-off generator will eventually feel limiting - no client history, no automatic numbering across months, no reminders when a payment is late. That's where our full invoicing software UK comes in: recurring invoices, saved clients, payment tracking, and a bookkeeping layer underneath if you want it.

Prefer to start from a ready-made layout instead of a form? Browse our invoice templates UK, including a dedicated sole trader invoice template, and fill in the blanks yourself.

Who this free invoice generator is for

  • Sole traders and freelancers sending occasional invoices to clients.
  • Contractors who need a quick, professional invoice between jobs.
  • New businesses testing the waters before choosing full accounting software.
  • Anyone comparing tools who wants to see how WDI Billing handles an invoice before signing up.

If your invoicing needs are outgrowing a one-off tool - more clients, VAT to manage, or Making Tax Digital obligations on the horizon - our Making Tax Digital software and full accounting software UK pick up exactly where the generator leaves off.

Try WDI Billing free

Create your first invoice with the free generator today, then explore the rest of WDI Billing when you're ready - clean bookkeeping, MTD-ready filing on your terms, and a pricing page with no per-invoice fees. See our pricing or head back to the WDI Billing UK hub to see everything on offer, and start your free trial whenever you're ready.