Invoice Maker

4 professional templates · logo upload · 9 currencies · PDF download · auto-saves in your browser

How it works

Enter your details, your client’s details, and your line items. The preview updates on every keystroke.

Pick a template. Modern uses a purple accent and clean sans-serif. Classic is a traditional bordered layout in serif. Minimal strips out decoration for maximum legibility. Bold leads with a dark header. Switching between them keeps all your data.

Add your logo, choose where it sits, and set an accent colour to match your brand. Both apply across every template instantly.

Then click Download PDF. Your browser’s print dialog opens, and choosing “Save as PDF” gives you the finished file, named after the invoice number.

What an invoice needs to be valid

An invoice is a legal document, not just a letter asking for money. Leave things off and a client’s accounts department can reject it, which restarts your payment clock.

The essentials, near enough everywhere:

• The word “Invoice”, so it is not mistaken for a quote or a statement
• A unique invoice number
• The date you issued it
• Your business name, address and contact details
• Your client’s name and address
• A clear description of what you supplied
• The amount due, and the currency
• The payment due date and how to pay

If you are VAT registered, the requirements go further. You need your VAT number, the tax point date, the rate applied, the net amount, the VAT amount, and the gross total shown separately. A client cannot reclaim VAT on an invoice that omits these, which is why they get sent back.

Invoice numbers must be sequential

This one catches sole traders and freelancers constantly.

Your invoice numbers need to be unique and run in an unbroken sequence. Not random, not restarting per client, not skipping numbers you decided you did not like. Tax authorities including HMRC treat gaps in the sequence as a reason to look harder, because a missing number looks like an invoice you did not declare.

If you cancel an invoice, do not delete it and reuse the number. Issue a credit note against it and carry on with the next number in the run.

A prefix per year or per client is fine, as long as each series is itself unbroken. 2026-001, 2026-002 works. So does ACME-014. What does not work is inventing numbers as you go.

You are allowed to charge for late payment

Most freelancers never do this, and in the UK it is a statutory right rather than something you have to negotiate.

Under the Late Payment of Commercial Debts (Interest) Act 1998, a business invoicing another business or a public authority can charge interest at the Bank of England base rate plus 8 percentage points. With the base rate at 3.75% in June 2026, that puts statutory interest at 11.75% a year.

The reference rate is fixed twice a year rather than tracking daily. Debts falling late between January and June use the base rate as it stood on 31 December. Debts falling late between July and December use the rate from 30 June. Whatever the Bank does mid-period changes nothing.

There is fixed compensation on top, scaled to the debt. £40 for invoices under £1,000. £70 up to £9,999.99. £100 from £10,000 upward. And if chasing the money cost you more than that fixed sum, reasonable recovery costs can be claimed as well.

You do not have to mention any of this on the invoice for the right to exist. Stating your payment terms clearly still helps, because it removes the argument about when the clock started.

Payment terms that actually get paid

“Net 30” is convention rather than law, and it is worth asking whether it suits you.

Shorter terms tend to get paid sooner, simply because the invoice enters the payment run earlier. Net 14 is entirely normal for small suppliers, and “due on receipt” is common for one-off work.

Whatever you choose, put an actual date on it. “Payment due 14 September 2026” leaves nothing to interpret, while “Net 30” requires the reader to know what date you issued it and to do arithmetic they have no reason to bother with.

Give bank details on the invoice itself rather than in the covering email. The invoice is the document that gets forwarded to accounts. The email usually does not.

Frequently asked questions

Related: work out VAT · sales tax and GST · convert a currency.