How to create an invoice (step by step)

An invoice is a request for payment that records what you supplied, when, to whom and for how much. Creating one well is less about design and more about completeness: the details that make an invoice easy to approve are the same details that make it easy to get paid.

1. Start with the two parties

Put your name or business name and full address at the top, and your customer's name and billing address in their own block. If you are registered for tax in your country, include the registration number your customer needs to claim a deduction — that single line is the most common reason an invoice gets bounced back.

2. Give it a number and a date

Every invoice needs a unique number and an issue date. The number is how you and your customer refer to the transaction later, especially if a payment arrives without a reference. Add a due date too, so nobody has to guess when payment is expected.

3. Describe each line item clearly

Use plain language that a finance person can understand without calling you. “Brand identity design — discovery, concepts and final artwork” beats “Design work”. Set the quantity and unit price, add a discount only if you actually gave one, and let the line total calculate itself.

• Description — what was delivered
• Quantity and unit — hours, days, pages, items
• Unit price — the rate before tax
• Tax — the rate that applies to that line
• Line total — quantity × price, minus discount, plus tax

4. Show tax separately

Whether your prices include tax or add it on top, print the tax as its own line with the rate and amount. If different lines carry different rates — reduced rate food versus standard rate services, for example — show each rate separately rather than one blended figure.

5. Add payment details and terms

List exactly how you want to be paid: bank transfer details, IBAN, wallet handle — whatever your customer actually uses. Repeat the invoice number as the payment reference. Then state the terms: due date or payment window, accepted methods, and any late fee you intend to charge.

6. Send it where it will be processed

PDF by email is the universal default. Some larger customers want a structured e-invoice, and some countries require an approved electronic format for tax purposes — check what your customer expects before the first invoice, not after it is overdue.

Common mistakes to avoid

• Missing tax registration number or invoice number
• Vague descriptions that invite a dispute
• No due date, so the invoice sits in a queue
• Sending it to an individual instead of the accounts payable address
• Forgetting to attach timesheets or receipts the customer asked for

Use a consistent template and the whole process takes a couple of minutes. Once your details and payment terms are saved, next month you change the numbers and send.