How to Send Your First Invoice to a Client

Your first invoice to a client sets the tone for your financial relationship. A clear, professional invoice email builds confidence, reduces friction in the payment process, and signals that you run a serious operation. Many first-time invoicers undersell themselves by being too casual or too vague.

Original Message

Hi, here's my invoice, please pay when you can thanks.

Professional Version

Dear [Client Name],

Please find attached invoice #[number] for [amount], covering [description of work] completed on [date].

Payment details:
- Amount due: [amount]
- Due date: [date]
- Payment method: [bank transfer / PayPal / preferred method]
- Bank details: [if applicable]

If you have any questions about the invoice, please don't hesitate to reach out. Thank you for the opportunity to work together.

Best regards,
[Your Name]

Polite Version

Hi [Client Name],

Hope you're well! I'm sending over invoice #[number] for [amount] for the [project/work description] we wrapped up.

Payment is due by [date]. Please use [payment method] with the details in the attached invoice. Let me know if anything looks off or if you need it in a different format.

Really enjoyed working on this!

Best,
[Your Name]

Firm Version

Dear [Client Name],

Invoice #[number] for [amount] is attached. Payment is due by [date] via [method].

Contact me if you have questions.

Regards,
[Your Name]

When to Use This Template

  • After completing a project or hitting a billing milestone for the first time with a new client
  • When you're freelancing or consulting for the first time and sending your very first invoice
  • When you want to establish a clear, professional payment communication process
  • When you want to make it as easy as possible for the client to pay quickly

Common Mistakes to Avoid

Not including a specific due date: 'Please pay when you can' is not a payment term. Always specify a due date.
Not including payment method details in the email body: Clients shouldn't have to hunt through the attached PDF to find your bank details.
Being too casual or apologetic about billing: You've done the work and you're entitled to payment.

Frequently Asked Questions

What should an invoice number look like?

Invoice numbers can be simple sequential numbers (001, 002) or include the year and client. Consistency matters more than format.

Should I include my full bank details in the email?

For bank transfers, including account details speeds payment. Be mindful of security and consider whether to use a secure invoice link.