How to Invoice a Client for the First Time — Step by Step
Sending your first invoice can feel awkward — especially if you're a freelancer who just finished a great project and now has to pivot to the business side of things. The good news: it's straightforward, and doing it right the first time sets the tone for your entire client relationship.
Before You Send
A few things to confirm before creating your invoice:
- Get the right billing contact. Ask: "Who should I send the invoice to, and is there a specific email or AP portal I should use?" This question alone prevents weeks of delay.
- Confirm the billing entity name. Are you invoicing the individual, their LLC, or their parent company? Getting this wrong can create tax and payment processing problems.
- Ask about PO numbers. Many companies won't process an invoice without a purchase order number. Ask before you send, not after.
- Agree on the amount first. Never surprise a client with an invoice amount they weren't expecting. Confirm the total before sending.
The 7-Step Process
Your full name or business name, address, email, and phone number. You'll only do this once — InvoiceForge saves it to your browser automatically for future invoices.
Use the billing name and address they confirmed. If they have a specific AP email, use that instead of your main contact's email. Save them to your client list for next time.
Start at INV-0001 and increment from there. If you have multiple clients, you can prefix with client initials (e.g., TC-0001 for TechCorp). Consistency matters more than the format you choose.
Invoice date is today. Due date is typically 30 days from today (Net 30). For smaller projects or established clients, Net 15 is reasonable. Set a specific calendar date, not just "Net 30" — it removes ambiguity.
List every deliverable with a description, quantity, and rate. Be specific — instead of "Consulting — $1,500" write "Brand strategy session — 3 hours @ $500/hr." Specificity builds confidence and reduces disputes.
If you're required to charge sales tax or VAT, add it in the tax field. Include your tax registration number in the notes if required in your jurisdiction. When in doubt, consult a local accountant.
State your accepted payment methods and due date clearly. Add a brief thank-you note — it's a small touch that clients remember. Include your bank details or payment link if using ACH or direct transfer.
How to Send the Invoice
Download your invoice as a PDF and attach it to an email. Keep the email short and professional:
Subject: Invoice #INV-0001 — [Project Name] — Due [Date]
Hi [Name], please find attached Invoice #INV-0001 for [brief project description] in the amount of $[total]. Payment is due by [date]. Please let me know if you have any questions. Thank you for the opportunity to work together.
Don't overthink it. A clean, professional PDF with a brief email is more effective than a long message explaining the invoice in the body.
Pro tip: Send the invoice the same day the work is delivered or the project wraps up. The longer you wait, the longer you wait to get paid. Prompt invoicing signals professionalism.
What to Do If They Don't Pay
If the due date passes without payment:
- Day 1–3 after due date: Send a friendly reminder. Assume it was an oversight. "Just a reminder that Invoice #INV-0001 was due on [date]. Please let me know if you have any questions or need another copy."
- Day 7–10: Follow up again, slightly more direct. Ask for a payment timeline.
- Day 14–21: Phone call if possible. Mention your late fee policy if you have one.
- Day 30+: Consider sending a formal demand letter. In most jurisdictions you can also report to a collections agency or pursue in small claims court for amounts under the threshold.
See our full guide: How to Follow Up on an Unpaid Invoice.
Setting Up for Next Time
- Save your business details to the form — InvoiceForge remembers them automatically
- Save this client to your Client List so you can load their details in one click next time
- Add your standard services to the Rate Sheet so line items take seconds, not minutes
- Increment your invoice number each time — never reuse a number