A clear invoice gets paid faster and causes fewer “quick question about this” emails. This checklist covers what a freelance invoice should include, in the order most clients read it, plus a sample invoice you can copy.

Free tools for the numbers: invoice late fee & payment terms calculator, freelance hourly rate calculator and quarterly estimated tax calculator.

The checklist

  1. Your business name and contact details. Your name or business name, address, email and phone. If you have a business or tax registration number that your clients or local rules expect to see, add it here.
  2. Client details. The client’s company name, the contact person (or accounts payable team) and their billing address. Use the exact legal or billing name the client gives you, so the invoice matches their records.
  3. A unique invoice number. Never reuse a number. A simple sequence such as 2026-014 keeps your records in order and lets both sides refer to one specific invoice.
  4. Issue date and due date. Show both. “Due on receipt” is vague; a real date (for example “Due: 2026-11-19”) removes any doubt about when payment is late.
  5. Payment terms. State them in plain words, such as Net 15 or Net 30 (payment due 15 or 30 days after the invoice date). If you offer an early-payment discount like 2/10 Net 30 (2% off if paid within 10 days, otherwise the full amount in 30), spell out both the discounted amount and the deadline.
  6. Itemized line items. One line per service or deliverable, with a short description, quantity (hours, days or units), rate and line amount. Itemizing makes it easy for the client to approve and hard to dispute.
  7. Subtotal. The sum of the line items before tax and discounts.
  8. Tax lines, where applicable. If you are required to charge sales tax, VAT, GST or another tax on your services, show each tax on its own line with its rate. Whether tax applies depends on where you and your client are and what you sell, so check your local rules or ask an accountant.
  9. Total due. The single number the client should pay, in bold, with the currency (USD, EUR and so on), especially for international clients.
  10. Accepted payment methods. Bank transfer details, payment link, card, check: whatever you accept, with everything the client needs to pay without asking you.
  11. Late-fee terms, if you use them. If your contract allows a late fee or interest, state it on the invoice too (for example “1.5% per month on balances past due”). Legal limits vary: many places cap interest or fees or only allow them if the client agreed in advance, so check the rules that apply to you before setting a rate.
  12. Notes and PO number. Add the client’s purchase order (PO) number if they gave you one; many accounts payable teams can’t pay an invoice without it. A short project reference and a thank-you line also help.

Sample invoice

Example data only: names, numbers and terms are made up for illustration.

From: Alex Rivera Design, 123 Example St, Springfield, alex@example.com
Bill to: Example Co., Attn: Accounts Payable, 456 Sample Ave, Springfield
Invoice #: 2026-014   PO #: PO-7781
Issue date: 2026-10-20   Due date: 2026-11-19 (Net 30)

Description Qty Rate Amount
Website design, homepage and 3 inner pages (hours) 20 $75.00 $1,500.00
Copywriting, service pages (hours) 5 $60.00 $300.00
Stock photo licenses 2 $15.00 $30.00
Subtotal     $1,830.00
Tax (not applicable in this example)     $0.00
Total due (USD)     $1,830.00

Payment terms: 2/10 Net 30. Pay $1,793.40 (2% off) by 2026-10-30, or $1,830.00 by 2026-11-19.
Payment methods: bank transfer (details below) or the card payment link in this email.
Late payments: as agreed in our contract, 1.5% per month on balances past due.
Notes: Project: Example Co. website refresh. Thank you for your business!

Want to see what skipping a 2/10 Net 30 discount really costs, or how much a late fee adds up to? Try the invoice late fee & payment terms calculator.

Tips that get invoices paid faster

  • Send it the day the work is done (or on the agreed billing date), not weeks later.
  • Confirm who pays before the first invoice: the right email for accounts payable, any PO number, and any vendor forms they need.
  • Keep the line items matched to the quote or contract, so the approver can tick them off.
  • Follow up on the due date, politely, with the invoice number and amount in the subject line.
  • Track every invoice (sent, due, paid, overdue) in one place so nothing slips.

Track invoices and clients

The Freelancer Invoice & Client Tracker (Excel and Google Sheets) works out invoice due dates from your payment terms, flags overdue invoices on its own, logs hours at each client’s rate, and shows invoiced vs. paid by month. To plan the tax side for the whole year, the Freelancer Quarterly Tax Planner 2026 (Excel and Google Sheets, $9) logs each payment and expense, works out the share of every dollar to set aside, the safe-harbor and full quarterly payments, and tracks what you’ve paid against the 2026 due dates.

Disclosure: the Freelancer Invoice & Client Tracker and the Freelancer Quarterly Tax Planner 2026 are our own paid products, and we earn the sale price if you buy one.

More tools and guides: all guides and free tools. Not legal or tax advice.