A free online invoice generator lets you create professional invoices directly in your browser without any software, account, or subscription. Enter your business details, client information, line items, and tax rate, then print the invoice or save it as a PDF using your browser's built-in print function. Everything runs locally — nothing is sent to a server or stored anywhere.

How to use this Invoice Generator

1. 1Enter your business name, email, and address in the "From" section.
2. 2Enter your client's name, email, and address in the "Bill To" section.
3. 3Set the invoice number, issue date, and due date.
4. 4Add line items — description, quantity, and rate for each. Click "+ Add line item" for more rows.
5. 5Set a tax rate if applicable, add any payment notes, then click "Print / Save as PDF" to download.

What makes a valid professional invoice?

Tips and things to know

• ✓Add your bank details or PayPal email in the Notes field so clients know exactly how to pay.
• ✓For UK/EU VAT invoices, include your VAT registration number in the "From" address field.
• ✓Use the notes field for late payment policies: "Invoices unpaid after 30 days incur a 2% monthly late fee."
• ✓Keep a copy of each invoice by printing two PDFs — one to send the client, one for your records.
• ✓Number invoices sequentially from the start of each year (2026-001, 2026-002) to make tax filing easier.

Invoice Generator — bottom line

Professional invoicing is the foundation of healthy cash flow for any freelance or small business. The most consequential invoicing decision is not the format — it is the payment terms and the follow-up process. Net 30 is standard, but many businesses that switch to Net 15 on new client relationships find acceptance is higher than expected, particularly from clients who prioritize vendor relationships. The most common cash flow mistake is treating invoicing as an afterthought: sending invoices days or weeks after work is completed, without a consistent follow-up system for unpaid invoices. Every week an invoice sits unpaid past the due date without a follow-up email is an unnecessary interest-free credit extension to the client. Set a simple system: a reminder email 3 days before the due date ("just a reminder that invoice INV-042 is due on Friday"), a follow-up on the due date if unpaid, and a polite follow-up every 5–7 days after. Second mistake: not including all required payment information on the invoice itself. The invoice should include every detail the client needs to pay — bank account and routing number, PayPal or payment platform link — in the notes field. Requiring the client to email and ask how to pay introduces friction that delays payment. Third: sending invoices as embedded email text rather than PDF attachments. A PDF is a professional, archival document that clients can forward to their accounts payable team, store in their records system, and reference by invoice number — plain text in the body of an email is none of these things.

Official resources and further reading