Free Invoice Generator (PDF, No Sign-Up)

How to make an invoice

1. Fill in your business details, add a logo if you like, and enter who you are billing.
2. Check the invoice number and dates. Payment terms set the due date: Net 30 means 30 days after the issue date.
3. Add a line for each product or service with its quantity and rate. Use a negative quantity for a refund or credit.
4. Add a discount, shipping, one or more taxes, and any amount already paid.
5. Press Download PDF and choose Save as PDF in the print dialog. Press Save invoice file as well, to keep a copy you can open and edit later.

The preview updates as you type and is exactly what goes into the PDF.

How the totals are calculated

Money is counted in whole minor units (cents, pence, fils), never in floating-point numbers, so the rounding errors that make some tools show 1.005 × 1 as 1.00 cannot happen here. Type amounts without thousands separators, using a point or comma for decimals. A number such as 1,234 that could mean either is refused rather than guessed.

• Each line is quantity × rate, rounded to the currency’s smallest unit. A half rounds away from zero, so 49.995 becomes 50.00.
• Subtotal is the sum of the lines.
• Discount is a percentage of the subtotal, rounded once, or a fixed amount.
• Each tax is its rate times the subtotal after the discount, plus shipping when Charge tax on shipping is ticked. It is rounded once on that total rather than line by line.
• Total is subtotal − discount + shipping + taxes, and balance due is the total minus the amount paid.

The number of decimals follows the currency. It comes from the currency data built into your browser, which matches ISO 4217 except for a few currencies whose minor unit is rarely used, such as the Iraqi and Serbian dinars, which get no decimals:

A rate may have more decimals than the currency, such as 0.0125 per unit; the line amount is still rounded to the currency.

Why the PDF comes from the print dialog

The PDF is made by your browser’s own print engine. It uses the fonts on your device, so names and descriptions in any script, including Chinese, Arabic, Hindi and Cyrillic, are shaped correctly, the text stays selectable and searchable, and the file stays small. A JavaScript PDF library such as pdf-lib needs a font file embedded for every script and does no text shaping, so Arabic letters would not join and Hindi would come out garbled. In the dialog, pick Save as PDF in Chrome, Edge or on Android, Save to PDF in Firefox, or open the PDF menu and choose Save as PDF in Safari on a Mac.

Saving and reusing invoices

Nothing is kept in your browser, so save the invoice file (a small .json file) with your records. Opening it restores every field, including the logo. Next invoice keeps your business details, logo, currency, taxes, notes and terms, clears the client and items, and increases the number, so INV-0009 becomes INV-0010.

What to put on an invoice

Most tax authorities expect a unique, sequential invoice number, the issue date, your name and address, the customer’s name and address, a description, quantity and price for each item, and the tax rate and tax amount. In the EU and the UK, a VAT invoice must also show your VAT registration number, so put it in the Tax ID field. Rules differ between countries, so check what yours requires.