Free Invoice Generator Online

More about this tool

How to use

1. Enter your business details and the invoice number, issue date, and payment terms.
2. Add the client details so the document identifies who is being billed.
3. List each product or service with a description, quantity, and unit price. Add discounts or tax when they apply to your work.
4. Review the subtotal and final total, then include any notes or payment instructions the client needs.
5. Download or print the invoice. Save it in your browser if you want to return to it later.

Worked example

A freelance designer bills 8 hours of design work at $65 per hour. The service subtotal is $520. If a 10% discount is agreed, the discounted amount is $468 before any applicable tax. The freelancer enters the service as a line item, adds the discount and the correct tax treatment for their situation, then checks that the displayed total matches the amount agreed with the client. Tax rules vary by location, so the example is arithmetic only, not tax advice.

Create an invoice that is easy to review

A useful invoice answers a few practical questions without making a client search for details: who sent it, who should pay it, what work was completed, when payment is due, and how the total was calculated. Start with your business name and contact details, then identify the customer and assign a distinct invoice number. Adding an issue date and due date gives both sides a clear reference for follow-up and record keeping.

The line-item table is where the work becomes specific. Describe each service or product in language your client will recognize, and include its quantity and unit price. For hourly work, the quantity can represent hours; for a fixed project, use a clear project or milestone description. Separate line items make the subtotal easier to audit and help prevent a vague single figure from causing questions later.

Before sending the document, compare its contents with the agreement or completed work. Check spelling in the client details, confirm that quantities and prices are correct, and review discounts and tax fields. The tool calculates the amounts shown by the entries you provide, but it cannot determine which tax rate or treatment applies to your business. Confirm local requirements with an appropriate professional when you are unsure.

Make repeat billing more consistent

For recurring work, a repeatable process can save time. Keep descriptions consistent, use clear payment terms, and send the invoice soon after the agreed milestone. If you bill for common services, the product library can help reuse names and prices rather than retyping them. Review saved entries before using them because rates, scope, and client agreements can change.

FastInvoice.dev lets you prepare invoices and quotes in the browser without creating an account. Saved documents and products stay in your browser storage, so they are available on that browser and device rather than in an online account. You can export a PDF for sharing and use the app’s backup controls to export data yourself. A browser reset or cleared site storage may remove locally saved records, so keep any external copies you need.

A polished invoice is not just a design choice; it is a compact record of the work and the payment request. Use concise descriptions, show the calculation clearly, and make the next step obvious to the client. These habits do not guarantee a particular payment date, but they give both parties a document they can understand and reference.

Frequently asked questions

Related tools and guides

• Quote generator
• Freelance invoicing guide
• VAT invoice guide