Free Invoice Generator

How to Create a Professional Invoice

A professional invoice is more than a payment request — it is a legal document that records a transaction between you and your client. A well-structured invoice protects you in disputes, satisfies tax authorities, and signals to clients that you run a legitimate, organised business. Our free generator produces a clean PDF in under two minutes with no watermarks, no signup, and no limits on how many invoices you create.

What every invoice must include

A legally sufficient invoice typically contains: your full name or business name and address; the client's name and address; a unique invoice number; the invoice date and payment due date; an itemised list of products or services with quantities and unit prices; the subtotal, any applicable tax (VAT, GST, or sales tax), any discounts, and the final total; and your preferred payment method or bank details. The generator handles all of these fields automatically — totals, tax, and discounts calculate as you type.

Invoice numbering and record keeping

Use a consistent numbering scheme from the start. A common format is INV-0001, incrementing with each new invoice. Sequential numbers make it easy to spot gaps, reference invoices in client conversations, and satisfy accounting software imports. Keep a copy of every invoice you send — even a simple folder of downloaded PDFs is sufficient. Most tax authorities require you to retain invoice records for 5–7 years.

Setting payment terms that get you paid faster

Payment terms define when you expect to be paid relative to the invoice date. Net 15 means payment is due within 15 days; Net 30 is the most common standard for B2B invoicing; Due on receipt is appropriate for one-time or small-value jobs. Research consistently shows that shorter terms — Net 7 or Net 15 — result in faster payment than Net 30, partly because clients process shorter-deadline invoices with more urgency. For new clients or large projects, consider requesting a deposit upfront (typically 30–50%) with the balance due on delivery.

Tax on freelance and contractor invoices

Whether you need to charge tax depends on your location, your client's location, and the nature of the services. In the US, most service-based freelancers do not charge sales tax, but product sales may be taxable depending on the state. In the UK and EU, VAT applies once you exceed the registration threshold. Always consult a local accountant if you're unsure — the invoice generator's tax field accepts any percentage you enter, so you stay in control of what gets charged.

Following up on overdue invoices

Send a polite reminder the day the invoice becomes overdue — do not wait. A short, professional message referencing the invoice number, amount, and original due date is all that is needed. If the invoice remains unpaid after a second reminder at 7 days overdue, escalate the communication and consider pausing ongoing work until the balance is cleared. Including a late-payment clause on the invoice itself (e.g., 1.5% per month on overdue balances) is legal in most jurisdictions and gives you leverage if escalation becomes necessary.

Why browser-based invoice generation is safer

Many online invoice tools store your client names, billing addresses, and financial totals on their servers — data that is valuable to attackers and subject to their privacy policies. This generator creates your PDF entirely inside your browser using client-side JavaScript. Your business details, client information, and invoice figures never leave your device. There is no account to breach, no stored records to expose, and the tool will work indefinitely regardless of whether this service continues to exist.