Invoice Generator

Create professional, client-ready PDF invoices entirely in your browser without any software installation, account registration, or data transmission. This tool is designed for South African freelancers, sole proprietors, small businesses, and consultants who need to generate polished invoices quickly and get paid faster. Every aspect of the invoice — from layout to calculations — is handled automatically so you can focus on your work rather than administrative formatting.

**Complete Invoice Features**

Enter your full business details (company name, registration number, VAT number, address, contact information), client details, and up to multiple line items with descriptions, quantities, and unit prices. The tool automatically calculates line totals, subtotal, tax amount, discount amount, and the grand total. Add a discount as a flat amount or percentage, apply tax at any rate (15% for South African VAT, or custom rates for other jurisdictions), and include payment terms and notes at the bottom of the invoice.

**Tax and Discount Handling**

Tax is calculated on the subtotal after any discount is applied. The formula chain is:

Line Total = Quantity × Unit Price Subtotal = Sum of all Line Totals Discounted Subtotal = Subtotal - Discount Tax Amount = Discounted Subtotal × (Tax Rate / 100) Grand Total = Discounted Subtotal + Tax Amount

For example, a freelance web developer in Stellenbosch invoicing R25,000 for website development with a 10% client discount and 15% VAT: Subtotal = R25,000, Discount = R2,500, Discounted Subtotal = R22,500, VAT = R3,375, Grand Total = R25,875.

**South African Invoice Compliance**

While this tool is not a substitute for formal accounting software, it supports the key requirements for South African tax invoices. For VAT-registered businesses, the invoice includes fields for your VAT registration number and clearly separates the VAT amount from the taxable total. Under the VAT Act (Act 89 of 1991), a valid tax invoice must include: the words "tax invoice" in a prominent place, the name and registration number of the supplier, the name and address of the recipient, the VAT number of the supplier, an individual serialised number and date, a description of the goods or services, and the VAT charged. This tool accommodates all these fields.

**Multiple Currency Support**

While optimised for South African Rand (ZAR), the tool supports multiple currencies including USD, EUR, GBP, and JPY. This is useful for South African freelancers working with international clients — you can invoice in the client's preferred currency while maintaining your records in ZAR. Exchange rate conversion is not built in, so use the prevailing rate at the time of invoicing.

**Privacy and Data Security**

All data processing and PDF generation happens entirely in your browser using the pdf-lib library. No invoice data, business details, client information, or financial figures are transmitted to any server. Your sender details can optionally be saved in your browser's local storage for convenience — this data never leaves your device and is not accessible to any website or third party. The generated PDF is downloaded directly to your computer without passing through any intermediary.

**Workflow Integration**

The invoice number auto-increments after each PDF generation, stored in your browser's local storage. This creates a sequential numbering system that satisfies SARS requirements for unique, sequential invoice numbers. Your saved sender details persist between sessions, so you only need to enter your business information once. For repeat clients, simply update the line items and dates for each new invoice. Pair this tool with the Invoice Number Generator for batch number generation and the VAT Calculator for pre-invoice tax calculations.