Invoice Generator

An invoice is a formal request for payment that documents a transaction between buyer and seller. Even simple invoices need accurate line-item math, properly applied discounts, and correct tax calculations to avoid disputes and stay compliant. This tool lets you assemble the totals quickly before transferring them into your invoicing software or PDF template.

The standard order of operations is: sum line items → apply discount → calculate tax on the discounted subtotal → add tax to get the total. This calculator follows that convention, which matches most US and EU jurisdictions. Some special cases (like flat-rate sales tax in certain Canadian provinces) apply tax differently — check local rules.

For freelancers and small businesses, common items to include on the actual invoice (not just calculations): your business name, address, and tax ID; client name and address; invoice number and date; due date; payment instructions; and a thank-you note. Number invoices sequentially for clean bookkeeping.

If you operate in multiple jurisdictions, separate the tax line by jurisdiction (e.g., state tax + city tax). For B2B sales across borders, you may need to handle reverse-charge VAT — consult an accountant when in doubt.

Clear, professional invoices get paid faster. Studies by the freelancer-payment platform Bonsai and accounting software Xero both show that invoices with itemized line descriptions, net-30 (or shorter) terms, multiple payment methods and a polite due-date reminder are paid 30–50% faster than vague or unprofessional invoices. Use this generator to build clean line items, then export to PDF for emailing to your client.

Sales tax treatment varies by jurisdiction and transaction type. In the United States, sales tax is collected at the point of sale by the seller and remitted to the state. Internationally, value-added tax (VAT) or goods and services tax (GST) follows a different model that taxes each link in the supply chain. Make sure your invoice clearly separates the pre-tax subtotal, the tax line and the total — combining them confuses customers and can create compliance problems.

Discount lines on invoices serve both pricing and customer-management functions. A line that reads "List price $1,200 — loyalty discount −$200 — total $1,000" feels more generous and memorable than a flat $1,000. It also documents the discount for accounting and future reference. Use the discount field in this generator whenever you offer a concession; do not just lower the line item, because the customer loses sight of the value they received.

Payment terms set the tone for cash flow. Net-30 is the corporate default but is often too generous for small businesses. Many freelancers and contractors use net-7 or net-14, with a 1–2% discount for payment within 7 days (the classic 2/10 net 30). Late fees of 1.5% per month are standard but should be specified in advance in your contract or master services agreement. Add a clear "due date" field on every invoice and follow up courteously the day after.