Free Invoice Guides, Templates
& Examples (2026)

To be legally enforceable, an invoice must contain: a unique sequential ID, the full legal identities of both parties (including Tax IDs where applicable), a clear description of goods/services, the transaction date, payment terms, and the total amount due.

Yes. Our platform and guides are regularly audited against major regulatory frameworks, including the EU VAT Directive, US IRS record-keeping requirements, and Peppol e-invoicing standards.

International invoices should explicitly state the currency code (ISO 4217, e.g., USD, GBP). Best practice dictates including the exchange rate used if converting for local tax reporting purposes. Refer to our 'International Invoicing' guide for specific Incoterms® logic.

Generally, yes. Most tax authorities (IRS, HMRC) accept digital records provided they are immutable (PDF/A), legible, and backed up securely. Our system generates compliant PDF documents suitable for digital archiving.

The main invoice types are: Standard Invoice (basic goods/services billing), Commercial Invoice (customs documentation for exports), Proforma Invoice (pre-shipment quote), VAT Invoice (tax-compliant for EU/UK), Freelance Invoice (hourly/project billing), Contractor Invoice (labor and materials), Credit Note (refunds and adjustments), Consulting Invoice (professional services), Photography Invoice (photo sessions and licensing), Corporate Invoice (enterprise project billing), and Multi-Currency Invoice (international transactions).

For domestic sales, use a Standard Invoice. For international shipping, use a Commercial Invoice. For quotes before sale, use a Proforma Invoice. For EU/UK VAT-registered businesses, use a VAT Invoice. For hourly or project-based work, use a Freelance Invoice. For construction and labor billing, use a Contractor Invoice. For refunds or corrections, use a Credit Note. For professional services, use a Consulting Invoice. For photography work, use a Photography Invoice. For enterprise projects, use a Corporate Invoice. For multi-currency transactions, use a Multi-Currency Invoice.

Yes, all guides, templates, and invoice generators on this platform are completely free to use. No signup required. You can create, download, and use professional invoices at no cost.