Invoicing Basics

What to Include on an Invoice: Complete Checklist (2026)

11 min read

Creating a professional invoice isn't just about asking for payment—it's a legal document that must include specific information to be valid. Missing required fields can delay payment, cause accounting issues, or even invalidate your invoice for tax purposes. This comprehensive guide covers everything you must, should, and can include on an invoice in 2026.

Complete Invoice Checklist

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Essential Invoice Elements

Every invoice must include: invoice number, date, your business information, client information, description of services, amounts, due date, and payment instructions.

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PrestoBills automatically includes all essential invoice fields, handles calculations, and ensures compliance. Create perfect invoices in 2 minutes.