Finance and accounting

A unique, consistent invoice number is vital for clear accounting and audit readiness. Learn how to set up your numbering properly, avoid common mistakes, and ensure your invoices meet US business standards.

Learn how to issue invoices correctly in the U.S. Understand which details every invoice must include, when to send it, common mistakes to avoid, and why online invoicing saves time and improves compliance.

Invoicing and taxes go hand in hand. Learn how proper invoicing impacts your tax returns, why it pays to keep your records organized, and how modern tools can help you avoid errors and penalties.

Issuing an invoice may seem routine, but small mistakes or missing details are among the most common reasons clients delay payments — or why you might run into trouble with the IRS.