Invoicing guides

What Is an Invoice? Meaning, Examples and What to Include
An invoice is a request for payment for goods or services. See what an invoice must include, the main types, how it differs from a receipt, and an example.

Freelance Invoice: What to Include, Examples and How to Get Paid
What to put on a freelance invoice, with examples for hourly and fixed-price work, payment terms that work, and how to invoice clients in other countries.

Contractor Invoice: How to Bill Labor, Materials and Progress Payments
What to include on a contractor or construction invoice, with an example, plus how progress billing, retainage, change orders and lien waivers work.

Overdue Invoice? Payment Reminder Emails That Get You Paid
When and how to chase an overdue invoice: a reminder schedule, six payment reminder email templates to copy, and the rules on late fees and interest.

Is There Really a Free Invoicing App? The Catches to Check Before You Sign Up
We checked the free plans of Wave, Zoho, Square, PayPal, Stripe and more: what each gives you free, what you pay when clients pay, and how to choose.