GuidesLast updated July 25, 2026
Invoicing, in plain English
Everything you need to invoice properly as a freelancer or small business — required fields, payment terms, emails that get paid, and worked examples. Answer-first, no fluff.
How to invoice a client
The seven required fields, numbering, terms, and the follow-up schedule.
How to make an invoice
Every method compared — forwarding, calculator, templates, suites.
How to automate invoices
Suites vs. Zapier chains vs. email-forwarding, honestly compared.
Generate an invoice
Three ways to generate one, ranked by where your data lives.
AI invoice generation
What AI actually does well in invoicing — and what it can't do alone.
What is a proforma invoice?
A proforma invoice is a quote formatted like an invoice
How to invoice as a contractor
What a contractor invoice must include to get paid on time
Invoice terms and conditions
The terms worth putting on an invoice
What does net 30 mean?
Net 30 means the full invoice amount is due 30 days after the invoice date
Invoice vs. receipt: what's the difference?
An invoice requests payment before money moves; a receipt proves payment after
The invoice email: what to write
Copy-paste invoice email templates: the first send, the +7-day reminder, and the +14-day follow-up
A complete freelance invoice, annotated
A realistic freelance invoice example