Learn invoicing basics.

Invoicing Invoice vs quote: what's the difference?

One comes before the work. One comes after. Here is what each document does.

Invoicing Net, gross, and tax: what they mean on an invoice

Net is what you charge. Tax is what you collect for the government. Gross is what the client pays. Here is how they fit together — and what the tax is called in your country.

Getting paid Payment terms: what they mean and how to set them

Net 30, due on receipt, 50% upfront. What these mean and which ones work.

Getting paid How to chase an overdue invoice

A practical follow-up sequence for late payments, from first nudge to formal notice.

Invoicing What is a credit note and when do you need one?

How to correct a sent invoice properly without touching the original.

Invoicing Invoice numbering: why it matters

Sequential unique invoice numbers protect your records and make audits less painful.