- Open Invoices and click New invoice. The first one comes with sample lines so you see how it looks; replace them with your own.
- Pick a customer or add a new one right from the field. Their address, payment terms and invoice language fill in on their own.
- Add your items: title, quantity, unit price and, if needed, a VAT rate per line. Totals and VAT are calculated for you.
- Check the preview on the right. A note lists anything an invoice must contain in your country that is still missing.
- Click Finalise. The invoice gets its number and is locked (see Finalising). Then Download PDF or Send it by email.
Tip: set your company details once in Settings → Invoice settings and every new invoice starts with them.