Creating your first invoice

1 min readUpdated 19 Aug 2026
Quote or invoice, send the page, they pay, marked paidSales invoices in Nightbooks

Create invoices from Sales → New invoice. An invoice starts as a draft — nothing hits your books until you approve it, so you can experiment freely.

The essentials

  • Contact — pick an existing customer or type a new name to create one on the spot.

  • Line items — description, quantity, price, the account each line is earned against, and the GST rate per line.

  • Dates — issue date and due date; the due date drives overdue tracking and defaults from your organisation settings.

  • Amounts are tax exclusive or inclusive — switchable per invoice, with the default set in your organisation settings.

Draft vs approved

Drafts can be edited or deleted freely. Approving is the moment of record: it assigns the sequential invoice number, posts the invoice to your ledger as receivable income, and unlocks sending. After approval, fixing a mistake means voiding or editing with the books updated — see Voiding and copying invoices.

GST on invoices

If you are GST registered, invoices are tax invoices: your GST number appears automatically and GST is calculated per line at the rate you choose. Most sales are standard-rated; zero-rated exports and GST-free supplies are selected per line.

Set your default due days and payment details once in Organisation settings and every new invoice starts correct.

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