Pick a format below and get a clean, sequential invoice numbering system for your business — copy it straight in.
A consistent format makes invoices easy to track, easy to reference in emails, and — in many countries — is required for tax and accounting purposes. Keep it simple: a short prefix, an optional year, and a padded sequential number. Avoid reusing numbers, and avoid skipping around.
Ledger numbers your invoices automatically — no spreadsheet needed.
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