A refund is not an edit. Issued invoices stay untouched and the correction is its own document, linked to the original.
Editing a sent invoice quietly rewrites history. The customer has one version, you have another, and neither of you can prove which came first.
A credit note references the original, reverses the right amount and corrects the tax with it. Both documents survive, and the order between them is unambiguous.
Three products that share one account, one identity check and one set of records.
Invoices and payments for clients anywhere
Identity, tax and the paperwork behind them
Turn a payment into real access
Nisan opens on 18 November 2026. Issuing invoices is free; you pay only when you get paid.