Billing Credit notes & refunds

Refunds and corrections that leave a trail

A refund is not an edit. Issued invoices stay untouched and the correction is its own document, linked to the original.

The problem

"Just fix the invoice" is how records get lost

Editing a sent invoice quietly rewrites history. The customer has one version, you have another, and neither of you can prove which came first.

With Nisan

The correction is a document, not an eraser

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.

Billing

More in Billing

The complete stack

Everything you need to sell, in one place

Three products that share one account, one identity check and one set of records.

No monthly fee. You pay when you get paid.

Nisan opens on 18 November 2026. Issuing invoices is free; you pay only when you get paid.