Get started with Rechna in six short videos

Rechna refuses to issue a document that would not be compliant. Before the first invoice it needs your legal name, address and a VAT ID or tax number, exactly as §14 UStG requires.

• The three gate fields: legal company name, address, VAT ID or tax number (or the §19 small-business box).
• Branding and numbering are optional. RE-00001 is the default number format.
• Save settings. The warning banner disappears and the dashboard step turns green.

TipNumber prefix and padding can change later, but only for future numbers. Discuss format changes with your tax advisor.

Rechna listens for paid orders. Nothing to click: the invoice is numbered without gaps, rendered as a PDF, and archived immutably for eight years within seconds of payment.

• Any order marked paid triggers it, whether from checkout, a draft order or point of sale.
• The list does not refresh on its own. Reload it and the new row is there.
• You can also issue by hand from Invoices › Issue invoice for a recent order.

TipChoose when invoices are created under Settings › Generate invoice on: order paid, order fulfilled, or manual only.

Every tag on the Invoices page means something specific, and hovering any of them explains it. Type, formats and status tell you at a glance what kind of document you are looking at.

• Type: invoice, storno or gutschrift. B2B marks a business buyer whose VAT ID is on the document.
• Formats: every invoice is a PDF. ZUGFeRD and XRechnung are the EU e-invoice formats for B2B buyers.
• Download PDF or XML any time, or open Correct to reverse or partially credit an invoice.

No need to open Rechna to reprint. On any order, More actions › Rechna shows the archived invoice page by page in Shopify's print preview.

• The preview is the archived document, exactly as issued; nothing is regenerated.
• Print it or close it. The original stays untouched in the archive.
• If the order has no invoice yet, the preview says so and points you to Rechna.

Invoices are never edited or deleted. To reverse one you issue a storno that references it; to credit only some lines you issue a gutschrift. Both draw the next number from the same gapless sequence.

• Storno cancels the whole invoice in one click. It cannot be edited afterwards.
• Gutschrift lets you pick the lines to credit.
• Full refunds in Shopify create the storno automatically; partial refunds of whole lines create a gutschrift.

Archive gives you a month of invoices as one ZIP: every PDF and XML plus a CSV index, GoBD style. Below it, a Verfahrensdokumentation template pre-filled with your details.

• Pick year and month, then Export ZIP. Free exports the current and previous month; every paid plan exports any period.
• The Verfahrensdokumentation is a starter template. Complete the marked parts with your Steuerberater.
• Nothing leaves the archive. Exports are copies.