One system for everything that comes after checkout.

Every document is a ZUGFeRD invoice under EN 16931: a PDF/A-3 with embedded XML. The XML meets the format requirement for e-invoices in § 14 (1) UStG, and consumers open the document like a normal PDF. Public-sector buyers automatically get an XRechnung 3.0 as soon as their Leitweg-ID (public-sector routing ID) is on file.

Logo, accent color and text blocks make the invoice yours. Optional email delivery goes out in the name of your business, not in the name of Rechnungskit.

Mandatory fields under § 14 UStG, tax rates and format rules are checked before the invoice reaches the customer.

Shipped goods are invoiced on the shipping date, not the payment date. The date of delivery is a mandatory detail on the invoice (§ 14 (4) no. 6 UStG). Digital services are invoiced right after payment.

A refund or cancellation in the shop or at the payment provider? Rechnungskit creates the cancellation invoice (Storno) automatically, accurate to the cent even for partial refunds.

A one-click upsell after checkout (e.g. WooCommerce with FunnelKit/UpStroke)? The order grows, a second payment comes in, and Rechnungskit automatically creates a supplementary invoice for exactly the items added.

Did a customer enter the wrong billing address or forget the company name? You correct it right on the invoice, as a corrected invoice (§ 31 UStDV) under the same invoice number, without a cancellation.

Sell your own products without a shop through a shareable link (checkout.rechnungskit.de/c/your-product). The buyer chooses the product and address, pays through your own payment provider, and Rechnungskit issues the e-invoice automatically.

Several products on one page (checkout.rechnungskit.de/shop/your-name): buyers add quantities to the cart and check out, and the result is one order and one e-invoice. Meant for small product ranges, trade fair stands and direct sales, not as a replacement for a shop system.

You create orders that come in without a shop yourself, for example from business customers by email or phone. A wizard guides you through customer, line items, service and payment method; the result is the e-invoice with payment terms or, for prepayment, once the money has arrived.

Recurring services like SaaS without a shop and without Stripe Billing: create plans, share the subscription link, and Rechnungskit sets up the mandate, charges monthly or annually and creates the e-invoice for each period.

Your SaaS, own checkout or headless shop reports orders to Rechnungskit via REST. The payment comes from the connected payment provider, and the e-invoice is created as soon as the two match.

Rechnungskit determines the type of supply, place of supply, taxability and exemption in the legally required order, for goods, SaaS and digital services.

Every product gets a VAT category, and the category sets the tax rate per delivery country through the country matrix. Rechnungskit classifies new shop products with AI support, and you confirm.

VAT rates per country and product category straight from the EU database TEDB, updated automatically every month.

Invoices can be issued in EUR, CHF, USD, GBP, SEK, DKK, NOK, PLN and CZK. Net amount, VAT and total also appear in euros on the document. By law, the BMF monthly average rate applies; using a daily rate requires permission from the tax office (§ 16 (6) UStG).

Distance sales and digital B2C services land together in the quarterly OSS return, prepared by country and tax rate for the BZSt (§ 16 (1d) UStG).

EU B2B supplies, triangular transactions and certain reverse-charge services are compiled from the invoice lines into a locked ELSTER import file.

Rechnungskit runs qualified VAT ID checks with the BZSt, live at checkout and again in the invoicing pipeline, and keeps the response as solid evidence.

Purchased vouchers, return credit and referral rewards are classified separately and tracked transparently.

For each transaction, Rechnungskit documents when an amount counts as revenue and when it is first carried as a liability or deferred revenue (pRAP).

Revenue and payments as finished EXTF booking batches per month, plus the documents as a DATEV "Belegtransfer" package. Your tax advisor imports both directly, with no rework.

Deferred revenue for prepaid services, with your tax advisor's documented policy per fiscal year.

Every document is stored tamper-proof for 8 years: structured XML in immutable storage (WORM) with a SHA-256 checksum that is verified on every retrieval.

Shopify, WooCommerce and Shopware deliver the orders; Stripe, Mollie, PayPal, Klarna, GoCardless, Unzer and Shopify Payments deliver the payments. When the two match, the document is created.

Every payout from Stripe, Mollie, PayPal, GoCardless, Klarna or Shopify Payments is broken down into payments, fees and refunds and reconciled against your invoices.

Pay-by-invoice and prepayment under control: invoice on shipping, open items always in view.

Kit guides you from your company details to the first connection. In test mode, documents run through the same pipeline as real invoices, but they don't count anywhere and never leave the system.

Role-based access: your team works along, your tax advisor gets their own area, auditors only read. Every action is recorded in the immutable activity log.

Kit explains features, shows you the right setting and helps with open tasks. When it doesn't know, a person takes over.