Agenda + Rechnungskit

Agenda and Rechnungskit (beta): booking batches for Agenda tax advisors

Q: What about the three-digit tax keys?

DATEV changed its tax keys from two to three digits. According to the Lexware help of 7 July 2026, Agenda has rejected such imports since 30.06.2026. Most bookings from Rechnungskit carry no key at all, because they book through accounts with automatic tax. For fees with tax key 506 under § 13b UStG, for example from Stripe or Mollie, Rechnungskit books the input VAT and output VAT explicitly on separate accounts for Agenda. We are checking OSS sales to other EU countries with a test import; until then the export check points out these lines.

Q: What do I set up in Rechnungskit?

At the top of Settings, the page asks which software your tax advisor uses. Choose Agenda there. The menu then calls export and settings "Agenda export" and "Agenda settings", and the files are named Agenda_…. Everything else stays as with DATEV.

Q: Does the Agenda firm get the same data as a DATEV firm?

Yes, from every store and payment provider: revenue with the tax rate per country, refunds, fees, payouts and chargebacks, plus the invoices as documents. Tax advisor access, Festschreibung and the automatic export run work the same way.

Q: Can a tax advisor preset Agenda for all their clients?

Yes. In the tax advisor portal under Profile, the firm sets its accounting software. Clients that connect to it after that and have no export yet start with Agenda. Existing clients keep their setting and can be switched one by one.

Q: Is there a direct connection between Rechnungskit and Agenda?

No. Through Agenda Connect, connected partner programs send documents to Agenda; Rechnungskit is not one of them, and we have not found a public interface for bookings. The exchange runs through the monthly file export. The originals stay GoBD-archived in Rechnungskit, with a checksum.

Yes. Agenda Finanzbuchhaltung reads DATEV-format booking batches through its import wizard. Rechnungskit creates these batches every month for revenue and payments, from every connected store and payment provider, and adds the invoices as a documents ZIP. If you set Agenda as your tax advisor's software in Rechnungskit, Rechnungskit writes the file so that Agenda accepts it.

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One export per month · import through the Agenda import wizard · no retyping

Hosted in Germany (Hetzner)
GoBD archive included
DATEV export included
Cancel monthly

The gap

Your firm books in Agenda. The invoice for each order comes first.

Agenda is software for tax advisors and businesses from Rosenheim, Germany, with its own accounting module. Many store tools only deliver data for DATEV. Agenda reads that format through its import wizard, but according to the Lexware help it has rejected DATEV's new three-digit tax keys since 30.06.2026. That is why Rechnungskit writes the Agenda file without those keys.

Agenda alone

Store tools mostly export for DATEV only
Agenda rejects DATEV's three-digit tax keys on import
Cancellation invoices on refunds by hand
Untangling the payment providers' fees and payouts

With Rechnungskit

E-invoice (ZUGFeRD) for every order, automatically
Cancellation invoice for every refund, no manual work
Tax rate per country, OSS return included
A monthly export that Agenda accepts

From sale to your tax advisor's Agenda accounts

Rechnungskit creates the invoice for every sale and the booking batches once a month. Your tax advisor reads them into Agenda, with the same data a DATEV firm gets.

Store and payment provider

Order and payment

Shopify, WooCommerce, Shopware, Stripe, PayPal, Mollie, Klarna

automatic

Schritt 2:Rechnungskit

E-invoice and bookings

ZUGFeRD invoice per sale, GoBD-archived
Cancellation invoice on refund
Monthly: booking batch plus documents ZIP

file export

Agenda

The firm's accounting

Import through Transfer › import wizard
Booking batch and documents in one go

Stays in Rechnungskit

Original invoices in the GoBD archive
OSS return and EC Sales List
Tax advisor access for your firm

How it works with Agenda

Four steps from the order into Agenda.

01

Connect

Connect your store and payment provider to Rechnungskit in the free test mode. Under Settings, choose Agenda as your tax advisor's software, and the chart of accounts SKR03 or SKR04.
02

Create invoices

Every order gets a validated e-invoice under EN 16931, every refund a cancellation invoice. Everything stays GoBD-archived.
03

Export

Once a month: booking batches for revenue and payments, plus the invoices as a ZIP. With its own access, your tax advisor can also download the files.
04

Read into Agenda

The tax advisor opens Transfer › import wizard in Agenda, chooses the booking batch and then the documents ZIP, without unzipping it.

Step-by-step guide Agenda instead of DATEV Setup step by step, common snags and detailed questions.

What arrives

What the Agenda firm gets from Rechnungskit.

DATEV-format booking batch EXTF format 700, SKR03 or SKR04, revenue and payments separate, for Agenda without three-digit tax keys on § 13b live

Documents ZIP One ZUGFeRD PDF per invoice (PDF/A-3 with XML under EN 16931), for Agenda's import wizard live

Cancellation invoices Created automatically on refunds in the store or payment provider, linked to the original invoice live

Direct transfer (Agenda Connect) Not available. The exchange runs through the file export. geplant

How Rechnungskit and Agenda work together

Beta: Agenda support is new, and a test import with an Agenda firm is still pending. Best check the first import in a test client in Agenda and report anything odd to support@rechnungskit.de.

Rechnungskit writes the invoices from your store and payment providers. Your tax advisor books in Agenda. In between sits the same monthly export a DATEV firm gets: a booking batch for revenue, one for payments and the invoices as documents. More about the export itself is on the DATEV export page.

Agenda reads DATEV-format booking batches through Transfer › import wizard. The firm first chooses the booking file, then the ZIP file with the documents (Lexware help for tax advisors, in German). The documents ZIP is not unzipped, Agenda imports it zipped (Rechnungsrakete help, in German).

What Rechnungskit writes differently for Agenda

DATEV changed its tax keys (BU) from two to three digits. According to the Lexware help of 7 July 2026, this has caused import errors in Agenda since 30.06.2026. Most bookings from Rechnungskit are not affected: revenue at 19 %, 7 % and 0 %, tax-exempt sales, intra-community supplies and exports book through accounts with automatic tax, with no key at all.

Fees with tax key 506 are different. These are services for which you as the recipient owe the tax (§ 13b UStG), such as the fees of Stripe, Mollie, GoCardless and Klarna. For Agenda, Rechnungskit leaves out the key and books the tax explicitly: the fee net, plus input VAT under § 13b against output VAT under § 13b at 19 %. Your tax advisor can change the accounts (SKR04 1407 against 3837, SKR03 1577 against 1787) in the mappings. OSS sales to other EU countries with keys 240 and 250 stay unchanged for now; a test import with an Agenda firm is still pending, and until then the export check points out these lines.

What Rechnungskit doesn't do

Rechnungskit transfers nothing directly into Agenda. Through Agenda Connect (in German), connected partner programs send documents to Agenda; Rechnungskit is not one of them, and we have not found a public interface for bookings. Rechnungskit doesn't replace Agenda either: bank reconciliation, incoming invoices and day-to-day bookkeeping stay with your tax advisor.

Who this is for

For online retailers and digital sellers whose tax advisor works with Agenda. Rechnungskit connects to Shopify, WooCommerce, Shopware, Stripe, PayPal, Mollie and Klarna. The information about Agenda comes from public help pages (as of October 2026) and may change.

FAQ

Agenda and Rechnungskit: frequently asked questions

Can Agenda import a DATEV export?

Yes. Agenda Finanzbuchhaltung reads DATEV-format booking batches through Transfer › import wizard: first the booking file, then the ZIP file with the documents. That is how the Lexware help for tax advisors describes it. The documents ZIP is not unzipped.

What about the three-digit tax keys?

What do I set up in Rechnungskit?

Does the Agenda firm get the same data as a DATEV firm?

Can a tax advisor preset Agenda for all their clients?

Is there a direct connection between Rechnungskit and Agenda?

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Rechnungskit is not a tax advisory or law firm. This article explains general principles and does not replace advice from a tax advisor (Steuerberater, § 5 StBerG) or a lawyer (§ 3 RDG). Rechnungskit is built for businesses based in Germany and prepares documents, tax rates and bookings automatically. How your specific case is treated remains your decision, ideally together with your tax advisor or a lawyer.

Bookings for Agenda, created automatically.

Create an account, connect your payment provider, check everything in free test mode. Billing starts when you go live.

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