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Rechnungskit
Rechnungskit vs. AccountOne

AccountOne alternative for marketplace and multichannel sellers

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Rechnungskit creates the invoices itself, compliant with the date of supply, locked from creation and with voucher logic, and also delivers finished DATEV bookings. AccountOne only starts once documents already exist and books them; its own invoicing exists only as a narrowly limited beta.

Sources checked: July 28, 2026 · Updated: October 3, 2026 · No guarantee of accuracy · Sources below the table

The short version

Rechnungskit fits if …

your invoices should be created automatically and compliantly: ZUGFeRD with validation, the date of supply from shipping, a GoBD document archive and a qualified VAT ID check with evidence.

AccountOne fits if …

you're mainly an Amazon Pan-EU or multi-marketplace seller looking for an established booking workflow for 17+ marketplaces with a network of tax firms.

Two different layers: AccountOne prepares existing sales data for accounting, Rechnungskit creates the documents itself and also exports to DATEV. The two overlap on the export, but not on invoicing.

Rechnungskit and AccountOne in detail

Every row is backed by a source. Where something couldn't be confirmed from public sources, the table says so.

Feature comparison of Rechnungskit and AccountOne, as of July 28, 2026
Feature RechnungskitAccountOne
E-invoicing
ZUGFeRD 2.x / Factur-X outgoing Yes ZUGFeRD 2.5 under EN 16931, every invoice Status: included Beta only3 invoicing module in beta: only Shopify and Amazon, only the 19% standard rate, only German companies Status: limited, see footnote 3
XRechnung for public-sector buyers Yes XRechnung 3.0 automatically as soon as the customer has a Leitweg-ID (public-sector routing ID) on file Status: included Not documented no XRechnung in the invoicing module publicly documented Status: no reliable source found
Validation before sending Mandatory fields under §14 UStG, tax rates, format rules Yes every invoice before sending (Mustang/EN 16931) Status: included Not documented Status: no reliable source found
Receive and process e-invoices No deliberately out of scope. Rechnungskit creates outgoing invoices Status: not available No2 processes raw data; according to the help center, document images are not provided Status: not available, see footnote 2
Shop automation
Native shop and payment integrations no third-party tools Yes Shopify, WooCommerce and Shopware natively, Stripe/Mollie/PayPal/Unzer, own checkout link for one-time purchases and subscriptions without a shop, own push API Status: included Yes, very broad1 40+ interfaces: Amazon Pan-EU, eBay, OTTO, Zalando, Temu, Shopify, Stripe, Mollie and many more Status: included, see footnote 1
Invoicing on the correct date of supply shipping date instead of payment date, automatically Yes from the shop's shipping event; for subscriptions, the service period comes from the billing period Status: included When booking2 shipping date as the date of supply when booking; own invoicing only as beta Status: limited, see footnote 2
Automatic cancellation invoices on refunds including partial refunds Yes to the cent, with its own correction document Status: included Booking1 refunds are booked; automatic cancellation documents not documented Status: limited, see footnote 1
Payout reconciliation with fees Stripe, Mollie, PayPal and others as finished bookings Yes fees and payouts as bookings Status: included Yes1 fully automatic open-item clearing, fees to expense accounts Status: included, see footnote 1
Tax compliance
OSS / EU distance selling Yes destination-country rates, monitoring of the €10,000 threshold, export Status: included Booking, filing manual2 OSS keys in the DATEV export; filing by hand in the BOP portal or via the paid partner service tax.fish Status: limited, see footnote 2
EU tax rates updated automatically Yes monthly from the EU database TEDB, with change alerts Status: included From source systems2 taken from the shop or maintained by hand; central automatic updates not documented Status: limited, see footnote 2
Qualified VAT ID (USt-IdNr.) check with evidence archive Yes qualified check with the BZSt (Federal Central Tax Office), response archived for 8 years Status: included Simple check only2 according to the help center, a qualified confirmation procedure is explicitly not carried out Status: not available, see footnote 2
Single- and multi-purpose vouchers (§3 (13) to (15) UStG) Yes own voucher and store-credit register Status: included Yes, manual2 multi-purpose booking available; voucher flag must be set per item and again every year Status: limited, see footnote 2
Deferred revenue (pRAP) / revenue recognition for subscriptions Yes pRAP for subscriptions and annual licenses Status: included Not documented no deferral logic publicly documented Status: no reliable source found
DATEV & archive
Finished DATEV booking records not just document images Yes EXTF for SKR03/SKR04, revenue + payments + fees; document images via Beleglink in the "Belegtransfer" package for Unternehmen online Status: included Yes1 EXTF format + DATEV booking data service; revenue, payments, fees, open-item clearing Status: included, see footnote 1
GoBD archive with locking (Festschreibung) Yes WORM archive, SHA-256, locked from creation Status: included Bookings yes, documents no2 locking of booking data (reopening €95); no document archive Status: limited, see footnote 2
Free access for your tax advisor Yes own tax advisor portal, documents read-only Status: included Yes2 free access for tax firms Status: included, see footnote 2
Accounting & operations
VAT return (UStVA) / cash-basis accounts (EÜR) / direct ELSTER filing EC Sales List (ZM) import files are covered separately ZM data ZM import file yes; UStVA, EÜR and direct ELSTER filing stay with your tax advisor Status: limited No2 export to DATEV, your tax advisor files; same as Rechnungskit Status: not available, see footnote 2
Entry price from €9 base fee + tiered price per document; free to test in sandbox mode Status: included from €241 transaction-based; 2.2 transactions per order on average Status: note, see footnote 1
API for your own systems Yes push API in every plan Status: included Not documented2 no developer API documented; connectors and CSV import Status: no reliable source found, see footnote 2

E-invoicing

ZUGFeRD 2.x / Factur-X outgoing
Rechnungskit Yes ZUGFeRD 2.5 under EN 16931, every invoice Status: included
AccountOne Beta only3 invoicing module in beta: only Shopify and Amazon, only the 19% standard rate, only German companies Status: limited, see footnote 3
XRechnung for public-sector buyers
Rechnungskit Yes XRechnung 3.0 automatically as soon as the customer has a Leitweg-ID (public-sector routing ID) on file Status: included
AccountOne Not documented no XRechnung in the invoicing module publicly documented Status: no reliable source found
Validation before sending
Mandatory fields under §14 UStG, tax rates, format rules
Rechnungskit Yes every invoice before sending (Mustang/EN 16931) Status: included
AccountOne Not documented Status: no reliable source found
Receive and process e-invoices
Rechnungskit No deliberately out of scope. Rechnungskit creates outgoing invoices Status: not available
AccountOne No2 processes raw data; according to the help center, document images are not provided Status: not available, see footnote 2

Shop automation

Native shop and payment integrations
no third-party tools
Rechnungskit Yes Shopify, WooCommerce and Shopware natively, Stripe/Mollie/PayPal/Unzer, own checkout link for one-time purchases and subscriptions without a shop, own push API Status: included
AccountOne Yes, very broad1 40+ interfaces: Amazon Pan-EU, eBay, OTTO, Zalando, Temu, Shopify, Stripe, Mollie and many more Status: included, see footnote 1
Invoicing on the correct date of supply
shipping date instead of payment date, automatically
Rechnungskit Yes from the shop's shipping event; for subscriptions, the service period comes from the billing period Status: included
AccountOne When booking2 shipping date as the date of supply when booking; own invoicing only as beta Status: limited, see footnote 2
Automatic cancellation invoices on refunds
including partial refunds
Rechnungskit Yes to the cent, with its own correction document Status: included
AccountOne Booking1 refunds are booked; automatic cancellation documents not documented Status: limited, see footnote 1
Payout reconciliation with fees
Stripe, Mollie, PayPal and others as finished bookings
Rechnungskit Yes fees and payouts as bookings Status: included
AccountOne Yes1 fully automatic open-item clearing, fees to expense accounts Status: included, see footnote 1

Tax compliance

OSS / EU distance selling
Rechnungskit Yes destination-country rates, monitoring of the €10,000 threshold, export Status: included
AccountOne Booking, filing manual2 OSS keys in the DATEV export; filing by hand in the BOP portal or via the paid partner service tax.fish Status: limited, see footnote 2
EU tax rates updated automatically
Rechnungskit Yes monthly from the EU database TEDB, with change alerts Status: included
AccountOne From source systems2 taken from the shop or maintained by hand; central automatic updates not documented Status: limited, see footnote 2
Qualified VAT ID (USt-IdNr.) check with evidence archive
Rechnungskit Yes qualified check with the BZSt (Federal Central Tax Office), response archived for 8 years Status: included
AccountOne Simple check only2 according to the help center, a qualified confirmation procedure is explicitly not carried out Status: not available, see footnote 2
Single- and multi-purpose vouchers (§3 (13) to (15) UStG)
Rechnungskit Yes own voucher and store-credit register Status: included
AccountOne Yes, manual2 multi-purpose booking available; voucher flag must be set per item and again every year Status: limited, see footnote 2
Deferred revenue (pRAP) / revenue recognition for subscriptions
Rechnungskit Yes pRAP for subscriptions and annual licenses Status: included
AccountOne Not documented no deferral logic publicly documented Status: no reliable source found

DATEV & archive

Finished DATEV booking records
not just document images
Rechnungskit Yes EXTF for SKR03/SKR04, revenue + payments + fees; document images via Beleglink in the "Belegtransfer" package for Unternehmen online Status: included
AccountOne Yes1 EXTF format + DATEV booking data service; revenue, payments, fees, open-item clearing Status: included, see footnote 1
GoBD archive with locking (Festschreibung)
Rechnungskit Yes WORM archive, SHA-256, locked from creation Status: included
AccountOne Bookings yes, documents no2 locking of booking data (reopening €95); no document archive Status: limited, see footnote 2
Free access for your tax advisor
Rechnungskit Yes own tax advisor portal, documents read-only Status: included
AccountOne Yes2 free access for tax firms Status: included, see footnote 2

Accounting & operations

VAT return (UStVA) / cash-basis accounts (EÜR) / direct ELSTER filing
EC Sales List (ZM) import files are covered separately
Rechnungskit ZM data ZM import file yes; UStVA, EÜR and direct ELSTER filing stay with your tax advisor Status: limited
AccountOne No2 export to DATEV, your tax advisor files; same as Rechnungskit Status: not available, see footnote 2
Entry price
Rechnungskit from €9 base fee + tiered price per document; free to test in sandbox mode Status: included
AccountOne from €241 transaction-based; 2.2 transactions per order on average Status: note, see footnote 1
API for your own systems
Rechnungskit Yes push API in every plan Status: included
AccountOne Not documented2 no developer API documented; connectors and CSV import Status: no reliable source found, see footnote 2
Sources & footnotes
  1. 1. accountone.de (home page, story, pricing, interfaces), apps.shopify.com/accountone (plan tiers) and datev.de/marktplatz/accountone, checked on July 28, 2026.
  2. 2. hilfe.accountone.de: articles on the VAT ID check ("Ein qualifiziertes Bestätigungsverfahren wird nicht im AccountOne System durchgeführt", i.e. no qualified confirmation procedure is carried out), on document images, OSS/IOSS, locking, multi-purpose vouchers and accounting reconciliation, retrieved July 2026.
  3. 3. accountone.de: invoicing module beta test, retrieved July 2026.
  4. Information from the provider's website (pricing, feature and help pages), last checked on July 28, 2026; prices net of VAT.
  5. Rows marked "Not documented" mean we found no reliable public source, not that the feature is missing.
  6. Rechnungskit information reflects the current product; items marked "Planned" are not available yet.
  7. Legal basis for the rows and sections (German law): mandatory invoice details § 14 (4) UStG, e-invoicing § 14 (1) and (2) UStG with the transition rules in § 27 (38) UStG, small-amount invoices § 33 UStDV, vouchers § 3 (13) to (15) UStG, OSS threshold § 3c (4) UStG and filing § 18j UStG, VAT ID confirmation § 18e UStG, intra-EU supply § 6a UStG, tax arising in the filing period of the supply § 13 (1) no. 1 (a) UStG, retention § 14b (1) UStG and § 147 (3) AO, deferred revenue § 250 (2) HGB, archive GoBD, BMF letter of 28.11.2019.

All information from publicly available sources, checked July 28, 2026. Providers' features and prices can change. Please report mistakes to support@rechnungskit.de. How we rate is explained in How we compare.

When is AccountOne the better choice?

Rechnungskit doesn't do everything. In these cases, AccountOne is the more honest recommendation.

You sell on many marketplaces

Amazon Pan-EU including commingling, eBay, OTTO, Zalando, Temu and more: Rechnungskit doesn't cover that breadth.

You only need the bookings

If your invoices are already created elsewhere (Amazon VCS, for example) and it is only about DATEV, AccountOne is built for that.

Foreign VAT beyond OSS

Pan-EU warehousing and local registrations are covered by AccountOne's tax.fish ecosystem as a paid service.

Established tax firm workflow

On the market since 2016, DATEV partner with a marketplace listing, and according to the company 2,000 tax advisors and more than 1,100 tax firms in its network.

What Rechnungskit does differently

Invoicing

Invoicing on the correct date of supply

Shipped goods are invoiced on the shipping date, not the payment date. It sounds like a detail, but it decides which period the revenue lands in.

Date of supply (Leistungsdatum) from the shop's shipping event
Small-amount invoices automatically under §33 UStDV
Handover to DATEV in the right period
Tax compliance

VAT ID check with evidence archive

Qualified check with the BZSt (Federal Central Tax Office) including company name, city, postcode and street. The response is archived unchanged for eight years and linked to the individual invoice.

Qualified BZSt check instead of a simple format check
Response linked to the invoice and delivery date
No tax-exempt invoice without a usable check
Accounting

DATEV bookings with linked documents

Your tax advisor gets finished EXTF booking records, not just a folder of PDFs. Revenue, payments, fees and payouts are already matched, and every invoice booking carries a Beleglink to its document image in the "Belegtransfer" package for Unternehmen online.

EXTF bookings for SKR03 and SKR04
Document image attached to the booking via Beleglink
Fees and payouts already matched
Your tax advisor downloads them directly

Price comparison

List prices net per month, as of July 28, 2026. Discounts and promotions are not included.

Rechnungskit List price
from €9 / month net + tiered price per document
Free to test in sandbox mode; billing starts at go-live
After that, a €9 base fee plus €0.15 to €0.03 per document
OSS, ZM, DATEV, GoBD archive and every feature always included
Self-service signup with no waiting list, up and running in minutes
Cancel monthly, no setup fee
AccountOne List price
from €24 / month net, transaction-based
200 transactions: €24; 1,000: €49; 3,000: €99
From 15,000 transactions, capped at €129 plus €10 per additional 1,000
2.2 transactions per order on average
OSS filing via tax.fish costs extra; reopening a locked period €95
Source: accountone.de/preise, as of July 2026
Worked example
Seller with 500 Shopify orders a month who needs invoices and bookings: AccountOne books them (around 1,100 transactions), invoicing remains unsolved.
Rechnungskit
€68.00
AccountOne
approx. €99, without invoice creation

Switching in three steps

1
Bring your data over

Orders and payments from your connected sources are pulled in, and your invoice number sequence continues. Old documents stay available in your previous system; Rechnungskit doesn't import invoices created elsewhere.

2
Test in parallel

Both systems run side by side for one billing period. You compare documents and bookings before anything goes live.

3
Switch over

Sending is switched over and your tax advisor gets the new export access. The old system stays in place as an archive.

FAQ

On invoicing, the question works the other way around: at its core AccountOne doesn't create invoices (apart from a narrowly limited beta module), Rechnungskit does. Both overlap on the DATEV export; for simply booking many marketplaces, AccountOne remains broader.

Yes, and that's the usual way to switch. You run both systems in parallel for one billing period and compare documents and bookings before you switch over.

They stay where they are. Rechnungskit doesn't import or archive invoices created elsewhere; you keep meeting your retention duty for old documents (eight years under § 14b (1) UStG and § 147 (3) AO) in your previous system. What Rechnungskit can pull in are past orders and payments from your connected shops and payment providers, which then become new, validated invoices. For the number sequence, you set the number Rechnungskit continues from, so nothing overlaps with your old documents.

Documents are stored tamper-proof and unchangeable for eight years for as long as your account exists (WORM archive with checksums). Eight years is the retention period for invoices and accounting records (§ 14b (1) UStG, § 147 (3) AO); the requirements for the archive are set out in the GoBD. You can export them at any time, and for 90 days free of charge after you cancel. The final assessment of your process documentation (Verfahrensdokumentation) is up to your tax advisor.

Technically yes: Rechnungskit handles invoicing and the document archive for Shopify and Stripe, for example, and AccountOne books additional marketplaces. What matters is splitting the DATEV export cleanly by channel so revenue is not booked twice. Agree on the split with your tax advisor.

At AccountOne, according to the help center, no: document images are not provided there, so the bookings arrive without a document. Rechnungskit delivers a "Belegtransfer" package for DATEV Unternehmen online with every revenue export, and every invoice booking in the batch carries a Beleglink to its PDF. After the upload, the document image sits on the booking in DATEV.

From the providers' publicly available sources, checked on July 28, 2026, with footnotes for each row. Where we found no reliable source, the table says "Not documented". If you spot a mistake, write to support@rechnungskit.de and we'll correct it and re-date the page.

Related reading

More comparisons

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.

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