AccountOne or Rechnungskit? Writing invoices or preparing booking data

Partly. For your own store on Shopify, WooCommerce or Shopware and for Stripe, Rechnungskit replaces AccountOne and also writes the invoices that AccountOne only creates in a beta. Rechnungskit doesn't book marketplaces such as Amazon, eBay or OTTO, Amazon warehouses in several countries or systems such as Chargebee or JTL; for those, AccountOne remains the right tool.

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.

AccountOne bills by the previous month's transactions. Up to 200 transactions cost €24, up to 1,000 cost €49, up to 3,000 cost €99 and up to 15,000 cost €129 net a month, then €10 per further 1,000. A sale, refund, customer payment and repayment each count as one transaction; per AccountOne it's 2.2 per order on average. At 500 orders that comes to €99, at 2,000 orders to €129. Rechnungskit costs €68 at 500 documents, €105.50 at 1,000 and €180.50 at 2,000 (as of October 14, 2026). From about 900 orders a month, AccountOne is cheaper. What AccountOne leaves out is the invoice itself: your store writes it, or the beta invoicing module does. With Rechnungskit, e-invoices, the archive and DATEV bookings are included in the price.

AccountOne is software from AccountOne GmbH in Flensburg, founded in 2016. It pulls order and payment data from more than 40 stores, marketplaces and payment providers, assesses every sale for VAT by country and rate, and passes the result to DATEV or other accounting programs as booking batches. It clears payments against open items. It is built for online sellers and their tax firms; the tax firm uses it for free.

Only in a beta. The invoicing module writes ZUGFeRD invoices and sends them through your own mail server or uploads them to Amazon. You can join if you sell through Shopify or Amazon without VCS, your company is based in Germany, you only sell at the 19% standard rate and you don't dropship. AccountOne names no version, no XRechnung and no check before sending. Rechnungskit writes every invoice as ZUGFeRD 2.5, checks it before sending and turns it into XRechnung 3.0 when a Leitweg-ID is stored for the customer. You have to issue e-invoices to businesses from 2028 at the latest, or from 2027 with prior-year revenue above €800,000 (§ 14 (1) UStG, § 27 (38) UStG).

On OMR Reviews, AccountOne has 4.8 out of 5 stars from 25 reviews. The Shopify app "AccountOne ‑ Ecommerce2Datev" is free and has 2 reviews averaging 2.7 stars (as of October 14, 2026). On its website, AccountOne mostly quotes tax firms that use it for their e-commerce clients. A handful of reviews says little about whether the tool suits you. What matters more is whether your invoices already exist and you only need bookings, or whether both should come from one system.

You connect Shopify through the free AccountOne app and Stripe through a separate connector; Stripe Billing also supplies the revenue. AccountOne pulls the Shopify data once a payout is available and a settlement has been created, and books with the shipping date as the date of supply. It clears payments against revenue, and fees go to the expense accounts you set up per payment provider. The invoice to your customers is still written by Shopify or an invoicing app. Rechnungskit also connects to Shopify and Stripe directly; it writes the invoice and delivers the DATEV bookings with fees and payouts as well.

No. AccountOne checks about every four hours whether a VAT ID is valid. Per its help center, a qualified confirmation with a check of name and address doesn't take place and has to happen in the upstream system or in the bookkeeping. If an ID is invalid, AccountOne books the order as B2C revenue. For a VAT-exempt intra-community supply, your customer must use a valid VAT ID (§ 6a (1) no. 4 UStG); on request, the BZSt also confirms name and address (§ 18e UStG). Rechnungskit runs a qualified check with the BZSt before a VAT-exempt invoice is created and keeps the answer with the invoice.

No. Per the help center, AccountOne doesn't provide document images because it only pulls the raw data from stores and marketplaces. The order number sits in the document field, and your tax advisor looks up the matching invoice in the store. The beta invoicing module creates document images that match the booking data, but only for the sellers admitted to it. Rechnungskit delivers a "Belegtransfer" package for DATEV Unternehmen online with every revenue export, and every invoice booking carries a document link to its invoice.

Yes, if you split the channels. Rechnungskit then writes the invoices for your store and delivers the DATEV bookings for them, and AccountOne books your marketplaces such as Amazon or eBay. What matters is that every sale is booked only once: switch the store off in AccountOne, or let Rechnungskit only write invoices for it and take the bookings from AccountOne. It's best to agree on the split with your tax advisor.

You cancel in writing, an email to info@accountone.de is enough, at least 30 days before the end of a month. The last invoice arrives the month after, because AccountOne bills in arrears. After deactivation you have one more month of access to all data and exports; AccountOne recommends downloading at least all revenue and payment exports. Within six months you can have a cancelled account restored for a handling fee of €49. The eight-year retention duty for accounting records is yours (§ 147 (3) AO, § 14b (1) UStG), including the invoices from your store.

From the providers' publicly available sources, checked on October 14, 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.