The interface between online merchant and tax advisor

Accurate e-commerce accounting without headaches

E-commerce accounting is a challenge. It's time to simplify and automate accounting for e-commerce. AccountOne provides the platform to aggregate all sales and payment channels through one system and bring them into accounting. With AccountVAT's integrated VAT compliance solution, foreign taxes are also automatically covered.

More than

Online retailer
Tax consultant

use AccountOne enthusiastically

AccountOne offers a platform that prepares the data from marketplaces, online stores and payment systems for the tax consultant for online retailers. Our own valuation matrix is used here, which assigns sales to the correct tax rates and tax countries independently of a merchandise management system. The fully automatic allocation of payment flows to revenue is already carried out on our platform. The resulting data can then be used to provide exports for the accounting department or tax consultant.

Solutions for online retailers and tax consultants

AccountOne offers the fully automated interface that automatically creates accounting imports from online sales via Amazon, eBay or the online store, which can be read into any accounting system with a DATEV interface.


We offer interfaces to the most important marketplace and store systems.

Sales Tax Matrix

Fully automatic VAT assessment of all sales, Europe-wide. Also for dropshippers and PAN EU traders.

Accounting export

100% DATEV compatible & batch processable. Without rework in the accounting department.


We are there for our customers, you can reach us personally by phone or e-mail.


Directly accessible via web browser without installation. 24/7 Up-to-Date!

Minimally invasive

AccountOne integrates into the existing tech stack without blocking other systems.

More than 850 tax firms already use AccountOne for the accounting of online retailers.

Accounting for online retailers is fun!

We provide a platform for online traders and tax consultants

Correct preparation of company figures can make the difference between success and failure in online retailing. What was previously only possible with hours of manual work is now done with just a few clicks.

Amazon Pan-EU, dropshipping or multichannel retailer

In addition to classic online trading, we map all special cases in e-commerce and prepare the data for accounting. The following cases can be covered with us:

  • Amazon Europe
  • Amazon USA
  • Amazon EFN, PAN EU
  • Dropshipping
  • Small business
  • OSS
  • Differential taxation

As individual as you are!

Each accounting is as individual as the company behind it. For this reason, in addition to the accounting standards, we let you customize every setting. From 4 - 12 digit accounts to alphanumeric account assignments and posting keys, AccountOne adapts to your accounting, not the other way around.

Our interfaces

Frequently asked...

The price depends on several factors. Firstly, whether the bookkeeping is done in-house or by a tax consultant. Secondly, the price depends on the monthly transactions (e.g. sales).

Furthermore, there is no versioning or premium plugins in AccountOne. Every customer has unlimited access to all tools and functions.

As many as are needed. The amount of interfaces is not priced by us. We thus support the carefree expansion of online retailers.

The market for store and marketplace systems is growing continuously. That is why we are constantly connecting new systems to our solution. If a system is still not covered, we have the option of processing this data via upload.

Yes! We are convinced that a test can only be successful if everything can be tested. 

The only fly in the ointment: retroactive exports can only be ordered in the live system.


We provide all the tools and utilities to make accounting for online trading clients as smart as possible.

Our knowledge base provides you with all the help you need to operate AccountOne.

Keeping everything in view is not easy, we support the daily work with our dashboards.

50,000 orders with one click in accounting, without rework. Yes, it's possible!

14 days free & full trial

Includes 3 retrospective monthly exports, full access to the software and access to all support resources (helpdesk, e-mail & telephone)