A platform specifically for tax consulting
More than
use AccountOne enthusiastically.
AccountOne is the most powerful platform for tax consultants who support clients in e-commerce. Sales and payment data from marketplaces, online stores and payment systems such as Amazon, eBay or Shopify are automatically processed and can be imported directly into any accounting system with a DATEV connection via our interface. Thanks to our own evaluation matrix ensures the precise allocation of sales to the correct tax rates and tax countries - even independently of a merchandise management system.
Payment flows are automatically assigned to the corresponding revenues on the platform. These structured data are used to create finished exports for further processing in the firm. AccountOne is specially tailored to the needs of tax consultants and offers a high degree of customization: from account assignment to the setting of complex tax issues. Our sophisticated templates ensure that even small mandates can be mapped efficiently, securely and in a time-saving manner.
Interfaces
We offer interfaces to the most important marketplace and store systems.
Sales Tax Matrix
Fully automated VAT assessment of all sales, Europe-wide. Also for dropshippers and
PAN-EU dealer.
Accounting export
100% DATEV compatible & batch processable. Without rework in the accounting department.
Support
We are there for our customers, by phone or e-mail you can reach
us personally.
SaaS
Accessible directly via web browser without installation.
24/7 Up-to-Date!
DATEV Partner
We are a DATEV interface partner and have an interface that has been technically tested by DATEV.
DATEV Partner
As an official DATEV partner we offer one of DATEV Technically tested interfacethat will give you as a tax consultant a reliable and smooth data exchange enables. The import into Kanzlei-Rechnungswesen is secure, seamless and requires no additional effort.
For existing customers with an activated invoice module, data transfer including receipt image is possible via the DATEV booking data service possible. Manual export and subsequent import into DATEV is no longer necessary.



"In AccountOne, I have found an IT partner that is able to develop very good solutions for my clients' very individual and sometimes very complex store systems. I am always impressed by the high level of flexibility and team spirit in the development of solutions."
Alexandra Roeske
Tax consultant, CINA: Roeske Law Firm, Bornheim
Try AccountOne free of charge and without obligation
AccountOne Features
AccountOne combines all sales and payment flows on a central platform. Developed in close cooperation with tax law firms and online retailers, this has resulted in a Powerful software emerged, which Flexible can be adapted to the requirements of both sides. In addition to the typical structures of online trading, AccountOne also forms a Large number of special cases reliably - from cross-border sales to complex tax constellations. We welcome every new challenge - and develop the right solution together with our customers.
Our interfaces




















*Semi-automatic interface
Knowledge database
Uur knowledge database is your first port of call for all things AccountOne. Here you will find step-by-step instructions, practical tips and helpful answers to make your day-to-day work easier - whether you are new to it or just want to look something up.
Join PartnerNet!
Our PartnerNet offers you the ideal opportunity to become part of a strong network! Present your law firm to potential clients and make valuable contacts with online retailers. Whether you want to win new clients or expand your network - with the AccountOne PartnerNet create the best conditions for your success.
Test free of charge & in full
Full access to the software and access to all support resources (helpdesk, e-mail & telephone)