Your e-commerce accounting. Automatically into DATEV.
AccountOne collects sales and payment data from Amazon, Shopify, PayPal & Co., assigns every sale to the correct tax rate and country and delivers a clean DATEV export to your tax consultant.
Test free for 14 days Book a live demo
- All features included
- All integrations at no extra cost
- Personal switching service
- Cancel monthly
How AccountOne works fully automated, every month
- Connect your channels
- Amazon
- Shopify
- PayPal
- + 40 more
- AccountOne processes
- Tax rate & country per sale
- Open item matching of payments
- OSS, Pan-EU, dropshipping
- Export to your tax consultant DATEV export ready Booking batches · batch-processableFewer queries from your tax consultant.
All e-commerce clients. One platform.
AccountOne automatically processes the sales and payment data of your online retail clients – including VAT assessment across Europe – and transfers it directly to any accounting system with a DATEV connection.
Create a free account for your firmCreate your firm account Book a live demo
- Permanently free of charge for tax firms
- Multi-client capable, multi-user for firms
- Direct line to our specialists
How AccountOne works fully automated, every month
- Your clients' channels
- Amazon
- Shopify
- PayPal
- + 40 more
- AccountOne processes
- Tax rate & country per sale
- Open item matching of payments
- OSS, Pan-EU, dropshipping
- Import into your firm's software DATEV export ready Booking batches per client · batch-processableNo rework in your accounting.
Over 6,000 online retailers use AccountOne
Over 2,000 tax firms use AccountOne
Our integrations
Over 40 systems – the number of integrations you use is not limited in the price.
Adyen
Amazon
AmazonPay
Base
Billbee
Chargebee
Conrad (Mirakl)
Decathlon (Mirakl)
DocMorris
Douglas (Mirakl)
eBay
Etsy
Fressnapf (Mirakl)
Home24 (Mirakl)
Hornbach (Mirakl)
JTL
Kaufland
Klarna
Limango (Mirakl)
Magento
MediaMarkt (Mirakl)
METRO
Mollie
OBI (Mirakl)
OTTO
PayPal
plentyONE
Saturn (Mirakl)
ShopApotheke (Mirakl)
Shopify
Shopify Payments
Shopify Plus
Shopware 5
Shopware 6
Stripe
Temu
TikTok Shop
Voelkner (Mirakl)
WooCommerce
WooCommerce Payments
Xentral
XXXLutz (Mirakl)
Zalando
ZooPlus (Mirakl)
Our integrations
Wherever your clients sell: the number of integrations used is not limited in the price.
- Adyen
- Amazon
- AmazonPay
- Base
- Billbee
- Chargebee
- Conrad (Mirakl)
- Decathlon (Mirakl)
- DocMorris
- Douglas (Mirakl)
- eBay
- Etsy
- Fressnapf (Mirakl)
- Home24 (Mirakl)
- Hornbach (Mirakl)
- JTL
- Kaufland
- Klarna
- Limango (Mirakl)
- Magento
- MediaMarkt (Mirakl)
- METRO
- Mollie
- OBI (Mirakl)
- OTTO
- PayPal
- plentyONE
- Saturn (Mirakl)
- ShopApotheke (Mirakl)
- Shopify
- Shopify Payments
- Shopify Plus
- Shopware 5
- Shopware 6
- Stripe
- Temu
- TikTok Shop
- Voelkner (Mirakl)
- WooCommerce
- WooCommerce Payments
- Xentral
- XXXLutz (Mirakl)
- Zalando
- ZooPlus (Mirakl)
Compatible accounting systems
DATEV
Agenda
BMD
edrewe
Simba
The problem
Many channels, many countries, many tax rates – and hours of manual work at the end of every month.
| Without AccountOne | With AccountOne |
|---|---|
| Exporting CSV files from every marketplace one by one | Connect all channels once and the data arrives automatically |
| Assigning tax rates & delivery countries manually | Our own VAT matrix assesses every sale across Europe |
| Painstakingly matching payments to invoices | Fully automated open item matching |
| Queries from your tax consultant, rebookings, OSS risk | 100% DATEV-compatible export |
The problem
E-commerce clients tie up time: many channels, many tax countries, many payment flows – different for every client.
| Without AccountOne | With AccountOne |
|---|---|
| Clients deliver incomplete or inconsistent CSV exports | All channels of all clients come together in one platform |
| Checking tax rates & delivery countries by hand | Our own VAT matrix assesses every sale across Europe |
| Manually matching payment flows to revenues | Open item matching happens fully automatically before the export |
| Every new marketplace a client adds means new work | New channels of your clients can be connected directly – no extra charge per integration |
Why AccountOne
Software that calculates. People who help.
Fits your accounting
- 4- to 12-digit & alphanumeric accounts
- Minimally invasive in your existing tech stack
- SaaS in the browser, always up to date
Special cases covered too
- Integrated VAT compliance for foreign taxes
- Multichannel
- Dropshipping
- OSS
- EFN & Pan-EU
- Margin scheme
- Sales in Europe, USA & Far East
Personal & independent
- Phone support from our specialists
- We communicate with your tax consultant
- 100% investor-free, owner-managed from Flensburg
Why AccountOne
Software that calculates. People who help.
Fits your firm
- 100% DATEV-compatible, batch-processable
- Export adapts to your chart of accounts – 4 to 12 digits, alphanumeric
- Minimally invasive in your existing tech stack
- SaaS in the browser, always up to date
Your clients' special cases covered too
- Integrated VAT compliance for foreign taxes
- Multichannel
- Dropshipping
- OSS
- EFN & Pan-EU
- Margin scheme
- Sales in Europe, USA & Far East
Personal & independent
- Phone support from our specialists
- Be found by online retailers in the PartnerNet
- 100% investor-free, owner-managed from Flensburg
What customers say
All reviews on OMR Reviews-
★★★★★ on OMR Reviews
Customer service that is second to none
“What impresses us most is the combination of powerful software that simply works and customer service that is second to none. … All sales and payment data is assigned centrally and prepared in a DATEV-compliant way.”
Ramiz CEO, BG E-Commerce GmbH -
★★★★★ on OMR Reviews
Developed very close to its users' actual use cases
“In addition to Shopify, external payment providers such as PayPal, Klarna or Mollie can be connected easily … You can also tell that Account One is developed very close to its users’ actual use cases.”
Finn Managing director, Bielawski & Hartwich GbR -
★★★★★ on Google
Take an enormous amount of work off our hands
“Especially in e-commerce, clean and tax-compliant processing of marketplace data is not a ‘nice-to-have’ but business-critical. … [They] take an enormous amount of work off our hands and above all provide certainty.”
Björn Managing director, B+B Computer Trading GmbH -
★★★★★ on Google
Clear recommendation!
“The system is well thought out and saves us a lot of time. We would particularly like to highlight the service: quick responses, competent help … Clear recommendation!”
FIXLINE Online retailer
What customers say
All reviews on the DATEV Marketplace-
★★★★★ on DATEV Marketplace
You can't give AccountOne's support enough stars
“After the initial setup, a really great integration via the DATEV accounting data service. And you can’t give AccountOne’s support enough stars.”
Anonymous Tax consultancy -
Perfect partners
“Together with tax.fish, AccountOne is the perfect partner for our practice-oriented "All-In-One" e-commerce solution. Fast response times and competent contacts have been with us here for years”
Uwe Riediger Tax consultant, managing director: steueragenten.de E-Commerce Steuerberatungsgesellschaft mbH -
Reliable support
“Our clients open up new marketplaces almost daily and connect to the latest store systems and payment service providers. We can absolutely rely on AccountOne's technical support!”
Karl-Michael Reuter Tax consultant, business graduate: RP Reuter GmbH Steuerberatungsgesellschaft -
To a new level
“AccountOne takes accounting in e-commerce to a new level. Not only marketplaces and stores such as Amazon, eBay and Shopify can be connected, but also a number of payment providers and merchandise management systems. Without AccountOne, we would have to use umpteen different integrations. So we have an all-in-one solution for our online retailers and our employees always have an overview.”
Felix Böckmann Tax consultants & partners: SKULD - Böckmann Krause Sandner Velten -
Easy to understand
“We have been working with AccountOne for many years and are more than satisfied. The system is easy to understand and the integration of various channels and payment service providers is quick and smooth. We particularly appreciate the individual support and the great support - a real plus point for us and our clients. In addition, the team is not only competent, but also super nice - a collaboration that is simply a pleasure!”
Thomas Haag Diplom-Kaufmann (FH) / tax consultant, Managing Director of taxbeat Steuerberatungsgesellschaft mbH
For online retailers
Accounting for every sales channel
Marketplaces, your own store, sales to other EU countries or special cases: see what AccountOne takes care of for your online business.
PartnerNet
No e-commerce tax consultant yet?
Find selected tax firms that know online retail and AccountOne inside out. Whether you are looking for a firm for the first time or considering a switch – in the PartnerNet you will find the right expert.
For tax firms
From online retail to accounting
AccountOne prepares your clients' e-commerce data for DATEV – permanently free of charge for tax firms.
Frequently asked questions before you start
How much does AccountOne cost?
The price is based on the number of monthly transactions (e.g. sales). You can work out your price with our price calculator.
There are no versioning or premium plug-ins in AccountOne - every customer has unlimited access to all tools and functions.
How many integrations are included in the price?
As many as you need. We do not charge for the number of integrations. In this way, we support the carefree expansion of online retailers.
What if no API is available?
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, please contact our support team and we will look at your case individually.
Can I use all functions during the test period?
Yes, we are convinced that a test can only be successful if everything can be tested.
3 retroactive monthly exports are always included. Exports for earlier periods can be unlocked for a fee.
Frequently asked questions before you start
What does AccountOne cost my firm?
Nothing – your firm uses AccountOne permanently free of charge.
For your clients, the price depends on the number of their monthly transactions, from €24 per month. You can work out their price with our price calculator.
How many integrations are included in the price?
As many as your clients need. We do not charge for the number of integrations.
What if one of my clients' systems is not connected?
We are constantly connecting new systems. If a system is not yet covered, please contact our support team and we will look at your case individually.
Can my clients test AccountOne first?
Yes, free of charge for 14 days and with all features. 3 retroactive monthly exports are always included; exports for earlier periods can be unlocked for a fee.
Test AccountOne free for 14 days.
With full access to the software and all support channels.
Questions first? Call us: +49 461 57 49 49 85
Your firm uses AccountOne permanently free of charge.
For smooth collaboration with your clients.
Questions first? Call us: +49 461 57 49 49 85
Create a free account for your firmCreate your firm account Book a live demo