TAXDOO Acquires accountDigital: The Future of E-Commerce Starts Now!

Accounting and VAT compliance – two topics that, for many internationally active online merchants, mean just one thing: Effort. Complexity. Uncertainty. But that’s about to change now. Thanks to a unique partnership between two industry leaders: TAXDOO has acquired accountDigital, a company specialized in e-commerce and known for its AI-powered accounting software – ushering in a new era of automation and transparency.

What does this mean for online merchants?
And what opportunities arise for tax advisors?

In an in-depth interview, the founders of both companies share exclusive insights into their vision – and explain why this merger is more than a technical integration. It’s a strategic milestone.

The Perfect Match: TAXDOO & accountDigital

When Dr. Roger Gothmann and Dr. Christian Königsheim founded TAXDOO nine years ago, automated VAT compliance in international e-commerce was seen as highly complex, even impossible. Tax advisors warned against it. But TAXDOO proved the opposite. “We went straight to the source – Amazon, Shopify. We extracted the transaction data directly, evaluated it automatically for tax purposes, and reported it abroad,” explains Gothmann. 

The goal: to simplify VAT compliance for online merchants so they can focus on their core business. Today, TAXDOO serves clients ranging from global players like L’Oréal to small Amazon sellers.

Enter accountDigital. Originating from the digital tax firm stb-digital, the company quickly evolved into a specialist in e-commerce accounting. “The complexity for an e-commerce merchant lies in their outgoing invoices. They operate like a global enterprise. And that needs to be reflected properly,” explains Stefan Gostomzik, founder and CEO of stb-digital. To tackle this, accountDigital developed its own platform – focused on automation, transparency, and AI-powered efficiency.

What began as a simple collaboration through a shared YouTube video quickly evolved into a forward-looking partnership. The motivation: Both companies work with similar data sources and build their own software – but at different stages of the process chain. TAXDOO automates international VAT processes. accountDigital digitizes accounting from the ground up. 

Together, they form an end-to-end solution previously unseen in the market. “We’re passionate about VAT,” adds Gothmann. “And the accountDigital team is obsessed with accounting. When those two obsessions meet – something big happens.” 

Why Now? The Perfect Moment for a Merger

“TAXDOO is simply the market leader,” says Gostomzik. “But we realized – we’re doing the same things. We’re both fetching data, building interfaces, developing software.” The logical next step: collaboration over duplication. 

Christian Königsheim highlights the strategic benefits: “We can now not only automate VAT-related data processing, but also take over our customers’ entire pre-accounting workflows. That significantly relieves the burden on tax advisors.”

For Nadine Jobst, Co-founder and Managing Director of accountDigital, the merger is a breakthrough: “We’ve never been able to advise beyond German tax law. Now, together with TAXDOO, we can provide international support – directly, efficiently, and without detours.”

What Changes for Online Merchants?

In short: everything – and yet nothing. Existing customers of both companies can continue using their familiar systems for now. Behind the scenes, however, a unified platform is taking shape. For online merchants, that means: a central platform for accounting and VAT – transparent, automated, and scalable.

“We believe that for e-commerce merchants, accounting and VAT compliance will eventually feel like they just take care of themselves,” says Gothmann. “Our vision is that merchants don’t have to deal with these topics at all.”

Gostomzik adds: “Merchants won’t have to worry about anything. Everything is handled from a single source. And that’s a huge advantage.”

What Does This Mean for Tax Advisors and Accountants?

Contrary to some fears, tax advisors are not going away – quite the opposite. “Tax advisors will always be needed,” Gothmann emphasizes. “But not for typing up receipts. We’re providing the data foundation that allows them to finally focus on real advisory work.” He adds: “No more data silos, no more isolated accounting or VAT systems – everything runs on a single platform.”

AI plays a central role. “Our AIs handle repetitive tasks like document processing,” says Gostomzik. “That means tax professionals can finally do what they’re meant to do – advise.”

The Vision: A System That Grows with You

The vision is clear: a unified platform that automates both accounting and VAT compliance, all built on a shared data foundation. A solution that supports both small merchants and large enterprises as they scale internationally – without data breaks or manual work.

Both TAXDOO and accountDigital already serve thousands of clients today. And both companies share the same goal: to meet merchants where they are and offer a platform that scales with their growth. “Scalability in e-commerce is huge,” says Nadine Jobst. “A good product can take off overnight – and now the infrastructure can grow right along with it.”

A Market Redefined

“There is no comparable solution on the market today,” says Christian Königsheim confidently. “There are software tools, and there are specialized tax firms – but no one combines both on one platform with this depth and breadth.”

Nadine Jobst adds: “This is a symbiosis the market hasn’t seen. The combination of accounting and VAT expertise in one platform – that’s unique.”

TAXDOO has acquired 100% of accountDigital. Around 30 employees will stay on board and work closely with TAXDOO teams in core areas like development, product, sales, and marketing. Familiar remote-first structures, technological autonomy, and a shared product vision will ensure that the integration delivers real value – not just on paper, but in everyday operations.

For customers, this means: a fully integrated workflow. For employees of both companies: new opportunities, more resources, and broader career paths. “I’ve always promised my team that they could grow as far as they wanted,” says Gostomzik. “And now, with TAXDOO, I can keep that promise.”

Conclusion: The Best of Both Worlds – Finally United

The acquisition of accountDigital by TAXDOO is not your typical merger. It’s a signal of transformation in the e-commerce industry: from fragmented processes to integrated platforms, from isolated solutions to true partnership.

Merchants benefit from maximum transparency and automation. Tax advisors gain clean data and a lighter workload. Together, they gain one thing above all: time for what really matters. “We want merchants to not even notice accounting and VAT compliance anymore,” Gothmann concludes. “That’s our vision: TAXDOO AND DONE.”

See the full interview with the founders – and get a firsthand look at how the future of accounting and VAT compliance is being redefined.