Crowe adopts Thomson Reuters Additive to modernize K-1 processing 

CHICAGO (May 19, 2026) – Crowe LLP, a leading public accounting and consulting firm, today announced it has adopted Additive from Thomson Reuters, a global content and technology company. This AI-powered solution is designed to transform unstructured Schedule K-1 data into structured, usable information, helping improve speed, accuracy, and client service across Crowe’s tax practice.

As firms across the tax profession navigate rising complexity, tighter deadlines, and growing demand for efficiency, Crowe is investing in AI technology to modernize one of the most persistent challenges in tax work, K-1 processing. By adopting Additive, Crowe is advancing a broader strategy to reduce manual effort, improve workflow consistency, and create more capacity for analysis and judgment, while delivering more timely, accurate insights to clients.

“As the tax environment becomes more complex and data-intensive, we see modern AI tools as a key part of how we innovate and drive strong client outcomes,” said Jeffrey Mull, partner and Tax Markets Leader at Crowe. “With Additive, we can turn complex, unstructured K-1 data into usable information more efficiently, allowing our teams to spend less time on manual aggregation and more time focusing on analysis and insights, and to provide clients with clearer, more timely answers, especially during compressed compliance timelines.”

Schedule K-1s are used to report investor allocations from flow-through entities, such as partnerships and S corporations, to individual owners. Because each form is tailored for each investor and often involve complex calculations, the preparation can be challenging for organizations with many owners or multistate operations, especially when data is often received in unstructured formats and traditionally processed through manual, spreadsheet-based workflows.

For tax professionals, ingesting and processing K-1 documents can be highly manual and time-intensive, which can slow down downstream processes during tight compliance cycles. Additive addresses that challenge by using a GenAI-native platform to ingest and structure data from complex K-1 documents efficiently and at scale. That structured output feeds into Crowe’s downstream partnership calculation engines and connects with other solutions across the firm’s technology ecosystem, including Thomson Reuters GoSystem Tax.

“Leading firms are looking for AI solutions that fit into real workflows and deliver measurable impact,” said Erica Butcher, General Manager, Tax, Audit & Accounting Professionals at Thomson Reuters. “Crowe’s adoption of Additive shows how firms can take a focused, practical approach to using AI to improve how work gets done and strengthen client outcomes.”

Before adopting the technology, Crowe conducted a cross-functional pilot across its tax practice, including specialists from international, private equity, state and local, and global and high-net-worth individual tax services. The pilot validated the platform’s ability to automate complex data extraction and improve the quality, speed, and consistency of service delivery.

To learn more about Crowe’s approach to AI and tax transformation, visit: https://www.crowe.com/services/tax/ai-and-tax-transformation

About Crowe
Crowe LLP is a public accounting and consulting firm that uses its deep industry expertise to provide audit, tax, advisory, and consulting services to public and private entities. Crowe is recognized by many organizations as one of the best places to work in the U.S. As an independent member of Crowe Global, one of the largest global accounting networks in the world, Crowe serves clients worldwide. The network consists of more than 200 independent accounting and advisory services firms in more than 130 countries around the world.

Thomson Reuters
Thomson Reuters (TSX/Nasdaq: TRI) informs the way forward by bringing together the trusted content and technology that people and organizations need to make the right decisions. The company serves professionals across legal, tax, accounting, compliance, government, and media. Its products combine highly specialized software and insights to empower professionals with the data, intelligence, and solutions needed to make informed decisions, and to help institutions in their pursuit of justice, truth, and transparency. Reuters, part of Thomson Reuters, is a world leading provider of trusted journalism and news. For more information, visit tr.com.