Thomson Reuters has acquired Additive, a San Francisco-based startup founded in 2023 that specializes in AI-powered tax document processing. Additive’s GenAI-native platform automates the ingestion and parsing of pass-through entity documents, including heavily-used federal tax forms like Schedule K-1, and extracts footnotes from K-1s, K-3s, and related forms—tasks that are traditionally laborious. The deal is aimed at enhancing Thomson Reuters’ existing tax workflow automation, including systems like GoSystem and SurePrep, helping tax and accounting professionals reduce manual hours and reallocate effort toward advisory tasks.
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