K1x is a patented, AI-powered platform that automates tax data processing for private markets and alternative investments. The platform digitizes, distributes, and decodes tax data from K-1s, 1099s, W-2s, and 990s, covering 410 tax forms across 47 state and federal jurisdictions. It is certified by the IRS and has been recognised as a Fast Company Most Innovative Company for 2025, as well as a winner of the US Fintech Award for Best Accounting Tech.
The company's product suite includes the K1 Aggregator®, K1 Creator®, and 990 Tracker®, all built on its Digital K-1™ platform. Together, these tools automate the extraction, validation, production, and delivery of tax data, connecting investors, accounting firms, tax software providers, and taxing authorities within an integrated workflow. K1x claims its platform cuts 90% of the manual work associated with Schedule K-1 processing.
K1x serves more than 40,000 organisations, including 44 of the 100 largest institutional investors in the United States and 20 of the top 25 accounting firms. Its customer base spans funds, family offices, fund administrators, tax-exempt organisations such as university endowments, and tax software vendors.