Transforming Tax Season with Self-Improving AI Technology

By Patricia Miller

May 27, 2026

2 min read

A collaboration between OpenAI and Thrive Holdings introduces an AI that accurately drafts tax returns, improving efficiency for accountants.

Tax season can be challenging for accountants, clients, and those tasked with sorting through complex K-1 data. However, a promising solution emerges from a collaboration between OpenAI and Thrive Holdings: an innovative self-improving AI system that prepares tax returns with an impressive accuracy of up to 97%. By building on OpenAI’s Codex technology, this Tax AI not only enhances the drafting process but also continuously improves its performance with each use.

#How Does This Tax AI Work?

Understanding how this system operates is crucial for any accounting professional looking to streamline their workflow. The AI functions through a feedback mechanism that leverages input from human accountants. When accountants correct errors in the AI's outputs, the system absorbs those insights, adjusting its algorithms accordingly. This self-improvement loop enables the AI to evolve based on practical experience, leading to increasingly accurate filings over time.

The pilot program involved over 30 accounting firms under the Crete Professional Alliance, focusing on complex tax scenarios primarily involving 1040 and 1041 filings. Initial results were compelling; right after the launch, only 25% of returns reached a 75% completion accuracy. Remarkably, within six weeks, this figure surged to 86%, demonstrating the effectiveness of the self-learning technology.

#Why Is This Important for Accounting Professionals?

For accountants, especially those who handle sophisticated tax returns laden with intricate K-1 data, this tool represents a significant advancement. Time is often wasted parsing through convoluted documentation, and errors in these scenarios can lead to costly repercussions. Practitioners utilizing this AI system have noted a reduction in preparation times by about one-third, alongside a throughput increase of approximately 50%. These statistics highlight a transformative shift in the efficiency of tax return processing.

#The Business Dynamics of the Collaboration

The relationship between OpenAI and Thrive Holdings extends beyond a simple licensing agreement. In December 2025, OpenAI took an equity position in Thrive Holdings, which paved the way for their engineers to work cohesively for six months on this project. An announcement on May 27, 2026, formalized the technical framework for the collaboration. Notably, Thrive Holdings retains the intellectual property rights to the products developed through this partnership, a distinctive trait in the realm of technology conglomerates where typically, the model developer maintains significant control over IP.

Important Notice And Disclaimer

This article does not provide any financial advice and is not a recommendation to deal in any securities or product. Investments may fall in value and an investor may lose some or all of their investment. Past performance is not an indicator of future performance.