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arxiv:2510.08886

FinAuditing: A Financial Taxonomy-Structured Multi-Document Benchmark for Evaluating LLMs

Published on Oct 10
· Submitted by Yan Wang on Oct 14
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Abstract

FinAuditing is a benchmark for evaluating LLMs on structured financial auditing tasks, revealing their limitations in handling taxonomy-driven, hierarchical financial documents.

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The complexity of the Generally Accepted Accounting Principles (GAAP) and the hierarchical structure of eXtensible Business Reporting Language (XBRL) filings make financial auditing increasingly difficult to automate and verify. While large language models (LLMs) have demonstrated strong capabilities in unstructured text understanding, their ability to reason over structured, interdependent, and taxonomy-driven financial documents remains largely unexplored. To fill this gap, we introduce FinAuditing, the first taxonomy-aligned, structure-aware, multi-document benchmark for evaluating LLMs on financial auditing tasks. Built from real US-GAAP-compliant XBRL filings, FinAuditing defines three complementary subtasks, FinSM for semantic consistency, FinRE for relational consistency, and FinMR for numerical consistency, each targeting a distinct aspect of structured auditing reasoning. We further propose a unified evaluation framework integrating retrieval, classification, and reasoning metrics across these subtasks. Extensive zero-shot experiments on 13 state-of-the-art LLMs reveal that current models perform inconsistently across semantic, relational, and mathematical dimensions, with accuracy drops of up to 60-90% when reasoning over hierarchical multi-document structures. Our findings expose the systematic limitations of modern LLMs in taxonomy-grounded financial reasoning and establish FinAuditing as a foundation for developing trustworthy, structure-aware, and regulation-aligned financial intelligence systems. The benchmark dataset is available at Hugging Face.

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edited 3 days ago

FinAuditing is a taxonomy aligned and structure aware benchmark designed to evaluate large language models (LLMs) on financial auditing reasoning. It is built from real US GAAP compliant XBRL filings and defines three complementary subtasks: FinSM for semantic consistency, FinRE for relational consistency, and FinMR for numerical consistency. These tasks jointly assess models’ ability to reason over hierarchical and interdependent financial documents. Experiments on 13 state of the art LLMs reveal substantial performance gaps, highlighting the challenges of structured and taxonomy grounded financial reasoning and underscoring the need for more trustworthy and regulation aligned financial intelligence systems.finauditingdrawio (1)

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