Flexport reduces U.S. customs filing error rate to 0.2% with AI compliance audit agent

For U.S. customs brokers and importers, 2025 marked an unprecedented compliance stress test. Tariff policy changed with extraordinary frequency throughout the year, making it nearly impossible for customs teams to keep filings current through manual processes. The customs industry formally declared 2026 the 'Year of the Audit,' acknowledging that filing errors had reached an all-time high while government enforcement activity was simultaneously intensifying. At stake were not only potential penalties and supply chain delays, but also the inverse problem: companies were systematically overpaying tariffs with no mechanism to identify or recover those funds. In a sector where a single misclassified entry can trigger audits and downstream disruptions, the cost of inaccuracy had become unsustainable at scale.

Flexport developed the 'Audit Your Customs Broker' AI agent to conduct automated compliance audits across a company's complete history of customs entries and identify mistakes and compliance errors. Flexport first piloted the agent on its own entries. The tool is now available free of charge to any importer wanting to audit their existing broker's work. Alongside the auditor, Flexport built a tariff refund calculator, initially launched in January 2026 to estimate potential IEEPA refunds ahead of the U.S. Supreme Court ruling. Following the U.S. Supreme Court ruling against IEEPA tariffs, the calculator was updated to prepare customers for potential refund claims.

Flexport reduced its own U.S. customs filing error rate to 0.2%, a figure CEO Ryan Petersen estimates represents a 10X improvement over any other customs broker in the market.

Key outcomes:

• 0.2% filing error rate achieved on Flexport's own entries after piloting the AI agent on them
• 10X improvement over estimated competitor error rates, per Flexport's market assessment
• Full historical audit coverage: the AI auditor can audit all past entries for errors, and Flexport says it can instantly audit them and file corrections
• Refund calculator updated after the Supreme Court ruling to prepare customers for potential IEEPA refund claims

• Piloting AI compliance tools on internal operations before customer rollout provides benchmark data and validates accuracy claims with credibility that self-reported metrics cannot.
• In high-volatility regulatory environments, manual compliance processes cannot keep pace with policy change cycles measured in weeks — automation becomes a structural requirement, not an efficiency gain.
• AI audit agents should target full historical entry libraries, not just forward-looking filings — past errors represent both unresolved liability and recoverable overpayment.
• Linking error detection directly to financial recovery transforms compliance from a cost center into a measurable revenue-recovery function, strengthening the business case for AI investment.