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US Law Firms: Automating 90% of Accounts Payable with AI Tools

Streamlining invoice processing and payment

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Mirai Team

June 27, 2026

4 min read

US law firms handle a significant volume of invoices and payments, with the average firm processing over 500 invoices per month. Manually managing accounts payable can be time-consuming and prone to errors, leading to delayed payments and strained relationships with vendors. By implementing AI tools, law firms can automate up to 90% of their accounts payable process, freeing up staff to focus on higher-value tasks. This automation can result in significant cost savings, with some firms reducing their accounts payable processing costs by as much as 70%.

Introduction to Automated Accounts Payable

Automating accounts payable involves using machine learning algorithms to extract relevant data from invoices, such as vendor names, invoice numbers, and payment amounts. This data is then used to route invoices for approval and payment, with the entire process being tracked and recorded. By automating this process, law firms can reduce the risk of errors and ensure that payments are made on time. For example, a law firm in New York was able to reduce its average invoice processing time from 10 days to just 2 days after implementing an automated accounts payable system.

Key Components of Automated Accounts Payable

There are several key components to an automated accounts payable system, including invoice capture, data extraction, and workflow automation. Invoice capture involves using optical character recognition (OCR) or other technologies to extract data from invoices, while data extraction involves using machine learning algorithms to identify and extract relevant data. Workflow automation involves using business process management (BPM) tools to route invoices for approval and payment. By implementing these components, law firms can create a comprehensive automated accounts payable system that streamlines invoice processing and payment.

Benefits of Automated Accounts Payable

The benefits of automated accounts payable are numerous, including increased efficiency, reduced errors, and improved relationships with vendors. By automating the accounts payable process, law firms can reduce the time and resources required to process invoices, allowing staff to focus on higher-value tasks. For example, a law firm in California was able to reduce its accounts payable staff from 5 to 2 after implementing an automated accounts payable system, resulting in significant cost savings. Additionally, automated accounts payable can help law firms take advantage of early payment discounts, which can result in significant cost savings over time.

Real-World Example: Implementing Automated Accounts Payable

A mid-sized law firm in Chicago implemented an automated accounts payable system to streamline its invoice processing and payment. The firm used machine learning algorithms to extract data from invoices and route them for approval and payment. The results were significant, with the firm reducing its average invoice processing time from 7 days to just 1 day. The firm also reduced its accounts payable errors by 90%, resulting in improved relationships with vendors and reduced costs. The firm’s accounts payable manager noted that the automated accounts payable system had “revolutionized” the firm’s accounts payable process, allowing staff to focus on higher-value tasks.

Overcoming Common Challenges

Implementing an automated accounts payable system can be challenging, particularly for law firms with complex accounts payable processes. Common challenges include data quality issues, system integration, and vendor adoption. To overcome these challenges, law firms should work closely with vendors and implementation partners to ensure a smooth transition to the new system. For example, a law firm in Texas worked closely with its implementation partner to address data quality issues and ensure a successful rollout of its automated accounts payable system.

Best Practices for Implementing Automated Accounts Payable

To ensure a successful implementation of automated accounts payable, law firms should follow best practices such as defining clear goals and objectives, assessing current processes, and developing a comprehensive implementation plan. Law firms should also engage with stakeholders, including vendors and staff, to ensure a smooth transition to the new system. By following these best practices, law firms can ensure a successful implementation of automated accounts payable and realize the benefits of increased efficiency, reduced errors, and improved relationships with vendors.

Next Steps

To get started with automated accounts payable, law firms should take the following concrete next steps:

  • Assess their current accounts payable process to identify areas for improvement
  • Research and evaluate automated accounts payable solutions to determine the best fit for their firm
  • Develop a comprehensive implementation plan to ensure a smooth transition to the new system. By taking these steps, law firms can streamline their accounts payable process, reduce costs, and improve relationships with vendors.

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Written by Mirai Team

The Mirai team builds AI automation systems for Western SMBs. We write about what we're building, what we're learning, and what's actually working.