Law Firm Accounting: Designing Your Ideal System

While law firms share many operational similarities with other small businesses, they face a distinct set of financial management challenges. As Mark explained during the podcast, “Ultimately, running a law firm is like running any other business. It’s still important to keep track of your income, expenses, and liabilities while managing your costs.” However, while leading a law firm is similar to other businesses, there are additional considerations.

Law firms must navigate three primary accounting complexities that set them apart:

Trust Accounting Compliance: This is perhaps the most critical difference. Attorneys have legally mandated accounting obligations specifically related to their client trust accounts. In Arizona and many other states, mismanagement of client trust accounts ranks among the top reasons attorneys face sanctions. The challenge is compounded by the fact that there isn’t a straightforward, easy-to-follow system for managing these accounts, and many attorneys arrived at law practice with liberal arts backgrounds rather than financial training.

Irregular Cash Flow Patterns: Depending on how you invoice and bill clients, cash flow can be unpredictable. Some firms working on contingency or class action cases might have only one or two active matters at a time, with payment potentially delayed for two or three years. As Mark noted, “for these firms, having really good accounting is even more essential because they might need to get some sort of gap funding or line of credit that they need to access.”

Complex Fee Arrangements: Many law firms deal with varying degrees of complexity in their fee allocation agreements and revenue sharing arrangements, requiring careful tracking of income and matters by attorney, as well as referral sources.

One of the most persistent problems law firms face is collecting on their invoices. According to the Clio Legal Trends Report referenced in the podcast, the average outstanding bill sits unpaid for 86 to 90 days. That means a bill sent out on February 1st might not generate actual revenue until May 1st, creating a significant cash flow strain.

Mark shared several evidence-based strategies for improving collection rates:

Set Clear Expectations Upfront: Many firms fail to establish clear payment expectations with clients from the beginning. When clients receive their first bill without proper preparation, they’re often shocked, even though the legal work was never intended to be free.

Leverage Technology for Easy Payments: Statistics show that firms accepting credit card payments and sending electronic payment requests collect significantly faster. Modern practice management tools offer multiple payment modalities, including QR codes and direct payment links. As Mark pointed out, “Imagine if you had to write a check. I don’t even – I’d have to ask my wife where our checkbook is. I don’t even know if we have one in 2025.”

Bill Immediately After Engagement: The best time to bill a client is when they’re most satisfied with your work. The longer you wait after completing an engagement, the more that positive feeling fades, and clients begin questioning the value they received. “That is the time when they’re most likely to pay and pay quickly,” Mark emphasized.

One area where firms consistently leave money on the table is managing cost reimbursements. Many law firms lack good internal processes for tracking and billing back case-related expenses. This isn’t just about a few dollars here and there – over time, these unreimbursed costs can add up to substantial revenue leakage that directly impacts your bottom line.

The solution lies in establishing robust financial record-keeping practices that capture expenses as they occur. Tracking costs and time in real-time, especially using cloud-based tools and mobile apps, dramatically increases the likelihood of cost recovery and accurate billing.

Since this podcast recording, Clio has released its 2025 Legal Trends Report, and the findings underscore that collection challenges remain one of the most pressing issues facing law firms today. The data reveals that the average law firm still has approximately 93 days worth of work that is either unbilled or unpaid at any given time – representing nearly three months of trapped revenue.

Even more concerning, the report shows that invoices lose 12-15% of their value for every 30 days they remain unpaid. This means that the 86-90 day collection period Mark referenced in the podcast isn’t just a cash flow inconvenience – it’s actively eroding firm profitability. When you factor in the time value of money, opportunity costs, and the increased likelihood of non-payment as invoices age, the real cost of delayed collections becomes staggering.

The 2025 report also highlights that 68% of law firms cite fee collection as a major operational challenge, making it clear that the strategies Mark discussed – sending bills immediately, accepting electronic payments, and leveraging technology – are more critical than ever for firm financial health.

A recurring theme throughout the podcast was the importance of using the right combination of software tools. Mark was emphatic about one point: all-in-one solutions that promise to handle both your legal practice management and your business accounting rarely excel at either function.

“We believe that if you can get the information you need from one system, you don’t need it in all places,” Mark explained. The key is understanding which system serves which purpose.

Practice Management Software (such as Clio or MyCase) serves as your micro-level data repository. This is where you maintain your actual engagement details, meetings, specific client trust ledgers, and case-related information.

Accounting Software (such as QuickBooks Online or Xero) serves as your macro-level data hub. This tracks your total legal fee income, overall case-related expenses, and total client trust liability.

Software to help with AR (such as Collbox) While practice management and accounting software form the foundation of your financial infrastructure, many firms benefit from adding specialized accounts receivable management tools to address the persistent collection challenges highlighted in the 2025 Legal Trends Report. Collbox is a tool we recommend, as they specialize in helping law firms get paid quickly. 

For KORE’s clients, the most effective combination for small, cloud-based law firms is Clio for practice management paired with QuickBooks Online for accounting. This approach eliminates duplicate data entry by ensuring you’re entering information in the right place from the start.

The key is recognizing that different tools serve different purposes. Your practice management software manages cases and client interactions, your accounting software tracks financial performance, and specialized collections tools focus on converting outstanding invoices into actual cash in your bank account. By leveraging actionable insights from all these systems, you can make better strategic decisions about your firm’s direction.

Beyond day-to-day accounting practices, Mark stressed the importance of maintaining financial reserves. Law firms should aim to keep at least three months of operating expenses in savings. This runway provides crucial breathing room during slow periods or when dealing with delayed payments.

However, this doesn’t mean letting cash sit idle in a low-interest checking account. High-yield savings accounts from reputable institutions now offer competitive interest rates, allowing your reserves to work for you while remaining accessible when needed.

Regular financial reviews should also include evaluating discretionary expenses, including underutilized marketing spend and software subscriptions you’re not fully leveraging. These periodic audits help ensure your resources are allocated to activities that genuinely support your firm’s growth.

Throughout the conversation, it became clear that effective law firm accounting isn’t just about compliance – it’s about creating systems that provide peace of mind so attorneys can focus on practicing law rather than managing spreadsheets.

As Mark described KORE’s approach: “We really love helping attorneys be less stressed and more on top of their accounting.” Working with an outsourced accounting partner who specializes in law firms means benefiting from their accumulated experience, learning from mistakes they’ve already made with other clients, and accessing deep expertise in client trust account management and compliance.

The right accounting system, supported by specialized expertise, transforms financial management from a source of stress into a strategic advantage. When your books are organized, your trust accounts are compliant, and you have clear visibility into your firm’s financial health, you can make informed decisions about hiring, expansion, case selection, and long-term planning.

Designing your ideal accounting system doesn’t have to be overwhelming. Start by assessing where your firm stands today. Are you collecting payments promptly? Do you have the right technology stack in place? Are you leaving money on the table with unbilled expenses? Is your trust accounting fully compliant?

If you’re unsure about any of these questions, consider signing up for our Financial Health Assessment. This comprehensive evaluation will help you identify gaps in your current system and provide a roadmap for building the accounting infrastructure your firm needs to thrive.

Remember, every minute you spend worrying about your books is a minute you’re not spending on your clients or growing your practice. With the right systems and support in place, you can transform your firm’s accounting from a necessary burden into a powerful tool for sustainable growth and profitability.