Financial Forecasting for Law Firms: How to Plan Growth with Confidence

Financial forecasting is one of the most powerful tools law firm owners can use to gain clarity on their finances and plan for sustainable growth. In this episode of The Legal CFO, Ryan Kimler, founder of Net Profit CFO, breaks down the importance of forecasting, how it differs from budgeting, and how attorneys can use it to avoid cash flow shortages and prepare for the future.

What is financial forecasting and how does it differ from budgeting?

Ryan Kimler explained that financial forecasting is about looking ahead and building into the future by setting expectations for revenue and expenses. Unlike budgeting, which often feels restrictive and limiting, forecasting is flexible and adaptable.

For example, if a law firm sets a budget of $75,000 for marketing in 2026, it becomes a hard limit. By the time the firm surpasses that amount, it’s too late to adjust. Forecasting, on the other hand, allows law firm owners to change numbers as the year progresses and make strategic adjustments to ensure that overspending or shifts in expenses are accounted for in other areas of the business.

Why is forecasting essential for law firms?

While forecasting is important for all businesses, Ryan Kimler emphasized that it is particularly vital for law firms. Without it, running a practice is like driving a car without a windshield—you’re left relying only on rearview and side mirrors, which show the past rather than the road ahead.

Forecasting helps attorneys anticipate challenges before they arrive. If revenue projections fall short, owners can pivot sooner, rather than waiting until the firm runs out of cash. Even if forecasts aren’t 100% accurate, getting them 70–90% correct is far better than not forecasting at all.

The Key Data Every Firm Needs to Build a Forecast

According to Ryan Kimler, law firms should start by understanding four critical areas:

1. Revenue – What is consistently coming in each month.
2. Expenses – Both fixed and variable, including rent, payroll, subscriptions, bar dues, malpractice insurance, and software.
3. Debt Payments – Loan repayments, whether from COVID relief programs, business loans, or other obligations.
4. Owner’s Distributions – What the firm owner is paying themselves.

Having a firm grasp on these numbers provides the foundation for a reliable financial forecast.

How can forecasting help law firms make growth decisions?

Financial forecasting supports both big and small growth decisions. For example, law firm owners may use it to determine whether they can afford to hire a new associate, take on more office space, or expand into new marketing channels. Even seemingly small expenses—such as $2,000 to $3,000 per month for additional space—should be evaluated against forecasts to ensure long-term financial stability.

How can forecasting help avoid cash flow shortages?

Ryan Kimler highlighted that forecasting is one of the best ways to prevent cash flow problems. By clearly identifying fixed expenses, payroll, debt payments, and owner distributions, attorneys can calculate the minimum amount of revenue needed to keep the firm running smoothly.

Forecasting also allows firm owners to recognize revenue delays before they happen. For example, if fewer cases are signed one month, the firm may experience reduced income two to three months later. With forecasting, attorneys can see this in advance and take corrective action, such as ramping up marketing efforts.

How often should law firms review their forecasts?

Ryan Kimler recommended reviewing forecasts quarterly at a minimum. However, any major event—such as hiring a new lawyer, losing a key attorney, or a significant client reducing their workload—should trigger an immediate review. Forecasting should not be a “set it and forget it” task but an ongoing process that evolves with the firm’s circumstances.

How do seasonal trends and case cycles factor into forecasts?

Law firms often experience seasonal fluctuations and case cycles that affect revenue. Ryan Kimler advised analyzing historical data to identify high and low months. For example, one client who specialized in patents had extreme fluctuations based on when large corporations signed on and completed projects. By identifying these cycles, Ryan helped the client fill gaps in slower months by targeting new clients ahead of time.

For newer firms without historical data, forecasting becomes more challenging but even more critical. In such cases, firms should review forecasts more frequently and consider forecasting only a quarter at a time to reflect rapid changes and growth.

What are the best tools and practices for forecasting?

While there are forecasting tools available, Ryan Kimler noted that none are perfect. QuickBooks offers plug-ins, but he still recommends Excel as one of the best ways to forecast. Building numbers manually forces law firm owners to actively engage with their data rather than relying on automated assumptions.

He explained that although some software allows firms to apply blanket assumptions (such as 8% growth), it doesn’t necessarily reflect reality. By working directly in Excel, attorneys can better understand their firm’s financial trends.

What are the first steps for law firms to begin forecasting?

For law firms ready to start forecasting, Ryan Kimler suggested beginning with these core steps:

• Identify Fixed Expenses – Rent, subscriptions, payroll, bar dues, insurance, and other recurring obligations.
• Account for Debt Payments – Loan repayments that must be covered monthly.
• Plan for Owner Distributions – Setting realistic compensation goals for the firm owner.
• Review Revenue History – Use past performance and current pipelines to project income.

From there, law firm owners can layer in marketing changes, staffing adjustments, and growth initiatives to see how these decisions impact their forecasts.

Final Thoughts

Ryan Kimler stressed that financial forecasting is not only about managing numbers but also about giving law firm owners control and confidence. By anticipating cash flow needs, identifying growth opportunities, and making adjustments in real time, attorneys can scale their firms strategically while avoiding financial stress.

To learn more about financial forecasting for law firms or to get support in building a forecast for your practice, visit NetProfitCFO.com.