The Question Every Managing Partner Asks
How much should we spend on marketing? It’s the first question in every law firm marketing budget discussion and the least well answered.
The standard advice is 8 to 12% of revenue. That is meaningless without context. Eight percent of a $50 million firm is $4 million. Eight percent of a $5 million firm is $400,000. Those two law firm marketing budgets operate in entirely different competitive environments.
We have a better answer. We track what 210 markets’ worth of personal injury firms actually spend. Not recommendations. Not survey averages. Actual monthly budgets by firm, market, and channel.
What Firms Actually Spend: By Market Size
The first variable is market size. A law firm advertising budget by DMA in Los Angeles looks nothing like one in Spokane.
Major DMAs ($10M+ monthly legal ad spend):
Large DMAs ($5M-$10M):
Mid-size DMAs ($2M-$5M):
The pattern is clear. To lead a major market, a firm needs $1 million to $4 million monthly. To be in the top five, $400,000 to $1 million. To have meaningful presence, $100,000 to $400,000.
What Market Leaders Spend: The Real Numbers
Knowing what the leaders spend puts your own budget in context.
Two facts stand out. First, every market leader spends at least $1 million monthly. Second, their channel strategies vary enormously. Thomas J. Henry runs 91.5% traditional. Thompson Law runs 69% streaming. Both are top-five advertisers in their markets. These firms are part of the top 10 that control 29% of national legal ad spend.
The channel mix matters more than the total budget.
How to Set a Law Firm Advertising Budget
The data suggests a framework based on competitive position, not revenue percentage.
To dominate a market (top one to two position): Budget for 15 to 25% of total market spend. In a $7 million market like Houston, that means $1 million to $1.75 million monthly. In a $3 million market like Boston, $450,000 to $750,000 monthly.
To compete in the top five: Budget for five to 10% of market spend. Houston: $350,000 to $700,000 monthly. Boston: $150,000 to $300,000 monthly.
To establish meaningful presence: Budget for two to five percent of market spend. Houston: $140,000 to $350,000. Boston: $60,000 to $150,000.
To enter a market on CTV: Budget for 10 to 30% of the CTV-specific spend. In Dallas ($665K monthly CTV), that is $65,000 to $200,000. In Washington DC ($78K monthly CTV), $25,000 to $50,000. This makes you a significant CTV advertiser in your market without competing against the broadcast leaders’ full budgets.
The right budget depends on your market’s competitive structure, not a percentage of revenue. The CTV budget by market size guide breaks down minimum thresholds for streaming by DMA tier.
Where the Budget Should Go: Channel Allocation
The data shows that channel allocation drives results more than total budget. Here are three proven models from the data.
Broadcast-first (for firms with $1M+ monthly):
This is the Thomas J. Henry / Jim Adler model. It works when you can sustain the frequency required for broadcast dominance. Below $1 million monthly in a major market, broadcast alone does not reach the frequency threshold.
Streaming-forward (for firms with $200K-$1M monthly):
This is the Thompson Law model. You maintain broadcast for mass reach but lead with CTV for targeting precision. This model works best in low-CTV markets (Dallas 10%, Boston 9%, DC 3%) where streaming competition is minimal.
CTV-dominant (for firms with $50K-$200K monthly):
This is the challenger model. You cannot compete on broadcast at this budget level, but $60,000 monthly on connected TV services in most markets makes you a meaningful streaming advertiser. Adding law firm search advertising at $15,000 to $25,000 captures the high-intent searches CTV generates. Pair with targeted radio for frequency.
The Hidden Budget: What CTV Costs Per Market
The cost of meaningful CTV presence varies dramatically by market because CTV adoption determines how much competition you face for streaming inventory.
In Washington DC, $50,000 monthly captures approximately 64% of all legal CTV impressions. In Atlanta, the same budget captures less than 1%. The ROI of CTV depends entirely on market context.
For a CFO evaluating where to allocate a law firm advertising budget, this data makes the decision concrete. Understanding the real ROI numbers behind each marketing channel turns budget allocation from guesswork into math. And knowing the actual cost per lead by practice area makes the comparison concrete. A modest CTV investment in a low-adoption market produces outsized share of voice. The same investment in a high-adoption market barely registers.
Budget Planning: The 12-Month View
Law firm advertising budgets should be planned quarterly and committed annually. Here is a 12-month framework.
Q1 (January-March): Establish baseline. Set channel allocation based on market data. Begin CTV if not already running. Broadcast rates typically lower post-holidays.
Q2 (April-June): Scale what works. CTV attribution data from Q1 informs Q2 allocation. Personal injury claims peak in spring/summer. Increase frequency.
Q3 (July-September): Pre-election planning. Political advertising drives up broadcast CPMs in Q4. Lock broadcast rates now. Shift incremental budget to CTV where political ads do not compete.
Q4 (October-December): Political season. Broadcast CPMs spike 30 to 50% in election years as political ads flood inventory. CTV rates remain stable. Firms with CTV infrastructure in place gain relative advantage as broadcast competitors pay premium rates.
The Budget Your Competitors Run
The most useful data point is not a national average. It is what the top five firms in your specific market spend on each channel.
That data is what separates law firm advertising budgets built on evidence from those built on guesswork. When you know that Thomas J. Henry puts $1.86 million monthly into Dallas broadcast, you know not to compete there with $200,000. When you know that Dallas CTV totals $665,000 monthly and only Thompson Law ($177K) runs meaningful streaming, you know where $100,000 produces maximum impact.
Every market has these dynamics. The firms that budget based on their market’s specific competitive structure outperform those that follow generic benchmarks. Budget drives law firm growth, but only when it’s allocated to the right channels.
