Law Firm Marketing Budget: How to Set the Number

Most law firms set a marketing budget the same way: they take last year's number, adjust it for how the year felt, and split it across whatever channels they already use. The result is a budget nobody can defend, because it was never tied to the one thing the firm actually wants, which is signed cases. A better budget starts at the end and works backwards.

Start with the case, not the channel

The question is not "how much should we spend on marketing?" It is "how many new cases do we want, and what are we willing to pay for each one?" Once you can answer those two questions, the budget mostly sets itself.

Begin with what a typical case is worth to your firm. Use your own closed files, not a guess: the average fee you collect on a case of the type you want more of, after case costs. Then decide the most you would ever pay to sign one of those cases. That ceiling is your target cost per signed case, and it is the number that keeps every later decision honest.

Work backwards to a monthly number

With a target cost per signed case in hand, the arithmetic is simple:

• Pick a case goal. How many new signed cases a month do you want from paid marketing?
• Multiply by your cost per signed case. That is the monthly budget the goal requires.
• Check it against cash flow. Injury fees arrive months or years after the spend, so the budget has to be one the firm can carry until the cases resolve.

If the number that comes out is more than the firm can carry, lower the case goal, not the cost per case. Squeezing the cost per case below what the market supports usually means buying worse leads, and worse leads sign at a lower rate, which pushes the real cost back up.

Your intake is part of the budget

A marketing budget only works if the firm can handle what it buys. Every lead needs a fast answer, a real conversation and a follow-up plan. If intake is slow or understaffed, extra spend just produces more leads that never sign, and your cost per signed case climbs while the budget looks fully spent.

Before raising spend, ask whether intake could handle more volume this month. If the answer is no, the best use of the next marketing dollar may be intake itself: better coverage after hours, faster callbacks or a cleaner intake form.

Splitting the budget across channels

There is no correct split that suits every firm, but there is a sensible order:

• Protect what already works. Referrals and repeat clients cost little and convert well. Keep a slice of the budget for staying in front of past clients and referring attorneys.
• Fund the channels that produce cases now. Paid search, local service ads and exclusive leads produce cases this quarter, which is what pays for everything else.
• Invest a smaller share in the long game. SEO, content and brand work take months to pay back, but they lower your blended cost over time.
• Test one new source at a time. Give each test a fixed amount and a fixed period, so you can tell whether it worked.

Concentrating the budget in a few channels you can measure well beats spreading it thinly across many you cannot. A small budget split six ways tells you nothing about any of them.

Track the right numbers

A budget is only as good as the reporting behind it. Track, for every channel:

• Spend
• Leads received
• Leads contacted, and how quickly
• Signed cases
• Cost per signed case
• Fees eventually collected

Cost per lead on its own is misleading. A cheap lead that never signs is expensive, and an expensive lead that signs often is cheap. Judge every channel on cost per signed case, and later on the fees those cases produce. Our guide to law firm KPIs covers the full set.

When to raise the budget, and when to cut it

Raise spend on a channel when its cost per signed case is comfortably under your ceiling, intake has room for more, and the firm can carry the extra cash until fees arrive. Raise it in steps and watch whether the cost per signed case holds, because the first cases in any channel are usually the cheapest.

Cut or pause a channel when its cost per signed case stays above your ceiling for long enough to be sure, after you have ruled out intake as the cause. A channel that looks bad because nobody called the leads back is an intake problem, not a marketing one.

Common mistakes

• Budgeting from last year. Last year's number tells you what you spent, not what a case is worth.
• Judging on cost per lead. It rewards cheap leads that never sign.
• Buying more than intake can answer. Unanswered leads are the most expensive kind.
• Changing everything at once. If three things change in a month, you cannot tell which one worked.
• Ignoring the rules. Advertising and paying for referrals are regulated. Check your state bar's version of ABA Model Rules 7.1 and 7.2 before committing budget to any new source.

The short version

Set your marketing budget from the cases you want and the most you will pay to sign one, not from last year's number. Make sure intake can handle what you buy, put most of the money into channels you can measure, and judge every channel on cost per signed case. For how the budget fits into the wider plan, see our law firm marketing plan guide.