Cost per case calculator

Calculates from the numbers you enter. Accuracy depends on tracking spend and signed cases correctly by channel. For a single-channel deep dive, our law firm ROI calculator also shows cost per lead and conversion rate. See our full disclaimer.

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Channel name

Spend for this period ($)

Cases signed from this channel

Your blended cost per case

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A legal marketing consultant can review your blended breakdown and help shift budget toward your best-performing channels.

Why does a blended cost per case matter more than a single channel's number?

Looking at 1 channel in isolation can be misleading, since a firm's overall marketing efficiency depends on the mix, not any single line item. A blended cost per case, calculated as total marketing spend across every channel divided by total signed cases from all channels combined, shows the true average cost to acquire a client regardless of which channel gets credit. This matters because firms sometimes fixate on the cheapest-looking channel's cost per lead while ignoring that a pricier channel actually delivers a lower cost per signed case once conversion rates are factored in, a distinction our law firm ROI calculator breaks out in more detail for a single channel.

Comparing the blended figure against each individual channel also reveals which channels are dragging the average up or down. A channel with a high cost per lead but a strong conversion rate can have a lower cost per case than a cheap-lead channel that converts poorly, and that comparison is only visible once every channel's actual signed-case numbers are laid side by side. Once you've identified your best-performing channel here, our Google Ads budget planner can help you plan additional budget for it.

How many channels should a typical firm be tracking separately?

Most firms running any meaningful marketing program track at least 3 to 5 distinct channels, commonly some mix of paid search, SEO or organic search, referrals, Local Service Ads, and social media. Tracking fewer than this often means a firm can't tell which spend is actually working, while tracking channels its intake process can't distinguish between defeats the purpose of separate tracking in the first place.

Should referral cases be included in a blended cost per case calculation, even with no direct spend?

It depends on what the calculation is meant to answer. Including referrals with $0 recorded spend will pull the blended average down, which is accurate if the goal is measuring true overall client acquisition efficiency, but can obscure the actual paid-channel picture if the goal is deciding where to allocate ad budget specifically. Running the calculation both with and without unpaid channels gives a more complete picture than either number alone, and confirming referral case values with our legal fee comparison tool helps put that channel's contribution in context.

What's a warning sign that a channel should be paused rather than optimized further?

A channel whose cost per case consistently exceeds what the case type can reasonably support, especially after multiple optimization attempts, is often a stronger candidate for pausing and reallocating budget than continued incremental tweaking. Continuing to fund an underperforming channel out of sunk cost, rather than reallocating that spend to a channel with proven lower cost per case, is one of the more common inefficiencies in law firm marketing budgets.

Frequently asked questions about blended cost per case

Yes, particularly for lower-volume channels where a single month's signed case count can swing the average significantly just from normal variance. Looking at cost per case over a rolling 3 to 6 month window generally gives a more reliable picture than judging any single month in isolation.

For the most accurate picture, yes, since a channel producing many unqualified leads that consume significant intake staff time is more expensive than its raw ad spend alone suggests. A simpler version using only direct ad spend is still useful for a quick comparison, but a fully loaded number gives a truer picture of each channel's actual cost.

This is a genuinely hard attribution problem without a single universally correct answer. Common approaches include crediting the first channel that generated contact, the last channel before signing, or splitting credit proportionally across the channels involved. Whichever method is chosen, applying it consistently matters more than which specific method is used, so the numbers stay comparable over time.

Not necessarily by itself, since a lower blended number could also reflect a shift toward lower-value case types that happen to be cheaper to acquire. Cost per case should generally be evaluated alongside average case value and total revenue, not as a standalone metric, since minimizing cost per case at the expense of case quality can actually hurt overall firm revenue.

Monthly recalculation is common practice, giving a firm enough data points across a year to spot seasonal patterns and channel trends while still catching a struggling channel early enough to make a budget adjustment before significant spend is wasted.