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Missed Call Revenue Calculator for Law Firms

A typical law firm fielding 240 inbound calls a month and missing 26% of them loses an estimated $57,658 a month — about $691,891 a year — at a $4,200 average ticket and a 22% close rate. A 24/7 AI receptionist that holds the miss rate to 4% recovers the bulk of it. The numbers below are pre-loaded with law firms benchmarks — change any of them to match your shop.

Tune the inputs

Math updates live — there is no calculate button. Defaults are law firms benchmarks.

240

Total inbound volume from your phone system.

$4,200

Revenue per closed job or booking.

22%

% of recovered calls that book.

26%

After-hours, hold-hangup, voicemail-no-callback.

Missed calls / month
62

26% of 240 inbound

Monthly revenue lost
$57,658

missed × $4,200 × 22% close

Annual revenue lost
$691,891

At your current miss rate

Today (no AI)
$691,891

Annual lost at 26% miss

With AI receptionist
$106,445

Annual lost at 4% miss floor

Annual recovered
$585,446

What capping the miss rate is worth

Benchmark basis: Clio Legal Trends Report 2025; ABA Model Rule 1.6: Confidentiality of Information. The 4% miss floor is our deployed-receptionist operating target; real performance varies ±2 pts by call complexity.

Built for law firms

SMB firms apply the same mechanism through three workflows: client follow-up automation, matter-triage dashboards, and engagement-letter generators. Typical firm of 3 attorneys sees equivalent billable value of ~$50K/month returned.

Want the full ROI picture (time saved + net return)? Run the AI ROI Calculator for Law Firms.

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