How is the annual lost revenue calculated?

Annual lost revenue = (calls per day × 365 × percent of calls you miss) × (percent of missed calls that would convert) × average job value. The calculator does this live as you change the inputs.

What's a typical answer rate for a small service business?

Studies put the average small-business call answer rate around 38%, meaning roughly 6 in 10 calls go unanswered — and about 62% of callers who reach voicemail simply call a competitor instead of leaving a message.

How do you stop losing revenue to missed calls?

An AI voice agent answers every call 24/7 — including after-hours and overflow — books the appointment or captures the lead, and routes urgent calls to a human. It recovers the missed-call revenue this calculator quantifies, usually for a fraction of one recovered job per month.

A SuperDupr Framework

The Missed-Call Cost Model

Every unanswered call is lost revenue. The Missed-Call Cost Model quantifies it: missed calls per year × the share that would have closed × your average job value. Enter your numbers below to see your annual leak.

Calls per day % of calls you answer % of missed calls that would book Average job value ($)

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Missed calls / year

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Lost revenue / month

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Lost revenue / year

Why missed calls cost so much

Most service businesses answer only about 38% of their calls, and roughly 62% of callers who hit voicemail call a competitor instead of leaving a message. For a typical small business that adds up to an estimated $126,000 in lost revenue per year (Aira, 2026). After-hours and overflow calls are the biggest leak — exactly when no one is at the desk.

How to stop the leak

An AI voice agent answers every call 24/7 — books appointments, captures lead details, and routes urgent calls to a human — recovering the revenue this model quantifies. Most service businesses break even after recovering a single job.

Missed-Call Cost Model — FAQ

: The Missed-Call Cost Model is a simple formula for the revenue a service business loses to unanswered calls: missed calls per year × the share that would have closed × your average job value. It turns an invisible problem (calls that ring out) into a dollar figure you can act on.
: Annual lost revenue = (calls per day × 365 × percent of calls you miss) × (percent of missed calls that would convert) × average job value. The calculator does this live as you change the inputs.
: Studies put the average small-business call answer rate around 38%, meaning roughly 6 in 10 calls go unanswered — and about 62% of callers who reach voicemail simply call a competitor instead of leaving a message.
: An AI voice agent answers every call 24/7 — including after-hours and overflow — books the appointment or captures the lead, and routes urgent calls to a human. It recovers the missed-call revenue this calculator quantifies, usually for a fraction of one recovered job per month.

Stop losing jobs to missed calls

We build AI voice agents that answer every call, book the work, and recover the revenue this calculator just showed you.

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