How to Calculate Missed Call Revenue

Missed call revenue is best calculated as a funnel, because every missed call is not a sale and every caller is not even a prospect.

Formula — Missed calls multiplied by sales inquiry rate multiplied by appointment rate multiplied by show rate multiplied by close rate multiplied by average sale.

Example — A company has 80 missed calls in one month. Call review shows that 35 percent were new sales inquiries. That produces 28 potential leads. Sixty-two percent of qualified leads normally book, creating about 17.4 potential appointments. Ninety-three percent of booked appointments normally run, leaving about 16.2 completed estimates. A 22 percent close rate produces about 3.56 expected sales.

If the average sale is $8,500, expected revenue connected to that missed call pool is about $30,260.

Now make it more conservative — Not every missed caller would have stayed with the company even if answered. Apply a recovery factor. If leadership believes only 57 percent of those opportunities were realistically recoverable, the working estimate becomes about $17,248.

Use gross profit for decision making — If gross margin is 45 percent, that conservative estimate represents about $7,762 in gross profit before overhead.

Treat this number as a planning model, not a receipt — its job is to help you size the problem well enough to compare against what fixing it would cost.