Missed call revenue calculator
Formula: missed calls x close rate x average value x 12. The presets are starting assumptions, not benchmarks for your business; edit them to your own numbers.
What the research says
of customers buy from the company that responds to them first
Lead Connect, via Vendasta lead response research, 2020more likely to qualify a lead when the first contact happens within an hour, compared with waiting even one more hour
Harvard Business Review, The Short Life of Online Sales Leads, 2011median annual wage of a receptionist in the United States, before benefits, and only for one shift
U.S. Bureau of Labor Statistics, Occupational Outlook Handbook, 2024What the numbers mean for a service business
Put the figures together and the picture is consistent. Roughly six in ten calls to a small business go unanswered. Most of the people who could not get through do not try again. The business that answers first wins most of the time, and the value of a single missed call in a trade like home services is over a thousand dollars. A receptionist salary buys one shift of coverage, five days a week.
The calculator above is deliberately simple. It does not count the lifetime value of the customer, referrals, or the reviews a bad first impression costs. It is a floor. If the annual number it produces is larger than the cost of answering every call, the phone is the highest-return fix available to the business.
How SentraVoice closes the gap
SentraVoice puts an AI agent on your existing number that answers on the first ring, day and night, asks your intake questions, books into your calendar and sends you the summary before the caller has hung up. It is built and tuned by our team, and plans start at $299 per month. See the industry pages for exactly what the agent does on a call in your sector, or the comparisons for how it lines up against other services.
Sources
- 62% of calls to small businesses go unanswered. 411 Locals study of 85 small businesses, 2016
- 85% of callers who cannot reach a business will not call back. BIA/Kelsey, cited by Forbes
- 78% of customers buy from the company that responds to them first. Lead Connect, via Vendasta lead response research, 2020
- 7x more likely to qualify a lead when the first contact happens within an hour, compared with waiting even one more hour. Harvard Business Review, The Short Life of Online Sales Leads, 2011
- $1,200 average revenue lost per missed call for a home services business. Invoca, 2024
- 28% average call abandonment rate measured across 225,000+ businesses. CallRail, 2026
- $37,230 median annual wage of a receptionist in the United States, before benefits, and only for one shift. U.S. Bureau of Labor Statistics, Occupational Outlook Handbook, 2024