Most business owners know they're missing calls after hours. What they don't know is the exact dollar figure. This calculator does the math in real time — enter your numbers and see your monthly and annual revenue at risk from missed calls.
Missed Call Revenue Calculator
Adjust the inputs below — results update instantly.
Total calls your business receives per month
Industry avg for HVAC: 62%
Affects which plan is recommended for your call volume
Annual Revenue at Risk
From calls you're already paying to generate
Monthly Revenue at Risk
$9,939/mo
After-hours calls/mo
50
Lost to voicemail
42
$11,145/mo net gain
$11,342 recovered — $197 total cost· Est. 144 min/mo
Plan Comparison
| Plan | Cost | Net | ROI |
|---|---|---|---|
| Essentials 300 min · 48.1% used | $197 | $11,145 | 5658x |
| Growth 1,200 min · 12% used | $347 | $10,995 | 3169x |
| Command 3,000 min · 4.8% used | $697 | $10,645 | 1527x |
How the Calculator Works
The calculator uses three inputs you provide — monthly inbound call volume, average job or transaction value, and the percentage of calls that come in after hours — to estimate the revenue you're losing each month and each year.
The math is straightforward: after-hours calls × voicemail abandonment rate (85%) × your close rate × your average job value = monthly revenue at risk. Multiply by 12 for the annual figure.
Why 85% Voicemail Abandonment?
Industry research across service businesses consistently shows that when a caller reaches voicemail on their first inbound call, 85% do not leave a message and do not call back. They call the next result on Google. This isn't a pessimistic assumption — it's the documented behavior of high-intent inbound callers who have a problem to solve right now.
- Less than 3% of callers leave a voicemail when they reach a business line
- Of those who do leave a voicemail, roughly 45% have already booked a competitor by callback time
- Effective voicemail conversion rate: approximately 1–2%
- Answered call conversion rate (industry average): 40–70%
After-Hours Rates by Industry
The percentage of calls that come in after standard business hours varies significantly by industry. Use these benchmarks if you're not sure of your own rate:
- Locksmith: 71% | Urgent Care: 72% | Mental Health: 69%
- Dental: 67% | Personal Injury Law: 64% | Property Management: 63%
- HVAC: 62% | Med Spa: 61% | Real Estate: 57%
- Home services (general): 52–58% | Gym/Fitness: 52%
- Auto Repair: 59% | Veterinary: 53% | Pest Control: 48%
What to Do With Your Number
Once you see your monthly revenue at risk figure, the question becomes: what would it cost to capture those calls versus what you're currently losing? For most businesses running paid ads, the answer is stark. The cost of an AI answering system is typically recovered with the first one or two captured jobs per month.
“The annual revenue at risk figure is the number that matters. It represents what your current call gap is costing you from your existing ad spend — not from additional marketing. You've already paid to generate these leads. The only question is whether you're capturing them.”