Pricing
How to Calculate the ROI of an AI Receptionist
Skip the vendor math. Here's a framework you can run with your own numbers to see whether an AI receptionist pays for itself.
Most ROI claims about phone answering are guesses. You do not need one — you have the inputs already, in your call log and your job history. This is the framework, with variables you fill in yourself rather than numbers pulled from nowhere.
The core equation
Payback comes down to three numbers multiplied together, compared against what the service costs: recovered calls per month, times your close rate on those calls, times your average job value, compared against the subscription plus any overage minutes.
- Recovered calls: calls that would have gone to voicemail or a busy signal and are now answered.
- Close rate: the share of answered calls that become paying work, based on your own history.
- Average job value: revenue per job, not revenue per customer relationship.
- Monthly cost: the plan price plus any minutes billed at $0.40 over the included allotment.
Step 1: count recovered calls
Pull your phone provider's call log for a typical month and count calls that ended in voicemail, went unanswered, or hit a busy signal during peak hours. This is your baseline of calls nobody handled. Not every one of these would have converted, but each one is a caller who tried you and got nothing — some fraction called a competitor instead.
Step 2: apply a conservative close rate
Use your existing close rate on answered calls, not an optimistic guess. If you close one in four calls that reach a person today, apply that same ratio to the newly recovered calls rather than assuming every one converts. If you do not track this, a week of manually logging outcomes will get you a real number fast.
Step 3: multiply by average job value
Use average revenue per completed job, pulled from invoices, not a marketing figure. If your jobs vary widely — a $150 service call versus a $6,000 install — run the calculation separately for each category if you can tell them apart in the call log.
Step 4: subtract the real monthly cost
Add the plan price to any expected overage. If your call volume runs close to a plan's included minutes, estimate the overage at $0.40 per minute rather than assuming you will stay under. Compare plans against your typical monthly minute usage before committing.
Where the number gets fuzzy
Two variables resist precision: how many recovered callers would have simply called back later anyway, and how much a faster, more consistent intake experience affects close rate on top of just answering the phone. Treat these as upside you have not counted rather than numbers to force into the formula.
Run your own numbers before you commit
Every plan includes a 7-day free trial, so you can measure recovered calls and close rate against your actual line before deciding it pencils out.
For the underlying cost structure, see virtual receptionist cost, and for what unanswered calls are already costing you, see what missed calls cost small business.