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Voice Agent ROI Calculator

How much revenue is your voicemail losing you?

Missed-call rates vary by industry: CallRail's January 2025 report on 1.1 million leads found 9% in real estate and 32% in healthcare. An AI voice agent picks up 24/7 and books qualified callers straight into your calendar. Drag the sliders. Watch what changes.

9-32%
Missed-call rate by industry
Immediate
AI voice pickup
24/7
Always on, never on PTO
3 in 4
Have hung up on a long hold

Sources: CallRail, From Conversations to Conversions (January 2025; 1.1 million leads, four industries); Invoca, B2C Buyer Experience Report 2026 (693 US consumers).

Estimated Monthly Revenue Recovered
$0
Net of voice agent cost · scoped on a strategy call
0
Calls Missed / Month
0
Recovered by AI
... days
Payback Period
Restaurant

Sets sensible defaults for close rate and average ticket.

$700

Average revenue per booked customer. Use lifetime value for repeat-business industries.

600

All phone calls (answered, missed, voicemails). Ballpark is fine.

38%

% of calls that arrive outside your front desk's coverage window. Check your phone log for your real share.

8%

% of missed calls that turn into business via voicemail callbacks. In Hiya's 2026 survey across six countries, only 14% of consumers said they answer unknown numbers right away, so callbacks often reach voicemail.

28%

% of answered calls that turn into a paying customer.

Where Your Calls Go Today vs. With AI
Lost Now Recovered
$0
Lost without AI
Missed calls + voicemail leakage
$0
Recovered by AI voice agent
Answered immediately, qualified, booked
12-Month Revenue Recovery Projection
Compounding Recovery
Year 1 Total $0

What happens next

You just modeled the voice agent. Now hear the real one.

Nirvani installs AI employees that answer every call, text back every missed one and book the work straight into your calendar. Everything below is free and live today.

01Hear it live Call 424.444.1142. An AI employee answers.

Day or night, no hold music. Ask it anything a customer would ask you. That voice is the one we configure for your business.

Call the agent 02Fifteen minutes Leave with one free AI agent.

An intro meeting with a principal. We map how leads reach you today, then configure one agent for how you actually operate. Pledge 1% give-back, no card.

Book the intro 03The playbook The Leak Report

Where revenue quietly disappears: missed calls, slow response, dropped follow-up and no-shows, with a deploy playbook for six industries.

Read it
04Pledge 1% Free website and hosting Pick a style, claim it, get a live URL. Built and hosted by Nirvani at no cost. Free accessibility widget Nirvani Access on your site. We send the embed, help install it and confirm it is running.

Keep this run

Email me these exact numbers.

Every input and result you set above, sent to your inbox with a reference number, plus one confirmation text. No drip sequence: your run lands with a principal, not in a funnel.

✓

Your numbers are in your inbox.

Check spam once if it is not there within a minute. Want the agent that changes them? The intro meeting below already has your details filled in.

Claim the Free AI Agent

How this calculator works

Where do the assumptions come from?
The model defaults are Nirvani's starting assumptions, not measured medians or customer results. Override any value with the sliders; your own numbers always beat the defaults. For a measured reference point, CallRail's January 2025 report on 1.1 million leads found missed-call rates of 9% in real estate, 14% in home services, 28% in legal, and 32% in healthcare.
Why does the model assume 95% of after-hours calls are recovered?
It’s a modeling assumption, not a measured result. The agent answers (no IVR maze), introduces itself by your business name, asks intake questions you scripted, books the appointment directly into your calendar, sends an SMS confirmation, and texts you a summary if it’s high-value. The 5% gap stands in for callers who insist on a human or hang up before completing intake. Those get a callback queue with their number captured. If many of your callers ask for a person, lower the rate in your head and re-read the numbers.
Does it count as “robocall” under FCC rules?
Answering is generally not. The TCPA restricts calls a business makes using an artificial or prerecorded voice, and the FCC’s February 2024 ruling on AI voices applies to AI technology that initiates outbound calls. When a customer dials you and the AI answers, the customer started the call. The line flips when the AI dials out: an outbound AI call, including a callback to a missed call, needs the person’s prior consent (written consent if it markets anything). Any outbound SMS goes through A2P 10DLC-registered campaigns with documented consent on each opt-in. This is general information, not legal advice.
What if my close rate on AI-booked calls is lower than my human-booked rate?
We assume parity (same close rate on AI-recovered calls as your inbound calls) because the agent captures the qualifying info that would make a human convert: project type, timeline, budget range, decision-maker present. If your AI-booked calls close at a lower rate, drop the close-rate slider to match and re-read the numbers.
What’s in the detailed PDF report?
Four pages: (1) Your numbers (recovered revenue, payback, 12-month projection). (2) The model defaults for your industry (how your inputs compare). (3) The exact intake script we’d configure, with industry-specific qualifying questions. (4) Implementation roadmap (week 1, week 4, day 60). No marketing fluff. You’ll get it after you submit (delivery time can vary).