# After-hours and overflow ROI calculator — Xona

> Estimate after-hours calls, overflow demand, booked appointments, follow-ups, and year-one recovered revenue.

Source: https://xonark.com/calculators/overflow/

Phone-demand estimate

# How much after-hours and overflow appointment value could Xona catch?

This is the phone-model detail behind the Free Dental Leakage Scan. Xona estimates after-hours calls, busy-hour overflow, likely bookings, and staff follow-ups before a review replaces assumptions with your real phone outcomes.

Clinic inputs

## Use numbers you know.

live

Appointments per working day

Working days

Mon Tue Wed Thu Fri Sat Sun

If fewer weekdays are open, the model keeps weekday patient demand in the week and shifts more of it into after-hours calls.

Average appointment value
Model assumptions

Calls per appointment-day: 1.8

In-hours overflow fraction: 50%

Weekend demand multiplier: 0.15

Booking rates: 13/157 after-hours and 11/152 overflow.

Capture rates: 35/157 after-hours and 31/152 overflow.

Plain-English model

## Today’s baseline vs Xona recovery.

Calculate

how it’s computed Ready

Results load automatically in your browser. Use Calculate to replay how the estimate is produced.

With Xona Today baseline

0%

year-one lift

Blue is estimated front-desk year-one production from your current appointment flow. Green adds only the bookings the pilot-based after-hours / overflow model expects Xona to catch — a review replaces these assumptions with your real phone outcomes.

Segment

Calls/mo

Booked/mo

Follow-ups/mo

After-hours

0

0

0

In-hours overflow

0

0

0

Result

## Year-1 booked appointment value

$0

Value is calculated from modeled booked appointments only, using the appointment value you entered.

Booked appointments

0

per month

Staff follow-ups captured

0

per month, not counted as revenue

[Start full leakage scan](/free-dental-leakage-scan)[See workflow demos](/xona-lps)

Call volume sanity check

Total inbound/mo 0

After-hours/mo 0

Overflow/mo 0

After-hours share 0%

If these call volumes do not match your clinic reality, a review replaces model assumptions with your actual call routing and phone outcomes.

Next calculator

### Estimate hidden recall backlog

For the owner-friendly combined number, use the full scan. For overdue patient assumptions, open recall detail.

[Start full leakage scan →](/free-dental-leakage-scan)[Open recall model detail →](/calculators/recall)

Shareable calculator

## Send this phone-demand result

Send the current result to yourself, an owner, or a manager. Email includes the snapshot; text opens an owner-ready snapshot page with the same inputs.

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