Online booking or a phone call: what suits your firm

The one-question rule

A barber, a dentist and a heating firm all take appointments, and they should not all do it the same way. Ask one question about each service you sell: can you give a fixed time and a fixed length without asking the customer anything?

If yes, put it online. A haircut, a hygiene visit, a yearly boiler service. If no, send the customer to the phone. A leaking roof, "the boiler makes a noise", a bathroom rebuild. The answer depends on what you see, so a calendar slot would be a guess.

When online booking pays off

Repeat appointments. A client who comes every five weeks knows what they want. Booking takes them under a minute, and you do not pick up the phone for it.

Requests after hours. People look at their calendar in the evening, not when your shop is open. A booking page takes the request at 22:00. A call at 22:00 goes unanswered.

Staff tied up. When the barber has clippers in hand or the nurse is with a patient, the phone rings anyway. Every call that a form can answer is a minute back.

Reminders against no-shows. This is the strongest argument, with a caveat. A Cochrane review (published 5 December 2013) pooled 8 randomised trials with 6 615 people. Attendance was 67.8 % with no reminder, 78.6 % with text reminders and 80.3 % with phone-call reminders. Texts and calls were about equal, and in two studies a text cost 55 % and 65 % less per attended visit than a call. The authors rate the evidence low to moderate.

Read it carefully. These were healthcare appointments, not haircuts or boiler services, and the people were patients. The review says nothing about salons or trades. What it does show is that a reminder helps, and that a cheap text works about as well as a call.

A systematic review of missed GP appointments, Parsons and colleagues in the British Journal of General Practice (2021), found a mean missed rate of 15.2 % and a median of 12.9 % across 19 studies. Twelve of the studies gave reasons, and the most common were work or family commitments, forgetting and transport. Forgetting is the one a reminder fixes. Again, general practice, not your trade.

When a phone call is better

Complex jobs that need a quote. A heating firm cannot price a boiler swap from a form. A short call, or a photo and a call, comes first.

Emergencies. A burst pipe is not a slot next Thursday. If your site offers booking, the phone number must still sit at the top, large, and tappable on a phone.

Older clients. Some customers will simply ring. Do not force them through a form. A site that adds a booking button and hides the number loses them.

First diagnosis. A dentist hearing "it hurts when I chew" wants to decide how urgent it is. A first call is faster than a wrong slot.

Worked example: a heating firm

Online: yearly boiler service, fixed 60 minutes, picked from available slots. The customer gets a confirmation and a reminder the day before.

By phone: "no heating", "water on the floor", "I want a quote for a new system". The site shows the phone number first and a short line: for urgent faults, call. The quote request is a form that asks for photos, so the call that follows is short.

Worked example: a barber

Almost everything goes online: haircut 30 minutes, beard trim 20, both 45. Slots are every 15 minutes, with a short gap after each client. Two things stay for the phone: a wedding party of four, and a client who wants to change a booking five minutes before the slot. The page says so in one line and shows the number.

Checklist for choosing a booking setup

1. Calendar sync. Bookings must land in the calendar your staff already use, both ways. If someone blocks a slot by hand, the page must stop offering it.
2. Reminders. Does it send a text or email before the visit, and can you set the timing? A text costs less than a call, as the Cochrane figures suggest.
3. Cancelling and moving. One link in the confirmation, a clear deadline, and the slot returns to the calendar by itself.
4. Phone fallback. The number is visible. Phone bookings go into the same calendar, so no slot is sold twice.
5. Service length and buffers. Each service has its own duration and a gap after it.
6. Your Google profile. Google lets your profile carry booking links and mark one as preferred. Its help page also says that performance data is not available for custom links, and that a booking provider might charge you when customers book through Google (both checked 4 November 2026, links, provider setup). We cover the profile in Google profile and website together.
7. Your data. You can export the customer list when you leave.

Start with the smallest setup that covers points 1 to 4. Once bookings arrive, you need a place to keep who came and what was agreed: see CRM for a small firm.

Where to start

The one-question rule is not forever. If many calls repeat the same thing, such as "are you available on Saturday?", that service belongs online. And the reverse: if online bookings often need a phone call to fix, the service has hidden questions and belongs on the phone.

Take your price list and mark each service "online" or "phone" using the one-question rule. Most firms end up with a short online list and a visible phone number. If you want a second pair of eyes on that split, write to us through the contact form.