Buffer time between appointments is the gap you keep free after one booking and before the next, so the room can be reset, the therapist can write notes and a late client does not push the whole day back. Set it too short and every delay spreads to the evening. Set it too long and you give away appointments you could have sold. This guide shows how to choose the right buffer, what it costs in bookable slots, and how to stop double bookings when rooms and people both have to be free.
Three different kinds of "gap"
People use "buffer" for three things that behave differently in a schedule:
- Preparation time before the appointment: warming stones, setting up a nail station, reading the client file.
- Follow-up time after it: cleaning, changing linen, notes, taking payment.
- The gap between bookings: a safety margin for overruns and walking a client to the door.
Keep them apart. A hot stone massage needs preparation that a classic manicure does not, and a facial room needs cleaning time that a phone consultation does not. One flat buffer for every service either wastes time on short services or is not enough for long ones.
How much buffer you need
There is no single right number, but you can work it out from your own day:
- Time the resets. For one week, note how long the room or station really takes between clients. Use the typical value, not the worst day.
- Look at overruns. If appointments regularly end five minutes late, that belongs in the buffer, not in your lunch break.
- Count the walk. In a spa, the client changes, showers or moves between rooms. That time is part of the booking.
- Set it per service. Long treatments with set-up get more, short repeat services get less.
What a buffer costs you in appointments
A buffer is never free. The quickest way to see its price is to compare the same day with and without it.
Worked example: you work 8 hours a day and sell 60-minute treatments.
| Buffer | Time per booking | Slots per day | Slots per week (5 days) | Slots per month (22 days) |
|---|---|---|---|---|
| 0 min | 60 min | 8 | 40 | 176 |
| 5 min | 65 min | 7 | 35 | 154 |
| 10 min | 70 min | 6 | 30 | 132 |
| 15 min | 75 min | 6 | 30 | 132 |
Two things stand out. Going from no buffer to 10 minutes costs two treatments a day. And between 10 and 15 minutes nothing changes in this example, because the leftover time is too short for another full treatment anyway. If you need some gap, check where the steps are before you choose.
One detail the table does not show: it counts a buffer after every booking, including the last one of the day. If your last client needs no reset after them, the day can sometimes hold one more. With a 10-minute buffer, seven 60-minute treatments and six gaps fill exactly 480 minutes, so the real loss is one treatment, not two, as long as nothing overruns.
You can try your own hours, service length and buffer in the free appointment slot calculator. It divides your working minutes by the length of one booking plus the buffer and rounds down, which is how the table above was calculated.
Why double bookings still happen
A good buffer protects your timing. It does not protect you from selling the same room twice. In a spa or a salon with treatment rooms, a booking needs three things free at the same moment:
- The time, inside your opening hours
- A person who can do the service
- A room or station the service needs
A paper diary or a calendar with one column per therapist checks the second point only. Two therapists can both be free at 2 p.m. while there is only one treatment room with a couch. That is the double booking that ruins an afternoon, and no buffer prevents it.
The fix is to make rooms and equipment part of the schedule: each service names what it needs, each room has its own hours, and a time is only offered when everything is free.
How Service Manager handles it
Service Manager is the appointment app in the KIMISUITE workspace. It treats all three gaps and the room problem as part of each service:
- Preparation, follow-up and buffer per service. In the service editor you enter minutes before, after and between, and the editor states the result in a sentence, for example: "Each booking blocks 75 minutes of the schedule (preparation + appointment + follow-up), plus a 10-minute gap to the next booking."
- A default buffer for the whole business in the booking settings, next to the slot interval and auto-confirm.
- Required resource types. A service names what it needs, such as a massage therapist and a treatment room. Resource scheduling keeps rooms, chairs, stations and equipment as resources with their own weekly schedules and capacity.
- Only free times are offered. Slots are generated from working hours, resource schedules, duration, preparation, follow-up and buffer, and booked times disappear from the public booking page.
- Planned blocks. Weekly schedule templates put cleaning, briefings or deliveries into the calendar as time blocks between appointments.
The result: a client booking online only sees times when the right person and the right room are both available, with the reset time already counted.
FAQ
What is buffer time between appointments?
It is time you keep free between two bookings for cleaning, notes, overruns and moving clients, so delays do not pile up through the day.
How long should the buffer between appointments be?
Measure your real reset time for a week and set the buffer per service. Short repeat services need less, long treatments with set-up need more.
Does buffer time reduce how many clients I can book?
Yes. With 8 hours and 60-minute treatments, a 10-minute buffer after every booking takes you from 8 to 6 bookings a day, or to 7 if the last booking of the day needs no gap. Check the numbers before you choose.
How do I avoid double booking appointments with shared rooms?
Treat rooms and equipment as resources in your booking system, so a time is only offered when the person and the room are both free.
Set up Service Manager in your workspace and try it for 14 days
