Published UK price guides put most bespoke booking systems for small and medium-sized businesses at between about £3,500 and £15,000 to build. Simple single-calendar systems can cost less, and multi-site platforms with their own mobile apps run to £20,000–£50,000 or more. On top of the build, expect a monthly fee for hosting and support, usually between £50 and £300.
The rest of this article explains where your system is likely to sit in that range, the running costs that are easy to forget, and when an off-the-shelf tool is the better buy.
Typical prices by type of system
Two UK agencies, Jabu Designs and Forgd, publish price guides that line up closely. Combined, they look like this:
| Type of system | What it usually covers | Typical UK price |
|---|---|---|
| Simple | One service or calendar, one payment and cancellation rule | £2,000 to £6,500 |
| Mid-range | Several things to book, your own rules, deposits, reminders, calendar sync | £6,000 to £15,000 |
| Advanced | Several sites, group or resource bookings, links to accounts or customer records, mobile apps | £15,000 to £50,000+ |
At the very bottom of the market, some studios advertise starter booking systems from under £1,000. Jabu Designs puts a mid-range system at 6 to 10 weeks to go live.
Most published price guides, including this one, are written by people who build booking systems. Treat the ranges as a guide, and get a fixed quote in writing.
What pushes the price up
The price follows how complicated your booking rules are, not how many pages the system has. For estates, sporting agencies and heritage businesses, these are the usual drivers:
- What is being booked. One activity on one calendar is simple. Beats, drives, guides, rods, workshop bays or tour slots that depend on each other take more work.
- Who is allowed to book. Invite-only access, vetting new clients, or an owner approving each booking before it is confirmed.
- Payments. A single payment is simple. Deposits, balances due later, staged invoices and refunds add work.
- Paperwork. Risk assessments, waivers or policies that must be signed before the day.
- Extras. Catering, equipment hire or accommodation added to the same booking.
- Connections to other systems. Accounts software, email marketing or a calendar the rest of the team already uses.
- Client accounts and reporting. Logins for repeat clients, and reports for the owner.
The running costs that are easy to forget
- Hosting and support: usually £50 to £300 a month. Jabu Designs puts hosting alone at about £75 a month for most small and medium operators, and support with a guaranteed response time at £200 to £500 a month.
- Card fees: paid to the payment provider, not the developer. Stripe, a common choice, charges UK businesses 1.5% + 20p for a standard UK card, 2.5% + 20p for a card from the European Economic Area and 3.15% + 20p for other international cards. A £500 deposit on a UK card costs £7.70. If many of your clients book from abroad, factor in the higher rates.
- Text messages and email: text reminders cost around 4 to 6p each, and a service for sending booking emails £15 to £75 a month, according to Jabu Designs.
When comparing quotes, ask what the monthly fee includes. Some cover hosting only; others include security updates, backups and a set number of hours for changes.
Bespoke or off-the-shelf?
Off-the-shelf booking tools are far cheaper to start with. Bookwhen is free for up to 50 bookings a month, with paid plans from $16 to $59 a month, and takes no fee per booking itself. SimplyBook.me runs from free to $59.90 a month on monthly billing. Both list their prices in US dollars. Some other platforms charge per booking instead, typically £0.50 to £2.00 each.
An off-the-shelf tool is usually the right choice when:
- your bookings are simple, such as one-to-one appointments with one payment rule;
- you take relatively few bookings, so a few manual steps each week cost little;
- you need something working this week.
Bespoke starts to pay when your process does not fit the tool. As Forgd puts it, "the moment your logic gets specific, you hit a wall". Typical signs are bookings that depend on who the client is, owner approval before anything is confirmed, documents that must be signed before the day, or several things booked together. The real cost of the wrong tool is the time spent on workarounds: emails, phone calls, spreadsheets and chasing forms.
A useful test is to count the hours a week you spend on bookings that a system could do for you, and put a price on them. That number, more than the build price, tells you which way to go.
A worked example
I am building an invite-only booking system for a chalk-stream fly fishing agency. Each client receives a personal link, chooses from the beats and dates the owner has offered, signs their documents, orders lunch and pays a deposit. The owner confirms with one tap.
A generic tool would struggle with the invite-only access, the owner's approval step and the signed documents, which puts this kind of system in the mid-range.
My own prices are published. A bespoke build starts from £6,000, fixed, and includes a care plan at £199 a month covering hosting, monitoring, backups, security updates and two hours of changes. At the starting price, the first three years come to £13,164 before card fees. A system with more moving parts costs more, and the written quote says exactly how much before any work starts.
Questions to ask before you sign
- Is the price fixed, and is everything included listed in writing?
- What does the monthly fee cover, and is there a minimum term?
- Who owns the code, and who owns the data?
- What happens if the developer stops trading?
- Will I see working software during the build, or only at the end?
- Which payment provider will it use, and what are its fees?
Good answers to all six matter more than a few thousand pounds either way on the build price.
Not sure what you need?
The £495 digital audit looks at how you take bookings today and tells you whether a bespoke system, an off-the-shelf tool or a few small fixes would pay for itself. If an off-the-shelf tool will do the job, I will tell you so.
Book a £495 digital auditSources
- Jabu Designs: How much does a custom booking system cost? A 2026 UK guide (May 2026)
- Forgd: Bespoke booking system vs off-the-shelf (June 2026)
- Activity Zone: Bespoke vs off-the-shelf booking software (July 2026)
- Webuildora: Custom booking system cost UK (July 2026)
- Stripe: Pricing for UK businesses
- Bookwhen: Pricing
- SimplyBook.me: Pricing
Prices checked on 10 October 2026. Providers change their prices, so check the current figures before deciding.