An online booking system can fill your calendar while you sleep, but the price ranges from a few euro a month to a one-off custom build, and the cheapest sticker price is not always the cheapest in the long run. Here is what a booking system really costs in Ireland and how to choose the right option.
How much does an online booking system cost?
Off-the-shelf booking tools in Ireland typically cost €15 to €80 a month, sometimes with a fee per booking, while a custom booking system built into your own website usually starts around €2,000 to €6,000 as a one-off. The right choice depends on your volume and how much the tool needs to fit your specific business, which is exactly the trade-off in off-the-shelf versus a custom booking system.
What does each option cost?
The two routes are renting a ready-made tool or building your own. The table shows typical 2026 figures.
| Option | Cost | Best for |
|---|---|---|
| Off-the-shelf booking tool | €15 to €80/mo (+ possible per-booking fee) | Getting started quickly with standard needs |
| Custom booking system | €2,000 to €6,000 one-off | Higher volume, specific rules, no ongoing per-booking fees |
Booking systems are a kind of custom web app; see our custom web apps service and the full breakdown in custom web app costs.
What affects the cost of a booking system?
The main drivers are how custom it needs to be, whether it takes payments, and the rules around your bookings, staff, resources, availability and cancellations. A simple "pick a slot" tool is cheap; a system handling multiple staff, deposits, reminders and integrations costs more. The more your booking process differs from the standard, the stronger the case for custom.
Off-the-shelf booking software or custom?
Off-the-shelf is cheaper to start and fine if a ready-made tool fits; custom costs more up front but fits exactly and avoids monthly and per-booking fees as you grow. It is the same trade-off as any software decision, which we cover in custom software vs SaaS. Many businesses start with a tool and move to custom once fees or limits bite. For the full picture of features, options and how to choose, see our complete guide to online booking systems.
Are there ongoing or per-booking fees?
Often, yes, with off-the-shelf tools: a monthly subscription, and sometimes a fee on every booking, which quietly scales with your success. A custom system has hosting and optional maintenance but no per-booking cut, so for a busy business it can be far cheaper over a year. Always check whether a tool charges per booking before committing.
Is a custom booking system worth it?
For a business taking regular bookings, often yes. Once monthly and per-booking fees add up, a one-off custom build that you own outright can pay for itself within a year or two, and it fits your exact process rather than forcing you into someone else's. For low volume, a cheap tool is the sensible start.
Frequently asked questions
Can a booking system take payments and deposits?
Yes. Both off-the-shelf tools and custom systems can take card payments and deposits at the time of booking, which cuts no-shows. A custom build gives you full control over how deposits, refunds and pricing rules work.
Can I add booking to my existing website?
Usually, yes. A booking system can be built into your current site so customers book without leaving it, which looks more professional and keeps them on your brand rather than a third-party page. We can scope this as part of a quote.
Do off-the-shelf booking tools really charge per booking?
Some do, and it adds up fast at volume. Always read the pricing: a low monthly fee with a per-booking charge can cost more than a higher flat fee. This per-booking model is a key reason busy businesses move to a custom system they own.
Want bookings on your own site with no per-booking fees? Tell us how your bookings work and we will quote a system that fits. Get a free quote.