How much does AI automation cost for a small UK business?

The short version

There is no single price for "AI automation", because it covers everything from switching on a feature in software you already pay for to building a custom tool. It is more useful to split the cost into three parts:

1. Software subscriptions. The monthly cost of the AI assistant or automation platform.
2. Setup. The time, internal or external, to design, build and test the change.
3. Running costs. Monitoring, fixing things when other software changes, training new staff and paying for usage as volumes grow.

Most owners focus on the first and underestimate the other two.

1. Software subscriptions

These are the published prices we checked in November 2026, in sterling as shown to UK customers. Prices exclude VAT and change often, so check the supplier's own page before you commit. Where a supplier bills in US dollars or euros, the sterling figure is approximate and the amount you pay moves with the exchange rate.

Two things catch people out. First, automation platforms charge by usage (tasks, credits or executions), so a cheap plan can become expensive if an automation runs thousands of times a month. Second, an AI assistant licence for every member of staff adds up quickly: ten Copilot Business licences at the £16.10 list price is over £1,900 a year before VAT.

2. Setup costs

Setup is where the real variation sits. As a rough guide, advertised rates for UK contract software developers had a median of about £525 a day in the six months to November 2026, according to IT Jobs Watch, with most between about £360 and £625. Agencies and consultancies usually charge more than an individual contractor because they include project management, testing and support.

Using that as a yardstick, here is what different kinds of work typically involve. These are illustrations, not quotes.

If you do the work yourself, the cost is your time instead. That can be the right choice for simple automations, as long as someone understands how they work and what to do when they stop.

3. Running costs people forget

• Maintenance. Connected software changes. Fields get renamed, logins expire and suppliers update their systems. Something has to notice and fix it.
• Usage growth. Per-task and per-credit pricing rises as the business grows.
• Supervision. AI output needs checking. Budget for the time a person spends reviewing drafts, especially in regulated work.
• Data protection. If personal data is involved, you may need to update privacy notices, records of processing or a data protection impact assessment. The ICO is clear there is no AI exemption from data protection law.
• Training and adoption. A tool nobody uses has a cost and no benefit.

How to work out whether it is worth it

Start with the cost of the problem, not the price of the tool. A simple calculation:

1. Hours per week spent on the task, across everyone who does it.
2. Multiplied by a realistic hourly cost, including employer costs.
3. Multiplied by around 46 working weeks.

Five hours a week of admin at £20 an hour is about £4,600 a year. An automation that removes most of that, costs £1,500 to set up and £300 a year to run pays for itself within the first year. One that saves twenty minutes a week probably does not.

Then add the value that is harder to measure but often matters more: quotes sent the same day instead of next week, fewer missed enquiries, invoices issued sooner, and the owner getting evenings back.

Where to start

Most SMEs get the best return from one well-chosen process rather than a broad AI rollout. Pick the job that is repeated most often, causes the most delay to customers or cash, and follows broadly the same steps each time.

If you are not sure which process that is, that is exactly what the FiveW Business Review is for. It looks at up to three processes and gives you likely costs, effort and benefit for each recommendation, for £750 plus VAT.