Every partner will quote you. Few will tell you what the number is made of, or what it will be in year three. The five parts of the cost of a Business Central implementation, with realistic UK ranges for small, mid-sized and complex businesses, and the three places the number usually hides.
The question every prospective customer wants answered and no partner wants to answer in public: what does it cost? The honest reason it is hard is that the range is wide. The dishonest reason is that a low headline sells, and the rest arrives later. This is our attempt at the honest version: the five parts of the cost, realistic UK ranges, and where the number hides.
These are ranges for 2026, in pounds, for UK businesses, and they are ranges. Your number depends on scope, data, integrations, industry and how much of the work your own people can do. The licensing calculator gives you part one precisely; the rest is a conversation.
Business Central online, UK list price, per user per month: Essentials £61.50 (finance, sales, purchasing, stock, projects), Premium £84.60 (adds manufacturing and service), Team Member £6.20 (read, approve, light entry). All full users in a tenant are the same edition. A business with 15 Essentials users and 10 Team Members is about £12,000 a year; 40 Premium and 30 Team Members is about £43,000. Add any ISV apps (typically £100 to £1,000 a month each), Power BI Pro for the people who need it, and AI agent credits if you use them (see our piece on what agents cost). Storage is included up to a tenant allowance; most businesses never exceed it.
This is the one that varies. The partner's days across the six Sure Step phases: diagnostic, analysis, design, development, deployment and the first weeks of operation. As a rough guide:
| Business | Typical implementation | Typical duration |
|---|---|---|
| Small: one company, standard finance and stock, from Xero or Sage 50, up to about 15 users, no integrations beyond a bank feed | £25,000 to £50,000 | 8 to 16 weeks |
| Mid-sized: one to five companies, real warehouse, a couple of integrations (web shop, EDI, payroll), 20 to 60 users, some extensions | £60,000 to £150,000 | 4 to 8 months |
| Complex: manufacturing or directed warehousing, multiple sites or countries, several integrations, a regulated industry, 60 users and up | £150,000 to £400,000 and beyond | 8 to 18 months |
The drivers, in order: integrations (each one is a mini-project), data (how much, how clean), the number of distinct processes (manufacturing roughly doubles a project), customisations that survive the fit-gap, the number of companies and countries, and how much of the testing and training your own people can carry. A business with good super users and clean data sits at the bottom of each range. One with neither sits at the top.
The cost nobody budgets. Super users at a day a week for six months, the finance manager at two days a week through design and UAT, the project sponsor's time, and backfill for the day jobs that slip. For a mid-sized project this is comfortably a five-figure sum in salary time, and if it is not planned the project pays for it in delays instead. See super users.
Data cleansing if it is outsourced; hardware for the warehouse (scanners, label printers); the integration middleware if there is one; Power BI build; training beyond what the project includes; a contingency, which should be 10 to 15 per cent of part two and should be visible in the budget rather than hidden in the partner's estimate.
Year two onwards: licences (part one, which go up with users and with Microsoft's periodic price rises), support (typically 15 to 20 per cent of the implementation value a year for a proper contract that includes release waves, or a fixed monthly fee), the ISV subscriptions, and a change budget for the improvements the business will want once it has lived with the system. A sensible total cost of ownership is five years, not one, and on that basis the licence and support lines usually outweigh the implementation. That is why the support contract deserves more attention than it gets.
A £20m distribution business, two companies, 25 full users and 15 Team Members, moving from Sage 50 with a web shop and a courier integration, standard warehouse with bins, no manufacturing. Licences about £19,500 a year. Implementation around £85,000 over six months. Internal time roughly £30,000. Edge costs (scanners, Power BI pack, contingency) around £20,000. Year one total: roughly £155,000. Year two onwards: about £19,500 licences plus £15,000 to £18,000 support plus a change budget, so £40,000 to £50,000. Five-year cost of ownership about £340,000, of which the implementation is a quarter.
If a partner's number is a long way below these ranges, ask what is not in it. If it is a long way above, ask what is. If you would like us to put a real number on your business, the health check is the quickest way to get an estimate you can plan on.
