Chris M. / 21 July 2026 / Reviewed 11 August 2026

Why Am I Paying So Much for Software I Don't Use?

An office manager renewing the Microsoft 365 bill notices the seat count is higher than the headcount. Three leavers from the spring are still on the invoice. Nobody added them on purpose. Someone raised the count for a busy month, and it never came back down, because in most licensing arrangements it structurally cannot.

That is the honest starting point for this question, and it is a narrower, more useful claim than the one usually made. The familiar version says a third of your software spend is wasted on unused seats, quotes a figure from a vendor report, and moves on. That figure should not be repeated, because nobody independent has ever measured it, and the actual mechanism sitting underneath your bill is both more specific and more fixable.

The number everyone quotes, and why it will not survive a fact check

The most cited current figure is that 54% of SaaS licences sit unused in the average enterprise, costing $19.8 million a year. It comes from a single source, a SaaS management platform's own 2026 report, drawn from telemetry across its own customer base.¹ That population is not neutral. A company that has already bought a tool to hunt down wasted software licences is, by definition, a company that already suspected it had a waste problem. The figure also describes very large enterprises spending tens of millions a year, not a UK contractor renewing a handful of platforms.

The prior year's version of the same report quoted a different number, 52.7%, and the page that once hosted it now redirects to the current one, so the 2025 figure is no longer even citable at a stable URL.² A second commonly quoted figure, that IT teams report SaaS waste increasing, comes from a survey of 506 IT professionals about their own perception of a trend, not a measurement of any actual licence.³ Every organisation I could find publishing a shelfware percentage sells either licence management software, optimisation consultancy, or renewal negotiation services. That is not a reason to dismiss the concern. It is a reason not to build an argument on someone else's number when your own bill will show you the real one directly.

Look for the same figure in the place with the least commercial incentive to invent it, and it is not there at all. The Competition and Markets Authority's 637 page final decision on UK cloud services, the most thorough regulatory examination of this market in years, contains zero occurrences of the word shelfware and zero of unused.⁴ The most rigorous look anyone has taken at how UK businesses buy cloud services was not concerned with whether seats sit idle. It was concerned with whether the market lets you leave.

What actually happens to your seat count, in the vendor's own words

The stronger, checkable claim is about the mechanism, not the magnitude, and Microsoft's own partner documentation states it plainly. Seats on a Microsoft 365 subscription bought through the Cloud Solution Provider channel, which is how most UK small and medium firms actually buy it, "can be increased at any time." Reducing them is a different matter entirely: "The number of licenses on a subscription can be decreased only within the first seven days of when the licenses were added to the subscription… This rule applies whether the licenses were added at the initial purchase, on renewal, or at midterm."⁵

After that seven day window, unused seats do not stop billing. The same page is explicit: "the partner is billed for the full term even if the customer stops paying for or using the subscription." And renewal, the moment you would expect to catch and correct the drift, does the opposite by default. "Active subscriptions are set to automatically renew when the subscription period expires," reopening only another seven day window to trim anything down.⁶ A seat added to cover a busy quarter, or a leaver never removed, is not a rounding error in your invoice. It is the designed behaviour of the billing mechanism, working exactly as specified.

The direction of travel makes this worse rather than better. Microsoft's older, legacy licensing let a partner "cancel at any time throughout their term." The newer commerce model that has replaced it does not.⁷ And a firm that starts a Microsoft trial without actively configuring the seat count and term does not simply stop when the trial ends; the documentation states it "renews with 25 licenses, a one-year commitment, and monthly billing" by default.⁸ None of this is a Microsoft-specific failing. It is one clearly documented, publicly checkable example of a ratchet that most SaaS billing shares in some form: up is frictionless, down has a window, and after the window closes the meter runs regardless of use.

The construction-specific version of the same ratchet

Construction software vendors have run the identical conversion, and the industry has direct, checkable evidence of what it costs. Autodesk retired concurrent, network based licensing entirely between 2020 and 2023, moving customers onto named-user seats.⁹ Its own trade-in terms describe the mechanics: "Trade-in one multi-user subscription or network maintenance seat for two standard subscriptions for one named user each." One shared seat, used by whichever engineer needed it that day, became two dedicated seats. Autodesk did hold pricing steady through 2028 for firms that converted at the time, which is a real mitigation worth crediting, but the billing basis itself moved from measured usage to headcount, permanently.¹⁰

Not every construction platform is built this way, and it is worth knowing the alternative exists, because it changes what you can reasonably ask a vendor for. Procore charges "an upfront annual fee by product and based upon your Annual Construction Volume," the value of construction work across your projects, and states plainly: "We'll never charge you for adding more users to Procore."¹¹ That is not free of its own version of ratchet risk, since the fee rises with turnover rather than with actual platform use, but it removes the specific mechanism this guide is about. If your business runs mostly seat-priced software, that is a choice your vendor made, not a law of how construction software has to be sold.

Why you cannot simply walk away from a bad deal

A UK sole trader or small contractor buying software for the business has less legal protection here than most people assume. The Unfair Contract Terms Act 1977 gives some control over standard-term exclusion clauses in business-to-business contracts, but it does not touch price, renewal terms, or seat mechanics, and a genuine question remains open on whether it reaches software licensing at all, since the Act carves out contracts for the transfer of intellectual property rights.¹² The stronger consumer protections in the Consumer Rights Act 2015 do not apply here either, because a sole trader buying software for their business is not a consumer under that Act's own definition: a consumer is "an individual acting for purposes that are wholly or mainly outside that individual's trade, business, craft or profession."¹³

New statutory subscription protections are coming under the Digital Markets, Competition and Consumers Act 2024, including cooling-off periods and clearer renewal notices, but they apply only to contracts between a trader and a consumer, and they are not yet in force.¹⁴ Commentary suggests commencement around spring 2027, though that date has not been confirmed against a primary government source. Until then, a construction business signing a software contract is negotiating entirely on commercial terms, with no statutory floor under the renewal mechanics at all.

The comparison that shows what real leverage looks like

The clearest illustration of what a fair exit term actually looks like sits inside the UK's own public procurement rules, and it is worth using as a benchmark in your own negotiations. The standard government cloud framework call-off contract gives the buyer the right to end the contract "at any time by giving 30 days' written notice to the Supplier."¹⁵ A full search of that contract's text turns up zero occurrences of automatic renewal in any form. Central government does not tie itself into the seat ratchet described above, because it negotiated the right not to.

That right is exactly what most SaaS contracts withhold from a smaller commercial buyer, and it is a specific, reasonable thing to ask a vendor for at renewal: a shorter notice period to reduce seats, a longer window to true up the count before billing locks in, or a walk-away clause instead of automatic renewal. None of these require legislation. They require asking, and knowing, concretely, that a buyer with real negotiating weight already gets them.

What to actually check on your own bill

Skip the industry-wide percentage entirely and run three checks against your own invoice. First, compare the seat count to your current headcount, including anyone who left in the last renewal cycle, since that is where the seven-day window has already closed against you. Second, find your renewal date and put a reminder in a calendar for two weeks before it, since that is the only point most contracts give you any leverage to adjust the count at all. Third, before your next renewal conversation, ask directly whether the vendor will offer a shorter true-up window or a notice-based exit rather than automatic renewal, using the 30-day government standard as your reference point rather than accepting the vendor's default as the only term on offer.

Related reading

If your firm runs several disconnected platforms rather than one bloated one, the sharper question is whether to keep buying separately or consolidate: see one platform or build your own and tailoring Procore or Asite. And if Microsoft 365 sits unused alongside a construction platform you already pay for, why Copilot is installed but nobody uses it covers the same waste from the adoption side rather than the contract side.

Where to check this yourself

• "How do I check who owns and can access my company on Companies House?" Free company filing and officer records are searchable directly at Companies House, the UK's official company register.
• "What does the Chartered Institute of Building say about managing technology contracts?" CIOB publishes advice and guidance for members on regulatory and commercial questions at ciob.org.
• "What UK-wide standards or guidance exist for surveyors on technology and contract terms?" RICS publishes its professional standards and guidance library at rics.org.
• "What are my rights as a small business signing a software contract?" The Competition and Markets Authority is the UK's competition regulator and publishes consumer and business contract guidance, free, at gov.uk.

What could not be established for this guide

No independent, UK-specific, or construction-specific figure for unused software licences exists in any source I could verify, and this guide deliberately does not invent one. The often-repeated claim that Gartner found 30% of SaaS spend wasted traces back only to a 2016 press release about cutting costs through best practice, a different claim entirely, and I could not read the original page to check it directly. No UK government guidance addresses unused licences or software asset management as a named problem; the Technology Code of Practice's purchasing guidance covers commercial and contractual considerations generally but does not mention licence utilisation. And no source establishes a reliable cost ratio between well-managed and poorly-managed software estates for a firm of any particular size. Where the evidence runs out, this guide stops rather than filling the gap with a number that sounds more precise than anyone actually knows.