School Business Manager Salary: 70% of Head's Pay

A school business manager runs the finances, the estate, the contracts, the compliance and often the HR of an organisation with a multi-million pound budget, a workforce of a hundred or more and a building portfolio that would occupy a full-time facilities director anywhere else. In a secondary school the budget the SBM administers is frequently north of £8 million. And unlike every teaching role in the building, there is no national pay scale for the job, no statutory framework, no published progression structure and, in many cases, no comparator anywhere in the school that anyone can agree on.

That gap is the reason this page exists. The nearest thing to an answer is a spreadsheet published by the Institute of School Business Leadership, and although it is quoted fairly often in the sector, it is rarely explained. Most coverage repeats the "70% of a headteacher's salary" line and stops. The interesting parts are what happens after that 70%, where the numbers underneath it come from, and how far the resulting figures sit from what schools are actually advertising.

We downloaded the 2026-27 framework file directly from ISBL and read it — all six worksheets, including the formulas — rather than working from summaries of it. What follows is what it says.

What the ISBL framework actually is

The Institute of School Business Leadership is the professional body for school business professionals in England. It was formerly the National Association of School Business Management, and it publishes the ISBL Professional Standards, which most of the sector's training and apprenticeship provision is mapped against. In July 2024, in collaboration with the recruitment firm Hays, it launched what it described as the first national pay framework for school business professionals. The 2026-27 edition, last updated on 2 September 2026, is the version current at the time of writing and covers the pay year from 1 September 2026 to 31 August 2027.

Physically, the framework is an Excel workbook with six sheets: a Notes page setting out the rationale and sources, a Framework sheet that does the calculation, a Variables sheet holding the three global constants, a CEO range sheet, a Leadership scales sheet holding the full 43-point pay spine across four regions, and a Dropdowns sheet holding the weighting multipliers. You select a spine point and three weighting values from dropdowns, and it returns a benchmark salary in each of four regional columns.

It is important to be clear about its status before going any further. ISBL's stated purpose is to "provide SBPs and their employers with evidence-based guidance on how to calibrate pay in relation to three important factors — experience, qualifications and accountability", and it says explicitly that "the main aim is not to seek changes to regulations nor to influence pay policy". It carries no legal force. No employer has to use it. It is not incorporated into anyone's contract by default, it is not a collective agreement, and unlike the STPCD it is not given effect by statutory order.

The 70% rule and where it comes from

The core claim is set out in the Notes sheet of the workbook, in ISBL's own words: "We believe that it is fair and reasonable to remunerate school business leaders at a level commensurate with a deputy head or equivalent and that 70% of a head teacher's salary is a reasonable benchmark."

That is an argument rather than a data finding, and it is worth reading it as one. ISBL is not saying that 70% is what the market pays. It is saying that the school business leader occupies a position in a school's leadership structure equivalent to a deputy headteacher, and that pay should follow position. The 70% figure is a proxy for "deputy head", and the leadership pay spine is the mechanism for expressing it.

The framework then attaches three conditions to the full 70%. The Notes sheet lists them plainly: full accountability for a significant area of the school operation such as HR or finance; a Level 6 or above relevant qualification; and appropriate leadership experience. Where those conditions are not fully met, a weighting is applied — which is the part of the framework that does most of the work and gets least of the attention.

The spine underneath the formula

The baseline the framework multiplies is the leadership pay spine. Its Leadership scales sheet is headed "1 SEPT 2026 TO 31 AUG 2027" and carries 43 points, L1 to L43, in four regional columns: Inner London, Outer London, London Fringe and rest of England. We cross-checked it against the leadership scale published by NASUWT for 2026-27 — which is itself the School Teachers' Review Body's 36th Report figures, accepted in full by the Government on 1 July 2026 with a 3.5% uplift. We did not verify all 172 cells individually, but every point we sampled matched exactly, including both ends of the spine: L1 at £53,586 and L43 at £148,829 outside London. The framework's figures also reconcile precisely with the statutory headteacher group ranges — the Group 5 minimum of £81,457 is the framework's L18, the Group 8 minimum of £104,059 is its L28 — which is a stronger check than a like-for-like table comparison, because the two sources would have to be wrong in the same way to agree.

That verification matters more than it might sound. It means that if you use the framework, you are anchoring the business manager's pay to the same statutory numbers that determine what the headteacher sitting across the corridor is paid, published by the same process. That is a far stronger foundation than a market survey, and it is the framework's most defensible feature.

Here is the spine at selected points, alongside the 70% figure the framework generates in each region. These are the outputs at full weighting — accountability Full, qualifications Level 6+, experience Strategic.

A note on arithmetic, because it explains small discrepancies if you check our figures against the workbook's. The framework rounds every derived figure up to the nearest whole pound, using a ceiling function rather than conventional rounding. So L1 rest of England at £53,586 produces 70% of £37,510 exactly, which the framework publishes as £37,511. We have reproduced that behaviour here so the numbers on this page are the numbers the framework itself outputs.

The second thing to understand about the spine is which point you should be selecting, because the framework does not tell you. It says "head teacher/CEO spine point", leaving you to pick. In practice the answer comes from the STPCD headteacher group ranges, which assign every school to one of eight groups using a unit-total score based on pupil numbers weighted by key stage, plus units for a sixth form and designated SEN provision. The group determines the band within which the head's individual range must sit:

That table is the single most practically useful translation of the framework, because it turns "70% of a headteacher's salary" into a range you can actually look up. If you work in a Group 4 school outside London, the framework's fully weighted benchmark for your role is somewhere between £51,679 and £70,376, depending on where in their own range the head actually sits.

The three weightings

This is where the framework stops being a single percentage and becomes a formula. Three factors, each with four settings, each expressed as a multiplier:

The three are multiplied together to give an overall weighting, and the overall weighting is applied to the 70% base. The arithmetic in the workbook is literally = L × M × N, then = ROUNDUP(base × overall). Nothing more complicated than that.

The consequence people miss is that the weightings compound. A single step down on one factor costs 5%. Two steps down on one factor, or one step down on two factors, costs about 10%. But all three factors at their lowest setting is not a 45% reduction — it is 0.85 × 0.85 × 0.85 = 0.614125, a reduction of nearly 39%. Applied to the 70% base, that produces a benchmark of roughly 43.0% of the headteacher's salary. The framework's stated range is therefore not "70%" at all; it is a band running from about 43% to 70% of a head's pay, and most real post-holders will land somewhere in the middle of it.

Each factor deserves a word on how it is meant to be assessed.

Accountability is about scope, not seniority. ISBL's Notes sheet says the expectation is that "full accountability equates to full responsibility for a key operational area (or a combination of areas), e.g. finance, HR, infrastructure". The distinction being drawn is between a post-holder who owns a function and one who administers it on someone else's behalf. An SBM who prepares the budget, presents it to the finance committee and is answerable to the trustees for it has full accountability. One who collates figures for a trust finance director to sign off does not.

Qualifications is the most mechanical of the three, and refers to a relevant education or business qualification at Levels 4, 5 or 6+ on the regulated qualifications framework. In practice, the ladder most school business professionals travel maps onto this directly: the Level 4 School Business Professional Apprenticeship (DfE standard ST0575, typically 18 months plus end-point assessment, funding band £6,000) sits at the 0.9 multiplier; the ILM Level 5 Diploma at 0.95; and a Level 6 degree or the Level 7 CIPFA/ISBL diploma at the full 1.0. This is the one weighting you can move deliberately, which is why the training section below matters.

Experience is mapped onto ISBL's own professional standards practitioner levels — Foundation, Associate, Lead and Strategic — in ascending order. ISBL is candid that this is the softest of the three factors. The Notes sheet says outright that "by its very nature, a judgement on experience is subjective but could quite easily be assessed against ISBL's professional standards". That is the framework conceding that one of its three multipliers is a matter of opinion, which is worth remembering if an employer sets it at Associate and you think it should be Lead. The full definitions of the four practitioner levels sit inside the ISBL Professional Standards document, which requires registration with ISBL to download; we were not able to access it to quote the level descriptors directly, and we are not going to paraphrase definitions we have not read.

Worked examples

The formula is easier to trust once you have watched it run. Each of these reproduces the workbook's own calculation exactly: take the headteacher's salary, apply the percentage, round up, multiply by the compounded weighting, round up again.

Taking those one at a time. The primary school is benchmarked at L8, the bottom of a Group 2 headteacher's range under the STPCD 2026 group ranges, giving a head's salary of £63,688 and a 70% base of £44,582. The post-holder holds a Level 5 diploma rather than a degree, is assessed as a Lead rather than Strategic practitioner, and carries partial rather than full accountability because the governing body retains sign-off. Each of those is a single, defensible step down. Together they produce £38,224 — £6,358 below the unweighted figure.

The secondary school is benchmarked at L28, the bottom of a Group 8 headteacher's range, and the post-holder scores full marks on all three weightings. The result, £72,842, is the framework operating at full stretch — and it is a figure that no single-school business manager vacancy we found advertised in England in September 2026 came close to.

The Outer London example shows the regional effect. The same L24 spine point that is £94,349 outside London is £98,602 in Outer London, and the resulting benchmark is £65,571 even after a single step down on experience. Region is worth more in this framework than any one of the three weightings.

The central-team example is the second school again, with nothing changed except that the trust runs finance, HR and procurement from the centre. The benchmark drops from 70% to 65%, the base falls from £72,842 to £67,639, and with full weighting on everything else the result is £67,639 — a reduction of £5,203 for a change in where the functions sit rather than in the person doing the job.

Read across the four and the framework's behaviour is clear enough. Modest, individually reasonable downgrades compound quickly; region matters more than any single weighting; and where the trust has centralised the back office, the framework docks the post rather than the person.

The 5% central-team deduction

The Framework sheet carries a second SBM row specifically for academy trusts, labelled "Finance, HR and procurement managed by central team". Where a trust runs those functions centrally rather than leaving them with the individual school's business manager, the benchmark drops from 70% to 65%. The Variables sheet holds this as a simple 5-percentage-point deduction.

The logic is straightforward and, on its own terms, fair: a business manager in a school where the trust's central team owns the ledger, the payroll and the procurement pipeline is carrying a narrower brief than one in a standalone school who owns all three, and the framework prices the difference. It is also, in practice, the situation a great many academy SBMs are in — centralisation of back-office functions is one of the main efficiencies trusts claim when they grow, and it is a live issue for anyone whose school is going through conversion.

The CFO/COO tier and the London uplift

The third live row of the Framework sheet handles trust-level roles, and it works differently. There is no spine point, because a multi-academy trust chief executive is not on the leadership spine. Instead you select a CEO salary from a dropdown running from £100,000 to £180,000 in £10,000 steps, and the same 70% is applied to it. For London roles the CEO salary is first grossed up by 5.8% — the framework's London weighting variable, stored as 1.058 — and the 70% is then taken from the uplifted figure.

We traced the 5.8% to its source, because it is the one number in the framework that is not simply the statutory pay spine. The Notes sheet attributes it to the Confederation of School Trusts' "Salary survey of executive leadership roles in school trusts 2023". That report, produced with Cendex, found that London CEO salaries stood 5.8% above the whole-sample median, with the median London salary close to £150,000, while salaries outside London sat 7.1% below the whole-sample median. So ISBL has taken an observed regional differential in chief executive pay and applied it to the business leader benchmark. That is a defensible move, but it is an inference rather than a measurement of London CFO pay, and the differential it is based on is now three years old — CST's 2024 report put the London CEO premium at 3.9%, down from 12.2% in 2023, which suggests the figure is volatile.

ISBL is unusually honest about the top of this tier. The Notes sheet says: "The range for CEO salaries goes up to £180,000, but we recognise that when running the formula for CFO/COO pay at levels between £160,000 and £180,000, this may result in salary outliers for the CFO/COO role. The sector will need to determine whether the pay gap between CEO and CFO/COO at the higher end is currently appropriately calibrated." In other words: at the top end, the framework produces numbers ISBL is not confident about, and it says so. That is the kind of caveat most pay benchmarking exercises leave out.

The framework's own data sources

The Notes sheet lists four sources. It is worth knowing what each one actually is, because the framework's credibility rests on them and their accessibility varies enormously.

Taken together, that is a more transparent sourcing trail than most sector pay guidance offers. The weakness is concentrated in one place: the 5.8% London uplift rests on a single line of a three-year-old survey of a different job, and the practitioner-level definitions that drive one of three multipliers are not publicly readable.

What SBM jobs actually advertise at

A benchmark is only interesting next to the thing it is benchmarking. So: what does the job pay in the real market?

The blunt answer is that there is no single market. The title "school business manager" covers a one-form-entry primary post that is part-time, term-time-only and worth under £20,000 in actual pay, and a business manager at a large London secondary on more than three times that. Any average across both is close to meaningless, which is the central difficulty with the market-rate data that does exist.

Glassdoor's UK page for the job title gave an average of £39,964 as at June 2026, with a 25th-to-75th percentile range of roughly £33,924 to £47,080 and a 90th percentile of £54,555, based on a sample of about 122 self-reported salaries. We were unable to load that page directly — Glassdoor blocks automated access — so these figures come from the indexed summary of it rather than from our own read of the page, and we would treat them as indicative rather than authoritative. A 122-person self-selected sample spanning primary and secondary, part-time and full-time, is not a robust national figure. PayScale's equivalent pages gave a UK average of around £35,000 and a London average of around £40,700 on the same date, which is at least directionally consistent.

The NJC spine — the pay scale that actually applies

Most school business manager posts are graded against the National Joint Council for Local Government Services pay spine, the "Green Book". For 2026-27 the national employers and the unions settled on 3.3% on NJC pay points 3 to 43, effective from 1 April 2026 and backdated, with the signed agreement circular published on 24 August 2026. SCP 2 was permanently deleted from the spine at the same date. The national spine now runs from £25,614 at SCP 3 to £56,293 at SCP 43.

That top figure is the single most important number for understanding SBM pay, and it is routinely misstated. The national NJC spine stops at SCP 43. Anything advertised above it — the SCP 44s, 47s and 52s you see in job adverts — is on a locally determined extension, not a national point. We checked three employers' SCP 44 in September 2026 and got three different figures: £57,642 on the model contract scale, £58,261 at Brighton & Hove City Council, and £57,372 at one academy trust. Above SCP 43 the sector has no common currency at all. That is not a footnote — it is the reason it is so hard to say what an SBM "should" earn, and a large part of why the ISBL framework exists.

Here is where the NJC spine sits at the points school business posts typically occupy:

What live vacancies looked like in September 2026

Averages flatten the thing that matters most about this job, which is how wide its range is. These are real posts advertised through the DfE's own Teaching Vacancies service and Tes, with the salary text as published, checked on 17 September 2026. They are illustrations of the shape of the market, not a dataset — job adverts expire.

A few things fall out of that list that are worth saying plainly, because they cut against the way SBM pay is usually described.

The single-school ceiling is lower than the commentary suggests. The highest-paid school-level business manager post we could find live anywhere in London in September 2026 was Highgate Wood at £63,966–£67,575. We searched specifically for London "director of finance and operations" and "chief operating officer" posts in the £70,000-plus band and found none live. That band exists — it just belongs to trust-central roles, and several of the trust-central roles above that clear it are outside London entirely.

Part-time and term-time-only is endemic at the primary end, and it is often obscured. Some adverts quote an actual salary, some quote a full-time equivalent, and the difference can be £10,000 or more on the same post. The Reading advert at £17,196–£23,347 is an actual figure for 25 hours a week across term time; a naive comparison against an FTE figure elsewhere would be meaningless. Always establish which you are looking at.

At trust level, the framework and the market converge. CST's 2025 survey puts the national median for a Level 12 trust operations director at £81,441. The Good Shepherd Trust, Broad Horizons and ODST posts above all bracket that figure, and the ISBL framework generates £84,000 outside London for a trust whose chief executive earns £120,000. Three independent methods landing in the same place is a reasonable sign the number is real.

Why the market and the framework diverge

The gap is not an error in either direction. It is the product of three structural facts, and understanding them is more useful than being indignant about the numbers.

First, the pay spines are different animals, and one of them has a ceiling. Teacher and leadership pay is set nationally through the School Teachers' Review Body, given statutory effect, and runs to £148,829 outside London. Support staff pay is set through the National Joint Council — separate negotiating machinery, a separate settlement, a separate timetable, no statutory backing, and a national spine that terminates at £56,293. The two settlements even move at different rates: teachers got 3.5% from 1 September 2026, NJC staff got 3.3% from 1 April 2026. Benchmarking a Green Book role against the STPCD leadership range is precisely the point ISBL is making, but it means the framework's higher outputs sit above the top of the pay structure most employers would have to use to deliver them. Paying an SBM £72,842 requires a bespoke grade, not a spine point.

Second, school budgets are set at school level and the money is not there. A Group 2 primary outside London running on a few million pounds of funding cannot move its business manager from £38,000 to £44,582 without taking the difference out of teaching staff. The Kreston 2026 report puts average staff costs at around 76% of income irrespective of trust size, with most trust categories having had to devote two additional percentage points of income to staff costs following recent pay and tax announcements. There is no slack in that structure for a 60% uplift to a single post.

Third, and most awkwardly, the framework's own weightings tend to be set low. The three multipliers are assessed by the employer, and every one of them has a defensible argument for a downgrade — the trust runs payroll centrally, so accountability is Partial; the post-holder has a Level 4 diploma rather than a degree; they are an Associate rather than a Lead practitioner on standards nobody in the room has read. Three reasonable-sounding judgements compound into a 25% reduction before anyone has argued about the base figure.

None of that makes the framework useless. It makes it a negotiating instrument rather than a price list, and it is considerably more useful as the former than it would be as the latter.

Qualifications, funding and the Level 7 route

The qualifications weighting is the only one of the three you can change unilaterally, which makes the training ladder the most actionable part of this whole subject. It is also unusually well funded, because the DfE has a direct interest in school financial management being competent.

The entry route is the Level 4 School Business Professional Apprenticeship, DfE standard ST0575. It runs typically 18 months plus an end-point assessment period, carries a maximum funding band of £6,000, and can be paid for through the apprenticeship levy. Notably, the DfE's own occupational standard lists the typical job titles it covers as "School Business Manager, HR Manager, Finance Manager, Office Manager, School Administrator, Business Support Officer, or Bursar" — the department treats all of those as the same occupation, which is a point we pick up in more detail in our comparison of SBM, bursar and trust CFO roles. Completing it makes you eligible for full ISBL membership. On the framework's scale, a Level 4 qualification sits at the 0.9 multiplier. Many providers bundle the Level 4 Diploma for School Business Managers within it, and an ILM Level 5 Diploma is the usual next step, moving you to 0.95.

The step that matters most is the Level 7 Diploma in School Financial and Operational Leadership, developed by CIPFA with ISBL and mapped by CIPFA as broadly equivalent to a postgraduate qualification in degree of challenge. It takes about 12 months. On the ISBL scale it takes you to the full 1.0 qualifications multiplier.

That last point is not speculation. The Academy Trust Handbook 2026, which takes effect on 1 October 2026, tightens the requirements around trust chief financial officers. Paragraph 1.44 has long required that "the board must appoint a chief financial officer (CFO) to whom responsibility for the trust's detailed financial procedures is delegated". What is new is the qualification expectation for larger trusts. For trusts with over 3,000 pupils, any CFO recruitment exercise commencing on or after 1 October 2026 should specify that the person should be a qualified accountant and a member of the relevant professional accountancy body, and/or hold the CIPFA level 7 qualification. From 1 September 2027 the advert must say so, and a trust proposing to appoint someone without those credentials has to tell the DfE in advance and explain why.

That is a genuine change in the shape of the career. It applies only to new recruitment and not to CFOs already in post, and only to trusts above the 3,000-pupil threshold — but it means that from autumn 2027, the route from single-school business manager to trust CFO in a large trust effectively runs through either a chartered accountancy qualification or the CIPFA Level 7 diploma. If that is your destination, the 75%-funded diploma is the cheapest door into it.

Alongside the formal qualifications, the DfE runs a School Resource Management Adviser (SRMA) mentoring programme: a free one-to-one mentoring scheme for school business professionals, pairing them with experienced practitioners to build knowledge, ability and confidence through a peer-to-peer relationship. Places are limited and it is run through academy.questions@education.gov.uk. SRMAs are the experienced school business and finance professionals the department deploys to schools and trusts to review resource management; being mentored by one is unusually direct access to how the DfE thinks about school finances. There is also funded procurement training run with CIPS — a one-day virtual Procurement Fundamentals workshop with fully funded places offered in autumn 2026, and a self-led CIPS-DfE Procurement Foundations course from October 2026 with 400 funded places.

• Level 4 School Business Professional Apprenticeship — DfE standard ST0575, ~18 months plus end-point assessment, £6,000 funding band, levy-fundable. Moves you to the 0.9 qualifications weighting and to full ISBL membership.
• ILM Level 5 Diploma — the usual next step from Level 4. Moves you to 0.95.
• CIPFA/ISBL Level 7 Diploma in School Financial and Operational Leadership — ~12 months, 75% DfE-funded with a £915 balance, postgraduate-equivalent. Moves you to the full 1.0, and is named in the Academy Trust Handbook 2026 as an acceptable CFO qualification.
• SRMA mentoring — free one-to-one mentoring from a School Resource Management Adviser. Limited places.
• CIPS procurement training — DfE-funded Procurement Fundamentals and Procurement Foundations courses running from autumn 2026.

Using the framework in a pay conversation

If you are going to cite the framework to your headteacher, governing body or trust, the way you do it matters. A few things are worth getting right.

Do not lead with 70%. It is the number most likely to end the conversation, because it will read as a demand for a 50% pay rise. Lead instead with the weighted figure the framework actually produces for your specific circumstances, having set the three multipliers honestly. A figure you have derived conservatively is far harder to dismiss than a headline percentage.

Be precise about which headteacher salary you are benchmarking against. The framework is only as good as that input. Headteacher pay is a matter of public record in academy trusts — every trust's annual accounts disclose staff earning above £60,000 in £10,000 bands — and in maintained schools the group ranges above tell you the band. Do not guess.

Argue the weightings separately from the base. They are three distinct judgements, each with its own evidence. Accountability is evidenced by your scheme of delegation and what you actually sign off. Qualifications are evidenced by certificates. Experience is evidenced against the ISBL professional standards. Conflating them into one conversation about whether you are "worth it" is the fastest way to lose all three.

Know what is actually negotiable. In a maintained school, your pay is a function of the grade your post sits in on the local NJC structure — so the winnable argument is usually about regrading the post, which runs through a job evaluation process, rather than about paying you more within the existing grade. In an academy trust the employer has more freedom, which cuts both ways. Either way, the framework is evidence for a job evaluation submission rather than a substitute for one.

Bring the market data as well as the framework. A governing body is more easily moved by three comparable advertised vacancies at neighbouring schools than by a national benchmark. Use the framework to establish the principle and the comparators to establish the price.

What we could not verify

Honesty about gaps is more useful than the appearance of completeness, so here is what this page does not stand behind.

• The ISBL Professional Standards level descriptors. The four practitioner levels that drive the experience weighting — Foundation, Associate, Lead, Strategic — are confirmed from the framework spreadsheet itself, along with their multipliers. The full definitions of what each level means sit in a document that requires ISBL registration to download, which we could not obtain. We have not characterised them.
• The framework's overview document. ISBL publishes a companion PDF explaining the background to the framework's development. It is hosted inside a members' area we could not access. Everything on this page about the framework's rationale comes from the Notes sheet of the spreadsheet itself, which is public.
• The Glassdoor figures. Glassdoor blocks automated access and we could not load the page directly. The average of £39,964, the £33,924–£47,080 interquartile range, the £54,555 90th percentile and the sample size of roughly 122 come from the indexed summary. Treat them as indicative. Self-reported salary aggregators are weak evidence for a job title this internally varied in any case.
• Granular trust CFO and COO pay. The CST survey's public headline reports give national medians and some breakdowns, but the detailed data — by region, trust size and phase — sits behind a Brightmine subscription. There is no free, comprehensive salary table for trust finance leadership in England, and we have not constructed one.
• Whether ISBL has corrected the central-team formula. We identified the error in the file dated 2 September 2026. It may be fixed in a later revision. Check the current file before relying on that row.
• Live vacancy figures over time. The advertised salaries quoted above were read directly from the advert pages on 17 September 2026, with the salary text as the employer published it. Job adverts expire. They are illustrations of where the market sat on one day, not a standing dataset, and a sample of sixteen posts cannot tell you about national distribution.
• Locally determined NJC points above SCP 43. We can state the national spine to SCP 43 with confidence because it is published in the signed NJC agreement. Everything above that is set employer by employer, and there is no national list of what each authority or trust pays at SCP 44 and beyond. The three SCP 44 values quoted above are examples of the variation, not a range.