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Professional services PS-02

UK Accountancy Practices

How accountancy practices make money, where recorded time leaks before it becomes cash, and what transferable firms do differently.

A practice can hold a large recurring fee base and still be economically fragile. Contracted revenue removes the acquisition problem and replaces it with a capacity and realisation problem, which is harder to see because nothing visibly goes wrong. The model is a diagnostic architecture, not a claim that every practice should pursue advisory work or sell to a consolidator.

Evidence read to 28 August 2026. Every figure below is tagged with where it came from.

00

At a glance

ICAEW-registered firms · a floor, not a total

Observed

12,000+

Sole traders and landlords entering MTD from April 2026 · HMRC

Observed

860,000+

Filing events per affected client under quarterly reporting

Modelled

Mid-tier firms expecting a further acquisition within three years · ICAEW

Observed

67%

Published sale multiples of gross recurring fees · brokerage

Observed sample

0.8–1.7×

01

The sector thesis

Five claims that define how UK accountancy practices should be understood.

Accountancy is the first sector in this series whose revenue is contracted by default. A dental practice starts each month having to win it; an accountancy practice starts it holding a fee base that will largely renew whether or not anyone does anything. That single structural difference changes which economic question matters.

01

Retention is nearly automatic, realisation is not

Economic identity

The recurring base renews with very little effort, so the practice never experiences a demand problem. What it experiences instead is capacity consumed without a corresponding fee.

02

Fixed fees move the risk of the hour onto the practice

Modelled mechanism

Fixed-fee pricing does not remove the hour from the economics. It transfers the risk of the hour from client to practice, and a fee that takes forty per cent more hours than assumed becomes an unrecorded write-down.

03

Statute is multiplying work per client, not client numbers

Observed + modelled

More than 860,000 sole traders and landlords enter quarterly reporting from April 2026, with further cohorts in 2027 and 2028. Filing events per affected client rise roughly fourfold while qualified staff supply is unchanged.

04

Lockup is a separate failure mode from profitability

Modelled mechanism

Work in progress and debtor days consume cash independently of margin. A practice can be profitable on paper and unable to pay salaries.

05

The market prices gross recurring fees

Observed structure

Practices transact at 0.8 to 1.7 times gross recurring fees rather than on an earnings multiple. The reported premium condition is an owner who is operationally redundant.

What the sector publishes

  • ICAEW-registered firms in the UK12,000+Observed
  • Entering MTD for Income Tax from April 2026860,000+Observed
  • Qualifying income threshold, April 2026£50,000Observed
  • Mid-tier firms that have acquired another firm~75%Observed
  • Responding mid-tier firms that are private-equity backed~50%Observed
  • Modelled collection from recorded time72%Modelled
  • Total UK accountancy practicesNot established

The title is not protected, no register is comprehensive, and the unregulated segment sits at exactly the small-client end that Making Tax Digital affects most — so the model marks the sector total Not established rather than assembling a plausible figure from overlapping memberships. The more consequential point is what contracted revenue does to feedback. A practice losing money on a client keeps the client, keeps billing the same fee and absorbs the overrun indefinitely. There is no lost pitch and no drop in turnover; the first visible symptom is staff turnover or a cash squeeze.

02

Scope, value chain & archetypes

An unprotected title makes the sector boundary a modelling decision, not a given.

Scope

UK practices whose core economic activity is accountancy, tax compliance, payroll and related advisory work sold to businesses and individuals. Includes regulated and unregulated practices, since the title is not protected. Excludes in-house finance functions, bookkeeping-only operations without compliance responsibility, software vendors and outsourced offshore delivery centres.

The value chain

  1. 01ReferralRecommendation, search or professional introduction
  2. 02EngagementScope, fee and letter of engagement agreed
  3. 03RecordsClient supplies books, receipts and data
  4. 04CompliancePreparation, review and approval
  5. 05FilingSubmission to HMRC or Companies House
  6. 06AdvisoryPlanning, structuring and business support
  7. 07RenewalFee reviewed, engagement continues

Archetype configurations

Sole practitioner

One principal, no leverage. Revenue is capped by the principal’s own productive hours and there is no mechanism by which earnings survive their absence.

Small compliance practice

Around six fee earners on a fixed-fee compliance base. Realisation is the binding constraint because scope is rarely defined tightly enough to bill a variation.

Established general practice

Around eighteen fee earners with a partner group. Qualified staff supply and lockup bind together; growth consumes cash before it produces it.

Advisory-led specialist

Around nine fee earners in a defined niche. Work is value-priced rather than time-priced, so it is written down less as well as charged higher.

Consolidator platform

Private-equity backed, multi-office, acquiring. Value depends entirely on whether the centre improves realisation across acquired books or simply consolidates them.

Unregulated practice

No professional body membership. Real, numerous, competing on price at the small-client end, and absent from every published count of the sector.

Where value accumulates

29%

Compliance delivery

26%

Recurring fee base

23%

Advisory attach

Data / financeability

Value in accountancy accumulates in the fee base and in what sits on top of it. Compliance delivery is necessary and confers no advantage — it is a statutory obligation any competent practice can discharge. Advantage begins with a recurring base that renews at a defensible price, compounds through advisory attach, and is realised only when that base is legible enough to survive the owner leaving.

A practice that owns compliance delivery but not scope control or advisory attach has built the laborious half of the value chain and given away the profitable half.

Including unregulated practices is deliberate: a small compliance firm losing price-sensitive clients is usually losing them to a competitor with a lower cost base and no professional indemnity or CPD obligation, not to another ICAEW firm. The six archetypes are configurations rather than stages, and each fails in its own direction. The sole practitioner fails on capacity, having no leverage. The small compliance practice fails on realisation, having leverage but no scope control. The established general practice fails on lockup. The consolidator fails on integration, because buying a fee base does not improve realisation on it.

03

Market structure & demand

Demand is contracted by default and about to be multiplied by statute.

Accountancy has the opposite measurement problem to most sectors in this series. The demand change is precisely known because it is legislated; the market itself is not countable because the title is not protected and no register is comprehensive.

Demand segments

Micro and sole trader

Lowest fee per client, highest event count under quarterly reporting. The segment MTD affects most and the segment least able to absorb a fee increase.

Landlord and property

Entering quarterly reporting on the same timetable. Often previously a single annual return with minimal contact.

Owner-managed limited company

The commercial core of most practices. Statutory accounts, corporation tax, payroll and director returns bundled into one recurring fee.

Growing SME

Buys compliance and increasingly buys advice. The segment where advisory attach is realistic rather than aspirational.

Specialist and niche

Research and development claims, crypto, tech startups and similar. Value-priced, written down least, and the stated condition for premium sale multiples.

Price-led switcher

Buys on fee alone, frequently from unregulated providers. Reliably unprofitable to serve at the price it will pay.

The demand regime

Statutory obligation to buyNear absolute
Client retention without effortVery high
Price sensitivity, complianceHigh
Price sensitivity, advisoryLow
Switching cost once engagedHigh

Commercial conclusion

Demand for accountancy is not merely strong, it is compulsory, and statute is about to increase the quantity of it required per client. The question is not whether the work exists. It is whether the practice has the capacity to deliver four filing events where it previously delivered one, at a fee that reflects the difference.

Structural anchors

In scope for MTD for Income Tax from April 2026 · HMRC

Observed

860,000+

Threshold from April 2027, extending the cohort

Observed

£30,000

Threshold from April 2028

Observed

£20,000

Total UK accountancy practices

Not established

What this model does not claim

Not established

This model does not publish a UK accountancy market size, a national count of practices, or an average charge-out rate. The title is unprotected, no register is comprehensive, and no professional body collects fee data. The 12,000+ ICAEW figure is cited as a floor for registered firms and is not a sector total.

Making Tax Digital is discussed as an opportunity; read carefully it is a capacity shock arriving as a compliance obligation. Client numbers do not change — filing events per affected client rise roughly fourfold, while the supply of qualified staff and the number of productive hours in a fee earner’s year do not move on that timetable. The increase has to be absorbed by higher fees, higher throughput per hour or lower realisation, and only the second improves the business. The segment most affected is also the lowest-fee one.

04

Revenue architecture

Fixed fees do not remove the hour; they move its risk onto the practice.

Revenue begins with purchased fee-earner capacity and improves in quality as more of it is sold against value rather than against time — through defined scope, billed variations and advisory work the client cannot obtain a comparative quote for.

Revenue layers

Recurring compliance

Statutory accounts, tax returns, payroll. Contracted, renewing, and priced against competitors including unregulated ones.

Event-driven work

Incorporations, disposals, enquiries, funding support. Unpredictable in timing, better priced than compliance.

Advisory and specialist

Planning, structuring, research and development claims, niche work. Value-priced and written down least.

Revenue identity

Practice revenue = productive fee-earner hours × realisation × realised fee per hour

Value anchors · observed and modelled

Practice sale price · multiple of gross recurring fees

1.2×
0.8×1.7×

Modelled realised fee per productive hour · by archetype

£81
£55£140

GRF multiples published by UK practice brokerages

Observed sample · brokerage

0.8–1.7×

No professional body collects UK accountancy fee or charge-out rate data.

Not established

No fee register

Modelled realisation waterfall

Time recorded100%
After write-down88%
After scope creep79%
After lockup ageing74%
Collected72%

What the waterfall shows

Twenty-eight pence in the pound of recorded time never becomes cash, and almost none of it is lost to competitive pricing. It is lost to scope that was never defined and to write-downs that were never recorded as a decision. Both are internal, both are addressable, and neither appears on any report the practice currently produces.

The revenue-quality path

  1. 01Low visibilityTime-priced compliance, undefined scope
  2. 02ModerateFixed fee with defined scope and billed variations
  3. 03HigherRecurring base plus systematic advisory attach
  4. 04Platform qualityNiche positioning and an operationally redundant owner

The GRF multiples are published by commercial brokerages and describe practices that came to market; they are not a valuation and not a census. Realised fee per hour is modelled throughout, because no professional body collects rate or fee data.

Almost every other sector in this series transacts on a multiple of earnings; accountancy transacts on a multiple of gross recurring fees, and the convention is informative rather than merely conventional. It says buyers believe they are acquiring an annuity and intend to apply their own cost structure to it — they are explicitly not buying the seller’s margin. Read as a ladder rather than a valuation, 0.8 to 1.7 times is a specification: it states, in the market’s own terms, what has to be true for a fee base to be worth half as much again.

05

Unit economics

Modelled archetype corridors, not reported sector averages.

The same sector produces very different economics when realisation, service mix, staff leverage and lockup change. Principal fee-earning time is normalised to a market replacement rate before economic EBITDA, which is what separates a practice from a well-paid job.

Small compliance · 6 fee earners

Revenue · downside, base, high

£350k · £420k · £495k

Normalised EBITDA

Downside£42k
Base£63k
High£89k

Realisation binds. Fixed fees meet uncontrolled scope and the overrun is invisible.

Established general · 18 fee earners

Revenue · downside, base, high

£1.19m · £1.45m · £1.74m

Normalised EBITDA

Downside£214k
Base£305k
High£418k

Staff supply and lockup bind together. Growth consumes cash before it produces it.

Advisory-led · 9 fee earners

Revenue · downside, base, high

£930k · £1.15m · £1.38m

Normalised EBITDA

Downside£223k
Base£322k
High£442k

Highest margin, hardest ceiling: partner expertise cannot be delegated at the rate it earns.

Base central model: 1,150 productive hours per fee earner per year · 86% realisation · £81 modelled realised fee per productive hour

Three break-evens

Contribution break-even

Fee-earner staff cost covered

EBITDA break-even

Support, premises, software and professional cost covered

Cash-survival break-even

Lockup funded — the one most often missed

All values are modelled archetype configurations. Actual results depend on service mix, staff leverage, partner remuneration policy, location, lockup and tax treatment. No professional body publishes UK accountancy practice margins, so no observed benchmark is available to bracket these corridors against.

Contribution and EBITDA break-even both appear in the management accounts; cash-survival break-even appears nowhere unless somebody calculates it. Lockup is the reason. A practice growing fifteen per cent a year on 110 modelled days is funding a permanently expanding block of unbilled and uncollected value out of its own working capital, which produces the sector’s characteristic failure: a profitable, growing practice that cannot pay salaries. Nothing in the profit and loss account warns of it, because on an accruals basis the practice genuinely is profitable.

06

Capacity & the overhead staircase

Capacity is productive fee-earner hours, and statute is about to consume them.

Qualified fee-earner capacity binds before client demand in every released archetype, and statute is about to consume more of it per client. Recruitment, delegation depth, review load and records chasing determine whether purchased capacity is economically used.

The capacity equation

Productive fee-earner hours

Contracted hours less leave, CPD, administration and non-chargeable time. Modelled at 1,150 hours per fee earner per year against 1,750 contracted.

Realisation

The share of work performed that survives write-down, scope creep and lockup ageing to become a collected fee. Modelled at 72% from recorded time to cash.

Realised fee per productive hour

Set by service mix far more than by rate card. The term with the widest available range and the one advisory attach moves.

Modelled realisation rate, by archetype

Advisory-led specialist90% real.
Established general practice86% real.
Small compliance practice84% real.
Sole practitioner82% real.
Modelled practical ceiling93% real.

Realisation rises with service mix rather than with effort. Advisory work is written down less because the client has no hour count to dispute, which is why the advisory-led archetype leads this chart without working harder than the others. No professional body publishes UK realisation rates; every figure here is modelled.

Modelled productive hours per fee earner per year

Modelled

1,150

Six hundred hours of every contracted year are already gone to leave, CPD, administration and non-chargeable work before a single client is served. Quarterly reporting takes its share from what remains, not from the six hundred.

The overhead staircase

  1. 01Second fee earnerReview capacity and delegation discipline
  2. 02Practice managerPrincipal steps back from administration
  3. 03Manager tierReview no longer sits with the principal
  4. 04Records automationChasing stops consuming fee-earner hours
  5. 05Second office or niche teamCentral billing, lockup and realisation reporting
The question is never whether to grow but which step is next and what has to be true before it pays for itself. The records-automation rung is the one most often skipped and the one quarterly reporting makes unavoidable.

The gap between 1,750 contracted hours and 1,150 productive ones is mostly legitimate — leave, CPD, training, practice administration. What makes it worth examining is that a meaningful share of the remainder goes on chasing client records, which is fee-earner time producing no billable output at all, and quarterly reporting multiplies exactly that cost: one records request a year becomes four, at the same chase length each time. Records automation is therefore the only rung that recovers hours from the six-hundred block rather than competing for hours inside the eleven-fifty.

07

Customer journey & cohorts

Retention is nearly automatic; realisation is not.

Accountancy does not usually have a retention problem. It has a realisation problem, and the losses occur after the client has already been won, inside work the practice has already agreed to perform.

The pipeline

  1. 01EngagementScope and fee agreed
  2. 02Records inClient supplies the data
  3. 03Work performedPreparation and review
  4. 04BilledFee raised after write-down
  5. 05CollectedCash received
  6. 06RenewedEngagement continues

Episode corridors

Modelled collection from recorded time

Modelled

72%

Modelled realisation, central archetype

Modelled

86%

Modelled lockup days by archetype

Modelled

85–130

National realisation benchmark

Not established

Lifetime value in accountancy is very long and correspondingly easy to abuse. A recurring client may stay for fifteen years, which makes almost any acquisition cost or fee concession defensible on a spreadsheet. The model treats lifetime value as a retention outcome measured after the fact, never as a forward justification for underpricing an engagement today.

The dataset a diagnosis needs

  • Productive hours per fee earner
  • Hours recorded by job
  • Realisation by job
  • Realisation by client
  • Write-downs by approver
  • Scope variations billed
  • Work-in-progress days
  • Debtor days
  • Recurring fee base
  • Advisory revenue share
  • Clients affected by MTD
  • Fee per affected client

Ask a prospect for these twelve figures. Most practices can produce the fee base, the debtor days and the hours recorded. Realisation by client, write-downs by approver and scope variations billed are the ones that are missing, and they are the three that bracket the entire loss.

The modelled waterfall loses twelve points at write-down, nine to scope creep, five to lockup ageing and two to bad debt, and almost none of it is competitive. Write-down is usually a partner deciding at the point of billing that the recorded time cannot reasonably be charged; the decision is often correct, and it is costly because it is rarely recorded with a reason, so nobody can tell whether the job was mispriced, performed inefficiently or supplied with poor records. Scope creep is the same loss earlier and far more tractable.

08

The financeability ladder

The market values gross recurring fees, which tells you what buyers think they are buying.

Accountancy has an unusually explicit financeability ladder, because the market states its own premium conditions. Practices transact at 0.8 to 1.7 times gross recurring fees, and the reported conditions for the top of that range are a specification rather than an opinion.

01

Principal fee-earning

The principal delivers the majority of chargeable work and holds the client relationships. Earnings are a job.

Cost principal chargeable time at a market rate and see what remains.

02

Leveraged delivery

Fee earners deliver, but review still sits with the principal. Capacity is capped by review load rather than by team size.

Measure the proportion of completed work reviewed by a partner.

03

Controlled scope

Engagements are scoped, variations are recorded, and write-downs are decisions with named owners.

Instrument realisation by job and by client.

04

Advisory attach

A measured share of the recurring base buys value-priced work each year. Realisation and rate rise together.

Report advisory revenue share and attach rate against the compliance base.

05

Transferable annuity

Above £1m of recurring fees, full management team, operationally redundant owner, defined niche.

This is the reported condition for 1.5 to 1.7 times gross recurring fees.

Consolidation signal

ICAEW research on mid-tier firms finds nearly three-quarters have acquired another firm, 80% have made at least one acquisition and 67% expect a further acquisition within three years. Nearly half of responding firms are private-equity backed. Separately, 44% of the UK top 100 firms engaged in merger and acquisition activity during 2025. Client base expansion is the dominant stated driver, ahead of skills, geographic reach and succession.

GRF multiples are published by commercial brokerages and describe practices that came to market. They are cited here as an observed sample with the source named. This model does not value practices and no figure here should be read as a valuation.

Private-equity penetration of the mid-tier now runs to roughly half of responding firms, and the transaction convention states what that capital is buying: an annuity to which the buyer intends to apply its own cost structure. For an independent practice the reading is straightforward — competing on price is unattractive, because cost of capital and central technology spend are both structurally better on the other side, while competing on realisation and niche is viable, because those are operating properties that capital does not confer. Rung three is where that starts.

09

Risk & sensitivity

For the central archetype, service mix and realisation are the widest modelled movers.

Modelled effect on normalised EBITDA of a one-standard-step move in each driver, established general practice, widest first. As in every professional-services archetype, the two widest movers are both revenue-side.

Modelled EBITDA sensitivity

Realised fee per hour, service mixwidest
Realisation ratevery wide
Fee-earner staff cost percentagewide
Productive hours per fee earnerwide
Lockup daysmoderate
Support and admin cost percentagenarrow

Reading the order

Lockup ranks fifth on EBITDA and first on survival. That inversion is deliberate and is the most important thing on this page: the driver with the fourth-narrowest effect on reported profit is the one most likely to stop a growing practice paying its staff.

Scenarios

Downside · MTD absorbed

Quarterly reporting is taken inside existing fees. Filing events rise fourfold for affected clients, realisation falls, and margin compresses toward the bottom of the corridor with no visible revenue event.

Base · MTD repriced

Fees rise to reflect event count. Some churn at the lowest-fee end. Realisation holds at 86%, £81 per productive hour, roughly £1.45m and 21% normalised EBITDA.

High-performing · MTD re-engineered

Records capture and quarterly submission automated so events per hour rise. Four points of realisation and £6 per hour add roughly £135,000 with no additional headcount.

Scaled winner · niche annuity

Above £1m recurring fees, full management team, operationally redundant owner and a defined niche. The reported condition for the top of the sale-multiple range.

Indicators worth watching

  • Realisation by client, monthly
  • Write-downs by approver
  • Scope variations recorded against billed
  • Work-in-progress days
  • Debtor days
  • Proportion of work reviewed by a partner
  • Advisory revenue share
  • Records-in date against deadline
  • Fee per client affected by MTD
These are modelled sensitivities on archetype configurations, not forecasts and not causal claims. That realisation and margin move together in the model does not establish that a given practice will improve margin by pursuing realisation; it establishes where to look first. Causation must be tested on the operator’s own data before any intervention is priced.

Lockup sits fifth by effect on normalised EBITDA and first by effect on whether a practice survives a growth phase; both are true and they are not in tension. Reported profit is calculated on an accruals basis, so work performed but unbilled and fees billed but uncollected both count as earned, and a practice can report a rising margin while its cash position deteriorates every month with no warning in the accounts. The MTD scenarios carry the same shape: absorb, reprice and re-engineer are the only three, and a practice choosing none has chosen to absorb.

10

AI & operating systems

Technology creates value only when it changes a measurable operating driver.

Technology creates value in accountancy only when it moves one of the drivers on the previous page. This is not a software catalogue. Each intervention below names the driver it moves, the operator data it requires and the commercial test that decides whether it worked.

The drivers an intervention has to move

Realised fee / hour

Service mix and pricing basis

Realisation

Recorded time surviving to cash

Productive hours

Recovered from non-chargeable time

Lockup days

Work in progress plus debtors

Review load

Proportion reviewed by a partner

Records capture and automated chasing

Driver: productive hours. Chasing is fee-earner time producing no billable output, and quarterly reporting multiplies it fourfold. Test: records-in date against deadline, and fee-earner hours spent chasing.

Scope definition and variation capture

Driver: realisation. Work performed inside a fee that did not price it is an unraised variation. Recording variations makes the giveaway visible even when it is not billed. Test: variations recorded against variations billed.

Write-down recorded as a decision

Driver: realisation. A write-down with a named owner and a reason becomes data; one without becomes an unexplained gap. Test: realisation by client and by approver, before and after.

Quarterly submission pipeline

Driver: realised fee per hour. The response that raises filing events per productive hour rather than trading fee against margin. Test: hours per affected client per quarter.

Lockup and staged billing discipline

Driver: lockup days. Billing on agreed stages rather than on completion shortens the cycle without changing the fee. Test: work-in-progress days and debtor days.

Advisory attach identification

Driver: realised fee per hour. The compliance base already contains the trigger events; they are simply not surfaced. Test: advisory attach rate against the recurring base.

The commercial test that governs all six

Every intervention must name the driver it moves, the figure that will change, the measurement window and the threshold below which it is judged not to have worked — before it is built. An intervention that cannot state those four things in advance is not an economic intervention and should not be bought as one.

Sequence

Measure first, intervene second, re-measure third. In accountancy the correct order is almost always: instrument realisation, control scope, recover hours from chasing, then attach advisory. Attempting advisory attach first produces senior overruns on undefined scope.

Almost every practice can be sold software promising efficiency, and for most that is the wrong first move: efficiency applied to work whose profitability is unknown simply produces the same unknown result faster. Instrumenting realisation is unglamorous and cheap — hours by job, write-downs by approver, variations raised, three fields most practice management systems already hold and few populate with any discipline. Once they exist the practice discovers which clients it is losing money on, which is frequently the most valuable output of the exercise and arrives before anything is built.

11

Maturity — from model to diagnosis

The sector model becomes commercially useful when a named operator is scored against it.

The sector model becomes commercially useful at the moment a named practice is scored against it. The eight dimensions below convert everything in this model into a diagnostic that can be completed in a single working session with the practice’s own data.

Eight dimensions

Capacity visibility

Productive hours per fee earner, stated and reconciled

Realisation discipline

Realisation by job and by client, reviewed on a cadence

Scope control

Variations recorded against variations billed

Lockup governance

Work-in-progress and debtor days managed to a target

Revenue quality

Advisory and event-driven share of the recurring base

Delegation depth

Proportion of completed work reviewed by a partner

Principal replaceability

Chargeable work deliverable at market rate without the principal

MTD readiness

Affected clients identified, priced and pipelined

Scored one to five

  1. 1Absent — the figure is not held
  2. 2Anecdotal — known by feel, not recorded
  3. 3Recorded — captured but not reviewed
  4. 4Managed — reviewed on a cadence with an owner
  5. 5Governed — targeted, forecast and acted on

What the scoring needs

  • Productive hours per fee earner
  • Realisation by client
  • Write-downs by approver
  • Scope variations recorded and billed
  • Work-in-progress and debtor days
  • Advisory revenue share
  • Work reviewed by a partner
  • Clients in scope for MTD and their fees
A practice scoring at levels one and two across realisation, scope control and MTD readiness does not have a growth problem, whatever it believes. It has an instrumentation problem arriving at the same time as a statutory capacity shock, and instrumentation is both cheaper to fix and faster to prove than growth. Scoring the practice against these eight dimensions is what turns this sector model into a specific, priced piece of work.

The eight dimensions are scored against the practice’s own figures rather than against an interview, and in accountancy that distinction is especially sharp: principals are numerate and confident about numbers they have not actually calculated. Where a figure cannot be produced the dimension scores one, which is the finding rather than a penalty. Sequencing then follows the sensitivity ordering with one deliberate exception — where lockup governance scores at level one and the practice is growing, it is addressed first regardless of its fifth-place ranking, because that failure is terminal rather than gradual.

This is a sector-level economic model, not operator-level advice. Built from statutory, professional-body and transactional evidence, the legislated Making Tax Digital timetable, five archetype configurations and the Axial Economic OS. Observed facts, inferences, estimates and modelled values stay visibly separate. Evidence was read to 28 August 2026. Modelled values are archetype configurations rather than reported sector averages or benchmarks, and nothing here is a forecast. Where the sector supports no defensible figure the model says Not established rather than substituting a plausible one. A named-operator diagnosis confirms every relevant figure against that operator's own data before any intervention is priced.

See where your business sits against this model.

The model is the sector's. The numbers are yours. The diagnostic prices the gap between the two.