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"What is my fee book worth?" is the most common first question from a retiring principal and the one most often answered with confident-sounding rules of thumb that turn out, on examination, to be wrong.
What is your accountancy practice's value? The two main approaches
The accountancy practice valuation question, what is your accountancy firm actually worth and how does a buyer get from a fee book to a transaction value, is where most retiring principals start when they begin thinking about selling your practice. There are two main valuation methodologies in the UK accountancy market in 2026: the GRF (gross recurring fees) multiple and the EBITDA multiple. Smaller accounting practices (under £750k of fees) are valued on GRF; larger businesses (above £1.5m) on EBITDA; in between, both apply with a blended weighting.
The EBITDA approach, relevant to firms above the £750k threshold, is summarised at the end and covered fully on the deal structure page. Whichever method applies, the same eight factors move your accountancy practice valuation up or down within the typical range.
Accountancy practice valuation: the GRF multiple in detail
For a practice with annual gross recurring fees of £X, the GRF-method value is X multiplied by a multiple between roughly 0.7 and 1.5. The accountant-friendly version: a £500k-fee practice priced at 1.0x GRF is valued at £500,000; at 1.3x, £650,000. The headline value sits in this range; the eight factors below determine where in the range your specific practice lands. When valuing a fee book the process is the same regardless of who the buyer is: anchor on the GRF multiple, then adjust against the eight factors.
The valuation any specific buyer offers is also a function of who the buyer is. A PE-backed consolidator will quote a higher headline GRF multiple than a chartered firm direct buyer, but the consolidator's structure (multi-year earn-out, equity rollover) can mean the seller's net-to-pocket is similar or lower. The accountancy practice valuation that matters to you as a seller is the net amount that lands in your bank account, not the headline number on the heads of terms.
The headline rule, and why it is incomplete
The headline rule that most sellers have heard is "one times GRF". Multiply your gross recurring fees by one, and that is the value of your book.
The rule is roughly right at the average. It is wrong at the edges, and the edges are where most sellers actually sit. A premium book might trade at 1.4x GRF; a problematic book might trade at 0.7x GRF. The difference between those two is the difference between being an unhappy £350k surprise and a happy £700k surprise on a £500k book.
The eight factors that move a UK accountancy book between 0.7x and 1.4x GRF are listed below.
The eight factors that move the multiple
The multiple any buyer applies to your gross recurring fees, the headline figure that determines your accountancy practice valuation, moves up or down based on eight factors. A clean general-practice book with strong recurring revenue lands at 1.0x to 1.3x. A premium book, with high recurring proportion, well-distributed clients, and sector specialisation that fits the buyer strategically, can reach 1.5x. A practice with concentration risk or a thin recurring base lands at 0.7x to 0.9x. The accountancy firm valuation any buyer offers reflects all eight factors weighted against their internal economics. Buyers with experience pricing fee books across multiple regions tend to weight the eight factors consistently; less seasoned buyers default closer to the headline rule.
Each factor below is a lever on the multiple. The accountant selling the practice can influence some of them in the 12 to 24 months before sale (recurring proportion, client concentration, operational hygiene). Others (geography, practice size) are fixed by the time you are at the valuation conversation.
Factor 1: recurring proportion
The single biggest swing factor. A book where 80 per cent or more of fees are recurring (annual compliance, monthly bookkeeping, regular advisory retainers) is fundamentally more valuable than a book where 50 per cent of fees are project-based (M&A advisory, one-off tax planning, transactional work).
The reason is buyer-side risk. The recurring portion is reasonably predictable post-acquisition; the project portion depends on continuing client behaviour and continuing relationships, neither of which the buyer controls.
Realistic premium for high recurring proportion: +0.10 to +0.15 multiple points (so a base 1.0x book becomes 1.10 to 1.15x).
Realistic discount for low recurring proportion: -0.10 to -0.20 multiple points.
Factor 2: client concentration
A book where the top client accounts for more than 15 per cent of total fees is meaningfully riskier from the buyer's perspective than a book where the top client is at 5 per cent. If the top client leaves in year one of acquisition, the impact is binary in the first case and modest in the second.
Realistic discount for high client concentration: -0.05 to -0.15 multiple points, depending on severity.
Factor 3: practice size
Smaller books trade at lower multiples per pound of fees, because the fixed deal costs (solicitor fees, due diligence, integration setup) are spread over a smaller revenue base. A £150k book typically trades at the lower end of the multiple range; a £750k book at the higher end.
Realistic spread between £150k and £750k books: 0.15 to 0.25 multiple points.
Above £1m, the EBITDA multiple becomes a more meaningful basis than the GRF multiple, and PE platforms enter the buyer pool at higher numbers than regional chartered firms can match. Many regional buyers do not quote on books over £1m for that reason.
Factor 4: geography
Buyers prefer books that are close to their existing operations, because the integration economics work better and because client retention through transition benefits from physical continuity. A book in Greater Manchester sells at a higher multiple to a Greater Manchester buyer than the same book sells to a London buyer. The geographical factor is more significant for direct buyer transactions than for broker-introduced ones (because brokers introduce nationally).
Realistic effect on multiple: 0.05 to 0.10 multiple points, depending on buyer match.
Factor 5: niche specialisation
A book with a specialisation that fits the buyer's strategic direction commands a premium. Tax-led practices, niche-sector advisory practices, and HNW personal tax practices typically attract higher multiples than general-practice books, because they fit fewer buyers but those buyers value the fit highly. Growth trajectory in the niche matters too: a tax book in a specialism with rising demand prices ahead of one in a flat or declining segment.
The same specialisation that is valuable to one buyer is irrelevant or actively unhelpful to another. A media-sector tax practice is gold to a buyer with a media client base and irrelevant to a regional general practice.
Realistic effect: -0.05 to +0.20 multiple points depending on buyer match.
Factor 6: principal's continuing involvement
Buyers value books where the principal will remain modestly involved through the transition (because client retention benefits) but will not insist on continuing involvement as a deal condition. The optimum is "available for handover but planning to retire."
Books where the principal must continue working full-time for the buyer typically trade at lower headline multiples but with employment terms that capture the difference. Books where the principal is unable to be involved in transition (illness, urgent retirement, disability) trade at meaningful discounts because client retention risk is higher.
Realistic effect: 0 to -0.10 multiple points for awkward continuing-involvement situations.
Factor 7: PII history and regulatory record
A clean ICAEW practice review history, a clean PII claims history, and the absence of any unresolved regulatory issues are baseline expectations. Books that have any of these are subject to deeper financial due diligence and to specific contractual protections (warranties, indemnities, escrow arrangements) that effectively reduce the headline price.
Realistic discount for any unresolved regulatory issue: -0.05 to -0.20 multiple points.
Factor 8: data quality and operational hygiene
Clean management accounts, organised client files, up-to-date professional clearances, properly licensed software, and a working IT setup are all worth real money in the deal. They reduce due diligence cost, transition risk, and integration cost. The buyer is buying a book, but the buyer is also buying the operational state of the practice. The financial data the buyer wants to see (three years of management accounts, fee reconciliations, WIP and debtor schedules) should be ready before the first conversation.
The principal who, in the two years before sale, invests in cleaning up file structures and management accounts captures most of that value. The principal who treats the operational state as someone else's problem post-completion does not.
Realistic effect: 0 to +0.10 multiple points for genuinely clean operations.
Putting it together
An illustrative example. A £400k general-practice book in Greater Manchester, 75 per cent recurring, top client at 12 per cent of fees, no specific niche, principal planning to retire and willing to do a 3-month handover, clean PII record, decent management accounts:
- Base multiple: 1.00x (general regional practice baseline)
- Recurring proportion (good): +0.05
- Client concentration (acceptable): 0.00
- Practice size (in mid-range): 0.00
- Geography (good match for Manchester buyer): +0.05
- Niche (none): 0.00
- Continuing involvement (optimal): 0.00
- PII history (clean): 0.00
- Operational hygiene (decent): +0.02
Result: 1.12x GRF, equivalent to £448k headline value.
The same book to a buyer outside the North West, with marginally lower recurring proportion (60 per cent rather than 75 per cent), would price closer to 1.0x GRF or £400k.
The same book with one client at 25 per cent of fees and a lapsed PII excess incident would price closer to 0.85x or £340k.
The range from worst to best case for this size of book is therefore around £340k to £480k, a swing of £140k. The factors that drive that swing are largely under the seller's control if addressed two to three years before sale. The tax treatment of the headline number sits in a separate workstream from the valuation itself, and the questions to put to your own adviser are set out in the tax structuring questions to take to your independent adviser.
Implications for sellers thinking about exit
The two practical conclusions are:
First, the "one times GRF" rule is a starting point, not an answer. Take a serious look at your specific book against the eight factors above before assuming the rule applies to you. The variance is large enough to be worth the analysis.
Second, the factors that move the multiple are mostly addressable in the two-to-three years before exit. Cleaning up client concentration, building recurring revenue, sorting out PII history, tidying management accounts: these are real value-creation activities. The principal who runs them in good time captures the value. The principal who treats deal preparation as a 12-week exercise does not.
If you would like a specific indicative valuation for your book under our pricing model, the practice valuation tool walks through the eight factors in 90 seconds. The result is a range, not a quote, but it is the same range we would arrive at internally before a serious conversation.
When does the EBITDA method replace the GRF multiple?
The GRF method covered above is the right frame for the small and lower-mid practice market. Once a practice gets larger, the value of the business stops being defined by the fee book and starts being defined by what falls to the bottom line after running the practice. The cut-offs UK acquirers actually use in 2026 are:
- Under £750k of fees: pure GRF method, as set out above.
- £750k to £1.5m: blended, with proportional weighting between GRF and EBITDA.
- Above £1.5m: pure adjusted EBITDA, with the multiple varying by size and quality.
The £750k cut-off is not arbitrary. Below it, the practice essentially is the fee book; costs scale with revenue, margin is reasonably stable across the segment, and the buyer's mental model is "what does the recurring revenue stream cost me to acquire". Above £1.5m the picture changes. The practice carries enough overhead structure (partner-level capacity not directly billing, dedicated compliance support, separate IT and finance functions) that two practices with identical fees can produce very different profit lines. At that scale, profitability becomes the defining metric and EBITDA is the honest basis for valuation.
An honest note on the buyer pool. Jack Ross sits at the GRF end of this market as a direct acquirer. Practices in the EBITDA bracket are typically sold to private equity-backed consolidators rather than to other independent firms, because the cheque sizes involved are difficult to fund from a single regional firm's balance sheet. The breakdown of which buyer is realistic at which size sits in our analysis of PE versus trade buyers.
What "adjusted EBITDA" actually means for an accountancy practice
Standard EBITDA is earnings before interest, tax, depreciation, and amortisation. The figure buyers price against is adjusted EBITDA (also called normalised or owner-adjusted). Adjustments matter because a sole-practitioner or two-partner firm's statutory profit is shaped by the owner's compensation choices, not by what the business would earn under professional management.
Typical adjustments:
- Owner remuneration above market rate. If the owner draws £150,000 out of a practice that, post-acquisition, would be run by a salaried manager on £75,000, the £75,000 differential is added back.
- Discretionary spending. Owner pension contributions above market employer level, entertainment, vehicles run through the business, and similar outflows are normalised.
- Non-recurring expenses. One-off legal fees, bad-debt write-offs, IT rebuilds, partner buyouts, anything that will not repeat in the buyer's hands.
- Non-cash items. Stripped out so the figure represents cash-generating capacity.
A hypothetical illustration. A practice with £1.2m turnover and £400,000 of accounting profit. The owner draws a £150,000 salary; a replacement manager would cost £75,000. Adjusted EBITDA is £400,000 + £75,000 = £475,000. That £475,000 is the figure the buyer multiplies, not the statutory profit.
The multiplier band by practice size
The multiplier the buyer applies to adjusted EBITDA widens as the practice gets larger, because scale unlocks a broader institutional buyer pool. The bands the sellmyfees calculator uses, which mirror the bands we see in current UK market transactions, are:
| Practice turnover | Adjusted EBITDA multiple | Mid-point |
|---|---|---|
| £1m to £3m | 4x to 6x | 5.0x |
| £3m to £10m | 5x to 7x | 6.0x |
| £10m and above | 5.25x to 7.75x | 6.5x |
Within each band, the multiplier moves up or down on the same eight factors set out earlier (recurring proportion, client concentration, regulatory record, operational hygiene, and the rest), plus a margin adjustment specific to practice type.
EBITDA margin assumptions by practice type
Where actual management accounts are weak or incomplete, buyers fall back on benchmark margins for the practice type, then adjust where actuals are available. The benchmarks we see in 2026 UK transactions:
- General practice: around 28 per cent EBITDA margin.
- Audit-led: around 25 per cent (compliance burden from ISA 540 and rising PII costs compress the margin).
- Tax-led or advisory: around 35 per cent.
- Mixed: around 30 per cent.
A buyer assessing a tax-advisory practice actually running at 25 per cent applies a downward adjustment to the multiplier; under-performance against benchmark suggests either an addressable cost structure (which the buyer captures) or a structural issue with the book.
How the blended bracket works in practice
For practices between £750k and £1.5m of fees, the calculator weights GRF and EBITDA outputs proportionally. The weight on the EBITDA component is (fees minus £750,000) divided by £750,000, so a £1m practice sits at 0.33 EBITDA-weight and 0.67 GRF-weight; a £1.5m practice sits at 1.00 EBITDA-weight and the method becomes pure EBITDA.
A worked example. A hypothetical general-practice firm with £1m of fees, 75 per cent recurring, no client concentration issue, sitting in Greater Manchester:
- EBITDA weight: (1,000,000 minus 750,000) divided by 750,000 = 0.33.
- GRF method: £1,000,000 multiplied by 1.2x (mid-range for a clean general book in the £1m bracket) = £1.2m.
- EBITDA method: £1,000,000 multiplied by 30 per cent assumed margin = £300,000 adjusted EBITDA; multiplied by 5.0x (mid of the £1m to £3m band) = £1.5m.
- Blended value: (1 minus 0.33) multiplied by £1.2m, plus 0.33 multiplied by £1.5m = £0.80m plus £0.50m = £1.30m.
The blended figure sits between the pure-GRF and pure-EBITDA outputs, as you would expect. Actual valuations depend on the eight factors and on real management accounts, not benchmark margins. The practice valuation tool runs this decision tree across all three brackets in 90 seconds.
Why EBITDA usually shows a higher headline, but not always more cash
Adjusted EBITDA at a typical multiplier produces a higher headline than GRF at a typical GRF multiple on most well-run practices, because EBITDA captures the operating gearing of a larger firm and GRF does not. A clean tax-advisory book at £1.2m of fees, 35 per cent margin, produces a £420,000 EBITDA which at 5x is £2.1m of headline value, against a GRF calculation of £1.2m at 1.3x = £1.56m. The EBITDA number is meaningfully larger.
The cash picture is often different. PE-style EBITDA transactions in the UK accountancy market in 2026 typically come with:
- Multi-year earn-out periods, commonly three to five years, with performance targets that must be hit.
- Rollover equity, often 20 to 30 per cent of consideration paid in shares of the acquirer, not cash.
- Tighter retention tests with clawback that bites across the full deferred consideration, not just the final tranche.
- Restrictive covenants that constrain post-completion activity for the seller.
Net to the seller's bank, a clean GRF-method transaction (50 per cent on completion, 25 per cent at month 12, 25 per cent at month 24, single 85 per cent retention test at month 24 applied only to the final tranche) can deliver more cash, sooner, with less risk, than an EBITDA-method transaction at a higher headline. The structure of the deferred consideration matters as much as the multiple. The mechanics of the Jack Ross structure, and how to read it against a PE-style earn-out, sit on the deal structure page.
When the EBITDA frame is the wrong frame
EBITDA-multiple valuation is a useful frame for larger practices with a stable cost base and clean management accounts. It is the wrong frame in several real cases:
- Audit-heavy books where audit pressure is regulatory, not commercial. Audit fees that exist because the client is required to file do not support the multiplier the EBITDA method implies.
- Single-client concentration above 25 per cent. Concentration on this scale undermines the predictability the EBITDA multiplier depends on. Buyers discount heavily or revert to a fee-book valuation.
- Owner-dependent practices. If adjusted EBITDA assumes a manager replacement but the client relationships sit with the principal personally, the replacement EBITDA is theoretical. Clients leave, EBITDA is not realised, and the buyer either discounts the multiplier or structures most of the consideration into earn-out.
- Weak management accounts. If the buyer cannot reconcile adjusted EBITDA to documented numbers, valuation falls back to a defensive GRF basis with a discount for the data gap.
For principals selling sub-£750k fee books none of this is directly relevant; the GRF method and the eight factors above are where the value moves. For larger books, the EBITDA decision tree is the more honest starting point, and the practice valuation tool applies the right method automatically based on the fee size you enter.
Putting the multiple and the structure together
The headline accountancy practice valuation is the multiple times your gross recurring fees. The actual money you receive is the headline minus broker fees (if any), minus the structure of the deal that delivers it. A 1.4x GRF deal with 50 per cent on completion and minimal clawback often delivers more cash to the seller's bank, sooner, than a 1.5x GRF deal with multi-year earn-out, equity rollover, and clawback risk. The multiple matters; the structure matters more. See the deal structure page for how the 50/25/25 single-retention-test structure works in practice.
For an accountant thinking about selling your practice, the practical sequence is: get an indicative valuation range from the eight factors above; understand which structure the buyer proposes for the deferred consideration; calculate net-to-pocket against your tax position; choose the buyer who delivers the best combination of headline number and structure for your specific circumstances. Two practices with identical gross recurring fees can deliver materially different outcomes for their owners depending on which buyer they pick.