Fractional chief sustainability officer salary · day rate, month, year
What a fractional chief sustainability officer earns, by the day, the month and the year
A fractional chief sustainability officer is paid a day rate, not a salary.
On Exec Capital’s 2026 figures, a fractional chief sustainability officer salary is built on a day rate of £1,200–£1,800 at a mid-market business, £1,500–£2,200 at a FTSE 250 or large private company and £2,000–£3,000 at a FTSE 100 company or regulated financial services firm.
Exec Capital says fractional engagements run two to four days a month, and gives an example of three days a month at £1,500 a day costing £54,000 a year.
When you brief us on a fractional hire, we send a shortlist of 3–5, each with day rate, availability and IR35 position set out.
How a brief runswhat we undertake
- 01Brief30-MINUTE SCOPING CALLDay 0
- 02Shortlist of 3–5VETTED · RATE BENCHMARK · IR35After the brief
- 03InterviewsYOU MEET THE SHORTLISTYour diary
- 04Scoped startFIRST-MONTH OUTCOMES AGREEDYou set the date
- 05Fractional, interim and permanentIR35 POSITION SET OUTOn every brief
Shortlist3–5
15 minutes · video or phone
Book 15 minutes to hire a fractional chief sustainability officer
Tell us the scope and the days a week. We come back with Fractional Chief Sustainability Officer candidates, their day rates and availability.
- 0115 minutes, video or phone
- 02We scope the role and the days a week
- 03A shortlist of 3–5 after the call
- 04Fractional, interim and permanent briefs
Pick a day that suits · live availability
On the board · last 3 months
Fractional sustainability leadership jobs on the board
No Fractional sustainability leadership roles on the board in the last three months. Showing fractional executive roles instead.
- FractionalSyndicatedFractional People Director
People Puzzles Ltd · Cambridge
Rate not statedCambridge - FractionalSyndicatedFractional CFO
KeelCFO · England
Rate not statedEngland - FractionalSyndicatedFractional CFO
fin-house · London
£700–£1,000/dayLondon - FractionalSyndicatedFractional General Counsel
Ffern · London
est £1,000/day1 d/wk - FractionalSyndicatedPerformance & Development Lead (Fractional)
Unity Advisory · London
Rate not stated3 d/wk - FractionalSyndicatedFractional CFO
Amitours · United Kingdom
Rate not statedUnited Kingdom - FractionalSyndicatedFractional CISO (Contract / Project Based)
Cambridge Spark · United Kingdom
est £1,500/day2 d/wk - FractionalSyndicatedHead of Medical Compliance, Governance & Diligence (Fractional)
CNX Therapeutics Ltd · Greater London
est £1,000/dayGreater London - FractionalSyndicatedFractional Product Practice Leader - 9 Month Contract
Tails.com · London
est £1,000/day2 d/wk
Fractional sustainability roles on the board
How fractional recruitment agencies compare is set out in one place, including how we work: a Fractional Chief Sustainability Officer brief and a shortlist of three to five.
01/ the role
How a fractional sustainability chief is paid, and what sets the rate
A fractional chief sustainability officer is a senior sustainability leader who works a few days a month for several organisations at once.
Exec Capital describes the engagement as two to four days a month: attending board meetings, owning the sustainability strategy, leading climate disclosure, chairing the sustainability committee and answering investors and customers on ESG.
The client pays for the days.
There is no salary, bonus or employer pension.
The client sets the rate.
Exec Capital’s bands rise with turnover and regulation: £1,200–£1,800 a day at a business turning over £50m to £250m, £1,500–£2,200 at £250m to £1bn, and £2,000–£3,000 at a FTSE 100 company or a regulated financial services firm.
It publishes the same bands for interim engagements; the difference is the days bought.
The work is set by the reporting cycle.
Quoted companies report energy use and greenhouse gas emissions in their annual directors’ report under the government’s environmental reporting guidelines, and the UK Sustainability Reporting Standards are published for voluntary use.
For the standards paragraph by paragraph, our sister site uksrs.org.uk sets out UK SRS S1 and S2.
02/ scope
How to hire a fractional chief sustainability officer
1. Count the days the work needs
List what the role must own: the board’s sustainability agenda, the annual disclosure, a target submission, the committee.
Then estimate the days a month it takes.
The days set the cost; the firm and the regulation set the rate.
2. Match the record to the reporting
A first sustainability lead for a mid-market business needs someone who has built a disclosure from nothing.
A listed or regulated firm needs someone who has signed one off under scrutiny.
Pay for the experience the next year needs.
Most corporate carbon inventories follow the GHG Protocol Corporate Standard, which sets how emissions are counted and reported.
For listed companies and regulated firms, the FCA sets out its approach on its climate change and sustainable finance pages, including its anti-greenwashing rule.
3. Agree scope, access and rhythm
Write down which days, which meetings and which data the executive will have.
A few days a month works when both sides know what they buy.
If the business makes environmental claims to customers, the CMA’s Green Claims Code sets out how to stay within consumer law.
What we do on a fractional brief
We recruit fractional, interim, part-time, temporary and permanent sustainability leaders, and non-executive directors.
We send a shortlist of 3–5, each with day rate, availability and IR35 position set out, and every candidate goes through our five-stage vetting first.
For part-time seats on the board, see fractional sustainability jobs.
03/ the week
How a week divides.
Part of a week is the point of the model: the days you buy are yours, the rest of the week goes to other clients. Move the days a week and the week redraws.
Illustration only: one way a fractional chief sustainability officer’s week can divide at 2 days a week for you. Each block is half a day.
04/ the board
What the board holds.
A read of the roles on the board on this page, counted as they stand: how each is engaged, whether the posting gives the days and the rate, and where the work happens.
On this board, last 90 days · 9 roles · fractional executive
Engagement
- Fractional9
Seat
- CFO3
- CHRO1
- General counsel1
- HRD1
- CISO1
- Other1
- Other seats1
Days a week
- Stated in the posting4
- Not stated5
Day rate
- Verified rate1
- Estimated (est)4
- Rate not stated4
Work arrangement (as the job feed classifies it)
- Remote2
- Hybrid5
- On-site2
Newest posting on the board: 6 Oct 2026.
Postings per week on this board, last 90 days
9 postings on this board in the last 90 days, counted by the week each was published.
05/ the route
Fractional, interim or permanent?
Four taps. The answer names the route for the seat and the page that covers it.
The route · Fractional
A fractional chief sustainability officer.The work fills part of the week, so buy the days it needs.
A fractional chief sustainability officer holds the seat on agreed days for as long as the seat is needed, and works for other clients on the rest.
The route · Interim
An interim chief sustainability officer.The work fills the week, and it has an end: a programme, a cover, a transaction.
An interim chief sustainability officer takes the seat full time for that stretch and hands it over when it is done.
The route · Interim, then permanent
Interim now, a permanent chief sustainability officer after.The seat is full time and long term, and the need is now.
An interim chief sustainability officer holds it while the permanent search runs, so the seat is not left empty.
The route · Permanent
A permanent chief sustainability officer.A full-time seat that sits at the table for years is a permanent hire.
There is time to run a search, so run one.
06/ rates by stage
Fractional chief sustainability officer salary day rates by firm
Day rates as Exec Capital, a recruiter, publishes them on its fractional chief sustainability officer page (updated May 2026). The firm bands are by annual turnover.
07/ rates by commitment
Fractional chief sustainability officer rates by days a month and a year
Days a month × Exec Capital’s mid-market band of £1,200–£1,800 a day, and that × 12 for the year: our arithmetic, a comparison and not a salary. The last row is Exec Capital’s own worked example.
08/ economics
Rate is not income: what the executive keeps
The day rate is what the client pays, not what the executive takes home.
A fractional executive who invoices through their own limited company can take money out as a salary through PAYE and as dividends from profit, after Corporation Tax.
Out of the same income they fund their pension, holidays, insurance and the days they do not sell.
Tax status changes the number too.
Under the off-payroll working rules (IR35), a medium or large client makes the status determination; for a small client outside the public sector, the executive’s own company decides.
The rules apply contract by contract, so someone with three clients can have three different answers.
HMRC’s CEST tool gives its view on one engagement; our IR35 guide sets out the tests.
09/ vetting
How we vet fractional chief sustainability officers
What we undertake on every brief, before a candidate reaches you.
- 01
Qualification screen
Verify Fractional Chief Sustainability Officer tenure, sector context and stage fit.
SOURCING - 02
Mandate fit
Match to your situation — stage, board dynamics, timing.
MATCHING - 03
Reference deep-dive
We take references ourselves, from recent past clients — real outcomes, not titles.
VERIFY - 04
Shortlist
Three to five candidates with day rate, availability and IR35 position set out.
SHORTLIST OF 3–5
10/ the year
What a fractional sustainability chief makes in a year
Multiply the rate by the days sold, across every client.
Exec Capital puts one engagement at about £40,000 to £80,000 a year, and its example of three days a month at £1,500 a day comes to £54,000.
Two such clients is twice that, if the diary holds.
In practice the diary rarely fills every month.
Holidays, the gaps between clients and the time spent finding the next one all come off the total.
A fractional salary is the profit of a small business, not a rate multiplied by a full year.
To model your own position, start from the days you can realistically sell and use the rate calculator.
11/ the comparison
Full-time salary vs fractional pay: comparing like with like
A permanent sustainability chief is paid a salary and package, with employer’s National Insurance, pension and often a large bonus on top; see chief sustainability officer salary for those benchmarks.
Exec Capital sets its £54,000 fractional example against permanent compensation of £200,000 or more.
An interim is paid the same kind of day rate for full-time cover over a fixed period; see interim chief sustainability officer salary.
Compare the total cost for the days the organisation needs, not the headline figures.
12/ questions
Fractional chief sustainability officer salary FAQ
The questions people ask before bringing in a fractional chief sustainability officer.
Book 15 minutes · shortlist of 3–5
Bring the brief. We architect the team.
A shortlist of 3–5 with day rate, availability and IR35 position set out, after five-stage vetting.
