The Fractional FC Engagement, From Both Sides of the Table

Almost everything written about fractional finance is written for one party. Guides for businesses explain what to look for; guides for practitioners explain how to build a practice. The two rarely meet, which is unfortunate, because most fractional arrangements that disappoint do so for reasons both sides could have seen coming. The client had expectations nobody stated. The practitioner accepted a scope they knew was vague. Ninety days later the numbers are somewhat better, the relationship is slightly strained, and neither party can say precisely what went wrong. This article looks at the same engagement from both ends — what a business should expect, and what the person delivering it wishes had been said at the start.

The arithmetic that brings people to the table

Worth establishing why this arrangement exists at all, because the economics explain the expectations on both sides.

A permanent Financial Controller at £90,000 costs an employer roughly £108,000 fully loaded once National Insurance, pension and benefits are counted — before recruitment cost or notice period. A two-day-a-week retainer runs £3,500 to £5,500 a month, or roughly £50,000 a year, for the same seniority with no employment commitment.

From the practitioner’s side the same numbers look different. A £500 day rate at 160 billable days — realistic once business development, admin, holiday and the gaps between engagements are counted — is £80,000 gross, from which come accountancy fees, insurance, no employer pension and no paid leave. The rate is compensation for carrying utilisation risk, not a premium for the same work.

Both parties are getting a genuinely good deal, which is why the market has grown. Neither is getting the deal the other imagines.

Days 1 to 15: the client wants output, the FC needs to look

What the business expects: things to start improving. There is usually a precipitating event — a late close, an investor question, a founder who has spent three evenings on the management accounts — and the arrival of a senior person feels like it should resolve it.

What actually happens, and should: questions. A good fractional FC spends the first three or four visits finding out what is true rather than fixing what is visible. Following a transaction end to end, reading the last two statutory accounts, checking when each balance sheet account was last reconciled, and talking to whoever processes the ledgers — who invariably knows where the problems are and is rarely asked.

What should arrive at the end of it: a written assessment naming the three or four things that matter most, in order. Not a list of everything wrong — a prioritised view, which is the judgement being bought.

The warning sign for the client: an FC who starts fixing in week one without diagnosing. It looks like energy and it usually means they are addressing what is visible rather than what matters.

And what the practitioner should say out loud: that the first fortnight will feel unproductive and is not. Businesses that have not been told this read the silence as slowness.

Days 15 to 45: the close, and the thing nobody warned you about

This is where the work concentrates in almost every engagement, and where the first real friction usually appears.

What should happen: a published close timetable with named owners — including people outside finance, who are frequently the actual bottleneck. The balance sheet reconciliation index built and the backlog worked through. Accruals and prepayments put on a documented basis. Then the first close run under the new process, which will still be imperfect.

The friction: the backlog is nearly always worse than disclosed. Not through dishonesty — businesses genuinely do not know how bad their reconciliations are, because nobody qualified has looked. An FC who finds three years of unreconciled control accounts in week three has a problem, and how they raise it determines the next six months.

The honest handling on both sides is the same: it should have been flagged in the diagnosis rather than discovered in month two, and where it was not, it needs re-scoping rather than quietly absorbing. Practitioners who absorb it end up doing three days for two days’ money; clients who refuse to re-scope end up with an FC quietly deprioritising something else.

What good looks like by day forty-five: the numbers arrive on a date people were told in advance. Speed comes later — a dependable day-ten close is worth more than a promised day six delivered on day fourteen.

Days 45 to 90: reporting, controls, and the test that matters

Reporting is the visible output and where the client first feels the value. A pack rebuilt around what leadership actually needs to decide, with commentary explaining variances by cause rather than listing them. The test is embarrassingly simple: do you read it? A surprising number of finance functions fail that one.

Controls are the invisible half — approval limits, segregation of duties, bank access, supplier bank-detail changes. Unglamorous, rarely requested, and the thing most likely to prevent a serious loss.

And documentation, which matters more in a fractional arrangement than a permanent one for an obvious reason: they are not there on Thursday. A process that lives in the FC’s head is a weekly problem rather than an annual one.

That produces the single best test a client can apply at ninety days, and it is worth stating plainly: can you ask about any number in the pack and get an answer the same day? That one question tells you whether the balance sheet is genuinely reconciled, whether the process is documented, and whether the person understands your business rather than merely producing from it.

The mirror warning sign is the one clients rarely spot because it feels like value: an FC who has made themselves indispensable in three months has built a dependency rather than a function. You will feel it the first time they are unavailable. Our guide to what a fractional FC achieves in the first 90 days sets out the full trajectory week by week, including what should not be expected in that window.

What practitioners wish clients understood

Five things, drawn from what goes wrong rather than from what is advertised.

Two days a week is eight and a half days a month. Expectations are frequently set by what a full-time FC delivers, and the arithmetic does not support it. Anything genuinely additional — a systems implementation, a first audit, a funding round — displaces something else or needs paying for separately.

Authority is not a formality. System access, sign-off limits and the ability to direct the transactional team have to transfer on day one. An FC routing every decision through the founder is an expensive way of getting the same answers you were already getting, and it is the commonest reason a good appointment underperforms.

Fixed days matter more at two days than at five. Floating availability produces someone who is never quite present and a client who expects them constantly.

Honesty in the brief is rewarded, not punished. Practitioners who are told about the unreconciled ledger and the system nobody trusts find it interesting — those are the problems they are good at. Discovering it in week two is what damages the relationship.

And the scope should say what is excluded. This is the single strongest predictor of an engagement that lasts, and it protects the client as much as the practitioner: a written boundary is what allows a client to ask for something extra without wondering whether they are imposing.

What clients wish practitioners understood

The other direction, and it is less often written down.

The business does not speak finance. A variance explained in accounting language has not been explained. The practitioners who become genuinely valued are the ones who tell a sales director what changed and why in terms they can act on.

Bad news early is fine; bad news late is not. Clients absorb “the reconciliation backlog is worse than we thought and here is what I suggest” without difficulty. What they cannot absorb is finding out in month four.

Progress should be visible. Two days a week means most of the work happens out of sight. A short written note after each visit — what was done, what is next, what is blocked — costs ten minutes and prevents the impression of a quiet invoice.

And the point is to become less necessary, not more. Clients notice when documentation appears and processes start running without intervention. It is also, counter-intuitively, what makes engagements last: an FC who has built something durable gets asked to take on the next thing.

For finance professionals considering this route

If you are weighing a move into fractional work, three things determine whether it suits you rather than whether you are capable of it.

Do you enjoy the diagnostic period? Walking into an unfamiliar business, working out what is wrong and deciding what matters is the recurring core of the job. People who prefer to build something over years find it unsatisfying by the third client.

Can you tolerate irregular income? Not intellectually — against your actual commitments. A three-to-six month buffer is the practical entry requirement and the first year is the hardest.

And do you have a network? First clients come from people who know your work far more often than from marketing. Accountancy practices are the strongest ongoing referral source by a distance — they regularly meet clients who have outgrown them and would rather refer than lose the relationship.

The commercial side is where most people starting out get it wrong, usually by anchoring their rate to a former salary divided by working days — which understates it by roughly a third before accounting for the days you will not bill. Our guide to becoming a fractional Financial Controller covers who it suits, finding the first clients, what to charge, how to structure engagements, and the mistakes that cost the most.

The engagement that works

Strip out the detail and the arrangements that run for three or four years rather than three or four months have the same four features, and none of them is about the individual.

A written scope, including exclusions. Real authority from day one. Fixed, protected days. And three named outcomes for six months — a close by day eight, a reconciled balance sheet, a board pack the leadership reads — so both parties know what success looks like.

All four are agreed before anyone starts, and all four take about an hour. That hour is the difference between an engagement that becomes part of how the business runs and one that quietly sours around month twelve, with neither side quite able to explain why.