CFO insight

Your Finance Function Is Two Stages Behind Your Revenue. Here Is the Blueprint.

Hayat Amin · Updated 2026-10-09

Most founders run a finance function designed for half their current revenue. Here is what to build at £1M, £5M, and £20M — and the signals that mean you are already behind.

Most startup founders are running a finance function designed for half their current revenue. According to a 2025 Deloitte Private survey, 71 percent of companies between £2M and £10M in revenue still rely on the same bookkeeper-and-spreadsheet setup they used at £500K. The cost is invisible until it is not — a failed audit, a botched fundraise, or a month-end close that takes three weeks instead of two days.

Hayat Amin has rebuilt finance functions at every stage from seed to pre-exit. Amin’s rule is direct: “If your finance setup has not changed since your last funding round, you are already behind. Revenue moves faster than you think. Your finance function has to move first.”

What Should a Finance Function Look Like at £1M in Revenue?

At £1M in revenue, a startup needs three things from its finance function: accurate monthly accounts, a cash forecast that extends at least 13 weeks, and clean enough records to survive basic investor due diligence. Anything more is premature. Anything less is a fundraise risk.

The team at this stage is minimal: a part-time bookkeeper (£500 to £1,000 per month) and cloud accounting software — Xero or QuickBooks. No fractional CFO yet. No controller. The founder or COO reviews the numbers monthly, and the bookkeeper handles bank reconciliation, invoicing, and VAT returns.

What most £1M founders get wrong: they treat accounting as a compliance obligation instead of a decision-making tool. Monthly management accounts at this stage should take two hours to produce and one hour to review. If they take longer, the chart of accounts is overcomplicated. If they do not exist at all, the founder is flying blind.

The critical milestone before leaving this stage: separate business and personal accounts (still a problem in 15 percent of seed-stage companies), a documented revenue recognition policy, and a clean trial balance that an investor’s accountant can review without follow-up questions.

What Changes at £5M in Revenue?

At £5M, the finance function shifts from record-keeping to operational intelligence. The company needs management accounts that arrive by day five of each month, departmental P&L visibility, and a rolling cash forecast that the leadership team actually uses to make hiring, spending, and pricing decisions.

This is the stage where a fractional CFO earns their fee. A fractional CFO at £3,000 to £6,000 per month adds financial modelling, board reporting, KPI dashboards, and fundraise preparation without the £150,000 to £200,000 cost of a full-time hire. Hayat Amin argues this is the single highest-ROI hire a £5M company makes: “A fractional CFO at this stage does not just report the numbers. They change the numbers — by restructuring payment terms, renegotiating vendor contracts, and identifying the three line items where 80 percent of cash leaks.”

The team expands: a full-time or near-full-time bookkeeper, a fractional CFO on a two-day-per-week retainer, and potentially a part-time financial controller if transaction volume demands it. The tech stack adds a reporting layer — a BI tool or at minimum a structured dashboard that pulls from the accounting system.

Two things separate a £5M finance function from a £1M one running on fumes: accrual accounting (not cash-basis), and a month-end close process that completes in five working days or fewer. If the close takes three weeks, the data arrives too late to inform decisions. Beyond Elevation’s two-day close playbook compresses this further to 48 hours.

What Does the Finance Function Look Like at £20M?

At £20M, the finance function becomes a strategic department, not a support function. The company needs a full-time finance leader (head of finance or finance director), a controller managing the day-to-day, an AP/AR function, and either a fractional or full-time CFO owning strategy, board reporting, and capital allocation.

The shift is structural. At £5M, the CFO is a part-time operator plugging gaps. At £20M, the CFO is the CEO’s strategic partner — owning the financial narrative for investors, driving M&A readiness, and building the infrastructure that supports the next stage of growth. Whether that CFO is fractional or full-time depends on complexity, not revenue. A £20M company with a simple business model and no near-term exit may still run well with a fractional CFO. A £20M company preparing for a sale needs a full-time CFO who owns the data room.

The minimum viable finance team at this stage: finance director or head of finance (full-time), financial controller (full-time), AP/AR administrator, and a CFO (fractional or full-time). Total cost: £200,000 to £350,000 per year. The return: clean audits, investor-grade reporting, a month-end close under five days, and a finance function that adds enterprise value instead of consuming management attention.

What Are the Three Most Expensive Finance Function Mistakes?

Three finance function mistakes cost more than any individual hire. The first is hiring too senior too early — bringing on a full-time CFO at £1M in revenue when a bookkeeper and clean processes deliver more value per pound. The second is hiring too junior too late — still relying on a solo bookkeeper at £10M when the company needs financial modelling, board reporting, and cash management that a bookkeeper was never trained to deliver.

The third mistake is the most common: treating the finance function as a cost centre instead of a value driver. Hayat Amin’s view is blunt: every pound spent on finance infrastructure should return at least five pounds in saved management time, faster decisions, or improved terms on the next funding round. “If your finance function is not making you money or saving you money, you built the wrong one,” Amin says.

Beyond Elevation works with companies at every stage to design finance functions that match their revenue, not their ambition. The right finance function at the right stage produces decision-grade numbers without consuming more than 3 to 5 percent of revenue in total finance costs.

How Do You Know When to Upgrade?

Hayat Amin’s Revenue-Stage Finance Audit, the diagnostic Beyond Elevation runs before every fractional CFO placement, checks five signals that indicate the finance function has fallen behind the company’s revenue stage. Any two of these at the same time mean the function needs restructuring, not patching.

The month-end close takes more than ten working days. The CEO or founder spends more than four hours per week on financial administration. Investor or board questions regularly cannot be answered from existing reports. Cash surprises — unexpected shortfalls or surpluses over £50K — happen more than once per quarter. The company has been through a funding round, acquisition, or major contract without a financial model built for the purpose.

Hayat Amin reminds founders that upgrading the finance function is not a one-time project. “Every time your revenue doubles, audit your finance stack. The tools, people, and processes that worked at £2M break at £5M. The ones that work at £5M will not survive £15M. The companies that build ahead of their revenue are the ones that raise, exit, and grow without crisis.”

FAQ

How much should a startup spend on its finance function?

Between 3 and 5 percent of revenue is the benchmark for total finance function costs — people, tools, and external advisors combined. At £1M that means £30K to £50K per year. At £5M, £150K to £250K. At £20M, £600K to £1M. Companies spending below 2 percent are usually under-resourced. Above 7 percent, audit for inefficiency.

When should a startup hire a fractional CFO?

The inflection point sits between £2M and £5M in revenue. Below £2M, a bookkeeper and clean processes are enough. Above £5M, the company needs financial modelling, board reporting, and strategic cash management that a bookkeeper cannot deliver. A fractional CFO at £3,000 to £6,000 per month fills this gap at a fraction of a full-time hire.

Can a startup skip the fractional CFO stage and hire full-time?

Yes, but the economics rarely justify it below £10M in revenue. A full-time CFO costs £150,000 to £250,000 fully loaded. At £5M in revenue, that is 3 to 5 percent of revenue in a single hire before adding the rest of the finance team. A fractional CFO at £72,000 per year delivers 80 percent of the strategic value at 40 percent of the cost.

What is the first sign a finance function needs upgrading?

The month-end close. If it takes more than ten working days, the finance function has fallen behind. Clean, timely monthly accounts are the foundation of every other finance capability — forecasting, board reporting, cash management, and fundraise readiness all depend on them.

Should the CEO be involved in finance at early stages?

Yes, but only in reviewing outputs, not producing them. At £1M, the CEO should spend one hour per month reviewing management accounts and the 13-week cash forecast. At £5M, two hours per month reviewing a board-ready financial pack prepared by the fractional CFO. Any more time than that and the finance function is understaffed.