Strategy

From bookkeeping to CFO: when to level up your finance function

Apr 14, 20268 min readBy CM Advisory

Most founders hire a bookkeeper, then a part-time accountant, then nothing for several years. The numbers stay clean, the year-end is calm, and finance feels handled. And then, somewhere between £500k and £3m of revenue, a quieter problem starts: the business is making decisions without a finance perspective in the room.

The first signs

You notice it in three places. The board pack arrives, but no one has connected the variance to a decision. Pricing has not been revisited in two years. The bank balance is moving in ways that surprise you mid-quarter. None of these is a crisis on its own. Together they signal that bookkeeping has reached its limits.

What CFO-level finance actually adds

  • Forward-looking modelling — 13-week cash, 12-month forecast, scenario stress tests.
  • Pricing and unit-economics rigour, refreshed at least annually.
  • Investor- and lender-grade reporting, ready to send without a fortnight of cleanup.
  • A finance perspective at the operating-decision level — hires, channels, contracts.
  • Capital strategy: when to raise, when to lend, when to slow down.

Fractional first, full-time later

Most of our clients start with a fractional CFO engagement — typically 2 to 6 days per month. The economics are sound: you get senior judgement against the questions that matter, without committing to a six-figure hire before the business needs one. Many stay fractional indefinitely; some level up to a full-time hire 18–36 months in, with us on the way out.

How to start

If two of the three early signs above feel familiar, the cost of waiting another quarter is meaningful. The first thing to do is not to hire anyone — it's to define the question you most need answered. Pricing? Cash runway? Channel profitability? Once the question is sharp, the right format becomes obvious.

All articles8 min read · CM Advisory
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